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Plant studies reveal how, where seeds store iron

tructure, which funded the research. "The discovery that iron localizes in specific parts of a seed opens the possibility of developing seed crops such as grains and beans with increased content of this important nutrient."

The findings reveal how essential it is to look beyond ferritin to understand how iron is stored by plants. The researchers say the stored iron in the vacuole is a key source of iron for developing seedlings. Seedlings that do not express the VIT1 protein grow poorly when iron is limited.

In addition to funding from the National Science Foundation, the study was also supported by the National Institutes of Health. The imaging was carried out at the Department of Energy's National Synchrotron Light Source at Brookhaven National Laboratory.

Other authors of the paper include Sun A Kim and Tracy Punshon, both of Dartmouth, Antonio Lanzirotti of the University of Chicago, Liangtao Li and Jerry Kaplan of the University of Utah School of Medicine, Jos Alonso with North Carolina State University, and Joseph Ecker with the Salk Institute for Biological Studies.


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Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
2-Nov-2006


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