Os09g0375100

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The rice Os09g0375100 was reported as OsHSBP1 in 2012 [1] 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

References

  1. Rana RM, Dong S, Tang H, Ahmad F, Zhang H. Functional analysis of OsHSBP1 and OsHSBP2 revealed their involvement in the heat shock response in rice (Oryza sativa L.). J Exp Bot. 2012 Oct;63(16):6003-16. doi: 10.1093/jxb/ers245. Epub 2012 Sep 20. PubMed PMID: 22996677.


Structured Information