Genome-wide Identification of the ABCB Gene Family in Melon(Cucumis melo L.) and Their Expression During Axillary Bud Development
This study performed a genome-wide identification and characterization of the ABCB gene family in melon (Cucumis melo L.), a key auxin transporter family involved in axillary bud development. Using bioinformatics approaches, we identified 39 CmABCB genes and analyzed their phylogenetic relationships, gene structures, promoter cis-elements, and expression profiles under exogenous IAA treatment. RNA-seq and qRT-PCR revealed that several CmABCB genes, particularly CmABCB14, CmABCB20, and CmABCB21, responded positively to IAA concentration, suggesting their potential role as auxin efflux carriers in suppressing axillary bud growth. This dataset provides a valuable resource for understanding the molecular regulation of branching in melon and for future genetic improvement of plant architecture.