植物学报2026，Vol.61Issue(3)：449-461,13.DOI:10.11983/CBB25066
荒漠植物红砂AP2/ERF基因家族鉴定及在盐胁迫下的表达模式
Genome-wide Identification of the AP2/ERF Gene Family and Its Expression Patterns Under Salt Stress in the Desert Plant Reau-muria soongorica
摘要
Abstract
INTRODUCTION:Reaumuria soongorica,a perennial small shrub,is widely distributed in arid desert regions of north-western China.It exhibits exceptional drought and salt tolerance,making it an ideal model for studying molecular mecha-nisms of plant stress resistance. RATIONALE:We used the R.soongorica genome as a reference to identify members of the AP2/ERF gene family in this species,and analyzed their phylogeny,gene structure,conserved motifs,cis-acting elements,gene duplication events,as well as the expression patterns of these family members under salt stress. RESULTS:Seventy AP2/ERF genes were identified from the R.soongorica genome.Phylogenetic analysis classified these genes into four subfamilies:AP2,ERF,DREB,and RAV.Cis-acting element analysis revealed multiple regulatory elements associated with light responsiveness,stress adaptation,growth regulation,and hormone signaling in the pro-moter regions of R.soongorica AP2/ERF genes.These genes exhibited an uneven distribution across all 11 chromo-somes of the R.soongorica genome,with 63 genes(90％of the total)originating from gene duplication events.Evolu-tionary analysis suggested that whole-genome duplication(WGD)and dispersed duplication were the primary drivers of family expansion.Under salt stress,AP2/ERF genes showed divergent expression patterns in R.soongorica seedlings,with six genes displaying significant differential expression(|log2FC|≥1,P＜0.05),implicating their potential roles in salt stress response. CONCLUSION:This study identified and characterized the AP2/ERF gene family in R.soongorica at the genomic level,thereby establishing a foundation for elucidating its functional roles in this species' adaptation to arid and saline envi-ronments.关键词
AP2/ERF基因家族/基因结构分析/盐胁迫/基因表达/红砂Key words
AP2/ERF gene family/gene structure analysis/salt stress/gene expression/Reaumuria soongorica引用本文复制引用
朱梦璇,刘渊,赵颢宇,巩薇,孙振云,党振华..荒漠植物红砂AP2/ERF基因家族鉴定及在盐胁迫下的表达模式[J].植物学报,2026,61(3):449-461,13.基金项目
国家自然科学基金(No.32460092,No.31860078)、内蒙古自然科学基金(No.2024JQ11)和内蒙古大学大学生创新项目 （No.32460092,No.31860078）
