EFFECT OF PSEUDOMONAS FLUORESCENS ISOLATES ON RHIZOCTONIA SOLANI KÜHN THE CAUSAL AGENT OF SHEATH BLIGHT ON RICE

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NIKNEZHAD KAZEMPOUR M.

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Journal: Year:2007 | Volume:12 | Issue:4 Page(s): 729-744

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Title

EFFECT OF PSEUDOMONAS FLUORESCENS ISOLATES ON RHIZOCTONIA SOLANI KÜHN THE CAUSAL AGENT OF SHEATH BLIGHT ON RICE

Author(s)

NIKNEZHAD KAZEMPOUR M. | Issue Writer Certificate

Keywords

SHEATH BLIGHTQ2

RICEQ3

RHIZOCTONIA SOLANIQ3

ANTAGONISTICS BACTERIAQ3

Abstract

In this research, antifungal effects of some ANTAGONISTICS BACTERIA were investigated against RHIZOCTONIA SOLANI Kuhn, the causal agent of RICE SHEATH BLIGHT, collected from infected RICE field in Rasht, Lahijan, Foman, Talesh and Astara of Guilan province. Of 288 bacterial isolates, cultured from hizosphere of infected RICE Plants, eight G-Ve strains were considered as antagonists demonstrated by dual culture method. According to results of biochemical and morphological test, all eight isolates encoded B4, B6, B17, B18, B22, B24, B41 and B42 were identified as Pseudomonas fluorescens biovar 3. In determining the effects of volatile metabolites produced by antagonistic bacteria, all strains, inhibited mycelial growth of R. solani under in vitro condition. Culture filtrates and antibiotics produced by these strains could inhibit the normal growth of the pathogen. All P. fluorescens strains produced siderophore on King’s B containing 5, 50 and 100 μmol FeCl3 which in turn inhibited growth of the Geotrichum candidum on the other hand, all P. fluorescens strains reduced the rate of fungal germination and caused lysis of R.solani sclerotia. The bacteria colonization experiment showed that the population density of strains B42, B41 and B22 were increased on RICE root system to 3.67, 2.98 and 2.94 CFU logarithm, respectively.

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بررسی اثر چند قارچ کش و قارچ آنتاگونیست علیه Rhizoctonia solani Kuhn عامل بیماری سوختگی غلاف برنج

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APA: Copy

NIKNEZHAD KAZEMPOUR, M.. (2007). EFFECT OF PSEUDOMONAS FLUORESCENS ISOLATES ON RHIZOCTONIA SOLANI KÜHN THE CAUSAL AGENT OF SHEATH BLIGHT ON RICE. JOURNAL OF AGRICULTURAL SCIENCES, 12(4), 729-744. SID. https://sid.ir/paper/7791/en

Vancouver: Copy

NIKNEZHAD KAZEMPOUR M.. EFFECT OF PSEUDOMONAS FLUORESCENS ISOLATES ON RHIZOCTONIA SOLANI KÜHN THE CAUSAL AGENT OF SHEATH BLIGHT ON RICE. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2007;12(4):729-744. Available from: https://sid.ir/paper/7791/en

IEEE: Copy

M. NIKNEZHAD KAZEMPOUR, “EFFECT OF PSEUDOMONAS FLUORESCENS ISOLATES ON RHIZOCTONIA SOLANI KÜHN THE CAUSAL AGENT OF SHEATH BLIGHT ON RICE,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 12, no. 4, pp. 729–744, 2007, [Online]. Available: https://sid.ir/paper/7791/en

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