Alterations in the composition and metabolite profiles of the saline-alkali soil microbial community through biochar application
文献类型： 外文期刊
作者： Wang, Xiangling 1 ; Riaz, Muhammad 3 ; Babar, Saba 1 ; Eldesouki, Zeinab 1 ; Liu, Bo 4 ; Xia, Hao 1 ; Li, Yuxuan 1 ; Wang, Jiyuan 1 ; Xia, Xiaoyang 1 ; Jiang, Cuncang 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Resources & Environm, Microelement Res Ctr, Wuhan 430070, Hubei, Peoples R China
2.Shihezi Univ, Key Lab Oasis Ecoagr Xinjiang Prod & Construct Cor, Shihezi 832000, Xinjiang, Peoples R China
3.Zhongkai Univ Agr & Engn, Coll Resources & Environm, Guangzhou 510225, Peoples R China
4.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertilizer, Key Lab Fertilizat Agr Wastes, Minist Agr & Rural Affairs, Wuhan 430064, Hubei, Peoples R China
5.Ain Shams Univ, Dept Soil Sci, Fac Agr, Cairo 11241, Egypt
关键词： Biochar; Bacterial community; Cotton; Metabolic; Saline -alkali
期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.7； 五年影响因子：8.4 ）
ISSN： 0301-4797
年卷期： 2024 年 352 卷
页码：
收录情况： SCI
摘要： Saline-alkali soil poses significant chanllenges to sustainable development of agriculture. Although biochar is commonly used as a soil organic amendment, its microbial remediation mechanism on saline-alkali soil requires further confirmation. To address this, we conducted a pot experiment using cotton seedlings to explore the potential remediation mechanism of rice straw biochar (BC) at three different levels on saline-alkaline soil. The results showed that adding of 2% biochar greatly improved the quality of saline-alkaline soil by reducing pH levels, electrical conductivity (EC), and water-soluble ions. Moreover, biochar increased the soil organic matter (SOM), nutrient availability and extracellular enzyme activity. Interestingly, it also reduced soil salinity and salt content in various cotton plant tissues. Additionally, biochar had a notable impact on the composition of the microbial community, causing changes in soil metabolic pathways. Notably, the addition of biochar promoted the growth and metabolism of dominant salt-tolerant bacteria, such as Proteobacteria, Bacteroidota, Acidobacteriota, and Actinobacteriota. By enhancing the positive correlation between microorganisms and metabolites, biochar alleviated the inhibitory effect of salt ions on microorganisms. In conclusion, the incorporation of biochar significantly improves the soil microenvironment, reduces soil salinity, and shows promise in ameliorating saline-alkaline soil conditions.
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