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首页> 外文期刊>Indian Phytopathology >Variability in biocontrol potential and microbial interaction of Trichoderma spp. with soil inhabiting antagonistic bacteria Pseudomonas fluorescens.
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Variability in biocontrol potential and microbial interaction of Trichoderma spp. with soil inhabiting antagonistic bacteria Pseudomonas fluorescens.

机译：木霉属菌的生防潜力和微生物相互作用的变异性。与居住在土壤中的拮抗细菌荧光假单胞菌。

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摘要

Ten isolates of Trichoderma spp. collected from diverse agro-ecological habitats of West Bengal were evaluated against Fusarium oxysporum f.sp. radicislycopersici through dual culture technique and production of volatile and nonvolatile substances. T1, T7 and T10 isolates were most efficient against the test pathogen in dual culture. Similarly, T7 isolate of T. virens was highly effective against the pathogens causing 62.5% mycelia inhibition over the control by the production of volatile metabolites, where as T10 retarded 64.4% mycelia growth followed T1, T6, T2, T4 and T7 respectively which were statistically at par in their antagonistic effect by production of non volatile substances at 10% concentration. When the interaction between Trichoderma isolates and P. fluorescens on KMB was tested, the growth inhibition of biocontrol fungi was noticed upto 59.1% over control. T1 isolate of T. viride showed high level of tolerance against the Pseudomonas inhibited only 11.9% followed by T6 (13.5%) and T3 (22.4%), T5 isolate of Trichoderma was highly inhibitory against the bacterial antagonist. Inhibitory effect of P. fluorescens was comparatively more when the bacterial strain inoculated 24 h before the Trichoderma was seeded. Again significant reduction in growth of antagonistic fungus was also observed with the culture filtrate of the antagonistic bacterium even at 5% concentration. In the present investigation T6 showed highly tolerance inhibiting only 5.55% growth followed by T1 (7.03%). However in steamed soil recoverable numbers of Trichoderma population increased over the 14 days time period in all the treatments.
机译：木霉 spp的十种分离株。从西孟加拉邦的各种农业生态环境中收集的烟叶对 oxysporum f.sp.进行了评估。 radicislycopersici 通过双重培养技术生产挥发性和非挥发性物质。 T 1 ，T 7 和T 10 分离株在双重培养中对测试病原体最有效。类似地， T的T 7 分离株。 virens 对引起病原体的病原菌非常有效，这种病原体通过产生挥发性代谢产物而对菌丝体的抑制作用比控制菌高62.5％，其中T 10 抑制了64.4％的菌丝生长，而T 1 ，T 6 ，T 2 ，T 4 和T 7 分别在统计上处于同等水平通过产生浓度为10％的非挥发性物质产生拮抗作用。当木霉分离物和 P之间的相互作用时。测试了荧光素在KMB上的生长，发现其对生物防治真菌的生长抑制作用比对照高59.1％。 T的T 1 分离株。 viride 对Pseudomonas 的耐受性很高，仅抑制了11.9％，其次是T 6 （13.5％）和T 3 （ 22.4％），木霉的T 5 分离株对细菌拮抗剂具有高度抑制作用。 P的抑制作用。当在木霉播种前24小时接种细菌菌株时，荧光素相对较多。即使在5％的浓度下，拮抗细菌的培养滤液也再次观察到拮抗真菌的生长显着减少。在本研究中，T 6 显示出高度的耐受性，仅抑制5.55％的生长，其次是T 1 （7.03％）。然而，在所有处理中，在蒸腾的土壤中，木霉种群的可恢复数量在14天的时间内都增加了。

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