نتایج جستجو برای: two streptomyces isolates inhibited mycelial growth of r. solani ag

تعداد نتایج: 21392426  

Journal: :چغندرقند 0
اکرم صادقی مربی پژوهشی پژوهشکده بیوتکنولوژی کشاورزی

biological control of sugar beet damping-off of rhizoctonia solani ag-4 by two native streptomyces isolates (s2 and c) was evaluated in green house and field conditions. in dual culture, two streptomyces isolates inhibited mycelial growth of r. solani ag-4. besides, volatile components of s2 and c inhibited r. solani mycelial growth for 72 and 74 percentages, respectively. soil treatment either...

Journal: :چغندرقند 0
مائده شهیری طبرستانی کارشناس ارشد بیماری شناسی گیاهی

due to high antagonistic activity of trichoderma harizanum, 5 isolates t.h.k, t.h.bi, t.h.mo, var33 and torbat vi were selected and their efficacy was studied for controlling sugar beet damping-off caused by rhizoctonia solani, under in vitro and in vivo conditions.  antagonistic ability of t. harzianum isolates was investigated as dual culture on pda in concomitant and sequential cultures, 48 ...

2015
Md. Aktaruzzaman Joon-Young Kim Tania Afroz Byung-Sup Kim

Herein, we report the first occurrence of web blight of rosemary caused by Rhizoctonia solani AG-1-IB in Gangneung, Gangwon Province, Korea, in August 2014. The leaf tissues of infected rosemary plants were blighted and white mycelial growth was seen on the stems. The fungus was isolated from diseased leaf tissue and cultured on potato dextrose agar for identification. The young hyphae had acut...

ژورنال: علوم آب و خاک 2006
عیدی بازگیر, , جهانشیر شاکرمی, , محمد فیضیان, ,

To search for reproducible and environment-friendly antifungal agents, essential oils of five plant species including Myrtus communis, Mentha aquatica, Vitex agnus-castus, Thymus daenensis and Artemisia aucheri were studied for their inhibition effects on the mycelial growth of plant pathogenic fungi including Fusarium oxysporum, Pythium ultimum, Rhizoctonia solani and Gaeumannomyces graminis. ...

2017
Aphidech Sangdee

Actinobacteria from the genus Streptomyces have been studied as potential biocontrol agents worldwide. In this study, a total of 35 isolates of Actinomycete like colonies were isolated from the rhizospheres of various plant species. These isolates were primary screened for antagonistic activity to inhibit mycelial growth of Colletotrichum gloeosporioides. The screen revealed that seven isolates...

2015
Viviane Cordovez Victor J. Carrion Desalegn W. Etalo Roland Mumm Hua Zhu Gilles P. van Wezel Jos M. Raaijmakers

In disease-suppressive soils, plants are protected from infections by specific root pathogens due to the antagonistic activities of soil and rhizosphere microorganisms. For most disease-suppressive soils, however, the microorganisms and mechanisms involved in pathogen control are largely unknown. Our recent studies identified Actinobacteria as the most dynamic phylum in a soil suppressive to th...

In vitro studies with Trichoderma spp., soil-borne fungal antagonists, demonstrated that a number of isolates produced volatile and non-volatile metabolites capable of inhibiting the growth and sporulation of several soil-borne plant pathogenic fungi. Microscopic observations showed that T. harzianm and T. viride, isolated from soil samples from Ahwaz and Karaj, adversely affected the myce...

Journal: :چغندرقند 0
مائده شهیری طبرستانی کارشناس ارشد بیماری شناسی گیاهی از دانشگاه فردوسی ماهرخ فلاحتی رستگار عضو هیئت علمی دانشکده کشاورزی دانشگاه فردوسی بهروز جعفرپور عضو هیئت علمی دانشکده کشاورزی دانشگاه فردوسی مشهد حمید روحانی عضو هیئت علمی دانشکده کشاورزی دانشگاه بوعلی سینا

due to the high antagonistic activity of bacterium, bacillus subtilis (ehrenberg) cohn, three isolates (b.s.ham, 204 and 202) were selected and their efficacy were studied in control of sugar beetdamping–off caused by rhizoctonia solani , in  in vitro and in vivo conditions.  in dual culture on pda, all isolates of b.subtilis inhibited mycelial growth of r.solani.  significantly, volatile metab...

Journal: :journal of sciences islamic republic of iran 0

in vitro studies with trichoderma spp., soil-borne fungal antagonists, demonstrated that a number of isolates produced volatile and non-volatile metabolites capable of inhibiting the growth and sporulation of several soil-borne plant pathogenic fungi. microscopic observations showed that t. harzianm and t. viride, isolated from soil samples from ahwaz and karaj, adversely affected the mycelial ...

ژورنال: علوم آب و خاک 2008
احمدزاده, مسعود, جوان نیکخواه, محمد , شریفی تهرانی, عباس , سارانی, شیراحمد ,

  Two hundred fifty seven bacterial isolates were collected from colza root and rhizosphere in Golestan, Mazandaran, Guilan and Tehran provinces. Antagonistic effect of bacterial isolates on Rhizoctonia solani, the causal agent of colza damping off, was studied using dual culture method. The results showed that, 60 isolates had the ability to inhibit the growth of R. solani on PDA medium. On th...

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