Dissertations / Theses on the topic 'Asexual'
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Cortes, Blanca R. "Horizontal genetic transfer in asexual fungi." FIU Digital Commons, 2000. http://digitalcommons.fiu.edu/etd/2644.
Full textLaaka-Lindberg, Sanna. "Ecology of asexual reproduction in hepatics /." Helsinki : Yliopistopaino, 2000. http://ethesis.helsinki.fi/julkaisut/mat/ekolo/vk/laaka-lindberg.
Full textPolak, Eline. "Asexual sporulation in the basidiomycete Coprinus cinereus /." [S.l.] : [s.n.], 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13125.
Full textGingas, Vicki Marie. "Asexual embryogenesis and plant regeneration in Quercus /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487588939088322.
Full textJenkins, Christina. "Resource limitation in sexual vs. asexual Potamopyrgus antipodarum." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/521.
Full textSöderberg, Jonas. "Surviving the ratchet : Modelling deleterious mutations in asexual populations." Doctoral thesis, Uppsala universitet, Molekylär evolution, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-157897.
Full textRicci, Lorenzo. "A new model to study alternative developments : asexual propagation and regeneration in the basal chordate Botryllus schlosseri." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066683.
Full textIn addition to embryogenesis, the colonial ascidians Botryllus schlosseri evolved two alternative developmental pathways leading to the same final structure: the adult body, or zooid. These non-embryonic ontogenesis occur during distinct biological processes: palleal budding (PB) and vascular budding (VB). PB is a process of asexual propagation, with a very stereotyped morphogenesis. Conversely, VB is a purely regenerative phenomenon, induced in the vascular system of the colony by the ablation of all zooids and palleal buds. My research work followed the objective to characterize the molecular and cellular basis of both PB and VB in B. schlosseri. The study of meso-, endo- and ectodermal lineage marker genes revealed the existence of presumptive territories of these lineages in the early palleal and vascular buds and that a single developmental program was launched in both VB and PB. Neural and muscle fates were studied in more detail for PB, indicating a potential double function, both neuro- and myo-genic for the dorsal tube, a structure so far associated with the nervous system only. A detailed morphological description of VB allowed to identify stereotyped stages during early regeneration. Eventually, a transcriptomic characterization of early VB and PB processes initiated an unbiased study of the molecular basis underlying the budding phenomenon in Botryllus. The overall goal of these research works is to unravel the molecular and genetic basis that facilitated, in Botryllus and globally in metazoan, the evolution of alternative developmental pathways
Docking, T. Roderick. "The evolution of retrotransposon sequences in four asexual plant species /." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81327.
Full textLuk, Ka Wing. "An exploratory study of asexual marriage on a Chinese website." HKBU Institutional Repository, 2013. https://repository.hkbu.edu.hk/etd_oa/30.
Full textDench, Jonathan. "New Computational Approaches to Study the Evolution of Asexual Haploids." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40415.
Full textHagen, R. H., and D. A. Palzkill. "Air-layering as a Method of Asexual Propagation of Mesquite." College of Agriculture, University of Arizona (Tucson, AZ), 1989. http://hdl.handle.net/10150/216058.
Full textCarrillo, Medrano Claudia del Carmen. "Mathematical models for the coexistence of sexual and asexual conspecifics." Thesis, University of Bath, 2002. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269840.
Full textRice, Christopher Steven. "Evolution of meiosis genes in sexual vs. asexual Potamopyrgus antipodarum." Thesis, University of Iowa, 2015. https://ir.uiowa.edu/etd/1739.
Full textLoewe, Laurence. "Evolutionary bioinformatics predicting genetic stability of asexual genomes by global computing /." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969894201.
Full textJohnston, Amal Joseph. "Functional genomics of sexual and asexual reproduction in Arabidopsis and relatives /." Zürich, 2007. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000254731.
Full textTiley, Anna Mystica Mendez. "Investigating asexual sporulation in Zymoseptoria tritici, a fungal pathogen of wheat." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.715767.
Full textMaxwell, Danielle. "It's not just about sex : asexual identity and intimate relationship practices." Thesis, University of York, 2017. http://etheses.whiterose.ac.uk/18006/.
Full textBrandt, Alexander [Verfasser]. "No sex, No problem? Mutation accumulation in asexual animals / Alexander Brandt." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1234848937/34.
