Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 65 for “"endophytes"”.
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Secondary Metabolites from Xylaria Endophytes: The isolation and structure elucidation of secondary metabolites from Xylaria endophytes by chemical and spectroscopic methods
… 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 …
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Discovery, Isolation, and Identification of Antimalarials from Fungal Endophytes
We examined fungal endophytes for their ability to inhibit bacterial, fungal and protozoal pathogens. Once antimalarial activity was discovered and confirmed, we sought to isolate and identify the active constituent(s) of our extracts. Bioassay-guided fractionation techniques were used to isolate …
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PHYTOPLASMAS-ENDOPHYTES INTERACTIONS: THE CASE STUDY OF GRAPEVINE YELLOWS RECOVERY
… 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. …
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Dominant foliar endophytes elicit growth in soybean under stressed conditions
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Endophytes as source of polypeptide and polyketide antibiotics fengycin and bacillaene
… eukaryotic organisms, antibiotics produced by endophytes may have reduced cell toxicity. Therefore, the antimicrobial compounds isolated from endophytes have a big potential for the pharmaceutical industry and agriculture. Potato plants were chosen as source of endophytes due to their ability …
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Aspects of the root ecology of Neotyphodium endophytes in Lolium perenne
Three different strains of the biotrophic endosymbiont, Neotyphodium, in perennial ryegrass were compared with endophyte-free ryegrass (Nil) for their effects on root herbivory, soil biota, root growth, root morphology and alkaloid and nutrient content in pot trials. Ryegrass infected with the …
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The Endophytes of Pediomelum Esculentum: A Unique Case in Legume Evolution
… have investigated the presence of diazotrophic endophytes in <em>P. esculentum</em>. Bacteria were isolated from wild plants on nitrogen free media, identified with their partial <em>16S rRNA</em> gene sequences, and screened for the presence of the nitrogen fixation gene <em>nifH</em>. Select …
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Analysis of the Potential for Diazotrophic Endophytes to Increase Efficiency of Bioenergy Crop Production: Growth promotion effects of the endophytes isolated from Populus trichocarpa and Salix sitchensis
<bold>Analysis of the Potential for Diazotrophic Endophytes to Increase Efficiency of Bioenergy Crop Production: Growth promotion effects of the endophytes isolated from Populus trichocarpa and Salix sitchensis</bold> Jenny L. Knoth Chair of the Supervisory Committee: Associate Professor, Dr. …
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Diversity and spatial distribution of fungal endophytes in a Eucalyptus grandis tree
… S. cordatum that grew in close proximity. The endophytes within the three E. grandis trees were hyper diverse. A total of 1 281 Molecular Operational Taxonomic Units (MOTU) was identified based on 454- pyrosequencing of the E. grandis fungal endophyte infections. Only 85 fungal endophytic …
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EXPLORING LYCOPODIACEAE ENDOPHYTES, DENDROLYCOPODIUM SYSTEMATICS, AND THE FUTURE OF FERN MODEL SYSTEMS
… of lycophytes by identifying the culturable endophytes of five Lycopodiaceae species. Microbial endophytes are integral factors in plant evolution, ecology, and physiology. However, the endophyte communities of all major groups of land plants have yet to be characterized. Secondly, I begin to …
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Isolation and characterisation of bioactive compounds from Vitex pinnata and associated fungal endophytes
… 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 …
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Effects of coastal dynamics on colonization of Louisiana wetland plants by fungal endophytes
… in southeast Louisiana. I explored two types of endophytes: root and foliar. Each of these groups is known to live within apparently healthy host plants without causing symptoms of disease; therefore, plants are thought to benefit from this association. Few studies, however, have shown that …
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Isolation, identification and characterization of Cleome Gynandra L. bacterial seed endophytes from Northern Namibia
… C. gynandra plant growth promoting (PGP) seed endophytes. The study aimed to isolate and identify endophytic bacteria associated with C. gynandra spermatophyte and characterize their functional plant growth promoting potential which could be used to improve plant growth and yield. Twenty …
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Structure Elucidation of Bioactive Compounds Isolated from Endophytes of Alstonia scholaris and Acmena graveolens
Alstonia scholaris is an evergreen tree native to Southeast Asia and Australia. It is commonly used as a medicinal plant throughout these regions. In the present study, an endophyte of the genus Xylaria was isolated from a stem of Alstonia scholaris, its mycelia and exudate extracted, and the …
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Utilizing Beneficial Bacterial Endophytes to Promote Switchgrass Growth in Low- input Agricultural Production Systems
… make the US more energy independent. Bacterial endophytes, which reside inside plant tissues, are proven to increase yield and stress resistance in a number of plants. The primary objective of this dissertation was to explore the use of endophytes to improve biomass yields of switchgrass on …
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Seed bacterization with plant growth-promoting endophytes: Impact on Okra productivity, nutraceuticals and antimicrobial properties
The growing challenges of population expansion, climate change, rising food costs, and unpredictable rainfall patterns have intensified the need for sustainable agricultural practices that boost crop productivity while minimising environmental impacts. One promising strategy involves the combined …
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A molecular characterization of the fungal endophytes within the needles of ponderosa pine (Pinus ponderosa)
<p>"Fungal endophytes (microbial fungi that live in plant tissues without causing disease) are ubiquitous in plants studied to date. Many conifers host endophytes that produce important bioactive secondary metabolites. While the endophytes in Pinus ponderosa roots have been studied, the endophyte …
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Isolating and Identifying Fungal Endophytes from Roots of Rare Orchid Cypripedium arietinum in Grand Sable Dunes, Michigan
… research on this species’ root associated fungal endophytes. This new population estimate allows the ethical, destructive sampling required to shed light on root associated symbionts and further successful preservation and restoration of the species. Samples were collected of current year’s roots …
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An investigation into the anthelmintic properties of seed extracts from endophyte containing pasture grasses
… properties of extracts from seeds containing the endophytes AR1, AR37, wild type in perennial rye grass (RG), and the loline producing endophytes namely Meadow Fescue (MF and U2) and Tall Fescue (TF and AR542) with Nil endophytes rye grass (Nil RG) and Nil endophytes tall fescue (Nil TF) used as …
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The Evaluation of the Endophytic Mycobiome of Magnolia grandiflora
… occupying internal tissues of plants are called endophytes. Fungal endophytes are of major importance because they exist in the healthy tissues of all terrestrial plants and have in some cases been shown to contribute to the health of their plant hosts. They are also important because some fungi …
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