The effects and interrelationships of intercropping on Cotton Verticillium wilt and soil microbial communities

BMC Microbiology

article

Zhang, Yun¹  Yang, Yuanxue¹  Lu, Xiuyun²  Wang, Aiyu¹  Xue, Chao¹  Zhao, Ming¹  Zhang, Jianhua¹ 

[1] Institute of Industrial Crops, Shandong Academy of Agricultural Sciences;Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences

关键词: Interplanting;    Cotton Verticillium wilt;    Soil;    Microbial community structure;   

DOI  :  10.1186/s12866-023-02780-6

学科分类：放射科、核医学、医学影像

来源: BioMed Central

【 摘 要 】

Cotton Verticillium wilt, causing by Verticillium dahliae, has seriously affected the yield and quality of cotton. The incidence of Verticillium wilt in cotton fields has been on the rise for many years, especially after straw has been returned to the fields. Intercropping can reduce the incidence of soil borne diseases and is often used to control crop diseases, but the relationship between the effects of intercropping on microbial communities and the occurrence of plant diseases is unclear. This research explored the relationship between soil microbial community structure and Cotton Verticillium wilt in interplanting of cotton-onion, cotton-garlic, cotton-wheat and cotton monocultures. Amplicon sequencing applied to the profile of bacterial and fungal communities. The results showed that the disease index of Cotton Verticillium wilt was significantly reduced after intercropping with cotton-garlic and cotton-onion. Chao1 and Sobs indices were not significantly different in the rhizosphere soil and pre-plant soils of the four planting patterns, but the pre-plant fungal shannon index was significantly lower in the cotton-onion intercropping plot than in the other three plots. PCoA analysis showed that the soil microbial communities changed to a certain extent after intercropping, with large differences in the microbial communities under different cropping patterns. The abundance of Chaetomium was highest in the cotton-garlic intercropping before planting; the abundance of Penicillium was significantly higher in the cotton-wheat intercropping than in the other three systems. Cotton-garlic and cotton-onion interplanting can control Cotton Verticillium wilt by affecting the soil microbial community. Fungi of the genera Chaetomium and Penicillium may be associated with plant disease resistance.

【 授权许可】

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