数字农科院2.0

Silicon Impacts On Soil Microflora Under Ralstonia Solanacearum Inoculation

文献类型： 外文期刊

作者： Jiang Ni-hao;Wang Guo-ping;Lin Wei-peng;Lin Wei-peng;Peng Li;Fan Xue-ying;Gao Yang;Jiang Ni-hao;Lin Wei-peng;Fan Xue-ying;Gao Yang;Cai Kun-zheng;Cai Kun-zheng

作者机构：

关键词： Bacterial Wilt; Deep Pyrosequencing; Ralstonia Solanacearum; Silicon; Soil Microbial Community

期刊名称： JOURNAL OF INTEGRATIVE AGRICULTURE

ISSN： 2095-3119

年卷期： 2020 年 19 卷 1 期

页码：

摘要： Silicon (Si) can increase plant resistance against bacterial wilt caused by Ralstonia solanacearum and enhance plant immune response. However, whether Si alleviates soil-borne disease stress through altering soil microbial community component and diversity is not clear. In this study, effects of Si application under R. solanacearum inoculation with or without plant on soil bacterial and fungal communities were investigated through high-throughput pyrosequencing technique. The results showed that Si addition significantly reduced bacterial wilt incidence. However, Si did not reduce the amount of R. solanacearum in rhizosphere soil. Principal components analysis showed that soil microbial community composition was strongly influenced by Si addition. Total 63.7% bacterial operational taxonomic units (OTUs) and 43.8% fungal OTUs were regulated by Si addition regardless of the presence of tomato plants, indicating the independent effects of Si on soil microbial community. Si-added soil harbored a lower abundance of Fusarium, Pseudomonas, and Faecalibacterium. Our finding further demonstrated that exogenous Si could significantly influence soil microbial community component, and this may provide additional insight into the mechanism of Si-enhanced plant resistance against soil-borne pathogens.

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