Full textCianciolo, Jennifer M. "Evolutionary persistence and co-existence of sexual and asexual oribatid mites." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3331269.
Full textTitle from PDF t.p. (viewed on Jul 27, 2009). Source: Dissertation Abstracts International, Volume: 69-11, Section: B, page: 6533. Advisers: Michael Wade; Curt Lively.
Bui, Linh Thuy. "Molecular dissection of asexual reproduction in the model fern Ceratopteris richardii." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/6380.
Full textTvedte, Eric S. "Genome evolution in parasitic wasps: comparisons of sexual and asexual species." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6516.
Full textPuisay, Antoine. "La reproduction sexuée et asexuée des coraux face aux changements environnementaux : Implications pour la conservation et la restauration des récifs coralliens." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEP030.
Full textClimate change and increasing temperature impact abundance and distribution of thousands of organisms, aquatic and terrestrial, and some ecosystems are particularly sensitive to these global changes. Increasing temperature is the principal threat for coral populations, which are ecological engineers of coral reef ecosystems. While research on coral reefs has first sought to study adult corals, data are still lacking on early life stages of corals. As sexual and asexual reproduction may play a key role in the conservation and restoration of coral reefs, my doctoral research aims to better understand changes on sexual and asexual reproduction in the face of rising temperature. The first axis of my Ph. D. was built on the response of early life stages to increasing temperature, in order to assess whether pre-exposure of early life may improve their ulterior performance. Among the different experiments performed on the genus Acropora, I highlighted 1) a high thermal tolerance (+2-3°C above ambient temperature) of gametes, 2) a higher sensibility of oocytes than sperm to rising temperature exposure, and 3) the pivotal role of gamete thermal history on fertilization output. Finally, I identified optimal pre-exposure conditions in order to maximize fertilization success. While an increasing interest in sexual reproduction was observed these last years, asexual reproduction and fragmentation still remain the main tool to restore damaged reefs. Thus, in the second axis of my doctoral project, I investigated the phenotypic plasticity of corals by growing 3 different species of corals across 3 different environments. Their growth rates, health status and survival probability were determined. Results from this axis showed that differences were observed at the interspecific and intraspecific levels. This work revealed that a selection based on phenotypic plasticity among different life-traits (growth rates and health status) and different environments should allow to increase coral reef restoration strategies. Hence the selection of individuals (asexual reproduction) in a species based on coral common garden experiment allow to identify individuals of interest to use as restoration biological materials. Additionally, thermal pre-conditioning of early life stages (sexual reproduction) is another way to increase efficiency of restoration measures in the face of rising temperature. My doctoral research provided new information regarding physiological and biological processes of scleractinian corals facing environmental changes and proposed new solutions for restorations based on sexual and/or asexual reproduction
Griffin, Clare Louise, and clare griffin@flinders edu au. "A comparison of the ecology and behaviour of parthenogenetic and sexual taxa of the Australian skink, Menetia greyii: implications for coexistence." Flinders University. School of Biological Sciences, 2006. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20070202.132116.
Full textRenaut, Sébastien. "Mean fitness of long-term sexual and asexual populations of Chlamydomonas in benign environments." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80862.
Full textRicci, Lorenzo. "A new model to study alternative developments : asexual propagation and regeneration in the basal chordate Botryllus schlosseri." Electronic Thesis or Diss., Paris 6, 2015. http://www.theses.fr/2015PA066683.
Full textIn addition to embryogenesis, the colonial ascidians Botryllus schlosseri evolved two alternative developmental pathways leading to the same final structure: the adult body, or zooid. These non-embryonic ontogenesis occur during distinct biological processes: palleal budding (PB) and vascular budding (VB). PB is a process of asexual propagation, with a very stereotyped morphogenesis. Conversely, VB is a purely regenerative phenomenon, induced in the vascular system of the colony by the ablation of all zooids and palleal buds. My research work followed the objective to characterize the molecular and cellular basis of both PB and VB in B. schlosseri. The study of meso-, endo- and ectodermal lineage marker genes revealed the existence of presumptive territories of these lineages in the early palleal and vascular buds and that a single developmental program was launched in both VB and PB. Neural and muscle fates were studied in more detail for PB, indicating a potential double function, both neuro- and myo-genic for the dorsal tube, a structure so far associated with the nervous system only. A detailed morphological description of VB allowed to identify stereotyped stages during early regeneration. Eventually, a transcriptomic characterization of early VB and PB processes initiated an unbiased study of the molecular basis underlying the budding phenomenon in Botryllus. The overall goal of these research works is to unravel the molecular and genetic basis that facilitated, in Botryllus and globally in metazoan, the evolution of alternative developmental pathways
Hunter, Shenae. "Asexual cultivation techniques of the red macroalgae Asparagopsis taxiformis for commercial application." Thesis, Hunter, Shenae (2022) Asexual cultivation techniques of the red macroalgae Asparagopsis taxiformis for commercial application. Masters by Research thesis, Murdoch University, 2022. https://researchrepository.murdoch.edu.au/id/eprint/65504/.
