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Effect of biofumigation and chemical fumigation on soil microbial community structure and control of pepper Phytophthora blight

文献类型： 外文期刊

作者： Wang, Qiujun 1 ; Ma, Yan 1 ; Yang, Hao 1 ; Chang, Zhizhou 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Peoples R China

关键词： Biofumigation;Disease incidence of pepper;Soil bacterial community;Soil fungal community;Soil chemical properties

期刊名称：WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY （ 影响因子：3.312； 五年影响因子：3.58 ）

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收录情况： SCI

摘要： Soil biofumigation with brassica plant residues has been shown to significantly suppress soilborne pathogen. However, little published data reported the impact of biofumigation on microbial community structure in pepper (Capsicum annuum L.) production systems under field conditions. Biofumigation with rapeseed (Brassica napus 'Dwarf Essex') meal and chemical fumigation with dazomet were tested to control the pepper disease caused by Phytophthora capsici. BF treatment showed the lowest disease incidence among these treatments. Effects on soil bacterial and fungal communities were assessed by denaturating gradient gel electrophoresis and the results showed that the biofumigation increased bacterial diversity and decreased fungal diversity. There was a negative correlation between soil bacterial diversity and disease incidence and a positive correlation between soil fungal diversity and disease incidence. Cloning of the microbial community showed that the microbial community structures were altered by biofumigation. Soil was also evaluated for their chemical properties. Biofumigation increased soil content of total N, NO3 (-)-N, available P and available K. A significant correlation between soil microbial community structures and soil chemical properties was found. Overall, these results indicated that biofumigation reduced disease incidence of pepper through altering soil microbial community structures.

  • 相关文献

[1]Integration of biofumigation with antagonistic microorganism can control Phytophthora blight of pepper plants by regulating soil bacterial community structure. Wang, Qiujun,Ma, Yan,Wang, Guangfei,Gu, Zhiguang,Sun, Di,An, Xia,Chang, Zhizhou. 2014

[2]Impact of brassicaceous seed meals on the composition of the soil fungal community and the incidence of Fusarium wilt on chili pepper. Ma, Yan,Gentry, Terry,Hu, Ping,Pierson, Elizabeth,Gu, Mengmeng,Yin, Shixue.

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