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 9 of 9 for “"Soil Nematodes"”.
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Evolution of Pharyngeal Feeding Behaviors in Free-Living Soil Nematodes
The file named "ChiangJian-Tzyh.pdf" is the primary dissertation file. All other files ("*.mpg") are supplemental files and may be viewed individually.
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A comparison of community composition analyses for the assessment of responses to wood-ash soil amendment by free-living nematodes
… methods of community assessment for free-living soil nematodes under forest harvesting disturbance and wood ash application. Neither morphological assessment (richness, abundance, diversity) nor molecular assessment (morpho-richness using T-RFLP) was responsive to experimental treatments. …
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The role of terpenes as protectors of the potato crop
… infection by signalling its presence to nematodes. A heptacyclic triterpenoid, Solanoeclepin A, is released by potato roots into the soil. Nematodes sense this compound and infect the host. Possible solutions to mediate the problem require an understanding of the biosynthesis of …
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Protein glycosylation in the gram-negative gamma proteobacterium photorhabdus luminescens
… is a pathogen of insects and a symbiont of soil nematodes. Adhesion and invasion are very important in the life cycle of the organism and it is speculated that the bacteria may produce glycoproteins to facilitate infection of the host. Proteins from P. luminescens were analysed using lectins …
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Metatranscriptomic analysis of community structure and metabolism of the rhizosphere microbiome.
… interactions in the rhizosphere, the region of soil influenced by plant roots, are integral to biogeochemical cycling, and maintenance of plant health and productivity. Interactions between model plants and microbes are well understood, but relatively little is about the plant microbiome. Here, …
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Nematodes as indicators of sustainable soil health management practices in corn-soybean production
Soil nematodes are multicellular organisms causing significant economic and ecological impacts, and their community composition is widely used as a bioindicator of soil health. Current methodologies for nematode assessment require further refinement and advancement. This thesis addressed knowledge …
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Genetics and physiology of motility by Photorhabdus spp
<p>Photorhabdus is a bacterial symbiont of soil nematodes and a lethal pathogen of insects. Many pathogenic or symbiotic bacteria utilize various methods of motility to reach favorable conditions, colonize a host, or have motility genes that also regulate virulence expression. It is not known how …
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Distribution of nematodes in pasture soil across seasons and in combination with plant species and fertiliser application
… climatic characteristics can influence the soil biodiversity and soil functions in a pastoral system. Pasture soils have unique systems with different soil faunal and microbial communities, including soil-dwelling nematodes and plant species composition. Nematodes have the potential to be …
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Bases agronómicas para la utilización de restos agrarios en biodesinfección de suelos
… basis for the use of agrarian byproducts in soil biodesinfection" Agrarian systems are considered to be one of the main factors effecting the environment, due to the use of chemicals products used in the control of pests and diseases. Chemical soil fumigants such as methyl bromide (MB) should …