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
内蒙古大学生态与环境学院/蒙古高原生态与资源利用教育部重点实验室/内蒙古草地生态学重点实验室, 内蒙古 呼和浩特 010021
收稿日期: 2025-04-15
修回日期: 2025-08-20
网络出版日期: 2025-09-03
基金资助
Genome-wide Identification of the AP2/ERF Gene Family and Its Expression Patterns under Salt Stress in the Desert Plant Reaumuria soongarica
Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
Received date: 2025-04-15
Revised date: 2025-08-20
Online published: 2025-09-03
关键词: AP2/ERF基因家族; 表达分析; 全基因组鉴定; 红砂; 盐胁迫
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 . DOI: 10.11983/CBB25066
INTRODUCTION: Reaumuria soongorica, a perennial small shrub, is widely distributed in arid desert regions of northwestern China. It exhibits exceptional drought and salt tolerance, making it an ideal model for studying molecular mechanisms 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 promoter regions of R. soongorica AP2/ERF genes. These genes exhibited an uneven distribution across all 11 chromosomes of the R. soongorica genome, with 63 genes (90% of the total) originating from gene duplication events. Evolutionary 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 environments.
Phylogenetic tree of the AP2/ERF gene family in R. soongorica.
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