Os12g0188700

The rice Os12g0188700 was reported as Ostrxm in 2008 by researchers from the Korea.

Annotated Information

Gene Symbol

• Os12g0188700 <=> Ostrxm

Function

• The pleiotropic effects of Ostrxm RNAi suggest that Ostrxm plays an important role in the redox regulation of chloroplast target proteins involved in diverse physiological functions.

Mutant

• RNA interference (RNAi) of Ostrxm resulted in rice plants with developmental defects, including semidwarfism, pale-green leaves, abnormal chloroplast structure, and reduced carotenoid and chlorophyll content. Ostrxm RNAi plants showed remarkably decreased Fv/Fm values under high irradiance conditions (1,000 mmol m22 s21) with delayed recovery. Two-dimensional electrophoresis and matrix-assisted laser-desorption/ionization time-of-flight analysis showed that the levels of several chloroplast proteins critical for photosynthesis and biogenesis were significantly decreased in Ostrxm RNAi plants. Furthermore, 2-Cys peroxiredoxin, a known target of thioredoxin, was present in oxidized forms, and hydrogen peroxide levels were increased in Ostrxm RNAi plants.

Labs working on this gene

• Division of Applied Life Science (BK21 Program), EB-NCRC and Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju 660–701, Korea (Y.H.C., J.C.M., J.H.P., W.I.F., H.H.J.,J.R.L., Y.M.L., S.T.K., C.O.L., J.-Y.K., D.-J.Y., K.O.L., S.Y.L.);
• Department of Molecular Biology, Pusan National University, Busan 609–735, Korea (H.-S.K., I.S.Z, C.-H.L.);
• School of Life Sciences and Biotechnology, Korea University, Seoul 136–701, Korea (Y.-Y.C.)