文献类型： 外文期刊
作者： Chen, Feihe 1 ; Zhang, Haomin 1 ; Li, Hong 1 ; Lian, Ling 1 ; Wei, Yidong 1 ; Lin, Yuelong 1 ; Wang, Lanning 1 ; He, Wei 1 ; Cai, Qiuhua 1 ; Xie, Hongguang 1 ; Zhang, Hua 2 ; Zhang, Jianfu 1 ;
作者机构： 1.Fujian Acad Agr Sci, Rice Res Inst, Fuzhou 350018, Peoples R China
2.Fujian Agr & Forestry Univ, Coll Agr, Fuzhou 350002, Peoples R China
3.Minist Agr & Affairs, State Key Lab Ecol Pest Control Fujian & Taiwan Cr, Key Lab Germplasm Innovat & Mol Breeding Hybrid Ri, Fuzhou, Peoples R China
4.Incubator Natl Key Lab Germplasm Innovat & Mol Bre, Fuzhou 350003, Peoples R China
5.Minist Sci & Technol, Natl Rice Improvement Ctr China, Fujian Engn Lab Crop Mol Breeding, Fujian Key Lab Rice Mol Breeding,Fuzhou Branch, Fuzhou 350003, Peoples R China
关键词： IPA1; Rice (Oryza sativa L; ); Drought stress; SNAC1; Reactive oxygen species (ROS)
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）
ISSN： 1471-2229
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： Drought is a major abiotic stress to rice (Oryza sativa) during growth. Ideal Plant Architecture (IPA1), the first cloned gene controlling the ideal plant type in rice, has been reported to function in both ideal rice plant architecture and biotic resistance. Here, we report that the IPA1/OsSPL14, encoding a transcriptional factor, positively regulates drought tolerance in rice. The IPA1 is constitutively expressed and regulated by H2O2, abscisic acid, NaCl and polyethylene glycol 6000 treatments in rice. Furthermore, the IPA1-knockout plants showed much greater accumulation of H2O2 as measured by 3,3 '-diaminobenzidine staining in leaves compared with WT plants. Yeast one-hybrid, dual-luciferase and electrophoretic mobility shift assays indicated that the IPA1 directly activates the promoter of SNAC1. Expression of SNAC1 is significantly down-regulated in IPA1 knockout plants. Further investigation indicated that the IPA1 plays a positive role in drought-stress tolerance by inducing reactive oxygen species scavenging in rice. Together, these findings indicated that the IPA1 played important roles in drought tolerance by regulating SNAC1, thus activating the antioxidant system in rice.
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