Transcriptomic analysis implicates ABA signaling and carbon supply in the differential outgrowth of petunia axillary buds.

ABSTRACT:

Background

Shoot branching of flowering plants exhibits phenotypic plasticity and variability. This plasticity is determined by the activity of axillary meristems, which in turn is influenced by endogenous and exogenous cues such as nutrients and light. In many species, not all buds on the main shoot develop into branches despite favorable growing conditions. In petunia, basal axillary buds (buds 1-3) typically do not grow out to form branches, while more apical axillary buds (buds 6 and 7) are competent to grow.

Results

The genetic regulation of buds was explored using transcriptome analyses of petunia axillary buds at different positions on the main stem. To suppress or promote bud outgrowth, we grew the plants in media with differing phosphate (P) levels. Using RNA-seq, w

SUBMITTER: Luo Z 

PROVIDER: S-EPMC10563266 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature