Journal
PLANT SIGNALING & BEHAVIOR
Volume 13, Issue 4, Pages -Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/15592324.2016.1161877
Keywords
Fe uptake; maize; mechanism; strategy I; strategy II
Categories
Funding
- National Special Program for GMO Development of China [2014ZX08003-002]
- National Natural Science Foundation of China [31101095]
- Graduate Student Innovation Foundation of Hebei Province [1099009]
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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.
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