Article
Localization of iron in Arabidopsis seed requires the vacuolar membrane transporter VIT1.
Science (New York, N.Y.) - 24 Nov 2006
Kim Sun A, Punshon Tracy, Lanzirotti Antonio, Li Liangtao, Alonso José M, Ecker Joseph R, Kaplan Jerry, Guerinot Mary Lou
Abstract excerpt
Iron deficiency is a major human nutritional problem wherever plant-based diets are common. Using synchrotron x-ray fluorescence microtomography to directly visualize iron in Arabidopsis seeds, we show that iron is localized primarily to the provascular strands of the embryo. This localization is completely abolished when the vacuolar iron uptake transporter VIT1 is disrupted. Vacuolar iron storage is also...
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