Comprehensive Analysis and Expression Profiling of PIN, AUX/LAX, and ABCB Auxin Transporter Gene Families in Solanum tuberosum under Phytohormone Stimuli and Abiotic Stresses

Auxin is the only plant hormone that exhibits transport polarity mediated by three families: auxin resistant (AUX) 1/like AUX1 (LAX) influx carriers, pin-formed (PIN) efflux and ATP-binding cassette B (ABCB) influx/efflux carriers. Extensive studies about biological functions of transporter genes have been reported in model plants. Information regarding these potato remains scarce. Here, we conducted a comprehensive analysis gene families to examine genomic distributions, phylogeny, co-expression analysis, structure subcellular localization, expression profiling using bioinformatics tools qRT-PCR analysis. From analyses, 5 StLAXs, 10 StPINs, 22 StABCBs were identified genome distributed 18 modules correlating development various tissues. Transient experiments indicated representative transporters showed plasma membrane localizations. The responsiveness inhibitors implied their possible roles mediating intercellular homoeostasis redistribution. differential under abscisic acid abiotic stresses specific adaptive mechanisms regulating tolerance environmental stimuli. A large number auxin-responsive stress-related cis-elements within promoters could account for diverse stresses. Our study aimed understand significance signaling