نتایج جستجو برای: p syringae pvsyringae
تعداد نتایج: 1272216 فیلتر نتایج به سال:
Strains of the well-studied plant pathogen Pseudomonas syringae show large differences in their ability to colonize plants epiphytically and to inflict damage to hosts. Additionally, P. syringae can infect some sap-sucking insects and at least one P. syringae strain is highly virulent to insects, causing death to most individuals within as few as 4 days and growing to high population densities ...
بادام از قدیمی ترین درختان میوه هسته دار می باشدکه یکی از بیشترین تولیدات خشکبار جهان را به خود اختصاص داده است. شانکر باکتریایی که بوسیله پاتووار های pseudomonas syringae ایجاد می شود یکی از مشکلات جدی باغ های درختان میوه هسته دار می باشد. در این تحقیق طی سال های 1391-1390 نمونه برداری از باغات بادام و در کنار آن درختان میوه هسته دار واقع در مناطق مختلف استان خراسان رضوی صورت گرفت. علائم بیمار...
تنوع ژنتیکی 60 جدایه از باکتری pseudomonas syringae pv. syringae، عامل پوسیدگی باکتریایی غلاف برگ برنج و بلایت باکتریایی برگ گندم، جمع آوری شده از خزانه و مزارع برنج و گندم استان گیلان، با استفاده از نشانگر rapd مورد ارزیابی قرار گرفت. تمامی 60 جدایه طی سال های 1384-1386 در استان گیلان شناسایی شده بودند. جدایه xanthomonas arboricola pv. pruni 2535 cfbp جداشده از آلو از کشور فرانسه به عنوان گروه...
Diagnosis and detection are key aspects related to plant health status. A critical review of the available diagnostic methods utilised for Agrobacterium rhizogenes and A. tumefaciens, Pseudomonas amygdali, P. syringae pv. mors-prunorum, P. syringae pv. persicae, P. syringae pv. syringae and Xanthomonas arboricola pv. pruni, the main pathogens of the stone fruit trees, is presented. As there is ...
Plant-pathogenic bacteria produce various extracellular polysaccharides (EPSs) which may function as virulence factors in diseases caused by these bacteria. The EPS levan is synthesized by the extracellular enzyme levansucrase in Pseudomonas syringae, Erwinia amylovora, and other bacterial species. The lsc genes encoding levansucrase from P. syringae pv. glycinea PG4180 and P. syringae pv. phas...
Many pathogens are virulent because they specifically interfere with host defense responses and therefore can proliferate. Here, we report that virulent strains of the bacterial phytopathogen Pseudomonas syringae induce systemic susceptibility to secondary P. syringae infection in the host plant Arabidopsis thaliana. This systemic induced susceptibility (SIS) is in direct contrast to the well s...
Pseudomonas syringae pv. phaseolicola, a gram-negative bacterial plant pathogen, is the causal agent of halo blight of bean. In this study, we report on the genome sequence of P. syringae pv. phaseolicola isolate 1448A, which encodes 5,353 open reading frames (ORFs) on one circular chromosome (5,928,787 bp) and two plasmids (131,950 bp and 51,711 bp). Comparative analyses with a phylogeneticall...
The avirulence gene avrPph3 from Pseudomonas syringae pv. phaseolicola was tested for its ability to convert virulent P. syringae pv. tomato strain DC3000 to avirulence on Arabidopsis. In F2 plants from a cross between resistant and susceptible ecotypes, the ratio of resistant to susceptible plants was approximately 3:1, indicating that resistance to DC3000(avrPph3) is determined by a single do...
RPG1 and RPM1 are disease resistance genes in soybean and Arabidopsis, respectively, that confer resistance to Pseudomonas syringae strains expressing the avirulence gene avrB. RPM1 has recently been demonstrated to have a second specificity, also conferring resistance to P. syringae strains expressing avrRpm1. Here we show that alleles, or closely linked genes, exist at the RPG1 locus in soybe...
Several pathovars of Pseudomonas syringae produce the phytotoxin coronatine (COR), which contains an unusual amino acid, the 1-amino-2-ethylcyclopropane carboxylic acid called coronamic acid (CMA), which is covalently linked to a polyketide-derived carboxylic acid, coronafacic acid, by an amide bond. The region of the COR biosynthetic gene cluster proposed to be responsible for CMA biosynthesis...
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