Biotechnology Bulletin ›› 2022, Vol. 38 ›› Issue (4): 29-43.doi: 10.13560/j.cnki.biotech.bull.1985.2020-1484

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Research Progress in Absorption,Transportation and Accumulation Mechanism of Zinc in Rice

XUE Xin-yue(), YU Xue-ran, LIU Xiao-gang, MA Jia-xin, TIAN Lei, LI Pei-fu()   

  1. Agricultural College of Ningxia University,Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia,Yinchuan 750021
  • Received:2020-12-03 Online:2022-04-26 Published:2022-05-06
  • Contact: LI Pei-fu E-mail:506843023@qq.com;peifuli@163.com

Abstract:

Zinc is one of the micronutrient elements necessary for the normal growth and development in rice,and is the auxiliary factor in biosynthesis of auxin,chlorophyll and other chemicals. Zinc deficiency can lead to drawf,slow growth of new leaves,chlorosis and white midrib in leaves,late and less heading,which seriously affects the yield. In addition,excessive zinc may cause toxic effects on rice. Therefore,it is of great significance to study the mechanisms of zinc absorption,transportation and accumulation in rice and to biofortificate the enrichment of zinc in rice grain by modern biotechnology. Based on the recent reports in domestic and abroad,this paper briefly reviewed the physiological function of zinc in rice,zinc absorption pathways in different tissues of rice,and factors affecting the absorption and accumulation of zinc. Further this paper sorted and summarized the types,structures and functions of zinc transporters,and their family members identified in rice in recent years,aiming to provide references for further understanding the zinc transport system and its regulatory mechanism in rice.

Key words: rice, zinc, absorption and transport, zinc transporter, biofortification