Os02g0306401

The rice Os02g0306401 was reported as naat1 in 2007 by researchers from the China.

Annotated Information

Gene Symbol

• Os02g0306401 <=> naat1

Function

• NAAT1 disruption of deoxymugineic acid biosynthesis can stimulate Fe(II) acquisition and increase iron accumulation in rice.

Expression

• The researchers identified a point mutation in a gene encoding nicotianamine aminotransferase (NAAT1), which was responsible for the mutant phenotype. Because of the loss of function of NAAT1, the mutant failed to produce deoxymugineic acid and could not absorb Fe(III) efficiently. In contrast, nicotianamine, the substrate for NAAT1, accumulated markedly in roots and shoots of the mutant. Microarray analysis showed that the expression of a number of the genes involved in Fe(II) acquisition was greatly stimulated in the naat1 mutant.

Labs working on this gene

• The State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University,Hangzhou 310058, China (L.C., F.W., H.S., F. Huang, L.Z., F. He, J.L., P.W.);
• Rothamsted Research, Harpenden,Hertfordshire AL5 2JQ, United Kingdom (F.-J.Z.);
• Research Institute for Bioresources, Okayama University, Kurashiki 710–0046, Japan (D.U., J.-F.M.)