Abscisic acid (ABA) plays important roles in plant development and tolerance to abiotic stresses. Limited information is available regarding ABA signaling pathway genes in grape. In this study, 9 VvPYR/PYLs, 85 VvPP2Cs, 7 VvABIs, 7 VvSnRK2s, and 8 VvABFs were identified in the grape genome. Duplication analysis indicated that whole genome duplication might contribute to the expansion of these gene families. The comprehensive transcriptome analysis in various organs/tissues implied that most of these genes were tissue-specific, and few were environment-specific genes. Exogenous ABA treatment reduced the grape maturation period. VvPP2C59, VvPP2C60, VvPP2C66, and VvABF8 were all involved in tolerance to cold, heat, and drought stresses, revealing their crucial roles in regulating environmental stress responses. This work provides detailed information of ABA signaling pathway genes and new insights regarding their expression patterns during grape development and abiotic stress treatment.

脱落酸（ABA）在植物发育和对非生物胁迫的耐受性中起重要作用。关于葡萄中ABA信号通路基因的信息有限。在这项研究中，在葡萄基因组中鉴定出9个VvPYR / PYL，85个VvPP2C，7个VvABI，7个VvSnRK2和8个VvABF。重复分析表明，全基因组重复可能有助于这些基因家族的扩展。在各种器官/组织中进行的全面转录组分析表明，这些基因大多数是组织特异性的，而很少是环境特异性基因。外源ABA处理缩短了葡萄的成熟期。VvPP2C59，VvPP2C60，VvPP2C66和VvABF8都参与了对寒冷，高温和干旱胁迫的耐受性，揭示了它们在调节环境胁迫反应中的关键作用。这项工作提供了ABA信号通路基因的详细信息，以及有关葡萄发育和非生物胁迫处理期间其表达模式的新见解。