Full textCordle, Angela Ruth. "Genes involved in asexual sporophyte development in Ceratopteris richardii and Arabidopsis thaliana." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/4598.
Full textBode, Susanna Natalia Saskia. "Phylogeny and phylogeography of European sexual and asexual lineages of Eucypris virens (Crustacea:Ostracoda)." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531120.
Full textPhillips, Sarah Wynne. "Asexual overwintering and morph determination in the lettuce root aphid Pemphigus bursarius (L.)." Thesis, University of Birmingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368424.
Full textHanson, Sara Jeanette. "The molecular evolution of reproduction in animals: insights from sexual and asexual rotifers." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/1618.
Full textPark, Arum. "Parthenogenesis in Hesiod’s Theogony." Penn State University Press, 2014. http://hdl.handle.net/10150/622192.
Full textEarnshaw, Diana Mary dos Santos. "Variation in aggressiveness and fungicide sensitivity in sexual and asexual progeny of Phytophthora infestans." Thesis, Bangor University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409470.
Full textRiley, Rohan. "Clues of Sexual Reproduction in the 'Ancient Asexual' Fungal Lineage: The Arbuscular Mycorrhizal Fungi." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24035.
Full textKay, William Tudor. "Novel insights into the asexual life-cycle of the wheat-leaf pathogen Zymoseptoria tritici." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/31538.
Full textKitade, Yuki. "Functional analysis of signaling components regulating pathogenicity and asexual/sexual development in Bipolaris maydis." Kyoto University, 2019. http://hdl.handle.net/2433/242717.
Full text0048
新制・課程博士
博士(農学)
甲第21840号
農博第2353号
新制||農||1069(附属図書館)
学位論文||H31||N5212(農学部図書室)
京都大学大学院農学研究科地域環境科学専攻
(主査)教授 田中 千尋, 教授 本田 与一, 准教授 刑部 正博
学位規則第4条第1項該当
Li, Dan. "A map kinase pathway essential for mating and contributing to asexual development in Neurospora Crassa." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3936.
Full textMa, Xiping. "Effects of environmental factors on distribution and asexual reproduction of the invasive hydrozoan, Moerisia lyonsi." College Park, Md. : University of Maryland, 2003. http://hdl.handle.net/1903/99.
Full textThesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Awah, Nancy. "Studies on Plasmodium falciparum asexual blood stage antigens : RAP-2/RSP-2 and Pf332 in focus." Doctoral thesis, Stockholms universitet, Wenner-Grens institut, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-57255.
Full textAt the time of the doctoral defense, the following publication was unpublished and had a status as follows: Paper 3: Manuscript.
Blanco, Paananen Adrian, and Johan Storby. "Observing coevolution in simulated bacteria : Using asexual reproduction and simple direct mapped functions for decision-making." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146346.
Full textThompson, Faye Laura. "Somatic, genetic and evolutionary trade-offs between sexual and asexual reproduction in a clonal aquatic plant." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2002. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ65650.pdf.
Full textCrabtree, Sheri Beth. "SEXUAL AND ASEXUAL REPRODUCTIVE CHARACTERISTICS OF THE NORTH AMERICAN PAWPAW [ASIMINA TRILOBA (L.) DUNAL]." Lexington, Ky. : [University of Kentucky Libraries], 2004. http://lib.uky.edu/ETD/ukypssc2004t00208/etd.pdf.
Full textTitle from document title page (viewed Jan. 7, 2005). Document formatted into pages; contains viii, 80p. : ill. Includes abstract and vita. Includes bibliographical references (p. 74-79).
Kozlowski, Djampa. "Contribution des éléments transposables à l’adaptabilité de ravageurs de cultures en absence de reproduction sexuée." Electronic Thesis or Diss., Université Côte d'Azur, 2020. http://www.theses.fr/2020COAZ6028.
