文献类型: 外文期刊
作者: Xu, Ending 1 ; Liu, Yuanyuan 2 ; Gu, Dongfang 1 ; Zhan, Xinchun 1 ; Li, Jiyu 3 ; Zhou, Kunneng 1 ; Zhang, Peijiang 1 ; Zou, Yu 1 ;
作者机构: 1.Anhui Acad Agr Sci, Rice Res Inst, Anhui Prov Key Lab Rice Germplasm Innovat & Mol Im, Hefei 230031, Peoples R China
2.Nanjing Agr Univ, Coll Life Sci, Dept Biochem & Mol Biol, Nanjing 210095, Peoples R China
3.Anhui Acad Agr Sci, Inst Hort Res, Hefei 230031, Peoples R China
关键词: copper; deficiency and phytotoxicity; transporter; transcriptional regulation; homeostasis
期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:4.9; 五年影响因子:5.6 )
ISSN: 1661-6596
年卷期: 2024 年 25 卷 13 期
页码:
收录情况: SCI
摘要: Copper (Cu) is an essential nutrient for plant growth and development. This metal serves as a constituent element or enzyme cofactor that participates in many biochemical pathways and plays a key role in photosynthesis, respiration, ethylene sensing, and antioxidant systems. The physiological significance of Cu uptake and compartmentalization in plants has been underestimated, despite the importance of Cu in cellular metabolic processes. As a micronutrient, Cu has low cellular requirements in plants. However, its bioavailability may be significantly reduced in alkaline or organic matter-rich soils. Cu deficiency is a severe and widespread nutritional disorder that affects plants. In contrast, excessive levels of available Cu in soil can inhibit plant photosynthesis and induce cellular oxidative stress. This can affect plant productivity and potentially pose serious health risks to humans via bioaccumulation in the food chain. Plants have evolved mechanisms to strictly regulate Cu uptake, transport, and cellular homeostasis during long-term environmental adaptation. This review provides a comprehensive overview of the diverse functions of Cu chelators, chaperones, and transporters involved in Cu homeostasis and their regulatory mechanisms in plant responses to varying Cu availability conditions. Finally, we identified that future research needs to enhance our understanding of the mechanisms regulating Cu deficiency or stress in plants. This will pave the way for improving the Cu utilization efficiency and/or Cu tolerance of crops grown in alkaline or Cu-contaminated soils.
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