Dissertations / Theses on the topic 'Endemic plants'
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Bruchmann, Ines [Verfasser]. "Plant endemism in Europe : spatial distribution and habitat affinities of endemic vascular plants / Ines Bruchmann." Flensburg : Zentrale Hochschulbibliothek Flensburg, 2011. http://d-nb.info/1019372133/34.
Full textRuchala, Stacy L. "Propagation of Several Native Ornamental Plants." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/RuchalaSL2002.pdf.
Full textZuefle, Marion E. "The impact of non-native woody plants on the native herbivorous insect community of northern Delaware." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 75 p, 2006. http://proquest.umi.com/pqdweb?did=1163239621&sid=7&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Full textRodrigues, Karina Fidanza. "Estudos taxonomicos em Cambessedesia DC. (Melastomataceae)." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314835.
Full textTese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia
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Resumo: Este trabalho trata da re-avaliação taxonômica do gênero Cambessedesia DC., com chave de identificação para todos os táxons, descrições, sinonímias, relação do material examinado, comentários sobre as afinidades taxonômicas baseados em caracteres morfológicos, a distribuição geográfica, acompanhados de ilustrações e mapas de distribuição para as espécies. Com base no estudo de cerca de 3.000 exsicatas provenientes de 17 herbários nacionais e 17 estrangeiros, associado a diversas observações de campo e a estudos inéditos para o grupo tais como a análise das sementes, tricomas, emergências e estames sob microscopia eletrônica de varredura, 27 espécies são reconhecidas, das quais três são novas. Foram efetuadas as seguintes alterações infragenéricas e infra-específicas: sinonimização de Cambessedesia sect. Cambessedesia e Cambessedesia sect. Pyramia; o epíteto de C. hilariana foi substituído pelo epíteto específico fasciculata, por ser prioritário; C. arenaria e C. tiradentensis foram consideradas sinônimos de C. corymbosa e, C. espora subsp. ilicifolia, sinônimo de C. espora; C. longifolia e C. bahiana foram elevadas ao status específico. Foram designados 13 lectótipos e quatro neótipos. O gênero Cambessedesia é caracterizado por apresentar espécies com folhas frequentemente adicionais axilares reduzidas e dispostas em braquiblastos (algumas vezes assumindo forma de fascículos) ou verticiladas apenas em C. weddellii, flores 5-(6-) meras, pétalas bicolores (predominantemente vermelho-alaranjadas com base amarela), ou monocromáticas (amarelas ou branco-amareladas), estames 10 (-12), (5 apenas em C. semidecandra); anteras com conectivo espessado dorsalmente e eventualmente com pequeno cálcar na base, sem apêndices ventrais; cápsulas com sementes depresso-ovais, densamente ou esparsamente tuberculadas, antirafe na maioria das vezes mais desenvolvida que a rafe. Este gênero é endêmico no Brasil, onde foram detectados três padrões gerais de distribuição geográfica de suas espécies: amplo, endêmico (endêmico na Serra do Espinhaço-MG, endêmico na Chapada Diamantina-BA, endêmico na Chapada dos Veadeiros-GO) e disjunto. Dentre as 27 espécies deste gênero apenas C. fasciculata e C. espora apresentam distribuição geográfica mais ampla. Os dados apresentados no presente trabalho poderão futuramente contribuir para outros estudos filogenéticos em Cambessedesia.
Abstract: A taxonomic re-evaluation of the genus Cambessedesia DC. is conducted, including identification key for all taxa, descriptions, synonymies, list of examined materials, comments about taxonomic affinities based on morphological traits, observations on habitat and distribution, as well as illustrations and distribution maps for all analyzed species. The studies were based on the analysis of 3.000 exsiccatae from 17 national herbaria and 17 herbaria of foreign countries, which was associated with diverse field observations and with inedited scanning electron microscopy examinations of seeds, trichomes, emergencies and stamens. A total of 27 species were identified and two of them were recognized as new The following infrageneric and infraspecific modifications were derived from the taxonomic re-evaluation: Cambessedesia sect. Cambessedesia and Cambessedesia sect. Pyramia are considered synonymies; the epithet C. hilariana was replaced by the epithet fasciculata, because of its priority; C. arenaria and C. tiradentensis were considered synonym of C. corymbosa and C. espora subsp. ilicifolia synonym of C. espora; C. longifolia and C. bahiana were elevated to the specific status. A total of 13 lectotypes and four neotypes were designated. The genus Cambessedesia is characterized by species with opposite leaves, frequently with additional axillary leaves that are small and arranged in brachiblasts, occasionally fasciculate, or verticillate in C. weddellii only. The flowers are 5-(6-) merous with bicolor petals that are red-orange colored and have a yellow base, or that are monochromatic yellow or white-yellowish; stamens 10(-12), 5 in C. semidecandra, and the anther connective is dorsally thickened, often with a calcar at the base, without ventral appendages. The capsules contain oval-depressed seeds that are densely or sparsely tuberculate and, almost always, the anti-raphe is more developed than the raphe. Cambessedesia is endemic to Brazil, where three general patterns of geographic distribution were identified for its species: widely distributed, endemic (Espinhaço Mountains (MG), Chapada Diamantina (BA) and Chapada dos Veadeiros (GO) and disjunct Among the 27 identified species, only C. fasciculata and C. espora are widely distributed. The data in the present work contributes to further understand the systematic of Cambessedesia and are potentially useful for future phylogenetic in this genus.
Doutorado
Biologia Vegetal
Doutor em Biologia Vegetal
Latolla, Nehemiah Solomon. "The investigation of chemical variation in the stems and rhizomes of cissampelos capensis l. f. (menispermaceae) the Eastern Cape medicinal plant." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/13970.
Full textGoertzen, Leslie Richard. "Studies in asteraceae nuclear ribosomal DNA and macaronesian endemics /." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3032401.
Full textWennerberg, Sarah B. "Propagation and field assessment of West Virginia native species for roadside revegetation." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4157.
Full textTitle from document title page. Document formatted into pages; contains vii, 65 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.
Venable, Christina. "The use of native plants for revegetation along West Virginia highways." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=4057.
Full textTitle from document title page. Document formatted into pages; contains vi, 65 p. : map (part col.). Includes abstract. Includes bibliographical references (p. 45-49).
