Relevant bibliographies by topics / Endophytes / Dissertations / Theses
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Dissertations / Theses on the topic 'Endophytes'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Xin, Gang. "Diazotrophic endophytes of Populus /." Thesis, Connect to this title online; UW restricted, 2008. http://hdl.handle.net/1773/10104.

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2

Pincebourde, Sylvain. "Biophysique environnementale des insectes endophytes." Phd thesis, Université François Rabelais - Tours, 2005. http://tel.archives-ouvertes.fr/tel-00108243.

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La physiologie et les traits d'histoire de vie des organismes ectothermes dépendent largement de la température de leur microclimat. Dans certaines relations insecte – plante, le phytophage manipule physiquement et/ou chimiquement son environnement végétal. Cependant, les effets de ces transformations sur le microclimat de l'herbivore sont encore inconnus. Nous avons détaillé précisément les modifications physiques induites par un lépidoptère mineur de feuille (Phyllonorycter blancardella, Gracillariidae) sur son environnement végétal (le pommier). Les impacts sur l'écologie thermique de la la
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3

Vandegrift, Andrew. "Ecological Roles of Fungal Endophytes." Thesis, University of Oregon, 2016. http://hdl.handle.net/1794/20401.

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Endophytic fungi live within tissues of plant hosts without causing symptoms of disease. These fungi are broadly split into the taxonomically and ecologically cohesive Clavicipitaceous endophytes, which infect grasses, and the taxonomically diverse non-Clavicipitaceous endophytes, which are found in nearly all plants and have diverse ecological strategies. My dissertation has two sections: Section A investigates the intersection of Clavicipitaceous endophyte ecology with other ecological theory, including invasion ecology (Chapter II) and community ecology and climate change (Chapter III); Sec
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4

Beau, Jeremy. "Drug Discovery from Floridian Mangrove Endophytes." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4287.

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A significant challenge of the 21st century is the growing health threat stemming from drug-resistant infectious diseases. There is an undeniable need to discover new, safe and effective drugs with novel mechanisms of action to combat this threat. A study of drugs currently on the market showed that natural products account for approximately 75% of new anti-infective drugs, either as new agents or analogs based upon their structure. Unfortunately, major pharmaceutical companies have cut back tremendously in natural products research in part due to the frustrating obstacle of frequent rediscove
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5

Arnold, Anne Elizabeth. "Neotropical fungal endophytes: Diversity and ecology." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/289841.

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Fungal endophytes associated with leaves of woody plants are thought to be diverse and abundant, especially in tropical forests. However, associations of endophytes with tropical woody angiosperms have not been characterized in detail. In this dissertation, I assess: (1) the scale of endophyte biodiversity in a tropical forest; (2) ecological, temporal, and host-mediated factors influencing endophyte abundance in leaves of tropical trees; (3) utility of endophyte morphospecies as functional taxonomic units; and (4) the nature of endophyte-host interactions. To characterize endophyte biodiversi
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6

Wilson, Wendolyn Louise. "Isolation of endophytes from seagrasses from Bermuda." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35540.pdf.

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7

Gunson, Helen Elizabeth. "Endophytes and microbial contaminents of micropropagated plants." Thesis, University of the West of England, Bristol, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315314.

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8

Poinso, Alix. "Recherche d'inhibiteurs de la superoxyde dismutase à partir de substances naturelles." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30378/document.

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Le but de ce travail de thèse était de rechercher de nouvelles molécules inhibitrices de la SOD dans des extraits de substances naturelles. Cette enzyme majeure du stress oxydant étant impliquée dans de nombreux mécanismes de défense des cellules cancéreuses contre l'apoptose représente une voie thérapeutique d'avenir. Nous en avons recherché dans les champignons endophytes de plantes péruviennes, ces micro-organismes produisant de nombreux métabolites de défense des plantes hôtes. Ce travail de thèse a d'abord porté sur l'isolement, la culture, l'identification, l'extraction et la caractérisa
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9

Reivant, Munters Arielle. "The foliar bacterial endophyte community in native Pinus radiata: a role for protection against fungal disease?" Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-234871.

