نتایج جستجو برای: pythium ultimum
تعداد نتایج: 1595 فیلتر نتایج به سال:
To help learn how phytopathogens feed from their hosts, genes for nutrient transporters from the hemibiotrophic potato and tomato pest Phytophthora infestans were annotated. This identified 453 genes from 19 families. Comparisons with a necrotrophic oomycete, Pythium ultimum var. ultimum, and a hemibiotrophic fungus, Magnaporthe oryzae, revealed diversity in the size of some families although a...
خسارتهای ناشی از عوامل بیماریزا یکی از نگرانیهای اصلی در کشت و تولید گلرنگ بهشمار میرود. در بین روشهای مختلف کنترل و کاهش خسارت ناشی از این عوامل استفاده از ارقام مقاوم مطمئنترین روش محسوب میگردد. این مطالعه بهمنظور کارایی روش اصلاحی انتخاب در افزایش مقاومت ژنوتیپهای گلرنگ به بیمارگر Pythium ultimum در شرایط مزرعه طی سالهای 1388 و 1389 در مزرعه تحقیقاتی دانشگاه علوم کشاورزی ومنابع طب...
Biological control plays a crucial role in grapevine pathogens disease management. The cell-wall degrading enzymes chitinase, cellulase and β-glucanase have been suggested to be essential for the mycoparasitism activity of Trichoderma species against grapevine fungal pathogens. In order to develop a useful strain as a single source of these vital enzymes, it was intended to incorporate the char...
1Department of Biology, Faculty of Science, United Arab Emirates University, Al-Ain, 17551, United Arab Emirates; 2Department of Microbiology, Faculty of Science, University of Ain Shams, Cairo, 11566, Egypt; 3School of Biological Sciences and Biotechnology, Division of Science and Engineering, Murdoch University, Murdoch, W.A., 6150, Australia (e-mail: [email protected]); 4Soil Science an...
The aim of this study was to determine the temporal release of fatty acids and sugars from corn and cucumber seeds during the early stages of seed germination in order to establish whether sugars found in exudate can prevent exudate fatty acid degradation by Enterobacter cloacae. Both saturated (long-chain saturated fatty acids [LCSFA]) and unsaturated (long-chain unsaturated fatty acids [LCUFA...
The studies on the biocontrol potential of pink pigmented facultative methylotrophic (PPFM) bacteria other than the genus Methylobacterium are scarce. In the present study, we report three facultative methylotrophic isolates; PPO-1, PPT-1, and PPB-1, respectively, identified as Delftia lacustris, Bacillus subtilis, and Bacillus cereus by 16S rRNA gene sequence analysis. Hemolytic activity was t...
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