Tarrant, Valerie M., and valerie tarrant@deakin edu au. "Melbourne's indigenous plants movement: The return of the natives." Deakin University. School of History, Heritage and Society, 2005. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20061207.113857.
Full textSanchez-Medina, Alberto. "Phytochemical and pharmacological studies on some endemic Yucatecan medicinal plants." Thesis, University of Greenwich, 2007. http://gala.gre.ac.uk/6291/.
Full textHowis, Seranne. "A taxonomic revision of the southern African endemic genus Gazania (Asteraceae) based on morphometric, genetic and phylogeographic data." Thesis, Rhodes University, 2007. http://eprints.ru.ac.za/1716/.
Full textBallard, Meg. "Insect populations on early successional native and alien plants." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 50 p, 2006. http://proquest.umi.com/pqdweb?did=1203553531&sid=1&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Full textAinsworth, Alison. "Interactive influences of wildfire and nonnative species on plant community succession in Hawaii Volcanoes National Park /." Connect to this title online, 2007. http://hdl.handle.net/1957/4504.
Full textLevrier, Claire. "Phytochemical and Biological Investigations of Cytotoxic Compounds from Australian Endemic Plants." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/367364.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Natural Sciences
Science, Environment, Engineering and Technology
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Haque, Md Nazmul. "Screening the phytoremediation potential of native plants growing on mine tailings in Arizona, USA." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Full textConesa, Muñoz Miquel Àngel. "Hybridization patterns in Balearic endemic plants assessed by molecular and morphological markers." Doctoral thesis, Universitat de les Illes Balears, 2010. http://hdl.handle.net/10803/9373.
Full textNatural hybridization is a widely known process in plants. It is an important source of variation promoting species evolution. It is likely to be the origin of many angiosperms, including local endemisms. Oppositely, it is also regarded as a potential threat for endemisms survivorship, diluting their differentail traits. This thesis deals with putative natural hybridization processes involving three Balearic endemics (Viola jaubertiana, Lotus fulgurans i Helichrysum crassifolium), from the points of view of the DNA molecular markers and the morphology. The role of natural hybridization in the variation, origin, and conservation of the above endemics is evaluated.
Jaca, Estepa Julia. "Opportunistic Vertebrates as Mediators of the Reproductive Success of two Canarian Endemic Plants." Doctoral thesis, TDX (Tesis Doctorals en Xarxa), 2020. http://hdl.handle.net/10803/671456.
Full text[spa] El éxito reproductivo de las plantas depende de la eficacia de la interacción mutualista y del contexto en el que ocurre. Esta tesis investiga y cuantifica el “fitness” (éxito biológico) de la planta con un grupo particular de animales mutualistas, los vertebrados oportunistas, en un contexto particular, en islas oceánicas. Comparadas con los sistemas continentales, las islas oceánicas generalmente se caracterizan por redes mutualistas más simples, en gran medida como resultado de su fauna depauperada. A consecuencia de esto, las especies de plantas son proclives a incluir nuevas interacciones de flor-polinizador y fruto-dispersor después de su colonización. En las Islas Canarias, las aves paseriformes y los lagartos (F. Lacertidae) son visitantes florales y consumidores de frutos frecuentes de la flora nativa, pero su eficacia e importancia relativa en el éxito reproductivo es casi desconocida. Por otro lado, las islas son particularmente vulnerables a las especies exóticas. Ratas, abejas de la miel y cabras son invasores exitosos en las Canarias que interaccionan con especies nativas de plantas, muchas de ellas endémicas, y cuyos potenciales efectos perjudiciales en el “fitness” de las plantas merece nuestra atención con el fin de preservar esta flora endémica. Con el principal objetivo de aportar más conocimiento en el papel de los vertebrados en el éxito reproductivo de las plantas en el archipiélago canario, y en la evolución del síndrome de polinización por aves en las islas Macaronésicas, seleccionamos los endemismos Echium simplex y Canarina canariensis, ambos interaccionando con mutualistas nativos, y también con antagonistas exóticos. Los capítulos 1 y 2 evalúan el sistema reproductivo, identifican los visitantes florales diurnos y nocturnos, y comparan la eficacia de polinización de diferentes gremios de animales (vertebrados vs insectos, insectos diurnos vs insectos nocturnos) a lo largo de diferentes secciones de la inflorescencia de E. simplex. La planta es auto-compatible, pero su éxito reproductivo es claramente favorecido por animales polinizadores. Las abejas y los escarabajos fueron los insectos visitantes más comunes, mientras que el herrerillo y el mosquitero canarios fueron los vertebrados predominantes. Los insectos voladores diurnos aumentaron el cuajado de frutos, mientras que los pequeños habitantes de las flores (en su mayoría escarabajos) disminuyeron tanto el cuajado de frutos como de semillas; en cambio, los vertebrados tuvieron un efecto insignificante en el éxito reproductivo. Adicionalmente, encontramos que las estructuras reproductivas son considerablemente dañadas por cabras asilvestradas, lo cual amenaza la supervivencia de esta especie endémica canaria El capítulo 3 estudia la polinización de C. canariensis en fragmentos del antiguo bosque termoesclerófilo, evaluando cómo dos especies exóticas invasoras ampliamente distribuidas, la abeja de la miel y la rata, afectan a su éxito reproductivo. El mosquitero canario fue el visitante más frecuente al principio de la temporada de floración, mientras que la abeja de la miel predominó a mitad y al final de la misma. Las aves aumentaron el cuajado de frutos, mientras que los insectos tuvieron un efecto insignificante. Además de contribuir poco a la reproducción de la planta, la abeja de la miel podría interferir con la polinización por las aves al agotar el néctar de las flores. Las ratas consumieron alrededor del 10% de las flores y redujeron el cuajado de frutos a un tercio. Ambas especies exóticas pueden amenazar la reproducción de C. canariensis y, por tanto, el futuro de la sostenibilidad de la población en la vegetación termoesclerófila. El capítulo 4 investiga la eficacia relativa de diferentes gremios de vertebrados (aves vs lagartos) en dos etapas diferentes (polinización y dispersión de semillas) del ciclo reproductivo de C. canariensis en el hábitat termoesclerófilo. Construimos tres modelos estocásticos (específicamente, 'polinización', 'dispersión', y 'polinización + dispersión') que simulaban el reclutamiento de plántulas. La etapa de la dispersión contribuyó en mayor medida que la etapa de la polinización a lo largo del proceso de reclutamiento. Además, aves y lagartos mostraron una complementariedad funcional, contribuyendo más las aves en el modelo de polinización, mientras que los lagartos influyeron más en el modelo de dispersión.
