Yantai Academy of Agricultural Sciences, Yantai 261417, China.
Jiangsu Xuzhou Sweetpotato Research Center, Xuzhou 221131, China.
Genes (Basel). 2023 Jul 19;14(7):1471. doi: 10.3390/genes14071471.
Abscisic acid (ABA), a critical phytohormone that regulates plant development and stress response, is sensed by the ABA receptors PYR/PYL/RCAR (PYLs). The PYL genes have been widely studied in multiple plant species, while a systematic analysis of PYL genes in the genus remains unperformed. Here, a total of 13, 14, and 14 PYLs were identified in , , and , respectively. Fragment duplication was speculated to play prominent roles in PYL gene expansions. These PYLs were classified into three subfamilies via phylogenetic analysis, which was supported by exon-intron structures and conserved motif analyses. Additionally, the interspecies collinearity analysis further depicted a potential evolutionary relationship between them. Moreover, qRT-PCR analysis showed that multiple are highly and differentially responsive to abiotic stress treatments, suggesting their potential roles in sweetpotato stress responses. Taken together, these data provide valuable insights into the PYLs in the genus , which may be useful for their further functional analysis of their defense against environmental changes.
脱落酸（ABA）是一种关键的植物激素，调节植物发育和应激反应，由 ABA 受体 PYR/PYL/RCAR（PYLs）感知。PYL 基因在多种植物物种中得到了广泛研究，而对 属中的 PYL 基因进行系统分析尚未进行。在这里，分别在 、 、 和 中鉴定出了 13、14 和 14 个 PYL。片段重复被推测在 PYL 基因扩展中发挥了重要作用。这些 PYL 通过系统发育分析分为三个亚家族，这得到了外显子-内含子结构和保守基序分析的支持。此外，种间共线性分析进一步描绘了它们之间的潜在进化关系。此外，qRT-PCR 分析表明，多个 对非生物胁迫处理高度且差异响应，表明它们在甘薯胁迫反应中的潜在作用。总之，这些数据为 属中的 PYL 提供了有价值的见解，这可能对它们在防御环境变化方面的进一步功能分析有用。
