Os08g0566600

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The rice Os08g0566600 was report as proton gradient regulation 5 ,which is involved in electron flow in rice Photosystem I. It is essential for photoprotection.

Annotated Information

Function

PGR5(PROTON GRADIENT REGULATION 5)gene is required for Rice photosystem I(PSI) cyclic electron transpor.The fucntions of PGR5 as follow:

1.PGR5-dependent PSI cyclic electron transporthelps to restore the balance of the oxidation of chloroplasts.

2.PGR5 plays an key role in maintaining reduction capability the iron oxide-dependent protein bodies quinone when the rice chloroplast damage.

3.PGR5 is required for ferredoxin (Fd)-dependent plastoquinone (PQ) reduction in ruptured chloroplasts of rice.

Figure 1(A) Schematic model of Fd-dependent PQ reduction in ruptured chloroplasts.

Figure 2 (B) Fd-dependent PQ reduction activity in ruptured chloroplasts isolated from various lines.

4.CO(2) fixation and growth rate are very robust in the face of alterations in the fundamental reactions of photosynthesis under constant light conditions in rice.

Expression

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Evolution

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Labs working on this gene

1.Department of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto, 606-8502 Japan

2.CREST, Japan Science and Technology Agency, Chiyoda-ku, Tokyo, 102-0076 Japan

3.Department of Applied Plant Science, Graduate School of Agricultural Science, Tohoku University, Sendai, 981-8555 Japan

4.National Institute of Agrobiological Sciences, Tsukuba, Ibaraki, 305-8602 Japan

References

1. PGR5-Dependent Cyclic Electron Transport Around PSI Contributes to the Redox Homeostasis in Chloroplasts Rather Than CO2 Fixation and Biomass Production in Rice Plant and Cell Physiology, 2012, 53(12): 2117-2126