Full textRoot-knot nematodes (genus Meloidogyne) are among the most devastating plant parasites. These organisms present an important diversity of reproductive modes. Surprisingly, it has been observed that the most damaging species reproduce in a strictly asexual manner and some can bypass the host plant's resistance in a limited number of generations. Thus, although being unable to combine beneficial mutations from different individuals, these species can adapt to environmental changes. The adaptability and parasitic success of these species despite the absence of sexual reproduction seem paradoxical and must rely on other mechanisms capable of generating genetic plasticity. Transposable Elements (TEs) are DNA fragments capable of moving and multiplying in genomes. As a result, TEs can have functional and structural repercussions on genomes. Hence, TEs could be one of the mechanisms involved in generating the genetic diversity necessary for adaptability in Meloidogyne.By performing a comparative genomics analysis between 7 Meloidogyne species, I have shown that the TE landscape currently observed in these species seems to follow their evolutionary history and interspecies drift rather than life-history traits such as the reproduction mode. Furthermore, this analysis supports recent TE activity within all these species. The results also suggest that although TEs have recently been active within the genus Meloidogyne, their dynamics in the genomes appear to be species-specific and thus require targeted study.With this in mind, I have focused my efforts on M. incognita, arguably the most detrimental asexually reproductive species to agriculture. As a first step, I have annotated in detail the TE content in the genome of M. incognita. The TE content analysis confirmed these elements have probably been recently active in the genome. To better characterize this activity and its potential effects, I then estimated the mobility of these TEs through a comparative genomics analysis of 12 geographic isolates. I was able to identify several thousand loci in the genome where the frequencies of TE presence varied substantially between different isolates. Using a phylogenetic approach, I showed that these TE frequency variations followed the evolutionary history of the studied isolates. Compared to the reference genome, I have predicted TE neo-insertions, some with potential functional impact. Experimental validations carried out for several of these insertions confirmed the potential role of TEs in the genome plasticity in this species.During this analysis, I also identified TEs present at intermediate frequencies (different from 0 or 1) within each isolate, indicating variability between individuals despite the fact M. incognita is a supposedly clonal organism and that each isolate studied was derived from a single female. Focusing on the analysis of one of these isolates, we have experimentally validated several TE polymorphisms, confirming that there is significant genetic heterogeneity within the same isolate. Furthermore, by comparing sequencing data from the same isolate at two different time points, we predicted that a few TEs varied in frequency within the isolate within a small number of generations, implying these TEs participate in the dynamics of genetic diversity in this organism. These results lay the foundation for future analyses to determine whether TEs play an active role in the ability of species to adapt to their environment in the absence of sexual reproduction
Anciaux, Yoann. "Dynamiques éco-évolutives en populations asexuées : sauvetage évolutif dans le paysage adaptatif de Fisher." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT135/document.
Full textThe persistence ability of a population facing a stressing environmental change is a complex question at the connection between ecology and evolution. The process by which a population avoid extinction by adapting to the new stressing environmental conditions is termed evolutionary rescue. This particular case of eco-evolutionary dynamic is increasingly investigated both theoretically and experimentally, among other things in the context of the environmental changes from human activity. However, the studies modelling this process neglect the interactions between genotypes and environments impacting the evolutionary potential of the populations facing environmental changes. In the context of this thesis, I developed models integrating these interactions. To this end, I modelled the process of evolutionary rescue in asexual populations, facing abrupt environmental changes, using the adaptive landscape of Fisher (Fisher’s geometric model (1930)). This landscape allowed us to model the genotypes-environments interactions and their impact on the proportion of mutations able to save a population. Using two models, considering either the rescue of a population by a mutation of strong effect, either by a large number of mutation of small effect, we derived predictions for the probability of evolutionary rescue, which depends on the environmental conditions and the characteristics of the studied organism. These models can be parametrized on data from evolutionary experiments and their predictions compared to data of antibiotic treatments aiming on asexual pathogens. Beyond evolutionary rescue, the models developed in this thesis also gave tools to model other eco-evolutionary dynamics, integrating genotype-environment interactions and their effects on the distribution of mutations effects
Widmer, Chad L. "Influences of temperature and salinity on asexual reproduction and development of scyphozoan jellyfish from the British Isles." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/6326.
