title: Is there a strategy I iron uptake mechanism in maize?
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.
authors.affiliation: a Department of Agronomy , Agricultural University of Hebei/Hebei Sub-center of Chinese National Maize Improvement Center , Baoding , China.|b Department of Crop Genomics & Genetic Improvement , Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing , China.
authors.forename: Suzhen
authors.initials: S
authors.lastname: Li
authors.affiliation: b Department of Crop Genomics & Genetic Improvement , Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing , China.
authors.forename: Xiaojin
authors.initials: X
authors.lastname: Zhou
authors.affiliation: a Department of Agronomy , Agricultural University of Hebei/Hebei Sub-center of Chinese National Maize Improvement Center , Baoding , China.
authors.forename: Jingtang
authors.initials: J
authors.lastname: Chen
authors.affiliation: b Department of Crop Genomics & Genetic Improvement , Biotechnology Research Institute, Chinese Academy of Agricultural Sciences , Beijing , China.
authors.forename: Rumei
authors.initials: R
authors.lastname: Chen
mesh_terms: D018506:Gene Expression Regulation, Plant; D007501:Iron / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*; D003313:Zea mays / Q000378:metabolism*
chemical_list: D010940:Plant Proteins; D007501:Iron
keywords: Fe uptake; maize; mechanism; strategy I; strategy II