Q. liaotungensis is an important drought-resistant tree species in Northeast China where the climate is dry and rainless. In this study, we performed a deep transcriptomic sequencing in Q. liaotungensis leaves, including de novo assembly and functional annotation for screening the candidate genes involved in drought avoidance. A total of 25,593 unigenes were obtained from Illumina sequencing platform. According to Gene Ontology annotation and KEGG pathway enrichment analysis, we screened a series of candidate genes encoding SOD, POD, CAT, DREB, MYB, WRKY, bZIP, and NAC from the Q. liaotungensis leaf transcriptome, all of which are potentially involved in drought resistance. The results of this study expanded the genetic resources of Q. liaotungensis and provided a theoretical basis for further exploring the functional gene information of Q. liaotungensis.

辽东槭是气候干燥少雨的东北地区重要的抗旱树种。在这项研究中，我们对辽东槭树叶进行了深度转录组测序，包括从头组装和功能注释，以筛选参与避免干旱的候选基因。从Illumina测序平台共获得25,593个unigenes。根据Gene Ontology注释和KEGG通路富集分析，我们从辽东槭叶转录组中筛选出一系列编码SOD、POD、CAT、DREB、MYB、WRKY、bZIP和NAC的候选基因，所有这些候选基因都可能参与抗旱性。本研究结果扩大了辽东栎的遗传资源为进一步探索辽东槭功能基因信息提供了理论依据。