Os07g0497000

The rice Os07g0497000 was reported as OsCHR4 in 2012 by researchers from China.

Annotated Information

Gene Symbol

• Os07g0497000 <=> OsCHR4,Oschr4,CHR4

Function

• OsCHR4 is a rice chromatin-remodeling factor required for early chloroplast development in adaxial mesophyll

Phenotypic analysis

• The Oschr4 mutant exhibited defective chloroplasts in adaxial mesophyll, but not in abaxial mesophyll. Ultrastructural observations indicated that proplastid growth and/or thylakoid membrane formation in adaxial mesophyll cells was blocked in the Oschr4 mutant.
• The transcripts of some nuclear- and plastid-encoded genes required for early chloroplast development and photosynthesis were decreased in the adaxial albino mesophyll of the Oschr4 mutant.

Expression

• OsCHR4 was mainly expressed in the root mer- istem, flower, vascular bundle, and mesophyll cells by promoter::GUS analysis in transgenic rice.

Subcellular localization

• Subcellular localization analysis revealed that OsCHR4::GFP fusion protein was targeted to the nuclei.

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Labs working on this gene

• State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University, Hangzhou 310058, People’s Republic of China