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Showing 1 to 20 of 22 for “"plant-parasitic nematodes"”.
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Developing a genetic toolkit for plant-parasitic nematodes
Nematodes belong to one of the most diverse phyla on the planet. Most nematodes are free living and feed on bacteria, fungi, and protozoa. Plant-parasitic lifestyles are relatively rare in terms of numbers, however, through their parasitism these nematodes have a substantial impact on agriculture. …
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Investigating the role of neuropeptides in plant parasitic nematodes
Plant parasitic nematodes (PPNs) devastate agriculture on a global scale causing severe annual economic losses. Withdrawal of the chemical nematicides used to control PPNs, due to their harmful environmental effects, has led to a short fall in<br/>our ability to manage these pests. This thesis …
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The development of gene silencing strategies for plant parasitic nematodes
… (RNAi) mechanism in two economically important plant parasitic nematodes (PRNs), the potato cyst nematode Globodera pallida and the root knot nematode Meloidogyne incognita. Much of the work contributing to this project has advanced our understanding of RNAi in these nematodes, and may also have …
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The nervous system of plant-parasitic nematodes and their behaviors
Nematodes are the most abundant animals on earth. The majority of nematodes are free-living which feed on bacteria and fungi in the soil. However, some nematodes are parasitic to other animals and plants and have a huge impact on human health and agriculture worldwide. The nervous system of the …
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Plant-parasitic nematodes: from genomics to functional analysis of parasitism genes
Nematodes (roundworms) belong to the largest phylum on earth. The numerous species inhabit practically all ecological niches, including plants. Plant-parasitic species live on plant roots, causing substantial damage to the plant and hampering its development. As such, they cause gigantic economical …
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Developmental biology of heterodera glycines (soybean cyst nematode) and other plant - parasitic nematodes
Nematodes are unsegmented round worms with a pseudocoelomate body cavity. Nematodes are omnipresent in nature. Most are free-living, living as bacterial or fungal feeders, while many nematodes species are parasitic to animals or plants and have a huge impact on human health and agriculture …
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The Ecology and Distribution of Plant-Parasitic Nematodes on Three Farms in Southern Illinois
Made available in DSpace on 2014-12-10T23:41:26Z (GMT). No. of bitstreams: 1 7207051.pdf: 2816298 bytes, checksum: 49768475d510a2081fcb348736045820 (MD5) Previous issue date: 1971
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Molecular analysis of migratory plant-parasitic nematodes with a focus on plant cell wall modifying enzymes
Plant-parasitic nematodes cause a considerable amount of crop damage worldwide. These nematodes all have a stylet to damage plant cells mechanically, but through which they also secrete proteins important for their infection process. Most studies on genes encoding these so-called parasitism …
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Management strategies for control of soybean cyst nematode and their effect on the nematode community
… yield-limiting pathogen on soybean and various plant-parasitic nematodes can damage corn. Additionally, the nematode community is a useful bioindicator for soil health. In chapter 1, relevant research is reviewed. Chapter 2 describes experiments testing ten organic soil amendments at various …
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Molecular characterization of CLE peptide mimicry during cyst nematode pathogenesis
… OF MISSOURI-COLUMBIA AT AUTHOR'S REQUEST.] Plant-parasitic cyst nematodes establish intimate parasitic relationships with their hosts by penetrating the root as motile juveniles and migrating intracellularly until they reach the root vasculature where they select a single cell to initiate a …
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Diversity and relationships of South Africa's fig-associated nematodes
Parasitic nematodes of the fig microcosm have received limited attention in South Africa. I have assessed the molecular diversity of nematodes present in the native South African species and discovered 24 undescribed species. Two were previously described but the descriptions need reviewing. I have …
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Acción nematicida (Globodera rostochiensis) y metabólica del suelo, en procesos de biodesinfección, mediante la aplicación de enmiendas de origen animal, vegetal y antrópico
… novedosa, muy sensible. Esta tesis doctoral se plantea, en primer lugar, conocer los componentes enzimáticos relacionados con la acción nematicida sobre G.rostochiensis y, en segundo lugar averiguar, si es posible, en qué ámbito enzimático/físico-químico del suelo se integra y a quién se puede …
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Novel Approaches for Anthelmintic and Nematicide Discovery
Parasitic nematodes place an enormous burden on humanity. Nematodes infect over one quarter of the world’s population and cause billions of dollars in livestock and plant crop losses each year, threatening global food security. We rely heavily on the use of anthelmintic medicines and agrochemical …
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Biodiversity of phytoparasitic nematodes associated with Musaceae and fruit crops in Colombia
Wide distributions of economically important plant-parasitic nematodes belonging to the genera Meloidogyne, Pratylenchus and Radopholus have been recorded in plantain and fruit crops in Colombia. Despite of significant economic losses, taxonomic research on these taxa in Colombia is limited. This …
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The ecological impacts of a novel nematode control agent
Plant-parasitic nematodes are prevalent in many soils and impose an economic burden worldwide on agriculture, through yield reductions and cost of control. There is a prominent need for the development and implementation of sustainable control mechanisms, to reduce the widespread use of hazardous …
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An investigation into the potential of crude and partially separated material of selected non–crop plant species as control agents of root–knot nematodes (Meloidogyne incognita) in tomato
Plant-parasitic nematodes (PPN) are a serious problem in vegetable production and can cause severe damage to several crops. In rural, low-input farming nematode damage is much higher and yields can be completely destroyed. Some Commercial nematicides have been withdrawn from the market due to …
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The etiology of root rot and decline of English boxwood (Buxus sempervirens cv. suffruticosa L.)
… of organisms associated with declining plants, investigation of host-parasite relationships and determination of the environmental aspects of the decline were investigated under laboratory, greenhouse, and field conditions. English boxwood decline is increasing in northern Virginia and …
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Evaluation of rotation varieties strategies to control reniform nematode in cotton (Gossypium hirsutum L.)
… in Texas. Two common practices for managing nematodes are crop rotation and the use of nematode-resistant varieties. Although there are many reports of the benefits of rotating cotton with non-host crops such as corn (Zea mays), sorghum (Sorghum spp.), peanuts (Arachis hypogaea), there are …
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An agent-based model to simulate virus-based biocontrol for the soybean cyst nematode, Heterodera glycines
Plant parasitic nematodes are responsible for food losses worth 78 billion dollars worldwide. The damage caused by Heterodera glycines, or soybean cyst nematode (SCN), to the US soybean crop is estimated up to 2 billion dollars annually making it the most destructive soybean pathogen. SCN is a …
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