Beneficial shift of rhizosphere soil nutrients and metabolites under a sugarcane/peanut intercropping system

作者：Xiumei Tang, HE Yong-lin, Zheng Zhang, Haining Wu, Liangqiong He, Jing Jiang, Weiwei Meng, Zhipeng Huang, Faqian Xiong, Jing Liu, Ruichun Zhong, Zhuqiang Han, Shubo Wan, Ronghua Tang · 发表于：Frontiers in Plant Science · 年份：2022 · DOI：10.3389/fpls.2022.1018727 · 被引用次数：56 · 研究领域：Agronomic Practices and Intercropping Systems、Legume Nitrogen Fixing Symbiosis、Soil Carbon and Nitrogen Dynamics

Intercropping systems have been studied as a sustainable agricultural planting pattern to increase soil quality and crop yields. However, the relationships between metabolites and soil physicochemical properties remain poorly understood under sugarcane/peanut intercropping system. Thus, we determined the rhizosphere soil physicochemical properties, and analyzed rhizosphere soil metabolites and root metabolites by metabolomics method under monoculture and intercropping patterns of sugarcane and peanut. The results showed that pH, the contents of total phosphorus (P), total potassium (K), available nitrogen (N), available phosphorus (P), and available potassium (K) were higher in rhizosphere soil of intercropping peanut than monoculture peanut, and the content of total P was higher in rhizosphere soil of intercropping sugarcane than monoculture sugarcane. Sugarcane/peanut intercropping also significantly increased the activities of acid phosphatase and urease in rhizosphere soil. The metabolomics results showed that 32 metabolites, mainly organic acids and their derivatives (25.00%), nucleotides and their metabolites (18.75%), were detected in root and rhizosphere soil samples. In the MP-S (rhizosphere soil of monoculture peanut) vs. IP-S (rhizosphere soil of intercropping peanut) comparison, 47 differential metabolites (42 upregulated) were screened, including glycerolipids (19.15%), organic acids and their derivatives (17.89%), and amino acids and their metabolites (12.77%). ...