Small auxin-up RNA gene OsSAUR33 promotes seed aging tolerance in riceOA
Seed aging tolerance during storage is generally an important trait for crop production, yet the role of small auxin-up RNA genes in conferring seed aging tolerance is largely unknown in rice. In this study, one small auxin-up RNA gene, OsSAUR33, was found to be involved in the regulation of seed aging tolerance in rice. The expression of OsSAUR33 was significantly induced in aged seeds compared with unaged seeds during the seed germination phase. Accordingly, the disruption of OsSAUR33 significantly reduced seed vigor compared to the wild type(WT) in response to natural storage or artificial aging treatments. The rice OsSAUR33 gene promotes the vigor of aged seeds by enhancing their reactive oxygen species(ROS) level during seed germination, and the accumulation of ROS was significantly delayed in the aged seeds of Ossaur33 mutants in comparison with WT during seed germination. Hydrogen peroxide(H_(2)O_(2)) treatments promoted the vigor of aged seeds in various rice varieties. Our results provide timely theoretical and technical insights for the trait improvement of seed aging tolerance in rice.
Shan Sun;Wenjun Li;Yanfen Fang;Qianqian Huang;Zhibo Huang;Chengjing Wang;Jia Zhao;Yongqi He;Zhoufei Wang
Laboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,ChinaSchool of Agriculture,Yunnan University,Kunming 650091,ChinaLaboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,ChinaLaboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,ChinaLaboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,ChinaLaboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,ChinaLaboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,ChinaLaboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,ChinaLaboratory of Seed Science and Technology,South China Agricultural University/Guangdong Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,Guangzhou 510642,China
农业科学
auxin-responsive genereactive oxygen speciesriceseed agingseed vigor
《Journal of Integrative Agriculture》 2025 (1)
P.61-71,11
supported by the Key-Area Research and Development Program of Guangdong Province,China(2022B0202060006)the National Natural Science Foundation of China(32201838,32272157,32172052,and 31971995)the Natural Science Foundation of Guangdong Province,China(2023A1515012052)the Project of Sanya Yazhou Bay Science and Technology City,China(SCKJJYRC-2022-87)the Double First-class Discipline Promotion Project,China(2021B10564001)
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