Application of mixotrophic acidophiles for the bioremediation of cadmium-contaminated soils elevates cadmium removal, soil nutrient availability, and rice growth

文献类型： 外文期刊

第一作者： Yuan, Baoxing

作者： Yuan, Baoxing;Huang, Lihua;Zhu, Ping;Geng, Jibiao;Liu, Qianjin;Hao, Xiaodong;Liu, Xueduan;Liu, Hongwei;Zhu, Ping;Hao, Xiaodong;Bai, Lianyang;Jiang, Huidan;Xiao, Yunhua

作者机构：

关键词： Microbial extraction; Cd contamination; Mixotrophic acidophiles; Microbial community; Growth promoting effect

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：7.129； 五年影响因子：7.284 ）

ISSN： 0147-6513

年卷期： 2022 年 236 卷

页码：

收录情况： SCI

摘要： A major challenge in radically alleviating the threats posed by Cd-contaminated paddy fields to human health is to reduce the Cd levels in both soils and rice grains. In this study, the microbial extraction (ME) treatment using a mixotrophic acidophilic consortium was used for the bioremediation of Cd-contaminated soils. The results showed that the ME treatment enhanced the total Cd (40%) and diethylenetriamine pentaacetic acid-soluble Cd (DTPA-Cd, 64%) removal efficiencies in contaminated soils. In addition, ME treatment decreased the levels of Cd acid-soluble and reducible fractions and thereby reduced Cd uptake in rice tissues. Microbial community analysis indicated that the indigenous soil microbial diversity and composition were not changed after the ME treatment, but the relative abundance of functional microbes associated with Cd removal was improved. Notably, soil available nutrient levels were elevated upon inoculation with mixotrophic acidophiles, resulting in an increase in rice growth and grain weight. This study provides a scientific basis for the potential application and evaluation of ME treatment in the field for remediating Cd-contaminated paddy soils.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序