[cat] L'èxit reproductiu de les plantes depèn de l'efectivitat de la interacció mutualista i del context d'aquesta. Aquesta tesi investiga i quantifica la fitness de les plantes amb un determinat grup de mutualistes animals, els vertebrats oportunistes, dins d'un context en particular, les illes oceàniques. En comparació amb els sistemes peninsulars, les illes oceàniques generalment es caracteritzen per xarxes mutualistes més simples, degut en gran mesura a una fauna animal empobrida. Degut a això, és més probable que les espècies de plantes presentin noves interaccions flor–pol·linitzador i dispersió de fruits després de la colonització de l'illa. A les Illes Canàries, els aucells passeriformes i els sargantanes de la familia dels lacèrtids són visitants freqüents de les flors i consumidors de fruits de la flora nativa, però la seva efectivitat i la importància relativa del seu èxit reproductiu són encara desconeguts. D'altra banda, les illes són particularment vulnerables a les espècies alienes. A les Illes Canàries les rates, les abelles de la mel i les cabres són invasors d'èxit que interactuen amb les espècies natives de plantes i els seus efectes detrimentals a la fitness de les plantes mereix la nostra atenció per a preservar aquesta flora endèmica. Amb l'objectiu principal d'aportar una visió més profunda del paper dels vertebrats en l'èxit reproductiu de les plantes de l'arxipèlag, i de l'evolució del síndrome de l'aucell pol·linitzador a les illes Macaronèsiques, hem seleccionat les endèmiques Echium simplex i Canarina canariensis, de cara a la interacció d'ambdues amb els mutualistes natius i els antagonistes aliens. Els capítols 1 i 2 avaluen el sistema reproductiu d’Echium simplex, identificant els visitants nocturns i diürns de les flors i comparen l'efectivitat de la pol·linització dels diferents gremis d'animals (vertebrats vs insectes, i insectes diürns vs nocturns) juntament amb seccions d'inflorescència de la planta. Aquesta espècie és auto- compatible però el seu èxit reproductiu millora amb els pol·linitzadors animals. Les abelles i escarabats varen ser els visitants insectes més comuns, mentre que la mallerenga africana i el mosquiter canari foren els visitants de flors vertebrats més prevalents. Els insectes voladors diürns incrementaren el quallat del fruit, mentre que els habitants de les flors més petites (principalment escarabats) reduïren el quallat del fruit i de les llavors; en contraposició, els vertebrats tingueren un efecte negligible en l'èxit reproductiu. A més, es va confirmar que les cabres ferals fereixen les estructures reproductives de les plantes, la qual cosa amenaça el manteniment d'aquesta espècie endèmica canària El capítol 3 estudia la pol·linització de Canarina canariensis als vestigis del bosc termescleròfil, avaluant com dues espècies invasores alienes esteses, l'abella de mel i la rata negra, afecta al seu èxit reproductiu. El mosquiter canari va ser el visitant més freqüent al inici de l'estació de floració mentre que l'abella de mel va ser predominant durant els mitjans i darrers períodes de floració. Els aucells incrementaren el quallat del fruit mentre que els insectes tingueren un efecte negligible. A més de contribuir poc a la reproducció de les plantes, les abelles de la mel podrien interferir en la pol·linització dels aucells, buidant les flors del seu nèctar. Les rates consumiren devers el 10% de les flores i reduïren el quallat del fruit a una tercera part. Ambdues espècies alienes poden amenaçar la reproducció de C. canariensis i per tant el sosteniment de la població a la vegetació termoescleròfila. El capítol 4 investiga l'efectivitat relativa de grups vertebrats diferents (aucells and sargantanes) a dos nivells diferents (és a dir, pol·linització i dispersió de llavors) del cicle reproductiu de Canarina canariensis a l'hàbitat termoescleròfil. Hem construït tres models estocàstics (principalment els models de 'pol·linització', 'dispersió' i 'pol·linització + dispersió') que simularen el reclutament de plàntules. L'etapa de dispersió va contribuir més que l'etapa de pol·linització en el procés de reclutament. A més, els aucells i les sargantanes exhibiren una complementarietat funcional, amb els aucells contribuint més al model de pol·linització i les sargantanes al de dispersió.
Ofisi, Mbulelo. "In vitro propagation studies of rare Argyroderma species strictly endemic to the Knersvlakte region of South Africa." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2714.
Full textA study was conducted to investigate the effects of various media composition and wounding treating on the in vitro propagation of Argyroderma subalbum and A. testiculare explants derived from mature plants, antioxidants and plant growth regulators (PGR) concentrations. One experiment consisted of 3 medium types including Murashige and Skoog (MS) medium strength, vitamin supplement. Fifteen replicates were used for each treatment. The shoots were then sub-cultured to ten replicate regenerated medium consisting of varying levels and combination of indole-3-acetic acid (IAA) and 10 μM 6-Benzyladenine (BA) supplements. In another experiment consisted of varying levels of auxins with MS medium strength, activated charcoal (AC) and vitamin supplements ten replicates were used for each treatment. Results indicated the positive role of cytokinins types’ 6-Benzyladenine (BA), 2-isopentyladenine (2iP) and Kinetin in inducing callus formation from wounded explants. The highest rate of friable callus formation of wounded explants was observed in media containing vitamin supplementation with BA at 10 μM. Callus formation significantly increased with the addition of vitamins at 10 μM on BA, 2iP and kinetin. With regards to the effects of various media composition and wounding explants on in vitro growth and regeneration of A. subalbum and A. testiculare, significant results were achieved with BA, 2iP and kinetin concentrations on explants discoloration and callus formation. The antioxidant treatment, AC did not reduce explants discoloration, but the induction of the callus was developed furthermore, results showed that IAA with BA concentrations without addition of AC there was significantly difference on both species but A. subalbum dominated with browning intensity (Chapter 3). Only sub-culturing of the explants succeeded in preventing explants discoloration and subsequently increased the number of shoots. The interaction between Indole-3-acetic acid (IAA) concentrations combined with BA resulted in the most effective technique in reducing explants discoloration at the media contact point. This study provides an insight into the contributing factor and methods of overcoming the major problem of phenolic oxidation and promoting the in vitro growth and regeneration of A. subalbum and A. testiculare.