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Pinus radiata is the most planted tree in the southern hemisphere. The planted trees are especially susceptible to pathogens, but even the native population, nowadays limited tomerely five locations, are threatened by diseases caused by arthropods, fungi and dehydration. Endophytes are bacteria or fungi that reside inside healthy plant tissue, and often have a beneficial effect on their hosts. Endophytes can help plants adapt to abiotic stress such as drought and protect them against pathogens and insect pests. Given the roles that endophytes play in host stress responses, it is possible that
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10

MICELI, Elisangela. "Bacterial Endophytes: Unexplored Sources Of Biotechnologically Relevant Molecules." Doctoral thesis, Università degli studi di Ferrara, 2019. http://hdl.handle.net/11392/2488023.

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Endophytes are microorganisms which colonize the internal tissues of the plants without causing any harm. Generally, endophytes are described as presenting beneficial functions to the plant host, such as plant growth promoting activity and protection against pathogens. The interaction between endophytes and plants is so close, that the term holobiont has been proposed to define the plant and its microbiome, as if they formed a unique organism. In the last decades, endophytes have gained more attention since there is growing evidence of their capacity to influence the plant’s physiology and to
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11

Finyom, Cyprien William Bopda. "Characterisation of the endophytic bacterial communities associated with South African sorghum plants: looking for potential plant growth-promoting endophytes." Thesis, University of Western Cape, 2012. http://hdl.handle.net/11394/3431.

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>Magister Scientiae - MSc<br>The term endophyte is used to define all microorganisms that, during a part of their life cycle, colonize the internal tissues of a plant host. Many endophytes have been found to promote plant growth by acting either as biocontrol agents, biofertilizers or phytohormone producers. This study aimed to characterise the endophytic microbial community diversity associated with sorghum farmed in South Africa. Members of any common endophytic bacterial species identified during the study might in future studies be developed to improve sorghum production. Sorghum tissues (
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12

Al-Busaidi, Harith N. K. "Secondary metabolites from Xylaria endophytes : the isolation and structure elucidation of secondary metabolites from Xylaria endophytes by chemical and spectroscopic methods." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5266.

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13

Al-Busaidi, Harith. "Secondary Metabolites from Xylaria Endophytes: The isolation and structure elucidation of secondary metabolites from Xylaria endophytes by chemical and spectroscopic methods." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/17479.

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This thesis describes the isolation and structure elucidation of secondary metabolites from a number of endophytic Xylaria fungi. Six Xylaria endophytes were surface cultured on an aqueous malt extract-glucose medium. The fungus A311R, from a palm tree in Thailand, produced nonane-1,2,3-tricarboxylic acid, which was isolated for the first time as a natural product. Also isolated from the same fungus was spiculisporic acid; the first instance of isolation from a Xylaria fungus. The fungus 6RD12 produced cycloepoxydon, which was isolated for the first time from a Xylaria fungus, and 4,5,6-trihyd
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14

Hirst, Jevon Edward. "The ecology and physiology of endophytes of angiosperm stems." Thesis, Cardiff University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265814.

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15

Wright, Jacqueline Gilda. "The role of endophytes in citrus stem end rots." Thesis, Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19736654.

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16

Zhang, Dong-Xiu. "Loline alkaloid biosynthesis gene expression in epichloë endophytes of grasses." Lexington, Ky. : [University of Kentucky Libraries], 2008. http://hdl.handle.net/10225/785.

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Thesis (Ph. D.)--University of Kentucky, 2008.<br>Title from document title page (viewed on May 12, 2008). Document formatted into pages; contains: xvi, 221 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 214-219).
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17

Gordien, Andrâea Y. "Phytochemical and antimicrobial studies of Scottish plants and fungal endophytes." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=14347.

