Iron Uptake, Translocation, and Regulation in Higher Plants

Kobayashi, T. and Nishizawa, N. K. (2012) Iron Uptake, Translocation, and Regulation in Higher Plants. Annual Review of Plant Biology, 63. pp. 131-152.

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Iron is essential for the survival and proliferation of all plants. Higher plants have developed two distinct strategies to acquire iron, which is only slightly soluble, from the rhizosphere: the reduction strategy of nongraminaceous plants and the chelation strategy of graminaceous plants. Key molecular components—including transporters, enzymes, and chelators—have been clarified for both strategies, and many of these components are now thought to also function inside the plant to facilitate internal iron transport. Transporters for intracellular iron trafficking are also being clarified. A majority of genes encoding these components are transcriptionally regulated in response to iron availability. Recent research has uncovered central transcription factors, cis-acting elements, and molecular mechanisms regulating these genes. Manipulation of these molecular components has produced transgenic crops with enhanced tolerance to iron deficiency or with increased iron content in the edible parts.

Item Type: Article
Additional Information: This research was supported by a Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science, and Technology of Japan; Core Research for Evolutional Science and Technology (CREST); the Japan Science and Technology Agency ( JST); the Program for Promotion of Basic Research Activities for Innovative Biosciences (PROBRAIN); and a grant from the Ministry of Agriculture, Forestry, and Fisheries of Japan (Genomics for Agricultural Innovation, GMB0001).
Uncontrolled Keywords: gene regulation, iron deficiency, mugineic acid family phytosiderophores, transcription factor, transporter
Author Affiliation: Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa 921-8836, Japan
Subjects: Crop Improvement
Divisions: General
Depositing User: Mr Siva Shankar
Date Deposited: 30 Jul 2012 11:51
Last Modified: 30 Jul 2012 11:51
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