Steele, Kyle Lindsay. "Restoring forest composition and structure of riparian corridors in the Missouri Ozarks." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5690.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 14, 2009) Includes bibliographical references.
Stott, Lance Vear. "Determining the suitability of native grasses for highway revegetation sod." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/stott/StottL1207.pdf.
Full textCerqueira, Nicole. "Pollinator visitation preference on native and non-native congeneric plants." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 2.91 Mb., 84 p, 2005. http://wwwlib.umi.com/dissertations/fullcit/1428175.
Full textMealor, Brian A. "Native plant population resilience to exotic invasion." Laramie, Wyo. : University of Wyoming, 2006. http://proquest.umi.com/pqdweb?did=1221731861&sid=7&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Full textClark, Vincent Ralph. "The phytogeography of the Sneeuberg, Nuweveldberge and Roggeveldberge (Great Escarpment): assessing migration routes and endemism." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1003756.
Full textDemirci, Barbaros. "A Geographic Information Systems Tool Development For Geostatistical Analysis Of Endangered Endemic Vascular Plants Of Turkey." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606098/index.pdf.
Full textBaker, Katherine S. "Seed germination and dormancy in south-western Australian fire ephemerals and burial as a factor influencing seed responsiveness to smoke." University of Western Australia. School of Plant Biology, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0091.
Full textBraunschweig, Suzanne Hill. "The acclimation ability of the shale barren endemic Eriogonum alleni to light and heat." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/40037.
Full textPh. D.
Hung, Tun-hei, and 洪敦熹. "Native plant regeneration in exotic tree plantation in Hong Kong, China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hdl.handle.net/10722/192778.
Full textSwart, Carin. "Life history, population dynamics and conservation status of Oldenburgia grandis (Asteraceae), an endemic of the Eastern Cape of South Africa." Thesis, Rhodes University, 2008. http://hdl.handle.net/10962/d1003799.
Full textPaulitsch, Fabiane. "DIVERSIDADE DE RIZÓBIOS ISOLADOS DE NÓDULOS DE Mimosa gymnas Barneby NATIVAS DOS CAMPOS GERAIS DO PARANÁ (BRASIL)." Universidade Estadual de Ponta Grossa, 2017. http://tede2.uepg.br/jspui/handle/prefix/2576.
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Levantamentos florísticos realizados nos “Campos Gerais” (Paraná, Brasil) indicam que Fabaceae é uma das famílias com maior riqueza e abundância da região. Esses estudos também apontam a elevada diversidade e endemismo de Mimosa spp. Nosso estudo relata a diversidade de rizóbios isolados de nódulos radiculares de plantas nativas de Mimosa gymnas Barneby. Vinte e nove estirpes foram obtidas de M. gymnast nodulíferas em três áreas do Parque Estadual do Guartelá, uma das mais importantes unidades de conservação dos Campos Gerais; os solos dessas áreas foram caracterizados como arenosos, ácidos, pobre em nutrientes e matéria orgânica e com elevados teores de alumínio. A árvore filogenética construída com sequencias parciais do gene 16S rDNA agrupou as estirpes em um grande clado sendo que algumas estipes foram mais relacionados com a espécie Paraburkholderia nodosa enquanto outras foram mais relacionadas com P. bannensi. A análise de perfil genômico baseada em BOX-PCR revelou um elevado grau de variabilidade intraespecífica entre os isolados. Resultados baseados na filogenia de sequencias concatenadas dos genes recA-gyrB dividiram os isolados em dois grandes grupos. O clado II não agrupou nenhuma estirpe tipo e os isolados apresentaram uma identidade nucleotídica de no máximo 97% com P. nodosa. A filogenia do gene nodC agrupou todos os isolados em um grupo único com elevado suporte estatístico, não agrupando com a sequencia correspondente de nenhuma estirpe tipo do gênero Paraburkholderia. Nossos resultados reforçam a constatação de que rizóbios do gênero Paraburkholderia são os preferenciais simbiontes de Mimosa na América do Sul e a associação de estirpes nodulíferas do gênero com condições edáficas particulares. Ainda, os resultados das análises filogenéticas sugerem que os isolados agrupados no clado II na árvore filogenética dos genes recA-gyrB podem representar uma nova espécie de Paraburkholderia, reinterando a importância de estudos de diversidade com plantas leguminosas nativas e endêmicas. .
Floristic surveys performed in the “Campos Gerais” (Paraná, Brazil) indicate that Fabaceae is one of the most species-rich and abundant families. These studies also pointed out the high diversity and endemism of Mimosa spp. Our study report the diversity of rhizobia isolated from root nodules of native Mimosa gymnas Barneby. Twenty-nine strains were obtained from from nodulating M. gymnas in three areas of Guartelá State Park, one of the most important conservation unities of the “Campos Gerais”; soils of these areas were characterized as sandy, acid, poor in nutrients and organic matter and with high aluminum contents. The phylogenetic tree constructed with partial 16S rDNA sequences grouped the strains in a larger cluster and some strains were more related with Paraburkholderia nodosa, although some strains were more related to P. bannensi. The analysis of the genomic profile by BOX-PCR revelead a high degree of intraspecific variability among the isolates. Results based on phylogeny of concatened genes recA-gyrB divided the strains in two large clusters. The cluster II didn’t grouped with any type strain and the isolates showed a nucleotide identity of 16S rDNA of at most 97% with P. nodosa. The nodC phylogeny grouped all the strains into a well-supported clade, not grouping with any know strain of Paraburkholderia genus. Our results support that Paraburkholderia are the main symbionts of Mimosa in South America and the association of nodulating strains of this genera with particular edaphic conditions. Also, the results of the phylogenetic analysis suggest that the isolates grouped in cluster II in the recA-gyrB phylogenetic tree may represent a new species of Paraburkolderia, highlighting the importance of diversity studies with native and endemic leguminous plants.
Shava, Soul. "The use of indigenous plants as food by a rural community in the Eastern Cape : an educational exploration." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1003699.
