نتایج جستجو برای: cereal cyst nematodes
تعداد نتایج: 55546 فیلتر نتایج به سال:
Wheat (Triticum aestivum L.) is extremely affected by several abiotic and biotic stresses. Drought and/or heat alongside the parasitism of cereal cyst nematodes Heterodera genera can have a combined destructive impact on wheat. Solely, nematode species filipjevi cause wheat yield losses up to 50%. Several control measures been implemented, yet, most economical convenient strategy use resistant ...
Root-knot nematodes and cyst nematodes are obligate, biotrophic pathogens of numerous plant species. These organisms cause dramatic changes in the morphology and physiology of their hosts. The molecular characterization of induced plant genes has provided insight into the plant processes that are usurped by nematodes as they establish their specialized feeding cells. Recently, several gene prod...
Tobacco, eastern black nightshade, and tomato were grown for 3 to 13 weeks to assess differences in invasion, development, and soil density of Globodera tabacum tabacum (tobacco cyst nematode) in field plots and microplots over three seasons. Tobacco cyst nematodes invaded roots of resistant and susceptible tobacco, nightshade, and tomato. Nematode development was fastest in nightshade and slow...
In order to complete its life cycle, a cyst nematode must stimulate the production of a specialized syncytial feeding site within host root tissues. This process is characterized by major changes in local root morphology, including enlargement of affected nuclei and nucleoli, cell wall degradation, and proliferation of subcellular organelles. At the molecular level very little is known about th...
Sedentary plant-parasitic cyst nematodes are biotrophs that cause significant losses in agriculture. Parasitism is based on modifications of host root cells that lead to the formation of a hypermetabolic feeding site (a syncytium) from which nematodes withdraw nutrients. The host cell cycle is activated in an initial cell selected by the nematode for feeding, followed by activation of neighbori...
The effects of cover crops on the biology soybean cyst nematode (SCN; Heterodera glycines) are not well established. It is possible that may reduce SCN population densities by acting as trap crops. Cover with potential to serve stimulate hatching and/or attract hatched juveniles and also be penetrated large numbers nematodes cannot feed. Experiments were conducted determine whether root exudate...
Nematodes comprise a large phylum of animals that includes plant and animal parasites as well as many free-living species (Maggenti, 1981). Plant parasitic nematodes are obligate parasites, obtaining nutrition only from the cytoplasm of living plant cells. These tiny roundworms (generally 4 mm long and barely visible to the human eye) damage food and fiber crops throughout the world and cause b...
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