Loading and bioavailability of iron in cereal grains
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- 作者：Soumitra Paul (1)
Nusrat Ali (1)
Sailendra N. Sarkar (1)
Swapan K. Datta (1) (2)
Karabi Datta (1) - 关键词：Cereals ; Phytosiderophores ; Transporters ; Ferritin ; Biotechnology ; Iron
- 刊名：Plant Cell, Tissue and Organ Culture
- 出版年：2013
- 出版时间：June 2013
- 年：2013
- 卷：113
- 期：3
- 页码：363-373
- 全文大小：499KB
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Nusrat Ali (1)
Sailendra N. Sarkar (1)
Swapan K. Datta (1) (2)
Karabi Datta (1)
1. Plant Molecular Biology and Biotechnology Laboratory, Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, WB, India
2. Division of Crop Science, Indian Council of Agricultural Research (ICAR), Krishi Bhavan, Dr. Rajendra Prasad Road, New Delhi, 110114, India - ISSN：1573-5044
文摘
Cereal plants take up iron from the soil via a phytosiderophore-mediated chelation system. Following root absorption, iron is transported through the xylem and phloem of the plant with the help of a variety of efflux and influx transporters belonging to the Zrt Irt-like protein (ZIP) and yellow stripe-like (YSL) protein families. Iron-regulated transporter1, a member of the ZIP family, mobilises ferrous [Fe(II)] ions, while several YSL family members such as YSL2, YSL15 and YSL18 can transport both ferric [Fe(II)] and ferrous [F`III)] ions into developing grains via chelation with mugineic acid or its derivatives. The iron is accumulated largely in the outer aleurone layer and embryo of the grains, which are removed during milling, leaving behind consumable endosperm that contains a very low amount of iron. This review highlights the uptake, transport and loading mechanisms for iron in cereal grains and provides an overview of strategies adopted for developing highly iron-enriched grains.