نتایج جستجو برای: xanthomonas spp

تعداد نتایج: 55067  

Journal: :Anais da Academia Brasileira de Ciencias 2017
Maysa S Areas Ricardo M Gonçalves José M Soman Ronaldo C Souza Ricardo Gioria Tadeu A F DA Silva Antonio C Maringoni

Bacterial spot, caused by Xanthomonas spp., is one of the major bacterial diseases in pepper (Capsicum annuum L.). The infection results in reduced crop yield, particularly during periods of high rainfall and temperature, due to the low efficiency of chemical control with copper bactericides. This study evaluated the copper and zinc sulfate sensitivity of 59 pathogenic strains of Xanthomonas eu...

2017
Céline Pesce Jonathan M. Jacobs Edwige Berthelot Marion Perret Taca Vancheva Claude Bragard Ralf Koebnik

Xanthomonas translucens is the causal agent of bacterial leaf streak, the most common bacterial disease of wheat and barley. To cause disease, most xanthomonads depend on a highly conserved type III secretion system, which translocates type III effectors into host plant cells. Mutagenesis of the conserved type III secretion gene hrcT confirmed that the X. translucens type III secretion system i...

Journal: :Hortscience 2021

Bacterial spot, caused by Xanthomonas spp., is one of the most important diseases tomato in Illinois. Field surveys were conducted during 2017–19 to assess occurrence bacterial spot commercial fields. Severity foliage and fruit infection was recorded, symptomatic samples collected from three-to-five cultivars three different farms each northern, central, southern regions ranged 0% 91% (average ...

2017
Shafqat Ali Khan Muhammad Ibrar Sami Ullah

The antibacterial activity of leaf and root ethanolic extracts as well as crude alkaloids and flavonoids from both the parts of Rhus succedanea were carried against bacterial strains viz. Staphylococcus aureus, Clavibacter michiganensis, Proteus vulgaris and Xanthomonas spp. The antibacterial activity was carried out on nutrient agar medium using disk diffusion method. The flavonoid fraction of...

2002
T VAN ANTWERPEN

Naturally occurring bacterial endophytes were isolated from the stalks of six different sugarcane varieties. The highest numbers of bacterial populations were isolated from variety N12 and this variety was used for further investigations. Xylem sap as well as crushed cane sap was used for isolations, but no differences were observed between the type and numbers of species isolated. Endophytic b...

Journal: :Annual Report of The Kansai Plant Protection Society 2014

Journal: :Brazilian Archives of Biology and Technology 2005

2016
Marta Sena-Vélez Cristina Redondo James H. Graham Jaime Cubero

Xanthomonas citri subsp. citri (Xcc) A strain causes citrus bacterial canker, a serious leaf, fruit and stem spotting disease of several Citrus species. X. alfalfae subsp. citrumelonis (Xac) is the cause of citrus bacterial spot, a minor disease of citrus nursery plants and X. campestris pv. campestris (Xc) is a systemic pathogen that causes black rot of cabbage. Xanthomonas spp. form biofilms ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده علوم کشاورزی 1388

شانکر و لکه برگی باکتریایی مهمترین بیماری های درختان میوه هسته دار در جهان و شمال کشور ما به شمار می آیند. مدیریت موفق بیماری های گیاهی در نتیجه شناخت دقیق عوامل مولد و همراه آنهاست. بدین منظور طی بررسی دو ساله (1386-1387) از سطح باغات درختان میوه هسته دار استان گلستان از بافت های دارای علایم شانکر و لکه برگی نمونه برداری و پس از اثبات بیماری زایی روی شاخه ها و برگ های هلو، جدایه های بیماری زا ...

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