Tomoko Nozoye, Seiji Nagasaka, Takanori Kobayashi, Michiko Takahashi, Yuki Sato, Yoko Sato, Nobuyuki Uozumi, Hiromi Nakanishi, Naoko K Nishizawa
Eukaryotic organisms have developed diverse mechanisms for the acquisition of iron, which is required for their survival. Graminaceous plants use a chelation strategy. They secrete phytosiderophore compounds, which solubilize iron in the soil, and then take up the resulting iron-phytosiderophore complexes. Bacteria and mammals also secrete siderophores to acquire iron. Although phytosiderophore secretion is crucial for plant growth, its molecular mechanism remains unknown. Here, we show that the efflux of deoxymugineic acid, the primary phytosiderophore from rice and barley, involves the TOM1 and HvTOM1 genes, respectively...
February 18, 2011: Journal of Biological Chemistry