Full textvan, der Ventel Michelle. "The role of IL-4Ra signalling in gene deficient mice during asexual-stage Plasmodium chabaudi AS infection." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3438/.
Full textde, Lappe Joseph. ""Asexy and we know it" : the emergence of asexual activism as a sexual and gender social movement." Thesis, Open University, 2018. http://oro.open.ac.uk/58665/.
Full textPenkler, Gerald Patrick. "Construction and validation of a detailed kinetic model of glycolysis in asexual Plasmodium falciparum : a feasibility study." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2298.
Full textENGLISH ABSTRACT: In Africa alone, Plasmodium, the causative agent of malaria is estimated to kill a child, under the age of five every thirty seconds140. The ability of the parasite to rapidly attain resistance, has resulted in immunity of the parasite to all, except one group of frontline drugs. The need to develop novel drugs, vaccines and prevention strategies that are accessible and affordable for third world countries is of the utmost importance to prevent needless human suffering and death. The glycolytic pathway is an attractive drug target since it is the principal source of ATP for the parasite. Many of the glycolytic enzymes have been studied and proposed as drug targets, but the importance of these enzymes for the function of the pathway as a whole has not been considered. It is known, from the frameworks of metabolic control analysis, that control of the flux and metabolite concentration can be divided among the individual steps. Differential control analysis of Plasmodium and erythrocyte glycolysis may reveal potential drug targets. These analyses require a detailed kinetic model of Plasmodium glycolysis, and the feasibility of constructing and validating such a model was the aim of this study. In this work we determined the feasibility of constructing and validating a detailed kinetic model for the Plasmodium falciparum glycolytic pathway. Whether the construction and validation of this kinetic model was feasible or not was decided on the basis of the ability to: i) culture and isolate sufficient asexual parasites for enzymatic and steady state assays , ii) obtain kinetic parameters such as Km and Vmax for each glycolytic enzyme, either from literature or experimentally, iii) measure glycolytic fluxes, iv) determine glycolytic intermediate concentrations, v) construct a kinetic model from the kinetic parameters and vi) validate it with steady state glycolytic fluxes and metabolite concentrations Each of the above criteria were successfully addressed. In summary, the kinetic parameters and glycolytic fluxes that were measured experimentally, were used to construct and partially validate a detailed kinetic model, respectively. Further validation of the model by means of steady state metabolite concentrations was shown to be possible with the development of a suitable protocol to measure the glycolytic intermediate concentrations. The model presented in this work may play an important role in drug target identification and improving the current understanding of host-parasite interactions and glycolytic regulation.
AFRIKAANSE OPSOMMING: Plasmodium, die parasiet wat malaria veroorsaak, is in Afrika alleen elke dertig sekondes verantwoordelik vir die afsterwe van ’n kind jonger as vyf jaar. Die parasiet se vermoë om vinnig weerstand op te bou het daartoe gelei dat Plasmodium weerstandbiedend is teen byna alle nuwe teen-malaria middels, behalwe vir ’n enkele toonaangewende groep. Die ontwikkeling van nuwe malaria teen-middels is van uiterste belang om lyding te voorkom. ’n Goeie teiken vir teen-malaria middels is die glikolitiese padweg omdat die metaboliese padweg essensieël is vir die produksie van ATP, die energiebron van die parasiet. Desondanks die feit dat meeste van die glikolitiese ensieme al goed bestudeer en as teiken voorgestel is, is dit steeds onduidelik hoe hierdie ensieme saam funksioneer om die metaboliese weg, as geheel, tot stand te bring. Metaboliese kontrole analise het aangetoon dat die glikolitiese beheer verdeel is tussen die onderskeie glikolitiese ensieme, m.a.w. geen enkele ensiematiese stap het volledige beheer oor die fluksie van die glikolitiese padweg nie. Die afsonderlike analise en vergelyking van Plasmodium - en rooibloedselglikolise met behulp van differensiële metaboliese kontrole analise sal moontlik gebruik kan word om gasheervriendelike teikens vir nuwe middels aan te toon. So ’n analise benodig ’n omvattende kinetiese model van Plasmodium glikolise. Derhalwe was die doel van hierdie