OsHSP 17.9, a Small Heat Shock Protein, Confers Improved Productivity and Tolerance to High Temperature and Salinity in a Natural Paddy Field in Transgenic Rice Plants

Jeong-Mi Do, Hee-Jin Kim, Sun-Young Shin, Seong-Im Park, Jin-Ju Kim and Ho-Sung Yoon ()
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Jeong-Mi Do: Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
Hee-Jin Kim: Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
Sun-Young Shin: Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
Seong-Im Park: Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
Jin-Ju Kim: Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
Ho-Sung Yoon: Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu 41566, Republic of Korea

Agriculture, 2023, vol. 13, issue 5, 1-14

Abstract: Various abiotic stress factors, such as high temperatures and salinity, have a significant impact on the development and growth of crop plants and ultimately impact crop yield. Previous studies have reported that overexpression of heat-shock-protein (HSP) genes in transgenic plants can enhance stress tolerance under controlled conditions in laboratories and greenhouses. Despite the significance of multiple environmental stressors on plants in natural paddy fields, there is still a lack of research regarding the contribution of HSP genes to stress tolerance and crop yield. In this study, we cloned and characterized the function of OsHSP 17.9, an HSP gene from Oryza sativa , in rice plants grown under diverse conditions. Our results showed that overexpressing OsHSP 17.9 in rice plants enhanced the activity of antioxidant enzymes under high-temperature and salinity stresses. Moreover, transgenic rice plants overexpressing OsHSP 17.9 exhibited significantly improved adaptability after transplantation from greenhouses to natural paddy fields. In particular, OsHSP 17.9-overexpressing transgenic rice plants established improved agronomic traits and increased grain yields even under unfavorable natural-paddy-field conditions. These results suggest that OsHSP 17.9 transgenic plants can be a promising strategy for cultivating crops in adverse environmental conditions.

Keywords: heat shock protein; overexpression; Oryza sativa; ROS; paddy field; agronomic traits (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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