Os09g0375100

The rice Os09g0375100 was reported as OsHSBP1 in 2012 by researchers from China and Pakistan.

Annotated Information

Gene Symbol

• Os09g0375100 <=> OsHSBP1,HSBP1

Function

• HSF binding protein (HSBP) is reported to modulate the function of HSF by binding to their trimer and hence to regulate HSR.
• OsHSBP1 and OsHSBP2 play important role in the regulation of the HSR and seed development of rice.

Phenotypic analysis

• Both OsHSBP1 and OsHSBP2 were also important for seed development, as their knock-down lines were associated with significant seed abortion.
• The thermotolerance assay revealed that OsHSBP1 and OsHSBP2 are negative regulators of HSR and involved in acquired thermotolerance but not in basal thermotolerance since their over-expression transgenic lines pre-heated at sublethal temperature, showed significantly decreased seedling survival after heat shock treatment.
• Furthermore, antioxidant activity and gene expression of catalase and peroxidase was significantly increased in knock-down transgenic seedlings of OsHSBP1 and OsHSBP2 after heat stress compared with the wild type.

Expression

• Both OsHSBP1 and OsHSBP2 expressed ubiquitously in all tissues under normal growth conditions while their expression levels were significantly increased during recovery after heat shock treatment.

Subcellular localization

• Subcellular localization analysis revealed the cytosol-nuclear localization of both OsHSBP1 and OsHSBP2 in onion epidermal cells.

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Labs working on this gene

• State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
• Department of Plant Breeding and Genetics, PMAS-Arid Agriculture University Rawalpindi, Pakistan