Influences of arbuscular mycorrhizal fungi on crop growth and potentially toxic element accumulation in contaminated soils: A meta-analysis

IF 11.4 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Critical Reviews in Environmental Science and Technology Pub Date : 2023-03-09 DOI:10.1080/10643389.2023.2183700

Li Chen, Fayuan Wang, Zhiqing Zhang, Herong Chao, Haoran He, Weifang Hu, Yifeng Zeng, Chengjiao Duan, Ji Liu, Linchuan Fang

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引用次数: 15

Abstract

Abstract Soil pollution from potentially toxic elements (PTEs) is a serious environmental issue worldwide that affects agricultural safety and human health. Arbuscular mycorrhizal fungi (AMF), as ecosystem engineers, can alleviate PTE toxicity in crop plants. However, the comprehensive effects of AMF on crop performance in PTE-contaminated soils have not yet been recognized globally. Here, a meta-analysis of 153 studies with 3213 individual observations was conducted to evaluate the effects of AMF on the growth and PTE accumulation of five staple crops (wheat, rice, maize, soybean, and sorghum) in contaminated soils. Our results demonstrated that AMF had strong positive effects on the shoot and root biomass. This is because AMF can effectively alleviate oxidative damage induced by PTEs by stimulating photosynthesis, promoting nutrition, and activating non-enzymatic and enzymatic defense systems in crop plants. AMF also decreased shoot PTE accumulation by 23.6% and increased root PTE accumulation by 0.8%, demonstrating that AMF effectively inhibited the PTE transfer and uptake by crop shoot. Meanwhile, AMF-mediated effects on shoot PTE accumulation were weaker in soils with pH > 7.5. Overall, this global survey has essential implications on the ability of AMF to enhance crop performance in PTE-contaminated soils and provides insights into the guidelines for safe agricultural production worldwide. Graphical abstract

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丛枝菌根真菌对作物生长和污染土壤中潜在有毒元素积累的影响：荟萃分析

摘要潜在有毒元素对土壤的污染是世界范围内一个严重的环境问题，影响着农业安全和人类健康。丛枝菌根真菌（AMF）作为生态系统工程师，可以减轻作物PTE的毒性。然而，AMF对PTE污染土壤中作物生长性能的综合影响尚未得到全球认可。在此，对153项研究进行了荟萃分析，共有3213项个体观察，以评估AMF对五种主要作物（小麦、水稻、玉米、大豆和高粱）在污染土壤中生长和PTE积累的影响。结果表明，AMF对地上部和根系生物量具有较强的正向影响。这是因为AMF可以通过刺激作物光合作用、促进营养以及激活非酶和酶防御系统，有效减轻PTEs诱导的氧化损伤。AMF还使地上部PTE积累减少23.6%，使根部PTE积累增加0.8%，表明AMF有效抑制了PTE的转移和吸收。同时，AMF介导的对芽PTE积累的影响在pH>7.5的土壤中较弱。总的来说，这项全球调查对AMF在PTE污染土壤中提高作物性能的能力具有重要意义，并为全球农业安全生产指南提供了见解。图形摘要

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来源期刊

Critical Reviews in Environmental Science and Technology 环境科学-环境科学

CiteScore

27.30

自引率

1.60%

发文量

审稿时长

2 months

期刊介绍： Two of the most pressing global challenges of our era involve understanding and addressing the multitude of environmental problems we face. In order to tackle them effectively, it is essential to devise logical strategies and methods for their control. Critical Reviews in Environmental Science and Technology serves as a valuable international platform for the comprehensive assessment of current knowledge across a wide range of environmental science topics. Environmental science is a field that encompasses the intricate and fluid interactions between various scientific disciplines. These include earth and agricultural sciences, chemistry, biology, medicine, and engineering. Furthermore, new disciplines such as environmental toxicology and risk assessment have emerged in response to the increasing complexity of environmental challenges. The purpose of Critical Reviews in Environmental Science and Technology is to provide a space for critical analysis and evaluation of existing knowledge in environmental science. By doing so, it encourages the advancement of our understanding and the development of effective solutions. This journal plays a crucial role in fostering international cooperation and collaboration in addressing the pressing environmental issues of our time.