Constitutive expression of the Poplar FD-like basic leucine zipper transcription factor alters growth and bud development.

ABSTRACT: In poplar, the CO/FT regulatory module mediates seasonal growth cessation. Although FT interacts with the basic leucine zipper transcription factor FD, surprisingly little is known about the possible role of FD in bud development and growth cessation in trees. In this study, we examined the expression and localization of the poplar FD homolog, PtFD1, during short-day (SD)-induced bud development, and the consequences of overexpressing PtFD1 on bud development and shoot growth. PtFD1 was primarily expressed in apical and axillary buds and exhibited a transient increase in expression during the initial stages of SD-induced bud development. This transient increase declined with continued SD treatment. When PtFD1 was overexpressed in poplar, SD-induced growth cessation and bud formation were a

SUBMITTER: Parmentier-Line CM 

PROVIDER: S-EPMC11389003 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature