Is there a strategy I iron uptake mechanism in maize?

Suzhen Li; Xiaojin Zhou; Jingtang Chen; Rumei Chen

doi:10.1080/15592324.2016.1161877

Is there a strategy I iron uptake mechanism in maize?

Plant Signal Behav. 2018 Apr 3;13(4):e1161877. doi: 10.1080/15592324.2016.1161877. Epub 2018 Apr 16.

Authors

Suzhen Li^{1

2}, Xiaojin Zhou², Jingtang Chen¹, Rumei Chen²

Affiliations

¹ a Department of Agronomy , Agricultural University of Hebei/Hebei Sub-center of Chinese National Maize Improvement Center , Baoding , China.
² b Department of Crop Genomics & Genetic Improvement , Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing , China.

Abstract

Iron is a metal micronutrient that is essential for plant growth and development. Graminaceous and nongraminaceous plants have evolved different mechanisms to mediate Fe uptake. Generally, strategy I is used by nongraminaceous plants like Arabidopsis, while graminaceous plants, such as rice, barley, and maize, are considered to use strategy II Fe uptake. Upon the functional characterization of OsIRT1 and OsIRT2 in rice, it was suggested that rice, as an exceptional graminaceous plant, utilizes both strategy I and strategy II Fe uptake systems. Similarly, ZmIRT1 and ZmZIP3 were identified as functional zinc and iron transporters in the maize genome, along with the determination of several genes encoding Zn and Fe transporters, raising the possibility that strategy I Fe uptake also occurs in maize. This mini-review integrates previous reports and recent evidence to obtain a better understanding of the mechanisms of Fe uptake in maize.

Keywords: Fe uptake; maize; mechanism; strategy I; strategy II.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Gene Expression Regulation, Plant
Iron / metabolism*
Plant Proteins / metabolism*
Zea mays / metabolism*

Substances

Plant Proteins
Iron

Grants and funding

This work was supported by the National Special Program for GMO Development of China (grant number 2014ZX08003-002), the National Natural Science Foundation of China (grant number 31101095) and the Graduate Student Innovation Foundation of Hebei Province (grant number 1099009).