Overexpression of <i>OsPIN5b</i> Alters Plant Architecture and Impairs Cold Tolerance in Rice (<i>Oryza sativa</i> L.).

ABSTRACT: Auxin plays a versatile role in regulating plant growth and development. The auxin efflux carrier PIN-FORMED (PIN) proteins dictate the distribution and maximum of auxin within various tissues. Despite extensive research on OsPINs in recent years, their functions in abiotic stress resistance, particularly cold tolerance, remain poorly understood. Here, we investigated the role of OsPIN5b in rice (Oryza sativa L.) growth and development, as well as its contribution to cold tolerance using overexpression technology. Overexpression of OsPIN5b (OE) resulted in reduced shoot height and a lower number of adventitious roots at the seedling stage. Transgenic rice plants exhibited an earlier heading date, stunted growth, and compromised agronomic traits, including shortened pan

SUBMITTER: Fu X 

PROVIDER: S-EPMC11990878 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature