数字农科院2.0

Assessment Of Diazotrophicproteobacteriain Sugarcane Rhizosphere When Intercropped With Legumes (Peanut And Soybean) In The Field

文献类型： 外文期刊

作者： Solanki, MK; Wang, Z; Wang, FY; Li, CN; Gupta, CL; Singh, RK; Malviya, MK; Singh, P; Yang, LT; Li, YR

作者机构：

关键词： Intercropping; Microbial Community; High Throughput Sequencing; Nifh Gene; Sugarcane

期刊名称： FRONTIERS IN MICROBIOLOGY

ISSN： 1664-302X

年卷期： 2020 年 11 卷

页码：

收录情况： JCR（2021版）

摘要： Several factors influenced the sugarcane production, and among them, higher use of nitrogen and depletion of soil nutrient constitutes a significant concern in China. Sugarcane-legume intercropping may help to regulate the microbial structure and functions. In the present study, sugarcane rhizosphere soils of three cropping systems: Sugarcane only (S-only), sugarcane with peanut (S + P), and sugarcane + soybean (S + S) were sampled in tillering, elongation, and maturation stages from two different experimental fields. High-throughput sequencing technologies applied to assess the effects of different cropping systems on the structure of nitrogenase (nifH) gene communities. A total of 3818 OTUs (operational taxonomic units) were acquired from all soil samples. Intercropping systems noticeably increased the relative abundance ofProteobacteriain the tillering stage. The increased microbial diversity in the rhizosphere was mainly due to soil organic carbon and total soil N. In contrast, intercropping has no significant negative impact on microbial abundance, but sugarcane growth stages influence it significantly, and two bacteria (BradyrhizobiumandPseudacidovorax) showed significant shift during plant growth. The results provide insight into the microbial structure ofProteobacteriain the sugarcane legume-intercropping field, and how microbial community behaves in different growth stages. It can boost the microbial activity of the soil, and that could be a new strategy to stimulate soil fertility without causing any negative impact on crop production.

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