Os02g0101500

The rice Os02g0101500 was reported as OsHPR1 in 2014 by researchers from China.

Annotated Information

Gene Symbol

• Os02g0101500 <=> OsHPR1,HPR1

Function

• The researchers constructed over-expression of the OsHPR1 gene and RNA interference plants of OsHPR1 and OsHPR2 genes in rice.
• The phenotypes of all transgenic lines were determined in ambient air and CO 2 -elevated air. The phenotype typical of photorespiration mutants were observed only where activity of both HPR1 and HPR2 were down-regulated in the same line.
• Double deletion of OsHPR1 and OsHPR2 genes significantly reduces plant growth under normal photorespiration condition
• These findings demonstrate that two hydroxypyruvate reductases encoded by OsHPR1 and OsHPR2 are involved in photorespiratory metabolism in rice.

Expression

• Results from RT-PCR, western-blot and enzyme assays showed that HPR1 activity changed significantly in corresponding transgenic lines without any effect on HPR2 activity, which is the same for HPR2.

Subcellular Localization

• In the present study, the subcellular localization of OsHPR1 protein was first predicted to be located in the peroxisome and cytosol respectively.
• In agreement with the prediction of HPR1 localization, the spots of HPR1-GFP and PTS1-CFP fusions were quite similar in the co-transformation protoplast, indicating the subcellular localization of HPR1 protein is in the peroxisome.

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Labs working on this gene

• State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, China,
• The Chinese University of Hong Kong Shenzhen Institute, Shenzhen, China,
• State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China