studie om vas te stel hoe uitvoerbaar dit is om ’n kinetiese model van Plasmodium glikolise te konstrueer en te valideer. Die uitvoerbaarheid van die konstruksie en validering van die kinetiese model was geasseseer op grond van die vermoë om: i) parasietkulture te kweek en genoegsame parasiete, wat in die aseksuele fase is, te isoleer sodat ensiembepalings en bestendige toestand-bepalings gedoen kan word, ii) kinetiese parameters soos Km - en Vmax-waardes vir elke glikolitiese ensiem, hetsy vanuit literatuur of eksperimentele werk, te verkry, iii) glikolitiese fluksie te meet, iv) glikolitiese intermediaatkonsentrasies te bepaal, v) ’n kinetiese model van die bepaalde kinetiese parameters op te stel en vi) die model te valideer met glikolitiese flukswaardes en metaboliet- konsentrasies wat in die bestendige toestand verkry is. Elk van die bogenoemde kriteria was met sukses in hierdie studie aangespreek. Ter opsomming, die eksperimenteel bepaalde kinetiese parameters en glikolietiese flukswaardes was gebruik om onderskeidelik ’n gedetaileerde kinetiese model te konstrueer en gedeeltelik te valideer. Daar was getoon dat verdere validering van die model deur middel van bestendige toestand metabolietkonsentrasies moontlik is met die ontwikkeling van ’n geskikte protokol om glikolitiese intermediaatkonsentrasies te meet. Die model, soos opgestel in hierdie studie, kan moontlik ’n belangrike rol speel om teikens vir nuwe malaria teen-middels te identifiseer en om gasheer-parasiet interaksies en glikolitiese regulering beter te verstaan.
Morales, Rivera Brenda Michelle. "Sexual and asexual propagation of red elm (Ulmus rubra), grey alder (Alnus incana), and buffaloberry (Shepherdia canadensis)." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/13737.
Full textDepartment of Horticulture, Forestry, and Recreation Resources
Charles Barden
Cheryl Boyer
Red elm (Ulmus rubra), grey alder (Alnus incana and A. incana spp. tenuifolia) and buffaloberry (Shepherdia canadensis) are considered important plants for many Native American tribes in the United States. Native Americans have used these three species for a variety of medicinal uses and ceremonial purposes. Currently, Kansas tribal leaders would like to plant more of these species on tribal land, but the plants have been difficult to propagate. While red elm is valued as a ceremonial tree, it is susceptible to Dutch Elm Disease caused by the fungus (Ophiostoma ulmi) and is not grown in many ornamental nurseries. This has led to declining tree populations. The objective of these studies were to evaluate methods to propagate red elm, grey alder and buffaloberry in order to find techniques that can lead to an increase in the production of these species commercially and enable tribes and landowners to increase the presence of these native plants on their lands. In the first study, the use of gibberellic acid (GA3) was investigated to determine the optimum concentration needed for maximum seed germination. Studies were conducted with stratified (cold, moist storage) and non-stratified red elm, grey alder, and buffaloberry seeds soaked in one of four treatments: 0, 250, 500 or 1000 ppm of GA3 in 2010, and 0, 500, 1000, 2000 ppm of GA3 in 2011. Results indicate the use of GA3 in high concentrations promoted germination of unstratified seeds of red elm, though low seed viability in grey alder and buffaloberry resulted in poor germination. In a second study, vegetative cuttings were treated with potassium indole-3-butyric acid (K-IBA) and Dip ‘N GrowTM containing indole-3-butyric acid and naphthalene acetic acid (IBA + NAA). Softwood cuttings for the three species were treated with K-IBA and Dip ‘N GrowTM (plant rooting hormones): K-IBA at 5,000 and 10,000 ppm and Dip ‘N GrowTM at 1:10 ratio solutions. Results of this study showed that only grey alder softwood cuttings had callus formation, root growth, and shoot growth while red elm and buffaloberry did not respond to cutting propagation treatments.
Bast, Jens [Verfasser], Marina [Akademischer Betreuer] Schäfer, Stefan [Akademischer Betreuer] Scheu, and Mark [Akademischer Betreuer] Maraun. "Transposable elements in sexual and asexual animals / Jens Bast. Gutachter: Stefan Scheu ; Mark Maraun. Betreuer: Marina Schäfer." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2015. http://d-nb.info/1065044747/34.
Full textBlouin, Nicolas Achille. "Asexual Reproduction in Porphyra umbilicalis (L.) Kützing and Assessment of its Use in Integrated Multi-trophic Aquaculture (IMTA)." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/BlouinNA2006.pdf.
Full text