The toxicity of heavy metals and plant signaling facilitated by biochar application: Implications for stress mitigation and crop production

文献类型： 外文期刊

第一作者： Khan, Zaid

作者： Khan, Zaid;Fan, Xianting;Shen, Hong;Khan, Mohammad Nauman;Zhang, Kangkang;Khan, Muhammad Ayoub;Fu, Youqiang;Fu, Youqiang;Fu, Youqiang

作者机构：

关键词： Heavy metals; Biochar; Soil; Antioxidants; ROS; Plant growth

期刊名称：CHEMOSPHERE （ 影响因子：8.943； 五年影响因子：8.52 ）

ISSN： 0045-6535

年卷期： 2022 年 308 卷

页码：

收录情况： SCI

摘要： Heavy metals (HMs) accumulation in soil poses a severe threat worldwide for soil, plants, and humans. The accumulation of HMs in soil and uptake by plants leads to disrupt physiological and biochemical metabolisms. As a potential and sustainable soil amendment, biochar has attained huge attention to reduce HMs toxicity in soil and improve plant growth influenced by HMs stress. Despite an array of research studies, there is a lack of knowledge on how biochar interacts with HMs, moderate plant defence system, induce HMs stress signals pathways and promote plant growth. At first, the review highlights the possible effects of HMs on soil and plant and their consequences on plant signaling network. Secondly, the biochar's impact on soil physiochemical properties and the sorption of HMs on biochar surface through direct and indirect mechanisms are reviewed. Finally, the review shows the key roles of biochar in soil improvement to enhance plant growth and signaling response to HMs by enhancing the activities of antioxidants and reducing chlorophyll injury, reactive oxygen species (ROS) accumulation, and cell membrane degradation under HMs stress. However, future studies are needed to evaluate the role of biochar in diverse climatic conditions as well as the long-term effects of biochar on HMs persistency in soil and crop productivity. This review will provide new avenues for future studies to address and quantify the advancement in biochar's role in alleviating plant's HMs stress on a sustainable basis.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序