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18

ZHANG, DONG-XIU. "LOLINE ALKALOID BIOSYNTHESIS GENE EXPRESSION IN EPICHLOE ENDOPHYTES OF GRASSES." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_diss/592.

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Loline alkaloids (LA) are secondary metabolites produced by Epichloandamp;euml; (anamorph, Neotyphodium) grass endophytes. They are toxic and deterrent to a broad range of herbivorous insects but not to livestock. This protective bioactivity has spurred considerable research into the LA biosynthetic pathway. LOL, the gene cluster containing nine genes, is required for LA biosynthesis. The regulation of LOL genes during LA production in culture and in symbio is of interest. In this study, coordinate regulation between LOL gene expression and LA production level was investigated in both MM cultu
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19

Eastwood, Daniel Christopher. "Physiology of Acremonium endophytes and their interaction with Pooideae grasses." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243230.

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20

Rinkel, Barbara Elizabeth. "A molecular and morphological taxonomy of epi-/endophytes (Ulvophyceae, Chlorophyta)." Thesis, University of Bristol, 2007. http://hdl.handle.net/1983/e737a534-1eed-4d51-a7f7-954abcaeada8.

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21

CHAINTREUIL, DONGMO CLEMENCE. "Caracterisation des bradyrhizobium photosynthetiques endophytes du riz sauvage oryza breviligulata." Montpellier, ENSA, 2000. http://www.theses.fr/2000ENSA0023.

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Nous avons montre pour la premiere fois que des rhizobiums, bacteries qui forment habituellement des nodules fixateurs d'azote sur les racines des plantes de la famille des legumineuses etaient egalement des bacteries endophytes associees aux racines du riz sauvage oryza breviligulata. Cette espece pousse dans les mares temporaires d'afrique de l'ouest du senegal a la guinee et est consideree comme l'ancetre du riz africain cultive o. Glaberrima. En utilisant des methodes de caracterisation moleculaire, ces rhizobiums endophytes du riz ont ete identifies comme des bradyrhizobium photosynthetiq
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22

Bernard, Miriam. "Molecular interactions between the kelp saccharina latissima and algal endophytes." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS105.

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Des algues brunes endophytes envahissent les tissus des laminariales, avec des effets potentiellement négatifs sur leur hôte. Des études moléculaires ont permis d'identifier deux genres, Laminarionema et Laminariocolax, dominant la diversité de ces endophytes. Une étude épidémiologique par qPCR a montré une forte prévalence de l'endophyte Laminarionema elsbetiae chez Saccharina latissima, avec des variations saisonnières et locales. En laboratoire, la présence de L. elsbetiae induit des réponses physiologiques différentes chez S. latissima, son hôte principal, et chez Laminaria digitata, un hô
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23

Bulgari, D. "PHYTOPLASMAS-ENDOPHYTES INTERACTIONS: THE CASE STUDY OF GRAPEVINE YELLOWS RECOVERY." Doctoral thesis, Università degli Studi di Milano, 2010. http://hdl.handle.net/2434/150211.

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This PhD project aims to study the interactions between endophytic bacteria and phytoplasmas associated with grapevines to clarify the role of endophytic bacteria in grapevine yellows (GY) recovery and discuss the possibility to apply these bacteria for GY management. Diversity of bacterial endophytes associated with grapevine leaf tissues was analyzed by cultivation and cultivation-independent methods. To identify bacterial endophytes directly from metagenome, a protocol for bacteria enrichment and DNA extraction was optimized. Library analysis of a PCR-amplified 16S rDNA fragment showed best
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24

Hundley, Nicholas James. "Structure Elucidation of Bioactive Compounds Isolated from Endophytes of Alstonia scholaris and Acmena graveolens." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1013.pdf.

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25

King, Eoghan. "Caractérisation phénotypique et moléculaire de la réponse du riz au cours de l’interaction avec des espèces de Burkholderia s.l." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTG079.

