Genome-Wide Identification of the Eceriferum Gene Family and Analysis of Gene Expression Patterns Under Different Treatments in Pepper (Capsicum annuum L.)
文献类型： 外文期刊
作者： Yang, Fan 1 ; Wei, Kai 1 ; Zhang, Ying 1 ; Chang, Xiaoke 1 ; Yang, Wenrui 1 ; Yao, Qiuju 1 ; Xiao, Huaijuan 2 ;
作者机构： 1.Henan Acad Agr Sci, Inst Vegetable, Zhengzhou 450002, Peoples R China
2.Henan Agr Univ, Coll Hort, Zhengzhou 450002, Peoples R China
关键词：
pepper;
期刊名称：HORTICULTURAE （ 影响因子：3.0； 五年影响因子：3.2 ）
ISSN：
年卷期： 2025 年 11 卷 6 期
页码：
收录情况： SCI
摘要： Plant cuticular wax serves as a critical component for defense against biotic and abiotic stresses, with its biosynthetic pathway regulated by the ECERIFERUM (CER) gene family. This study presents the first genome-wide identification of 79 CER genes (CalCERs) in pepper (Capsicum annuum L.), which are distributed across all 12 chromosomes. Phylogenetic analysis classified CalCERs into five clades, with clade-specific conservation of exon-intron architectures and protein motifs. Promoter cis-element analysis revealed enrichment of light-responsive elements, abscisic acid (ABA), jasmonic acid (JA), and stress-responsive regulatory motifs, indicating multi-pathway regulation. Transcriptomic data highlighted tissue-specific expression patterns, such as the root-predominant express gene CalCER1-2 and the flower-specific express gene CalCER3-1. Under abiotic stresses (drought, salt, heat, and cold), CalCER4-2 and CalCER6-6 responded rapidly, while most genes showed delayed differential expression. Under biotic stress, CalCER3-1 and CalCER5-3 were upregulated, whereas CalCER2-2 exhibited pathogen-specific suppression, suggesting roles in modulating wax-mediated pathogen resistance. Hormone treatments revealed dynamic responses: CalCER2-2 was persistently ABA-inducible, while CalCER3-1 specifically responded to JA. This study underscores evolutionary conservation and species-specific expansion of the pepper CER family, linking their expression to wax biosynthesis and stress adaptation. These insights provide a foundation for enhancing stress resilience in crops. Future work should employ gene editing and metabolomics to validate functional mechanisms and optimize breeding strategies.
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