Full textFrancis, Matthew D. "Interspecific Competition Between Hygrophila polysperma and Ludwigia repens, Two Species of Importance in the Comal River, Texas." Thesis, University of North Texas, 1999. https://digital.library.unt.edu/ark:/67531/metadc278133/.
Full textChellan, Nireshni. "The antidiabetic and antioxidant properties of Athrixia phylicoides aqueous extract : an in vitro and ex vivo assessment." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6612.
Full textENGLISH ABSTRACT: Introduction: Athrixia phylicoides is an aromatic, indigenous shrub with high antioxidant content and numerous indigenous medicinal properties inferred by ingestion of an herbal brew of the plant. Commercialization of “bush tea” (derived from A. phylicoides) holds economic and developmental potential for indigenous communities provided the safety and efficacy of the herbal tea is established. Recently A. phylicoides has been shown by McGaw et al. (2007) to have similar antioxidant activity to Rooibos tea, and a unique, new flavonol (i.e. a polyphenolic antioxidant plant metabolite) 5-hydroxy-6,7,8,3′,4′,5′-hexamethoxyflavon-3-ol, unique to A. phylicoides, was isolated by Mashimbye et al. in 2006. With changes in the socio-economic climate and a new trend in merging Western lifestyle with traditional practices, new interest has been shown in herbal/natural remedies. Study Aim: The aim of this study was to firstly, determine the in vitro effect of A. phylicoides aqueous extract on glucose metabolism in cell lines that mimic the three key organs implicated in glucose homeostasis. Secondly, the study aimed to determine the potential ex vivo antioxidant and anti-inflammatory effect of the extract in pancreatic β-cells and peripheral mononuclear cells respectively. Methods: Leaves and fine twigs of A. phylicoides were processed into an aqueous extract. C2C12, Chang and 3T3-L1 cells were cultured under standard conditions and acutely exposed to increasing concentrations of extract and water vehicle, as well as 1 μM insulin and metformin as positive controls. Glucose uptake from 8 mM glucose culture media was determined using a fluorimetric oxidase method. Radioactive 14C-glucose oxidation to 14CO2 and determination of glycogen content of cells were used to assess the fate of intracellular glucose. RT-PCR was used to assess the extract effect on insulin-signalling gene expression. The antioxidative effect of A. phylicoides extract in pancreatic β-cells isolated from Wistar rats was determined by measuring nitric oxide (NO) production in response to hyperglycemic conditions. NO was labelled with diaminofluorocein diacetate and fluorescence was measured using flow cytometry. Insulin secretion of pancreatic β- cells was measured using radio-immuno assay. The anti-oxidative effect of the extract in lipopolysaccharide-stimulated peripheral mononuclear cells isolated from Wistar rats was determined by measuring the production of TNF-α using an ELISA kit. Results: C2C12 myocytes showed maximal increased glucose uptake at the 0.05 μg/μl extract concentration (228.3% ± 66.2, p<0.001). In Chang cells, A. phylicoides extract maximally increased the amount of glucose taken up at the 0.05 μg/μl concentration (134.5% ± 2.5, p<0.05). In 3T3-L1 cells, the extract maximally increased the amount of glucose taken up at the 0.025 μg/μl concentration (143.5% ± 10.3, p<0.001). An extract-induced increase in insulin receptor and glucose transporter four expression was seen in C2C12 myocytes. The oxidation of 14C-glucose to 14CO2 by C2C12 myocytes was maximally increased following acute exposure to the extract at 0.1 μg/μl (2919.3 fmol/1x10^6 cells ± 428, p<0.01). The oxidation of 14C-glucose to 14CO2 by Chang cells was maximally increased following acute exposure to extract at 0.1 μg/μl (4476.7 fmol/1x10^6 cells ± 1620, p<0.05); as seen in the C2C12 cells. A. phylicoides extract increased glycogen storage at all three concentrations tested in Chang cells, but maximally at the 0.025 μg/μl concentration (13.6 μg/1x10^6 cells ± 0.7, p<0.05). A. phylicoides extract did not have any measurable effect on the oxidative status of β-cells or the anti-inflammatory status of peripheral mononuclear cells. The extract did show an increase in first phase insulin secretion of β-cells in hyperglycemic conditions, although it was not significant. Conclusion: Athrixia phylicoides aqueous extract stimulates in vitro glucose uptake and metabolism in an insulin-mimetic manner, suggesting that this extract could potentially be beneficial to type two diabetics as an adjunct therapy.
AFRIKAANSE OPSOMMING: Inleiding: Athrixia phylicoides is 'n aromatiese, inheemse struik met 'n hoë antioksidant inhoud. Vele tradisionele medisinale eienskappe is gekoppel aan die ingestie van 'n kruie brousel van die plant, wat ook bekend as “bostee” is. Kommersialisering van “bostee” hou ekonomiese en ontwikkelings potensiaal in vir inheemse gemeenskappe mits die veiligheid en effektiwiteit van die kruietee bevestig kan word. McGaw et al. (2007) het onlangs bevind dat A. phylicoides se antioksidant aktiwiteit vergelykbaar is met die van rooibostee. 