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The effects of different disease-resistant cultivars of banana on rhizosphere microbial communities and enzyme activities

文献类型： 外文期刊

作者： Sun, Jianbo 1 ; Peng, Ming 1 ; Wang, Yuguang 1 ; Li, Wenbin 1 ; Xia, Qiyu 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Key Lab Biol & Genet Resources Torp Crops, Minist Agr, Inst Trop Biosci & Biotechnol, Hai Kou 571101, Hai Nan Provinc, Peoples R China

关键词： Bacterial community;Banana;Enzyme activity;Real-time PCR;Rhizosphere;T-RFLP

期刊名称：FEMS MICROBIOLOGY LETTERS （ 影响因子：2.742； 五年影响因子：2.856 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： To understand the mechanism of soil microbial ecosystem and biochemical properties in suppressing soilborne plant diseases, the relationship between the soil rhizosphere microbial communities, hydrolase activities, and different disease-resistant cultivars was investigated. There were statistically significant differences in microbial diversity in the rhizosphere soil between the disease-tolerant cultivar Fj01 and susceptible cultivar Baxi. The rhizosphere soil of Fj01 showed a trend of higher microbial diversity than that of Baxi. At the same growth stage, the similar trends of variation in microbial community diversity between the two different cultivars were observed. The bacterial community abundance in rhizosphere soil from the two banana cultivars was quantified by real-time PCR assays. The size of the rhizosphere bacterial population from the Fj01 was significantly larger than that from the Baxi during the growing stage from July to September. The activities of urease and phosphatase were analyzed to study the effects of the two banana cultivars to soil ecosystem functioning. Urease activity was significantly higher in the rhizosphere soil of Fj01 than that of Baxi in the period from July to September. However, phosphatase activity showed no significant difference between the two different rhizosphere soils.

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