Dynamic Metabolome and Transcriptome Profiling Provide Molecular Insights into Floral Bud Differentiation in <i>Michelia 'Xin'</i>.

ABSTRACT: Michelia 'Xin' is an evergreen rare ornamental tree species that undergoes FBD only once but blooms twice a year. However, the molecular mechanisms controlling its FBD process remain largely unknown. This study characterized the FBD process and delved into the key molecular regulatory mechanisms through transcriptomic and metabolomic analyses of developing flower buds. FBD in Michelia 'Xin' was characterized into five stages, including vegetative (T1), floral meristem transition (T2), tepal primordia differentiation (T3), stamen primordia differentiation (T4), and pistil primordia differentiation (T5). Analyses revealed a stage-specific metabolic and transcriptional regulation of FBD, with increasing numbers of differential metabolites and a decreasing number of DEGs from T1

SUBMITTER: Chen Y 

PROVIDER: S-EPMC12561709 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature