نتایج جستجو برای: rhizoctonia spp

تعداد نتایج: 53359  

Journal: :Selcuk journal of agriculture and food sciences 2022

This study was carried out to determine the anastomosis groups and disease severity of Rhizoctonia solani, which causes root collar rot in chickpea production areas Konya. A total eleven isolates spp. were obtained isolations made from plants surveys. examined microscopically grouped as multinucleate, binucleate according number nuclei. Ten multinucleate identified R. while one isolate sp. In p...

Journal: :The Biochemical journal 1998
F Xu R M Berka J A Wahleithner B A Nelson J R Shuster S H Brown A E Palmer E I Solomon

A Myceliophthora thermophila laccase and a Rhizoctonia solani laccase were mutated on a pentapeptide segment believed to be near the type-1 Cu site. The mutation L513F in Myceliophthora laccase and the mutation L470F in Rhizoctonia laccase took place at a position corresponding to the type-1 Cu axial methionine (M517) ligand in Zucchini ascorbate oxidase. The triple mutations V509L,S510E,G511A ...

2016
Sara Domínguez M. Belén Rubio Rosa E. Cardoza Santiago Gutiérrez Carlos Nicolás Wagner Bettiol Rosa Hermosa Enrique Monte

Trichoderma is a fungal genus that includes species that are currently being used as biological control agents and/or as biofertilizers. In addition to the direct application of Trichoderma spp. as biocontrol agents in plant protection, recent studies have focused on the beneficial responses exerted on plants, stimulating the growth, activating the defenses, and/or improving nutrient uptake. Th...

2017
Nguyen Van Minh E-Eum Woo Gang-Seon Lee Dae-Won Ki In-Kyoung Lee Sang-Yeob Lee Kyeonghun Park Jaekyeong Song Jae Eul Choi Bong-Sik Yun

Ginseng damping-off, caused by the fungal pathogens Rhizoctonia solani and Pythium sp., is a critical disease in ginseng seedling. In a continuing effort to find microorganisms with the potential of acting as a biocontrol agent against Rhizoctonia damping-off, we found that a Streptomyces sp. A501 showed significant antifungal activity against Rhizoctonia solani. In field experiment to test the...

2014
S. J. Abbas B. Ahmad P. Karlovsky

Rhizoctonia solani anastomosis group AG2-2 IIIB is a severe sugar beet and maize pathogen. It causes crown and root rot disease which le ads to y ield losses world-wide. The soil-borne pathogen is d ifficult to detec t and quantify by conventional methods. We developed a real-time PCR (qPCR) assay for the quantification of genomic DNA of Rhizoctonia solani AG2-2 IIIB based on the ITS region of ...

ژورنال: :چغندرقند 2005
مهیار شیخ الاسلامی

قارچ های بیماری زای بسیاری سبب ایجاد پوسیدگی ریشه چغندرقند در مراحل مختلف می شوند. در بین آن ها rhizoctonia spp.  سبب پوسیدگی های طوقه و ریشه، پوسیدگی خشک و پوسیدگی بنفش ریشه می شود (whitney and duffos 1986). پوسیدگی ریشه توسط قارچ phytophthora drechsleri tucker در مزارعی که ریشه چغندر در معرض رطوبت بیش از حد معمول خاک قرار دارد، مشاهده شده است (habibi 1975). قارچ fitzp. (edson) pythium aphanid...

Journal: :journal of crop protection 2012
mohammad reza eslahi

to identify the fungi associated with foot and root rot of wheat in the khuzestan province, diseased samples were collected at all growth stages in three growing seasons of 2004-2007. pieces of infected parts of the root and foot were surface sterilized and cultured on acidic and non acidic pda media. one hundred and fifteen isolates were obtained and on the basis of macroscopic and microscopic...

Journal: :علوم گیاهان زراعی ایران 0
محمد انتصاری دانش آموخته ارشد پردیس کشاورزی تهران فرزاد شریف زاده دانشیار پردیس کشاورزی کرج محمد دشتکی کارشناس پردیس کشاورزی کرج مسعود احمد زاده دانشیار پردیس کشاورزی کرج

the effects of bio-priming with different isolates of biological agent of trichoderma spp. and pseudomonas fluorescens on morphological and physiological characteristics of a bean cultivar (yaas) as well as their effects on controlling of rhizoctonia solani were investigated in two separate experiments. in the first experiment, different isolates of trichoderma including trichoderma harzianum b...

Journal: :Botanical Gazette 1917

2011
M. Seema S. S. Sreenivas N. D. Rekha N. S. Devaki

The antifungal effect of 10 plant extracts viz., Thevetia peruviana, Ocimum basilicum, Piper betel, Murraya koenigii, Chrysanthemum coronarium, Polyalthia longifolia, Catharanthus roseus, Pelargonium graveolens, Moringa officinalis and Lawsonia inermis were evaluated by poisoned food technique against Rhizoctonia solani Kuhn, the causal organism of sore shin disease of tobacco. Among all the pl...

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