Investigating OsHSBP1 Gene Expression in Relation to Drought and Heat Responses in Rice (Oryza sativa L.)

Date Received: 08-02-2025

Date Published: 21-02-2025

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Quyen, C., Huong, P., Hieu, D., Hoi, P., & Phuong, N. (2025). Investigating OsHSBP1 Gene Expression in Relation to Drought and Heat Responses in Rice (Oryza sativa L.). Vietnam Journal of Agricultural Sciences, 22(11). https://doi.org/10.1234/jq9q4727

Investigating OsHSBP1 Gene Expression in Relation to Drought and Heat Responses in Rice (Oryza sativa L.)

Cao Le Quyen , Phung Thi Thu Huong , Dam Quang Hieu , Pham Xuan Hoi , Nguyen Duy Phuong (*)

  • Tác giả liên hệ: phuongnd.bio@gmail.com
  • Keywords

    Gene expression, drought stress, heat stress, OsHSBP1

    Abstract


    The production of rice is significantly affected by adverse environmental conditions such as drought and heat. Heat shock proteins (HSPs) play a crucial role in mitigating stress tolerance responses associated with temperature and oxidation, thereby safeguarding cells and macromolecules from detrimental effects. The regulatory mechanism of HSP activity in some plant species involves the involvement of Heat Shock Factor Binding Protein (HSBP). This study aimed to investigate the functional activities and elucidate the stress response regulation mechanism of OsHSBP1 in rice. The expression pattern of this gene was analyzed under drought and heat stress conditions in two rice varieties, BC15 and OM54541. The OsHSBP1 expression increased at various time points during artificial heat and drought stress. The coding sequences of OsHSBP1 from these rice varieties were isolated and fully sequenced, revealing a gene segment of 237 base pairs in length. This segment encodes a polypeptide chain comprising 78 amino acids, including an α helix, exhibiting a similarity ranging from 59.8% to 97.4% homologous to HSBP proteins studied previously. These findings provide a foundation for exploring the functional role of OsHSBP1 to improve the drought and heat stress resistance of the major rice varieties such as BC15 and OM5451 through genetic engineering..

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