Mycoparasitic Trichoderma viride as a biocontrol agent against Fusarium oxysporum f. sp adzuki and Pythium arrhenomanes and as a growth promoter of soybean
Mycoparasitic Trichoderma viride as a biocontrol agent against Fusarium oxysporum f. sp adzuki and Pythium arrhenomanes and as a growth promoter of soybean
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DOI：
10.1016/j.cropro.2010.08.004
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发表时间：
2010-12-01
期刊：
影响因子：
2.8
通讯作者：
Surampalli, R. Y.
中科院分区：
文献类型：
--
作者：
John, Rojan P.;Tyagi, R. D.;Surampalli, R. Y.
绿色木霉是一种有效的生防真菌，对枯萎病有较好的防治效果。sp. adzuki和腐霉Pythium sp.在离体生防试验中，木霉菌对供试真菌病原菌表现出重寄生性和破坏性控制作用。这两种病原菌对种子萌发都有显著影响，其中黑腐病菌的影响最大（仅5%的种子萌发率）。大豆植株的根系由于感染而发育不良，并且它对植株的生长和进一步生长阶段产生负面影响。在盆栽试验中，木霉菌对大豆植株表现出促生作用，沿着生防活性。12周后，木霉菌促进了枝条和根系的生长，提高了果实产量。腐霉和镰刀菌感染的植物处理木霉菌有类似的194%和141%以上的高度比单独的病原体。用木霉处理的果实产量类似于每株植物66个，而对照植物的产量仅为41个。感染腐霉和镰刀菌的植株经木霉处理后，其果实产量分别为43和53粒，分别是感染病原菌植株的5倍和1.6倍。(C)2010爱思唯尔有限公司版权所有。
Trichoderma viride was proved as an effective biocontrol agent against two fungal pathogens, Fusarium oxysporum f. sp. adzuki and Pythium arrhenomanes, infecting soybean. During an in vitro biocontrol test, Trichoderma showed mycoparasitism and destructive control against the tested fungal pathogens. Both the pathogens significantly influence the germination and P. arrhenomanes had a severe effect (only 5% germination). The root system of the soybean plant was poorly developed due to the infection and it exerted a negative influence on the nodulation and further growth phases of the plant. During pot assay along with biocontrol activity, Trichoderma showed growth promoting action on the soybean plant. Trichoderma enhanced growth of shoot and root systems and fruit yield after 12 weeks of growth. Pythium and Fusarium infected plants treated with Trichoderma had similar to 194% and 141% more height than pathogens alone. The fruit yield treated with Trichoderma was similar to 66 per plant whereas the yield was only 41 for a control plant. The plants infected with Pythium and Fusarium and treated with Trichoderma had fruit yields of 43 and 53 respectively and those were 5 and 1.6 times higher than plants infected with pathogens. (C) 2010 Elsevier Ltd. All rights reserved.