Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 73, Issue 1, Pages 50-67Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erab444
Keywords
Apoplast; arbuscular mycorrhizal fungi; immobilization; rice; symplast; toxic metal
Categories
Funding
- Department of Education of Guangdong Province [2019KTSCX159, 2019KZDXM028, 2020KCXTD006]
- National Natural Science Foundation of China [42077298]
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control [2017B030301012]
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control
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This study focuses on the impact of AMF on arsenic and cadmium accumulation in rice and the mechanisms involved, evaluates and discusses the important role of AMF in the soil-rice-AMF system, proposes future research directions and a potential strategy for AMF application in rice fields.
Rice polluted by metal(loid)s, especially arsenic (As) and cadmium (Cd), imposes serious health risks. Numerous studies have demonstrated that the obligate plant symbionts arbuscular mycorrhizal fungi (AMF) can reduce As and Cd concentrations in rice. The behaviours of metal(loid)s in the soil-rice-AMF system are of significant interest for scientists in the fields of plant biology, microbiology, agriculture, and environmental science. We review the mechanisms of As and Cd accumulation in rice with and without the involvement of AMF. In the context of the soil-rice-AMF system, we assess and discuss the role of AMF in affecting soil ion mobility, chemical forms, transport pathways (including the symplast and apoplast), and genotype variation. A potential strategy for AMF application in rice fields is considered, followed by future research directions to improve theoretical understanding and encourage field application.
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