Molecular mechanisms of zinc uptake and translocation in rice

• Published in: Plant and soil Vol. 361; no. 1-2; pp. 189 - 201
• Main Authors: Bashir, Khurram, Ishimaru, Yasuhiro, Nishizawa, Naoko K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Dordrecht Springer 01.12.2012; Springer Netherlands; Springer Nature B.V
• Subjects: Acid soils; Agronomy; Agronomy. Soil science and plant productions; Animal, plant and microbial ecology; Barley; Biological and medical sciences; Biomedical and Life Sciences; Biosynthesis; Carbohydrate metabolism; Carbohydrates; Crop production; Crop science; Ecology; Fundamental and applied biological sciences. Psychology; Gene expression regulation; Gene families; General agronomy. Plant production; Growth stage; Heavy metals; Human nutrition; Iron; Life Sciences; Lipid metabolism; Micronutrients; Molecular biology; Molecular modelling; Nucleic acids; Nutrition; Oryza sativa; Physiological aspects; Phytosiderophores; Plant Physiology; Plant roots; Plant Sciences; Plants; Protein transport; Proteins; Regular Article; Rice; Roots; Seeds; Shoots; Soil; Soil Science & Conservation; Soil-plant relationships. Soil fertility; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Transcription; Translocation; Zinc; Zinc compounds; Zinc in the body; Nicotianamine; ZIP transporters; DMA, Zn transport; Rice; Molecular process; Translocation; Molecular mechanism; Zinc; Transport process; α-Aminoacid; Group IIB metal; Absorption; Aminoacid; Azetidine derivatives; Zn transport; DMA; Soil plant relation; Transport
• ISSN: 0032-079X; 1573-5036
• DOI: 10.1007/s11104-012-1240-5

Background Zinc (Zn) is an essential micronutrient for plants and humans, involved in protein, nucleic acid, carbohydrate, and lipid metabolism. In addition, Zn is critical to the control of gene transcription and the coordination of other biological processes. Scope Zn deficiency is one of the most serious problems in plant and human nutrition. Like other plants, rice plant acquires Zn from soil and transports it to vegetative tissue as well as seed through a number of transporters which are strictly regulated. Several members of the $\underline{Z}$n-regulated transporters and $\underline{i}$ron (Fe)-regulated transporter-like $\underline{p}$rotein (ZIP) gene family have been characterized and shown to be involved in metal uptake and transport in rice. The most characterized members of this family in rice are OsZIP1, OsZIP3, OsZIP4, OsZIP5, and OsZIP8, however little is known about the expression of these genes through different growth stages of rice. Conclusion Here we discuss the molecular mechanisms of Zn transport in rice as an essential advance for understanding and manipulating the Zn absorption and translocation in rice. OsZIP1 and OsZIP3 seems important for Zn uptake from soil, OsZIP4, OsZIP5 and OsZIP8 for root to shoot translocation, while OsZIP4 and OsZIP8 seems particularly important for Zn transport to seed.