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Dans les conditions naturelles, les plantes interagissent avec une grande diversité de microorganismes, entretenant avec elles des types d’interactions variées allant du mutualisme à la pathogénie. Quelque soit le type d’interaction mis en place, les plantes sont capables de reconnaitre des motifs moléculaires microbiens conservés qui induisent l’activation d’une réponse immunitaire dite « non-hôte ». Cette réponse immunitaire basale a largement été étudiée dans le cas des interactions avec des microorganismes mutualistes et pathogènes. Cependant, dans le cas des « symbioses associatives » ave
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26

Wu, Ruomou. "Identification of candidate plant growth promoting endophytes from Echium plantagineum roots." University of the Western Cape, 2018. http://hdl.handle.net/11394/6288.

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Magister Scientiae - MSc (Biotechnology)<br>The yearly increase of global population will result in a greater demand for crop production, but with the climates changes and a lack of available agricultural land it will become increasingly more difficult to provide sufficient crops to feed everyone adequately. Application of the PGPE has proven over the past researches to be able enhance growth of plants via various growth promoting mechanisms. To identify suitable growth promoting bacteria candidate, E. plantagineum plant was used to isolate endophytes from the root after surface steriliz
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27

Meirelles, Casella Thiago. "Composés antimicrobiens ou cytotoxiques à partir de micro-organismes endophytes foliaires." Thesis, Antilles-Guyane, 2014. http://www.theses.fr/2014AGUY0836/document.

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En raison de la nature symbiotique des micro-organismes endophytes, cette étude visait à étudier l'activité antibactérienne, antifongique et cytotoxique chez les métabolites secondaires des extraits endophytes foliaires de plantes de l'Amazonie brésilienne et du Cerrado. Dans ce travail de thèse 147 micro-organismes cultivables ont été isolés (130 champignons, 3 bactéries e 14 champignons non-identifiés ou inconnus) à partir de 28 plantes (4 espèces collectées au Brésil et 24 en Guyane Française). Tous les micro-organismes furent identifiés par analyse moléculaire des régions spécifiques de l'
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28

Deutscher, Tyrel Ryan. "The endophytes of Pediomelum esculentum| A unique case in legume evolution." Thesis, South Dakota State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10164128.

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<p><i>Pediomelum esculentum</i> (commonly prairie turnip) is a perennial legume of the Great Plains, consisting of a deep taproot and large edible tuber, and has served as a nutritious staple in Native American diets. The tuber is capable of storing up to 20 percent protein by weight. <i> P. esculentum</i> is a legume, but not a prominent nodule former; instead, it grows in nitrogen-limited soils and produces large amounts of protein. This suggests the involvement of biological nitrogen fixation. We have investigated the presence of diazotrophic endophytes in <i>P. esculentum</i>. Bacteria wer
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Pérez, Hemphill Catalina Francis [Verfasser]. "Bioactive fungal natural products from extremophilic endophytes / Catalina Francis Pérez Hemphill." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2017. http://d-nb.info/1125595418/34.

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30

Bailes, Graham. "Drivers of endophyte communities in Pacific Northwest prairies." Thesis, University of Oregon, 2017. http://hdl.handle.net/1794/22783.

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Prairies of the Pacific Northwest are threatened systems, with only ~2% of historic land remaining. The combined risk of global climate change and land use change make these systems a high conservation priority. However, little attention has been paid to the microbiota. Fungal endophytes are ubiquitous in plants and are important in ecosystem functioning and host dynamics. To understand fungal community assembly, we used high-throughput sequencing to investigate the composition of fungal foliar endophyte communities in two native, cool-season (C3) bunchgrasses along a natural latitudinal g
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Mattila, née Pirttilä A. M. (Anna Maria). "Endophytes in the buds of Scots pine (Pinus sylvestris L.)." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514264444.

