OsNramp5基因变异影响水稻重要农艺性状的研究进展

Research Progress on the Effects of OsNramp5 Mutation on Important Agronomic Traits in Rice

筛选和培育镉(Cd)低积累水稻品种是解决稻米镉污染问题最经济、有效的办法。现有研究表明OsNramp5是介导水稻Cd吸收最重要的基因,其功能缺失后,水稻籽粒Cd含量极显著下降,但同时会影响水稻必需元素锰(Mn)的吸收,而在前人关于OsNramp5变异影响水稻生长发育的研究中,结论并不一致。系统了解OsNramp5基因变异对水稻重要农艺性状的影响有助于推动低Cd优质水稻新品种的培育。本文重点对OsNramp5基因变异对水稻中金属离子的含量,水稻的生长发育、产量性状及米质的影响进行了综述,以期为利用OsNramp5基因突变选育低Cd积累水稻品种提供参考。

Developing low-cadmium(Cd)rice cultivars is the most economical and effective way to solve the problem of“Cadmium Rice”.Previous studies have shown that OsNramp5 is the major transport gene for Cd uptake in rice.The functional deficiency of OsNramp5 leads to a significant decrease in the content of Cd in rice grains,and the uptake of manganese(Mn)is also affected.However,in previous studies on the effect of OsNramp5 variation on rice growth and development,the conclusions were inconsistent.The systematic understanding of the effects of OsNramp5 mutation on important agronomic traits in rice will promote the development of new rice cultivars with low-Cd and high-quality.This manuscript focuses on the effects of OsNramp5 mutation on the content of metal ions,growth and development,yield and quality of rice,so as to provide scientific guidance for the breeding of new rice cultivars with low Cd accumulation by OsNramp5 mutation.