摘要
土壤中有害重金属会抑制植物生长,严重影响作物产量和品质。植物根、茎、叶等部位的质膜和液泡膜上广泛分布着天然抗性相关巨噬细胞转运蛋白(NRAMP),其氨基酸序列在各物种间高度保守并具有类似的二级结构。这些蛋白调控着土壤重金属的吸收及其在植物体内的隔离、分配和向地上部分运输。NRAMP基因在调控植物对土壤重金属的吸收和耐受性方面起重要作用,基于近年来对NRAMP的研究,本文综述了该家族成员的结构特征以及在不同植物中对多种重金属元素的吸收、转运、积累和解毒作用,探讨了植物NRAMP基因影响土壤重金属吸收作用机理及调控途径,为进一步揭示植物NRAMP家族基因的作用机理和推动土壤环境改善提供参考。
Toxic heavy metals in soil may inhibit plant growth and seriously affect crop yield and quality.Natural resistance-associated macrophage transporter proteins(NRAMP)are widely distributed in the plasma and vacuolar membranes of roots,stems,and leaves.The amino acid sequences of NRAMP are highly conserved and have similar secondary structures among species.These proteins regulate the absorption of heavy metals in soil and their isolation,distribution,and transport to the stem from root.NRAMP gene plays an important role in regulating the absorption and tolerance of heavy metal in soil.Here,we reviewed the structural characteristics of NRAMP family members and their absorption,transport,accumulation,and detoxification effects on various heavy metals in different plant species.The mechanism and regulatory pathway of plant NRAMP gene affecting soil heavy metal absorption were discussed,which might provide a reference for further revealing the mechanism of plant NRAMP family and promoting the improvement of soil producing environment.
作者
马俊
李珊
吴亚胜
贺超兴
MA Jun;LI Shan;WU Yasheng;HE Chaoxing(School of Grain and Food&Pharmacy,Jiangsu Vocational College of Finance&Economics,Huai'an 223003,Jiangsu,China;Huai'an Chaimihe Agriculture Science and Technology Company,Huai'an 223006,Jiangsu,China;Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
出处
《应用生态学报》
北大核心
2025年第5期1567-1578,共12页
Chinese Journal of Applied Ecology
基金
国家特色蔬菜产业技术体系(CARS-24-B04)
江苏高校“青蓝工程”资助(苏教师函[2022]29号)
山东省重点研发项目(2022TZXD0026)
淮安市级基础研究计划项目(HAB2024073)
江苏财经职业技术学院科技类一般项目(2024XJY01)
农业农村部园艺作物生物学与种质创制重点实验室资助。
关键词
NRAMP基因
土壤有害重金属
植物吸收转运
调控途径
NRAMP gene
toxic heavy metals in soil
absorption and transport in plant
regulatory approach
