نتایج جستجو برای: قارچ r solani

تعداد نتایج: 456896  

2014
James K. Hane Jonathan P. Anderson Angela H. Williams Jana Sperschneider Karam B. Singh

Rhizoctonia solani is a soil-borne basidiomycete fungus with a necrotrophic lifestyle which is classified into fourteen reproductively incompatible anastomosis groups (AGs). One of these, AG8, is a devastating pathogen causing bare patch of cereals, brassicas and legumes. R. solani is a multinucleate heterokaryon containing significant heterozygosity within a single cell. This complexity posed ...

Journal: :Phytopathology 2003
Fabrício A Rodrigues Francisco X R Vale Lawrence E Datnoff Anne S Prabhu Gaspar H Korndörfer

ABSTRACT The objective of this study was to determine the effect of silicon (Si) and rice growth stages on tissue susceptibility to sheath blight (Rhizoctonia solani Kühn) under controlled conditions. Rice plants (cv. Rio Formoso) were grown in pots containing low-Si soil amended with Si at 0, 0.48, 0.96, 1.44, and 1.92 g pot(-1) and inoculated with R. solani at the following days after emergen...

2017
Stijn van Gils Giovanni Tamburini Lorenzo Marini Arjen Biere Maaike van Agtmaal Olaf Tyc Martine Kos David Kleijn Wim H van der Putten

There is increasing evidence showing that microbes can influence plant-insect interactions. In addition, various studies have shown that aboveground pathogens can alter the interactions between plants and insects. However, little is known about the role of soil-borne pathogens in plant-insect interactions. It is also not known how environmental conditions, that steer the performance of soil-bor...

ژورنال: :نشریه علوم و فنون پسته 0
فهیمه سلاجقه تذرجی fahimeh salajegheh tezerji kermanکرمان حمید محمدی hamid mohammadi kermanکرمان مهدی سرچشمه پور mehdi sarcheshmehpour kermanکرمان

در طول بهار و تابستان سال 1391 جهت مطالعه زوال نهال­های پسته از برخی نهالستان­های استان کرمان بازدید به عمل آمد. از نهال­های بیمار با علائم زردی، پژمردگی، کم­برگی، کوتولگی و پوسیدگی ریشه نمونه­برداری و به آزمایشگاه منتقل گردید. برای جداسازی عوامل بیماری، قطعات کوچکی از ریشه­های آلوده پس از ضدعفونی سطحی با محلول سفیدکننده 10 درصد و شستشو با آب مقطر سترون، بر روی محیط کشت pda کشت داده شده و در دم...

Journal: :Toprak bilimi ve bitki besleme 2022

Bu çalışmada, nane yetiştiriciliğinde önemli hastalıklara sebep olan fungal patojenlerden Fusarium oxysporum ve Rhizoctonia solani' ye karşı Trichoderma harzianum virens biyolojik kontrol etmenlerinin etkisi araştırılmıştır. aşamada solgunluk belirtisi gösteren bitkilerinin köklerinden yapılan izolasyonlar sonucunda F. R. solani izolatları elde edilmiş tanıları yapılmıştır. In vivo’da T. biyoet...

2017
P. A. Peña Kent Eskridge Carlos A. Urrea

Rhizoctonia solani causes economically important root and hypocotyl diseases in common bean throughout the world. Root health is a vital factor in plant development and root diseases would negatively influence water and nutrient uptake as well as cause direct stand reduction and root rot damage to the crop. An efficient common bean screening method to evaluate damping-off and early root/ hypoco...

2015
Jamil Samsatly Rony Chamoun Emile Gluck-Thaler Suha Jabaji

Vitamin B6 is recognized as an important cofactor required for numerous metabolic enzymes, and has been shown to act as an antioxidant and play a role in stress responses. It can be synthesized through two different routes: salvage and de novo pathways. However, little is known about the possible function of the vitamin B6 pathways in the fungal plant pathogen Rhizoctonia solani. Using genome w...

Journal: :Plant physiology 2010
Jonathan P Anderson Judith Lichtenzveig Cynthia Gleason Richard P Oliver Karam B Singh

The fungal necrotrophic pathogen Rhizoctonia solani is a significant constraint to a range of crops as diverse as cereals, canola, and legumes. Despite wide-ranging germplasm screens in many of these crops, no strong genetic resistance has been identified, suggesting that alternative strategies to improve resistance are required. In this study, we characterize moderate resistance to R. solani a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده کشاورزی 1391

قارچ های میکوریز داخلی (am) دارای یک رابطه همزیستی با گونه های مختلف گیاهی هستند. در این مطالعه تأثیر دو گونه از قارچ های میکوریز داخلی به نام های glomus mosseae و g. intraradices به تنهایی و ترکیب آن ها بر رشد (ارتفاع ساقه و وزن خشک ریشه و ساقه) و بیماری پوسیدگی ریشه نخود (cicer arietinum l.) ونخود فرنگی (pisum sativum l.) با عامل fusarium solani f.sp. pisi در شرایط گلخانه ای مورد ارزیابی قرار...

Journal: :International journal of biological macromolecules 2014
Said S Elkholy Hend A Salem Mohamed Eweis Maher Z Elsabee

Three acyl derivatives of chitosan (CS) with different side chains were synthesized and their structures were characterized. Their swelling behavior was investigated. The antifungal behavior of these chitosan derivatives was investigated in vitro on the mycelial growth, sporulation and germination of conidia or sclerotia of the sugar-beet pathogens, Rhizoctonia solani K"uhn (AG2-2) and Scleroti...

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