'n Unieke nuwe flavonol ('n polifenoliese antioksidant plant metaboliet) 5-hydroksie-6,7,8,3′,4′,5′-hexamethoksieflavon-3-ol, eie aan A. phylicoides, is deur Mashimbye et al. in 2006 geïsoleer. Met veranderings in die sosio-ekonomiese klimaat en 'n nuwe tendens om die westerse lewenstyl met tradisionele gebruike aan te vul word nuwe belangstelling in kruie/natuurlike rate ondervind. Studie Doelwitte: Die doelwitte van hierdie studie was eerstens om die in vitro effek van A. phylicoides waterekstrak op die glukosemetabolisme van drie sellyne wat die sleutel organe naboots wat glukosehomeostase beheer, te bepaal. Tweedens, is die potensiële ex vivo antioksidant en anti-inflammatoriese effek van die ekstrak op pankreatiese β-selle en perifere mononuklêere-selle onderskeidelik ondersoek. Metodes: n Waterige ekstrak is van die blare en fyn takkies van A. phylicoides berei. C2C12, Chang and 3T3-L1 selle is gekultuur onder standaard kondisies en akuut blootgestel aan stygende ekstrakkonsentrasies. Water het as kontrole gedien, met 1 μM insulien en metformien as positiewe kontroles. Glukose opname vanuit 8 mM glukose kultuurmedia is bepaal deur 'n fluorimetriese oksidase metode. Radioaktiewe 14C-glukose-oksidasie na 14CO2 en die bepaling van die glukogeen inhoud van selle is gebruik om die lot van intrasellulêre glukose te bepaal. RT-PKR is gebruik om die effek van die ekstrak op die insulien-seinpad geen-uitdrukking te ondersoek. Die antioksidant effek van A. phylicoides ekstrak in pankreatiese β-selle geïsoleer van Wistar rotte, is bepaal deur stikstofoksied (NO) produksie na aanleiding van hiperglukemiese kondisies. NO is met diaminofluorosien diasetaat gemerk en die fluoresensie gemeet deur vloeisitometrie. Insulien afskeiding deur die pankreatiese β-selle is deur radio-immuno metode bepaal. Die anti-oksidatiewe effek van die ekstrak op lipopolisakkaried-gestimuleerde perifere mononuklêere-selle afkomstig van Wistar rotte is bepaal deur die meting van TNF-α produksie met 'n ELISA kit. Resultate: C2C12 miosiete het 'n maksimale toename in glukoseopname by 'n 0.05 μg/μl ekstrakkonsentrasie (228.3% ± 66.2, p<0.001) gehad. Dieselfde ekstrakkonsentrasie het maksimale toename in glukoseopname in Chang selle (134.5% ± 2.5, p<0.05 getoon. In 3T3-L1 selle is maksimale toename in die glukoseopname by 'n konsentrasie van 0.025 μg/μl (143.5% ± 10.3, p<0.001) bereik. 'n Ekstrak-geinduseerde verhoging in die insulienreseptor en glukosetransporter vier ekspressie is in C2C12 miosiete waargeneem. Die oksidasie van 14C-glukose na 14CO2 deur C2C12 miosiete is maksimaal verhoog deur akute blootstelling aan die ekstrak by 'n konsentrasie van 0.1 μg/μl (2919.3 fmol/1x10^6 cells ± 428, p<0.01). Die oksidasie van 14C-glukose na 14CO2 deur Chang selle was maksimaal verhoog deur akute blootstelling aan die ekstrak by 'n konsentrasie van 0.1 μg/μl (4476.7 fmol/1x10^6 cells ± 1620, p<0.05) soos gevind in die C2C12 selle. Die ekstrak het glukogeenstoring verhoog teen al drie die konsentrasies waarteen getoets is in Chang selle, maar 'n maksimale effek is gevind by 'n konsentrasie van 0.025 (13.6 μg/1x10^6 cells ± 0.7, p<0.05). A. phylicoides ekstrak het nie 'n meetbare effek op die oksidatiewe status van β-selle of die anti-inflammatoriese status van perifere mononuklêere-selle gehad nie. Die ekstrak het wel 'n verhoging in die eerstefase insuliensekresie van β-selle in hyperglukemiese kondisies gehad, alhoewel die verhoging nie statisties betekenisvol was nie. Afleiding: Athrixia phylicoides waterekstrak stimuleer in vitro glukoseopname en metabolisme in 'n insulin-mimetiese manier, wat beteken dat die ekstrak potensiëel voordele vir tipe twee diabete kan inhou as aanvullingsterapie.
Tauleigne, Chagas Gomes Ana C. "Différenciation et hybridation chez trois espèces endémiques d'Armeria (Plumbaginaceae) du littoral portugais." Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210953.
Full textNyambe, Mutenta Nsokolo. "An investigation of the potential anti-diabetic (insulinomimetic) activity of anti-oxidant compounds derived from Sargassum heterophyllum." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1021020.
Full textMahran, Ehab Ghareeb Mohammed [Verfasser], and Michael [Akademischer Betreuer] Keusgen. "Phytochemical and Biological Investigation of some Endemic Plants of Egypt with Development of a New HPTLC-β- Glucuronidase Inhibition Assay / Ehab Mahran ; Betreuer: Michael Keusgen." Marburg : Philipps-Universität Marburg, 2020. http://d-nb.info/1223130118/34.
Full textMahran, Ehab [Verfasser], and Michael [Akademischer Betreuer] Keusgen. "Phytochemical and Biological Investigation of some Endemic Plants of Egypt with Development of a New HPTLC-β- Glucuronidase Inhibition Assay / Ehab Mahran ; Betreuer: Michael Keusgen." Marburg : Philipps-Universität Marburg, 2020. http://d-nb.info/1223130118/34.
Full textCloete, Elizabeth Carinus. "A floristic study of a portion of the Pondoland Centre of Endeminism, Port St Johns, South Africa." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1003757.
Full textDE, SIMONE LEOPOLDO. "Ecological aspects of plants inhabiting Mediterranean cliffs. Challenges and prospects of life in vertical environments." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/443140.
Full textBeton, Damla. "Effects Of Climate Change On Biodiversity: A Case Study On Four Plant Species Using Distribution Models." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613538/index.pdf.
Full text(2) Range expansion, especially for generalist species
and (3) Range contradiction, especially for Euro-Siberian mountainous species. Species modelling can be used to understand possible responses of plant species to climate change in Turkey. Modelling techniques should to be improved, however, especially by integrating other parameters such as biotic interactions and through a better understanding of uncertainties.
Grambo, Andrew A. "Functional design opportunities for water conservation through native landscape restoration in southwestern Idaho, U.S.A." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1286422.
Full textDepartment of Landscape Architecture
Craven, Patricia. "Phytogeographic study of the Kaokoveld Centre of Endemism." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1325.
Full textThesis (PhD (Botany and Zoology))—University of Stellenbosch, 2009.