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Abstract Although microbes are generally found as endophytes in many plant tissues, the plant shoot meristems have been considered virtually sterile. Plant tissue culture, which utilizes mostly the meristems, has nevertheless given numerous references to microbial existence in these tissues. Since the bud-derived tissue cultures of Scots pine (Pinus sylvestris L.) also become easily occupied by microbes, microbial presence was considered to be one potential cause of the low regeneration capacity of tissues from mature trees. The origin of the microbes occurring in tissue cultures of bud
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32

Gillanders, Timothy James. "The development of new inoculation techniques and viability tests for Neotyphodium endophytes." Thesis, University of Canterbury. Biological Sciences, 2007. http://hdl.handle.net/10092/3677.

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Neotyphodium endophytes (Claviceptaceae) are asexual filamentous fungi found living between the cells of many cool season forage grasses including tall fescue, meadow fescue and perennial ryegrass. They produce a range of alkaloids, including ergovaline and lolitrem B, which have been shown to be directly associated with the livestock disorders fescue toxicosis and ryegrass staggers syndrome, while others, including peramine and the lolines, have been linked to increased insect and drought resistance of the grass host. In the past decade, the Neotyphodium strains AR1, MaxQ and MaxP were select
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Gagné-Bourque, François. "The isolation, identification and characterization of endophytes of the bioenergy crop switchgrass." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106473.

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It has been established that perennial grasses harbour different types of endophytic bacteria and fungi. Switchgrass (Panicum vergatum L.) is identified as a model perennial energy crop. This study was conducted to explore fungal and bacterial endophyte communities inhabiting switchgrass cultivars of Quebec. The primary focus of this study was to isolate the endophytes, and provide taxonomic identifications based on comparative analysis of ITS rDNA gene sequences. A total of 145 endophytes isolates were recovered (52 bacteria and 93 fungi) from whole plant samples collected at early vegetative
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Florea, Simona. "TOWARDS ELIMINATION AND GENETIC MANIPULATION OF ERGOT ALKALOID PRODUCTION IN FUNGAL ENDOPHYTES." UKnowledge, 2009. http://uknowledge.uky.edu/gradschool_diss/803.

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Clavicipitaceous fungal endophytes provide several ecological benefits to their hosts. Besides improving host’s growth characteristics, Neotyphodium coenophialum, the endophyte of tall fescue (Lolium arundinaceum), produces ergot alkaloids that have been proposed to be involved in fescue toxicosis. One approach to address the toxicosis problem is to genetically manipulate and modify N. coenophialum by knocking out a pair of homologous genes, (dmaW1 and dmaW2), encoding dimethylallyltryptophan synthase, the enzyme for the first and determinant step in ergot-alkaloid biosynthesis. In this study,
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Upson, Rebecca. "The status of dark septate root fungal endophytes in Antarctic plant communities." Thesis, University of Sheffield, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434597.

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36

RAVEL, CATHERINE. "Les champignons endophytes des graminees : distribution et coevolution avec leurs especes hotes." Clermont-Ferrand 2, 1997. http://www.theses.fr/1997CLF21937.

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Les graminees abritent souvent des champignons endophytes symbiotiques. La premiere partie de cette etude a ete consacree aux e-endophytes (proches des epichloe) du ray grass anglais (lolium perenne). 70% des populations naturelles de ray grass anglais sont porteuses de ces endophyte. La frequence de l'infection intra-population est generalement faible. Ce resultat surprenant a pu etre explique par un modele mutation (perte de l'endophyte) - selection conduisant a un etat d'equilibre polymorphe. De plus, nos resultats montrent que l'infection a une structure spatiale expliquee par une selectio
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NAFFAA, WALID. "Les champignons endophytes des graminees : variabilite et co-adaptation avec leurs-hotes." Clermont-Ferrand 2, 1998. http://www.theses.fr/1998CLF21999.

