The OsWRKY72–OsAAT30/OsGSTU26 module mediates reactive oxygen species scavenging to drive heterosis for salt tolerance in hybrid rice

• DOI: 10.1111/jipb.13640
• Publication Date: 2024-03-14T07:58:29Z
• Authors: Citao Liu; Bigang Mao; Yanxia Zhang; Lei tian; Biao Ma; Zhuo Chen; Zhongwei Wei; Aifu Li; Ye Shao; Gongye Cheng; Lingling Li; Wenyu Li; Di Zhang; Xiaoping Ding; Jiangxiang Peng; Yulin Peng; Jiwai He; Nenghui Ye; Dingyang Yuan; Chengcai Chu; Meijuan Duan
• Keywords: Germ plasm

ABSTRACT 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, heterosis analyses to examine salt response of super hybrid Chaoyou1000 (CY1000). In addition surpassing mean values for two (mid‐parent heterosis), CY1000 exhibited higher reactive oxygen species scavenging ability than both (over‐parent or heterobeltiosis). Nonadditive expression allele‐specific gene assays showed that glutathione S‐transferase OsGSTU26 amino acid transporter OsAAT30 may have major roles acting an overdominant fashion CY1000. Furthermore, identified OsWRKY72 as common transcription factor binds regulates . The salt‐sensitive phenotypes were associated with paternal genotype maternal core germplasm varieties. specifically repressed under stress, leading salinity sensitivity, while , resulting tolerance. These results suggest OsWRKY72–OsAAT30/OsGSTU26 module play important role tolerance rice, providing valuable clues elucidate rice.