Overexpression of a Xylem-Dominant Expressing BTB Gene, <i>PtrBTB82</i>, Influences Cambial Activity and SCW Synthesis in <i>Populus trichocarpa</i>.

ABSTRACT: The BTB/POZ protein family is widely distributed across the biological kingdom, and its various subfamilies perform diverse physiological functions, including regulating plant growth and development, defending against pathogen invasion, participating in metabolic regulation, and responding to abiotic stresses. However, the functional roles of BTB genes in wood formation remain largely unknown. In this study, a total of 103 BTB genes were identified in Populus trichocarpa. Expression pattern analysis and β-glucuronidase (GUS) staining revealed that PtrBTB82 was predominantly expressed in the xylem. Overexpression of PtrBTB82 in P. trichocarpa significantly reduced cambial activity, resulted in a narrower xylem, and altered the chemical composition of the secondar

SUBMITTER: Zhu S 

PROVIDER: S-EPMC12787359 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature