The OsWRKY72-OsAAT30/OsGSTU26 module mediates reactive oxygen species scavenging to drive heterosis for salt tolerance in hybrid rice
文献类型： 外文期刊
作者： Liu, Citao 1 ; Mao, Bigang 2 ; Zhang, Yanxia 3 ; Tian, Lei 4 ; Ma, Biao 3 ; Chen, Zhuo 5 ; Wei, Zhongwei 2 ; Li, Aifu 6 ; Shao, Ye 2 ; Cheng, Gongye 1 ; Li, Lingling 1 ; Li, Wenyu 1 ; Zhang, Di 1 ; Ding, Xiaoping 1 ; Peng, Jiangxiang 7 ; Peng, Yulin 2 ; He, Jiwai 1 ; Ye, Nenghui 1 ; Yuan, Dingyang 2 ; Chu, Chengcai 3 ; Duan, Meijuan 1 ;
作者机构： 1.Hunan Agr Univ, Coll Agr, Hunan Prov Key Lab Stress Biol, Changsha 410128, Peoples R China
2.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China
3.South China Agr Univ, Coll Agr, Guangzhou 510642, Peoples R China
4.Henan Agr Univ, Coll Agron, Ctr Crop Genome Engn, State Key Lab Wheat & Maize Crop Sci, Zhengzhou 450002, Peoples R China
5.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China
6.Univ Michigan, Dept Computat Med & Bioinformat, Ann Arbor, MI 48109 USA
7.Biobin Data Sci Co Ltd, Changsha 410221, Peoples R China
关键词： allele-specific gene expression (ASE); heterosis; hybrid rice; nonadditive effect (NAE); salt tolerance; transcriptome and proteome
期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：11.4； 五年影响因子：10.1 ）
ISSN： 1672-9072
年卷期： 2024 年 66 卷 4 期
页码：
收录情况： SCI
摘要： Hybrid rice (Oryza sativa) generally outperforms its inbred parents in yield and stress tolerance, a phenomenon termed heterosis, but the underlying mechanism is not completely understood. Here, we combined transcriptome, proteome, physiological, and heterosis analyses to examine the salt response of super hybrid rice Chaoyou1000 (CY1000). In addition to surpassing the mean values for its two parents (mid-parent heterosis), CY1000 exhibited a higher reactive oxygen species scavenging ability than both its parents (over-parent heterosis or heterobeltiosis). Nonadditive expression and allele-specific gene expression assays showed that the glutathione S-transferase gene OsGSTU26 and the amino acid transporter gene OsAAT30 may have major roles in heterosis for salt tolerance, acting in an overdominant fashion in CY1000. Furthermore, we identified OsWRKY72 as a common transcription factor that binds and regulates OsGSTU26 and OsAAT30. The salt-sensitive phenotypes were associated with the OsWRKY72paternal genotype or the OsAAT30maternal genotype in core rice germplasm varieties. OsWRKY72paternal specifically repressed the expression of OsGSTU26 under salt stress, leading to salinity sensitivity, while OsWRKY72maternal specifically repressed OsAAT30, resulting in salinity tolerance. These results suggest that the OsWRKY72-OsAAT30/OsGSTU26 module may play an important role in heterosis for salt tolerance in an overdominant fashion in CY1000 hybrid rice, providing valuable clues to elucidate the mechanism of heterosis for salinity tolerance in hybrid rice.
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