An intriguing biogeographic area that lies in northwestern Namibia and southwest Angola is known for having numerous endemic taxa. It had, however remained vaguely defined because of the complex flora, the arid environment and confusing and inconsistent use of biogeographic terminology. This thesis redefined the area as a centre of endemism based on recurrent patterns of plant distributions by shared species. The end result is a well-defined entity with regard to, not only geographic boundaries and floristic elements, but also to its history and floristic relationships. A vast amount of information on the plants of the area, their affinities and their distributions is required for a study of this nature and this was undertaken through literature surveys and field work. All the relevant information on Namibia and the southwestern Angolan flora, i.e. the region and the study area, were incorporated into a database which formed the bases for numerical analysis and GIS studies. The database also brought together a wide range of information from literature sources that included facts and theories about the past and present physical environment. The structure of the database permitted querying this electronic data in many different ways. To accommodate the wide variety of subjects in a logical way, the thesis was divided into two sections. Section A concentrated on the region and provided background information and context. The theory, terminology and phytogeographic studies in the region were evaluated as a first step. A large amount and variety of palaeo-environmental and palaeo-ecological information, pertinent to the region was incorporated. Secondly the flora was assessed. Besides the diversity, distribution patterns of the plants within and outside the region, including disjunct distributions, phylogenies were assessment. Finally taxa with similar geographic ranges were grouped. These entities were mapped and both the taxa and their environments were evaluated Section B focused on the core area, namely the Kaokoveld Centre of Endemism, which was delimited by numerical techniques, and then investigated further with regard to its floristic components, relationships and origins. The flora and endemic components are described in detail. The result is a well-defined centre of endemism which comprises one endemic family, 10 endemic genera and nearly 300 endemic species. The flora of the Centre includes about 1600 species in nearly 550 genera in 130 families. Three floristic Groups, identified in section A, that have a remarkable number of endemics are found in the Centre. Historical explanations for the distribution patterns were suggested and the Group that includes Welwitschia mirabilis Hook.f., has been shown to be linked to the Arid Corridor. The demand for accurate knowledge about biodiversity has been highlighted by the Convention of Biological Diversity and there are a remarkable number of users with different requirements today. This study provides a much needed alternate look at the plants of the region, as well as a summation of the principle phytogeographic elements of the Namibian flora. It also includes a new phytogeographic classification and map of the floristic Groups of Namibia, which will contribute to defining floristic areas in the region.
Gilbert, Benjamin. "Determinants of native and non-native plant distributions in a temperate forest understory." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19731.
Full textCimi, Phumlani Viwe. "An investigation of the indigenous ways of knowing about wild food plants (imifino) : a case study /." Thesis, Rhodes University, 2009. http://eprints.ru.ac.za/1582/.
Full textEsteves, Ana Teresa Martins. "Plantas endémicas portuguesas com utilização medicinal." Master's thesis, [s.n.], 2015. http://hdl.handle.net/10284/5307.
Full textOs primeiros medicamentos que surgiram tinham como base os conhecimentos etnobotânicos das populações, ou seja, as populações conheciam as plantas locais e as suas aplicações para o tratamento e prevenção das patologias. Com o presente trabalho procura-se descrever os princípios ativos presentes nas plantas e descrever a aplicação medicinal de plantas endémicas portuguesas. No desenvolvimento do trabalho verificou-se que em Portugal existe uma base de dados online onde é possível consultar todas as plantas endémicas e a região onde se encontram, porém as suas aplicações não se encontram descritas. O estudo das plantas medicinais no nosso país baseia-se, essencialmente, nos estudos etnobotânicos desenvolvidos pelos investigadores nas diferentes regiões. No entanto, os estudos fitoquímicos e farmacoterapêuticos desenvolvidos em plantas endémicas são, ainda, escassos. Pela análise dos estudos etnobotânicos analisados verificou-se que a grande parte das plantas apresentam propriedades que têm efeitos no tratamento de doenças do sistema gastrointestinal, seguidas das que atuam ao nível da pele e por fim com efeito no sistema renal e hepático. Pela análise dos estudos fitoquímicos analisados verificou-se que a grande maioria das plantas descritas apresentam compostos com propriedades antioxidantes, antibacterianas e antifúngicas. Algumas plantas também já começam a ser aplicadas no tratamento e prevenção de patologias neurodegenerativas.
The first medicines that emerged were based on the ethnobotanical knowledge of populations i. e., people used the local plants for the treatment and prevention of diseases. The present work seeks to describe the active substances present in plants and describe the medicinal application of Portuguese endemic plant species. In developing this work we found that in Portugal there exists an online database where it is possible see all the endemic plant species and their distribution. The study of medicinal plants in Portugal is based primarily on ethnobotanical studies carried out by researchers in the different regions. Phytochemical and pharmacotherapeutic studies developed in Portugal with endemic plant species are still scarce. The existing studies revealed that a large part of the endemic Portuguese plants exhibit components that have a positive impact in the treatment of diseases of the gastrointestinal system, beneficial effects on the skin and renal and hepatic systems. The phytochemical studies of endemic Portuguese plants also revealed that the vast majority of plants studied have compounds with antioxidant, antibacterial and antifungal properties. Certain plants are also starting to be applied in the treatment and prevention of neurodegenerative diseases.
Fourie, Saskia. "The restoration of an alien-invaded riparian zone in grassy fynbos, South Africa." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1003840.
Full textGonzález, Orenga Sara. "Mecanismos de tolerancia a estrés salino e hídrico en plantas endémicas, raras o amenazadas." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/168443.
Full text[CA] La sequera i la salinitat són els factors ambientals que més afecten les plantes, encara que en general, les plantes mediterrànies estan ben adaptades a les condicions adverses. Les previsions estimen que a causa del calfament global les condicions ambientals es tornaran més estressants, especialment en les zones semi-àrides i àrides com moltes àrees de la Península Ibèrica. Aquestes condicions poden afectar la presència de moltes espècies silvestres, especialment, de les que ja de per si estan amenaçades, són rares o endèmiques. Tant la sequera com l'estrès salí provoquen l'activació d'una sèrie de mecanismes de defensa o resposta de les plantes, que inclouen entre altres, el control del transport iònic, l'acumulació de soluts compatibles u osmolits, i l'activació de sistemes antioxidants. Per a contribuir a la conservació i/o reintroducció de les espècies d'interès en hàbitats prioritaris s'ha realitzat un estudi multidisciplinari abastant els paràmetres que poden afectar les seues poblacions, com el clima, el sòl, i la vegetació acompanyant, al costat d'estudis comparatius sobre les respostes a la sequera i a la salinitat. Per a entendre millor els mecanismes de tolerància s'han inclòs en l'estudi a més dels tàxons d'interès conservacionista, espècies relacionades genèticament amb diferents nivells de tolerància. L'estudi presenta dos objectius principals: i) establir la tolerància relativa a l'estrès hídric i salí de les espècies sobre la base de la seua distribució en la naturalesa i en les anàlisis realitzades en camp i, en funció de la inhibició relativa del seu creixement sota condicions provocades d'estrès; i, ii) avaluar els canvis bioquímics induïts per l'estrès analitzant diferents mecanismes de resposta (inhibició de la fotosíntesi, transport iònic, acumulació de osmolits, mecanismes antioxidants).
