Nutrition Physiology of Iron (Fe) in Plants: Research Progress

doi:10.11924/j.issn.1000-6850.casb2021-0187

Abstract

Abstract:

Iron (Fe) is the earliest discovered and most abundant essential microelement in plants, which is involved in many physiological processes and metabolic pathways, Fe deficiency will seriously affect the growth, development, yield and quality of plants. Fe in plant-derived food is the main source for animal and human to obtain Fe, and insufficient Fe uptake can damage their health. In order to fully understand the metabolic physiology of Fe in plants, and promote the cultivation of iron-rich plants and the development of iron-rich food, in this review, the contents, forms and proportions of Fe in soil and plants were summarized, the distribution and function of Fe in plants were concluded, the different efficient absorption strategies of plants in small amount of soluble Fe environment were compared, and the regulation mechanisms of Fe transport in cells and long-distance in plants were analyzed. Based on the above, some research prospects were discussed in view of the previous research, it is suggested that more attention should be paid to the differences and molecular mechanisms of Fe metabolic pathways among different plant species, the Nramp family genes regulating approach of the docytotic mechanism of Fe deficiency in plants, the oxidation precipitation and reduction release mechanisms of ferritin (Fer) in the plastids, and the biofortification measures for increasing Fe content and bioavailability in plants.

Key words: plant, iron, uptake, transport, physiology

CLC Number:

S311

ZHANG Wenjing, CHENG Jianfeng, LIU Jie, HE Ping, WANG Zixuan, ZHANG Zujian, JIANG Haiyan. Nutrition Physiology of Iron (Fe) in Plants: Research Progress[J]. Chinese Agricultural Science Bulletin, 2021, 37(36): 103-110.

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