نتایج جستجو برای: rhizoctonia solani pseudomonas fluoresecns

تعداد نتایج: 57520  

2007
Phillip Wharton

Rhizoctonia stem canker and black scurf diseases of potato are caused by the fungus Rhizoctonia solani Kühn (teleomorph Thanatephorus cucumeris [A. B. Frank] Donk) and can be found on all underground parts of the plant at various times during the growing season. Rhizoctonia solani (Deuteromycetes, Mycelia Sterilia) is a species complex of 13 anastomosis groups (AGs), which are categorized accor...

Journal: :The Journal of antibiotics 2000
K K Kim J G Kang S S Moon K Y Kang

An antifungal bacterial strain, isolated from a greenhouse soil sample, inhibits growth of microflora nearby. It was selected for further studies of bacterial antifungal properties. This isolate was identified as a Pseudomonas sp. based on carbohydrate utilization, and other biochemical and physiological tests. Petri plate assay revealed that the Pseudomonas sp. exhibited antifungal activity ag...

2017
Yuanyuan Huang Zhansheng Wu Yanhui He Bang-Ce Ye Chun Li

This study aimed at evaluating the ability of SL-44 to control Rhizoctonia solani and promote pepper (Capsicum annuum) growth. Strain SL-44 was isolated from plant rhizosphere and the pot experiment results indicated that the dry and fresh weights of pepper in SL-44 and Rhizoctonia solani (S-R) treatment were 45.5% and 54.2% higher than those in Rhizoctonia solani (R) treatment and 18.2% and 31...

Journal: :Applied and environmental microbiology 2007
Anja Vespermann Marco Kai Birgit Piechulla

Volatiles of Stenotrophomonas, Serratia, and Bacillus species inhibited mycelial growth of many fungi and Arabidopsis thaliana (40 to 98%), and volatiles of Pseudomonas species and Burkholderia cepacia retarded the growth to lesser extents. Aspergillus niger and Fusarium species were resistant, and B. cepacia and Staphylococcus epidermidis promoted the growth of Rhizoctonia solani and A. thalia...

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 ...

دوستمراد ظفری, سمانه گلپایگانی غلام خداکرمیان

در سال‌های 1386 و 1387 از مزارع باقلا در استان لرستان از گیاهان مشکوک به‌ پوسیدگی ریشه و طوقه باقلا، نمونه‌برداری شد و در مجموع 121 جدایه قارچ و کرومیستا جدا شد. در این بررسی مشخص شد که فراوانی قارچ Fusarium solani که موجب پوسیدگی ریشه باقلا می‌شود، از سایر جدایه‌ها بیشتر و خسارت ناشی از آن در مزارع استان زیاد است و بعد از آن بیشترین فراوانی به ترتیب متعلق به گونه‌های F. oxysporum، Rhizoctonia ...

Journal: :چغندرقند 0
مریم کنجدی دانشجوی کارشناسی ارشد بیوتکنولوژی کشاورزی دانشگاه آزاد اسلامی، واحد سبزوار جعفر وطن دوست استادیار گروه زیست شناسی دانشگاه حکیم سبزواری علی اکبر جنت آبادی استادیار گروه دامپزشکی دانشگاه آزاد اسلامی، واحد سبزوار

in order to detect hydrogen cyanide gene and to determine pseudomonas fluorescent efficiency in producing hydrogen cyanide for controlling the growth of rhizoctonia solanipathogen (the causal agent of sugar beet root and crown rot), samples were collected from sugar beet rhizosphere in sabzevar fields. after soil sampling and purification, 31 pseudomonas spp. isolates were separated on specific...

Journal: :Journal of Biological Control 2023

Coffee is an important beverage crop in India. The soil-borne pathogen, Rhizoctonia solani Khun known to cause collar rot of coffee seedlings the nursery itself and accounts for 10-25% mortality under conducive environmental conditions. This paper presents efficacy various microbial antagonists used form biocapsules management rot. Among used, Bacillus subtilis resulted maximum reduction incide...

Journal: :FEMS microbiology ecology 2009
Modupe F Adesina Rita Grosch Antje Lembke Tzenko D Vatchev Kornelia Smalla

The rhizosphere competence of 15 in vitro antagonists of Rhizoctonia solani was determined 4 weeks after sowing inoculated lettuce seeds into nonsterile soil. Based on the colonization ability determined by selective plating, eight strains were selected for growth chamber experiments to determine their efficacy in controlling bottom rot caused by R. solani on lettuce. Although in the first expe...

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

rhizoctonia solani قارچی خاکزیست و برای بقای ساپروفیتی وگسترش خود در خاک توده های متراکم و سخت میسیلیومی تولید میکند. علی رغم تاثیر نسبی پاره ای از مواد شیمیایی در کنترل این بیماری به نظر میرسد کاربرد ترکیبات شیمیایی جهت مهار بیماری از نظر اقتصادی و زیست محیطی قابل توجیه نمی باشد. تصور میشود کنترل بیولوژیک یکی از روش های مناسب مبارزه با این بیماریست.

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