[EN] Drought and salinity are the environmental factors that most affect plants, although in general Mediterranean plants are well adapted to adverse conditions. Predictions estimate that, due to global warming, environmental conditions will become more stressful, especially in semi-arid and arid areas, such as many areas of the Iberian Peninsula. These conditions may affect the presence of many wild species, especially those that are already threatened, rare or endemic. Both drought and salt stress cause the activation of a series of defence or response mechanisms in plants, which include, among others, the control of ionic transport, the accumulation of compatible solutes or osmolytes, and the activation of antioxidant systems. To contribute to the conservation and/or reintroduction of species of interest in priority habitats, a multidisciplinary study has been carried out covering parameters that may affect their populations, such as climate, soil and accompanying vegetation, together with comparative studies on responses to drought and salinity. To better understand tolerance mechanisms, genetically related species with different levels of tolerance have been included in the study, in addition to taxa of conservation interest. The study has two main objectives: i) to establish the relative tolerance to water and salt stress of the species according to their distribution in nature and based on field analyses and, according to the relative inhibition of their growth under stress-induced conditions; and, ii) to evaluate stress-induced biochemical changes by analysing different mechanisms (inhibition of photosynthesis, ionic transport, osmolyte accumulation, antioxidant mechanisms).
This research was partially funded by Project AICO/2017/039 from the Generalitat Valenciana.
González Orenga, S. (2021). Mecanismos de tolerancia a estrés salino e hídrico en plantas endémicas, raras o amenazadas [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/168443
TESIS
Asafo-Adjei, Robert Tetteh. "From imifino to umfuno : a case study foregrounding indigenous agricultural knowledge in school-based curriculum development." Thesis, Rhodes University, 2004. http://hdl.handle.net/10962/d1003731.
Full textYu, Pi-Ju, and 游璧如. "The Anti-tumor Effects of Taiwan Endemic Plants." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/06662912182831585587.
Full text臺北醫學大學
生藥學研究所
93
Taiwan is located in the subtropics and abounded with many endemic plants. These endemic plants of Taiwan are good sources for developing new drugs. Cancer is one of the serious causes of death in humans. However, many tumors have shown resistances to drug, and many chemotherapeutic drugs have also been reported to cause serious side effects in clinical studies. Therefore, it is urgent to develop new anti-tumor drugs. In this study, we evaluated 4 Ericaceae plants and 24 kinds of endemic plants of Taiwan. In the first part, 24 kinds of endemic plants were collected from mountains in northern Taiwan and extracted with 70% Acetone. The cytotoxicity effects of these extracts were evaluated by MTT assay in human gastric cancer cell lines, AGS, SNU-1, and normal cell line, Chang Liver cells. The results indicated that Hydrangea angustipetala Hayata potential than other endemic plants in inhibiting the growth of tumor cells. Column chromatography combined with cytotoxic bioassay-guided fractionation was performed to isolate the cytotoxicity compounds in this study. The anti-tumor effect of H. angustipetala was also evaluated by P388D1 bearing CDF1 mice. The 40% MeOH eluted fraction(D40M)by diaion gel showed better anti-tumor effects in both in vitro and in vivo studies. IC50 values of D40M were 3.47 μg/ml in AGS and 3.48 μg/ml in SNU-1 cells, and the percentage of life span increase was 120% in P388D1 bearing CDF1 mice model. Moreover, (+)-febrifugine and trans-3-p-coumaryalquinic acid were isolated as active anti-tumor products in H. angustipetala for the first time. Both compounds were able to suppress the proliferation of AGS and SNU-1 cells in a time- and dose-dependent manner. Based on the results from the Western blotting assay, these products induced apoptosis in human gastric cancer cell lines. The (+)-febrifugine showed stronger cytotoxicity than trans-3-p-coumaryalquinic acid in both in vitro and in vivo studies. Taken together, we suggested that (+)-febrifugine from Hydrangea angustipetala Hayata was a good leader compound to develop an anticancer drug. In studying of the anti-tumor effects of Ericaceae plants, 16 samples from four kinds Ericaceae Rhododendron plants were examined by MTT assay. Among them, the 100% EtOH extracts of R. kanehirai Wilson and R. breviperulatum Hayata showed stronger cytotoxicity, and were evaluated by P388D1 animal model. The result indicated that the 100% EtOH extracts from the leaves of R. breviperulatum could prolong the survival days of CDF1 mice under 5 mg/kg, the percentage increase in life span was 134%.
Chauke, Hlayisa Michael. "Mavito ya swimila swa ndhavuko eka Xitsonga eka ndhawu ya ka Malamulele exifundzeni xa Limpopo." Thesis, 2007. http://hdl.handle.net/10386/2293.
Full textTSENG, KUAN-YU, and 曾冠瑜. "Pattern Design with Taiwan’s Endemic Species of Aquatic Plants." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8k58t2.
Full text國立臺中教育大學
美術學系碩士班
107
Aesthetics come from the feeling and perception of life. We experience the true meaning of life through our sensory organs. As time presses forward, art and culture accumulate and assemble. The practice of aesthetic learning, natural resources, art, and culture is the central concept that this creative work aims to express. Taiwan endemic species are valuable assets, and the vitality of aquatic plants are particularly striking. The creative research uses this theme to take three directions. The first phase is the incubation, which explains the creative background, motive, and goal. The second phase is the collation of relevant literature that discusses Taiwan endemic aquatic plants, including the drawings of the plants and the research and documentation of their changes, followed by a study on the application and types of print patterns. The third phase is the planning and execution of the creative work, using connotative idioms to apply to the lifestyles of aquatic plants, and then as the names of the respective chapters of the series. Four series are planned: “tenderness,” “life,” “vigor,” “leisure.” The works are then created using a continuous pattern design technique. The production of 16 pattern designs will then also integrate with daily essential products. The creation of the patterns reinterpreted aquatic plants and demonstrated the passion of life of endemic species. The project also realizes and practices life aesthetics, and instill art into everyday life, improving the value of cultural creativity.