CTB6 Confers Cold Tolerance at the Booting Stage by Maintaining Tapetum Development in Rice.

ABSTRACT: Rice is highly sensitive to cold stress, particularly at the booting stage, which significantly threatens rice production. In this study, we cloned a gene, CTB6, encoding a lipid transfer protein involved in cold tolerance at the booting stage in rice, based on our previous fine-mapped quantitative trait locus (QTL) qCTB10-2. CTB6 is mainly expressed in the tapetum and young microspores of the anther. CTB6 interacts with catalases (CATs) to maintain their stability, thereby scavenging reactive oxygen species (ROS) accumulation in anthers and facilitating tapetum development under cold stress conditions. Additionally, CTB6 has lipid-binding ability and affects the lipid content in anthers to regulate cold tolerance at the booting stage. Haplotype analysis and promoter activity assay reveale

SUBMITTER: Gao S 

PROVIDER: S-EPMC11905004 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature