Zhang Qian-Hui, Chen Yi-Qi, Li Zhen-Bang, Tan Xuan-Tong, Xin Guo-Rong, He Chun-Tao
State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Stress Biology, School of Agriculture and Biotechnology, Shenzhen Campus of Sun Yat-Sen University, Sun Yat-Sen University, Shenzhen City, 518107, China.
Instrumental Analysis & Research Center, Guangdong Province, Sun Yat-Sen University, Guangzhou City, 510275, China.
Adv Biotechnol (Singap). 2024 Dec 2;2(4):44. doi: 10.1007/s44307-024-00052-6.
Soil Cadmium (Cd) contamination is a worldwide problem with negative impacts on human health. Cultivating the Cd-Pollution Safety Cultivar (Cd-PSC) with lower Cd accumulation in edible parts of plants is an environmentally friendly approach to ensure food security with wide application prospects. Specialized mechanisms have been addressed for Cd accumulation in crops. This review provides an extensive generality of molecular regulation mechanisms involved in Cd absorption, transport, detoxification, and tolerance in plants, highlighting key aspects of rhizosphere, apoplast barrier, Cd uptake, transfer, and cellular repair strategies under Cd stress. Additionally, we summarize the possible approaches for lowering the Cd accumulation crops, including molecular-assistant breeding, applying chemical materials, and microbial strategy to decrease Cd content in edible parts and improve Cd tolerance of crops under Cd stress. This review would provide valuable insights for cultivating low Cd accumulated crop cultivars, ultimately contributing to food safety.
土壤镉（Cd）污染是一个全球性问题，对人类健康有负面影响。培育可食用部位镉积累量较低的镉污染安全品种（Cd-PSC）是确保粮食安全的一种环境友好型方法，具有广阔的应用前景。针对作物中镉的积累，已经提出了专门的机制。本综述广泛概述了植物中镉吸收、转运、解毒和耐受所涉及的分子调控机制，重点介绍了镉胁迫下根际、质外体屏障、镉吸收、转运和细胞修复策略的关键方面。此外，我们总结了降低作物镉积累的可能方法，包括分子辅助育种、应用化学物质和微生物策略，以降低可食用部位的镉含量，并提高作物在镉胁迫下的镉耐受性。本综述将为培育低镉积累作物品种提供有价值的见解，最终有助于食品安全。
