OsBBP1, a newly identified protein containing DUF630 and DUF632 domains confers drought tolerance in rice
文献类型： 外文期刊
作者： Yu, Xiangzhen 1 ; Wang, Lanning 1 ; Xie, Yunjie 2 ; Zhu, Yongsheng 2 ; Xie, Hongguang 2 ; Wei, Linyan 2 ; Xiao, Yanjia 2 ; Cai, Qiuhua 2 ; Chen, Liping 2 ; Xie, Huaan 1 ; Zhang, Jianfu 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Agron, Fuzhou 350002, Peoples R China
2.Fujian Acad Agr Sci, Rice Res Inst, Fuzhou 350018, Peoples R China
3.Minist Agr & Affairs, Minist Sci & Technol, Natl Rice Improvement Ctr China, State Key Lab Ecol Pest Control Fujian & Taiwan Cr, Fuzhou 350003, Peoples R China
4.Fujian Acad Agr Sci, Rice Res Inst, Fuzhou 350003, Peoples R China
关键词： Reactive oxygen species (ROS); Chip-seq; OsbZIP72 TF; CATB/CATC; Yield traits
期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）
ISSN： 0168-9452
年卷期： 2024 年 345 卷
页码：
收录情况： SCI
摘要： Domain of unknown function (DUF) protein families, which are uncharacterized and numerous within the Pfam database. Recently, studies have demonstrated that DUFs played crucial roles in plant development, but whether, or how, they function in drought resistance remain unclear. In this study, we identified the Os03g0321500 gene, encoding OsbZIP72 binding protein 1 (OsBBP1), as a target of OsbZIP72 using chromatin immunoprecipitation sequencing in rice. OsBBP1 is a novel member of DUFs, which localize both in the nuclei and cytoplasm of rice protoplasts. Furthermore, yeast one-hybrid and electrophoretic mobility shift assays confirmed the specific binding between OsbZIP72 and OsBBP1. Additionally, a luciferase reporter analysis illustrated that OsbZIP72 activated the expression of OsBBP1. Drought tolerance experiments demonstrate that the OsBBP1 CRISPER-CAS9 transgenic mutants were sensitive to drought stress, but the transgenic OsBBP1 over-expressing rice plants showed enhanced drought resistance. Moreover, drought tolerance experiments in a paddy field suggested that OsBBP1 contributed to less yield or yield-related losses under drought conditions. Mechanistically, OsBBP1 might confer drought resistance by inducing more efficient reactive oxygen species (ROS) scavenging. Several ROS scavenging-related genes showed increased expression levels in OsBBP1 overexpression lines and decreased expression levels in OsBBP1 CRISPER-CAS9 mutants under drought conditions. Thus, OsBBP1, acting downstream of OsbZIP72, contributes to drought resistance and causes less yield or yield-related losses under drought conditions.
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