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Trends Plant Sci. 2008 Sep;13(9):464-73. doi: 10.1016/j.tplants.2008.06.005. Epub 2008 Aug 11.

Zinc biofortification of cereals: problems and solutions.

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1
Centre for Membrane Pumps in Cells and Disease - PUMPKIN, Department of Plant Biology and Biotechnology, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark. palmgren@life.ku.dk

Abstract

The goal of biofortification is to develop plants that have an increased content of bioavailable nutrients in their edible parts. Cereals serve as the main staple food for a large proportion of the world population but have the shortcoming, from a nutrition perspective, of being low in zinc and other essential nutrients. Major bottlenecks in plant biofortification appear to be the root-shoot barrier and--in cereals--the process of grain filling. New findings demonstrate that the root-shoot distribution of zinc is controlled mainly by heavy metal transporting P1B-ATPases and the metal tolerance protein (MTP) family. A greater understanding of zinc transport is important to improve crop quality and also to help alleviate accumulation of any toxic metals.

PMID:
18701340
DOI:
10.1016/j.tplants.2008.06.005
[Indexed for MEDLINE]
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