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Les graminees de la sous-famille des festucoidees hebergent frequemment des champignons symbiotiques appartenant au genre neotyphodium (acremonium section albo-lanosa). Ces endophytes sont rencontres soit dans les parties vegetatives aeriennes (gaines, feuilles et tiges) soit dans les graines. Des endophytes ont ete isoles, aussi bien a partir des gaines foliaires et des tiges qu'a partir des graines, de 26 especes differentes de graminees. Les etudes morphologiques, physiologiques et isoenzymatiques effectuees sur ces isolats ont montre l'existence de trois groupes d'endophytes chez les grami
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Han, Jianying. "Exploring the Potential of Endophytes and Fungi as Sources of Antimicrobial Compounds." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/404851.

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Microbes are leading producers of numerous active natural products, many of which have been developed as antibiotics, anticancer agents, and immunosuppressants. The importance and significance of microbial natural products was recognized by the Nobel Prizes in Physiology or Medicine awarded for discovery of penicillin, streptomycin, and avermectin in 1945, 1952 and 2015, respectively. The high occurrence of drug resistance and the high rate of re-isolation represent new challenges. In order to respond to the current challenges and meet the urgently clinical need, new approaches are required to
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Pillay, Kerry-Anne. "Diversity and spatial distribution of fungal endophytes in a Eucalyptus grandis tree." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/31514.

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Endophytic fungi of most woody trees are poorly studied due to their cryptic existence, the complexity of the community and the poor ability of traditional tools to characterize them. This study characterised the endophytic community present in commercially important Eucalyptus grandis trees in South Africa. Two different experimental approaches were used. Firstly environmental bar-coding, or metagenetics, was done using 454-pyrosequencing parallel sequencing of the barcode amplicons of all the fungal isolates present in the plants from the total DNA of the plant. Secondly, conventional
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Moloinyane, Siphokazi. "Bioefficacy of selected entomopathogenic fungal endophytes (Ascomycota) against grapevine mealybug (Planococcus ficus)." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2858.

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Thesis (MTech (Horticulture))--Cape Peninsula University of Technology, 2018.<br>Global demand for environmentally-friendly grapevine cultivation and pest control has necessitated an improved understanding of the relationship between soil properties and beneficial naturally occurring antagonists like entomopathogenic fungi (EPF). This group of fungi presents a viable alternative for the control of destructive pests such as the grapevine mealybug. Sixty-six soil samples were collected from 22 vineyards in the Western Cape, South Africa. The association between soil nutrient status and EPF preva
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Munakata, Yuka. "Study of interactions of plants and endophytic microorganisms for characterizing active molecules for biocontrol and pharmaceutical applications." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0317.

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Depuis le milieu du XXième siècle, le recours à la chimie de synthèse a permis de disposer d’un ensemble de solutions efficaces pour améliorer la santé des plantes (produits phytosanitaires) et la santé humaine (médicaments). Cependant, l’utilisation généralisée de certaines de ces solutions (produits phytosanitaires et antibiotiques), a eu des effets non intentionnels sur l’environnement et a conduit à la sélection de populations d’agents pathogènes résistants. Ces effets mettent en péril le recours à ces solutions pour maitriser les agents pathogènes des plantes et de l’homme. Il est donc de
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BRANNOCK, JILL MARIE. "CHARACTERIZATION OF ROOT ENDOPHYTIC BACTERIA." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1100806990.

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43

Murúa, Pedro. "Molecular and cell biology of novel brown algal pathosystems." Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=238693.

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Algae are increasingly being used in human affairs. Alongside with higher volumes, threats for seaweed natural reservoirs and seaweed farming are starting to appear. Epidemics seems a key complication, similar to agriculture and animal aquaculture. However, phycopathologies are much more under documented, and future diseases are currently difficult to foresee. Thus, efforts should be stressed on biodiversity of algal pathogens and algal defense strategies against diseases. This thesis is divided in two parts: the first section comprises Chapters Two and Three, which describe novel algal pathos
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McAlpine, Jesse. "The Role of Yeasts in the Pollination Success of a Neotropical Orchid." Thesis, University of Oregon, 2013. http://hdl.handle.net/1794/13280.

