Microbial network-driven remediation of saline-alkali soils by salt-tolerant plants

作者：Yushuang Cui, Zhifang Ning, Menglu Li, Xue Qin, Xin Yue, Xiaobo Chen, Changxiong Zhu, Hongyong Sun, Yali Huang · 发表于：Frontiers in Microbiology · 年份：2025 · DOI：10.3389/fmicb.2025.1565399 · 被引用次数：20 · 研究领域：Plant-Microbe Interactions and Immunity、Microbial Community Ecology and Physiology

Salt-tolerant plants (STPs) play an important role in saline-alkali soil remediation, but their interaction with soil microorganisms remain incompletely elucidated. This study explored the effects on microbial community structure, function, and soil quality in saline-alkali land of four treatments: no plant (CK), Triticum aestivum L. (TA), Tamarix chinensis Lour. (TC), and Hibiscus moscheutos Linn. (HM). The results indicated that the planting of TC, TA, and HM effectively reduced soil electrical conductivity (EC) by 82.9, 88.3, and 86.2%, respectively. TC and TA significantly decreased the pH from 8.79 to 8.35 and 8.06, respectively, ( p < 0.05). Moreover, the nutrient content and enzymatic activities were enhanced. Notably, TA exhibited the most significant soil nutrient improvement. STPs also substantially altered the microbial community structure and function, with TC increasing bacterial richness (ACE and Chao1 indices) compared to other treatments ( p < 0.05). Moreover, TA significantly promoted the relative abundance of unclassified_Gemmatimonadaceae , unclassified_Vicinamibacterales , and Mortierella ( p < 0.05). A major innovation of this study is using network analysis to explore microbial interactions, revealing how STPs enhance microbial network complexity. This approach identified Sphingomonas as a key taxon in TA soils, shedding light on the microbial dynamics of soil remediation. Additionally, partial least squares path model (PLS-PM) showe...