文献类型： 外文期刊

作者： Huang, Feiyan ¹ ; Deng, Xiaopeng ² ; Gao, Lingling ³ ; Cai, Xianjie ⁴ ; Yan, Ding ⁴ ; Cai, Yongzhan ⁵ ; Chen, Xiaolong ⁶ ; Yang, Min ¹ ; Tong, Wenjie ² ; Yu, Lei ¹ ;

作者机构： 1.Kunming Univ Yunnan Urban Agr Engn & Technol Res, Kunming 650214, Yunnan, Peoples R China

2.Yunnan Acad Tobacco Agr Sci, Kunming 650021, Yunnan, Peoples R China

3.Henan Acad Agr Sci, Ctr Agr Prod Proc, Zhengzhou 450002, Peoples R China

4.Shanghai Tobacco Grp Co Ltd, Mat Procurement Ctr, Shanghai 200082, Peoples R China

5.Yunnan Prov Tobacco Co Qujing Branch, Qujing 655000, Peoples R China

6.China Tobacco Henan Ind Co Ltd, Tobacco Leaf Purchase Ctr, Zhengzhou 450000, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.996； 五年影响因子：5.516 ）

ISSN： 2045-2322

年卷期： 2022 年 12 卷 1 期

页码：

收录情况： SCI

摘要： Root-knot nematode disease is a catastrophic soil-borne disease in tobacco production. The regulation of natural microbial communities is considered a good disease management approach to suppress the incidence of soilborne diseases. In this study, the effects of tobacco (Nicotiana tabacum L.)-marigold (Tagetes erecta L.) rotation on the diversity and structure of soil microbial communities in continuously cropped tobacco fields were analyzed to manage this devastating pathogen. The results showed that the soil bacterial OTUs increased after marigold rotation and that the bacterial Shannon, ACE, Chao1 index, and fungal Shannon index were higher in the tobacco-marigold rotation fields than in the continuously cropped tobacco fields by 3.98%, 10.37%, 5.46%, and 3.43%, respectively. After marigold rotation, the relative abundances of Actinobacteria, Acidobacteria, and Ascomycota increased by 28.62%, 107.50%, and 57.44%, respectively, and the proportion of beneficial bacterial genera such as Nocardioides, Gemmatimonas, and Bradyrhizobium increased. In addition, our results also showed that rotation of marigold could effectively reduce the incidence of root-knot nematodes in the next crop of tobacco. These results indicate that marigold rotation had a positive effect on the soil microecological environment of continuously cropped tobacco fields, reducing the obstacles to continuous cropping of tobacco.