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The Neotropical cloud forest inhabiting orchid Dracula felix has long been postulated to be a fungal mimic due to the form of its lower labellum and attraction to it by drosophilid flies that are often found feeding on fungal fruiting bodies in the surrounding area. The low number of co-occurring flowers in the area combined with the high number of fruiting fungi appears to have driven the evolution of the orchid genus Dracula to mimic these co-occurring fungi so that pollinators may be recruited. Over several years of working with these orchids we have noticed a particular lapping behavior by
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45

Barthélémy, Morgane. "Etude de la diversité chimique et biologique d’endophytes de palmiers." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS563.

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Dans cette étude, le palmier Astrocaryum sciophilum a été choisi comme modèle pour l'étude de ses endophytes foliaires. Du fait de sa longévité, nous avons cherché à mettre en évidence une communauté compétitive d’endophytes en fonction de l’âge de ses feuilles. Afin d’évaluer si les métabolites produits par ces endophytes pourraient être utilisés en santé humaine, les extraits de chaque endophyte ont été testés contre Staphylococcus aureus résistant à la méticilline (SARM) ainsi que pour leur activité quorum quenching (QQ). En parallèle, afin d’identifier un rôle écologique de protection de l
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46

Khiralla, Afra. "Études phytochimique, cytotoxique et antibactérienne de champignons endophytes issus de plantes médicinales du Soudan." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0159/document.

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Pour la première fois, l’étude de la flore fongique endophytique de cinq plantes médicinales soudanaises : Calotropis procera (Ait.), Catharanthus roseus (L.), Euphorbia prostrata (Ait.), Trigonella foenum-graecum (L.), and Vernonia amygdalina (Del.) a été réalisée. Un total de 23 souches de champignons endophytes ont été isolées à partir des plantes après la stérilisation de surface puis les différentes analyses biologiques ont été effectuées. Les extraits bruts d’acétate d’éthyle de 21 endophytes ainsi que de leurs plantes hôtes ont été évalués pour leur teneur en phénols totaux et leur acti
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Muvea, Alexander Mutua [Verfasser]. "The effect of fungal endophytes on thrips and tospovirus epidemiology / Alexander Mutua Muvea." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2015. http://d-nb.info/1074259831/34.

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Pham, Ngoc Tuan [Verfasser]. "Micropropagation and identification of bacterial endophytes in interspecific hybrid walnuts / Ngoc Tuan Pham." Hannover : Technische Informationsbibliothek (TIB), 2017. http://d-nb.info/1149830557/34.

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Kamal, Nurkhalida. "Isolation and characterisation of bioactive compounds from Vitex pinnata and associated fungal endophytes." Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25909.

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Drug discovery from natural sources including plants, marine organisms and endophytes is still pivotal in pharmaceutical research due to their ability of producing diverse and unique secondary metabolites. Discovery of secondary metabolites from leaves of Vitex pinnata, a medicinal plant from Malaysia and its associated endophytic fungi, Lasiodiplodia theobromae, Nigrospora sp and Pestalotiopsis olivacea afforded nineteen compounds and several of these compounds exhibited good anticancer, antitrypanosomal and anti-mycobacterial activities. Secondary metabolites isolated from leaves of V. pinna
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Del, Olmo Ruiz Mariana. "Diversity, Distributions, and Host Affiliations of Fungal Endophytes Associated with Seedless Vascular Plants." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/243097.

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In this dissertation, I explore the diversity of endophytic fungi associated with above-ground tissues of neotropical ferns, assess factors shaping their community structure in three forests, and explore the contributions of endophytes and related strains to our understanding of the diversity and ecology of a representative genus of Ascomycota. In Appendix A, I report a survey of endophytic fungi from seven species of ferns at La Selva, Costa Rica. Using both species-level and phylogenetic analyses, I compare culturable endophytes as a function of fern taxonomy, frond tissues (blades vs. stalk
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