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The <i>AP2/ERF</i> gene family, referring to an exclusive class of transcription factors unique to plants, is involved in various biological processes, including plant growth and responses to environmental stresses like high salt and drought. In this study, the <i>AP2/ERF</i> gene in <i>M. notabilis</i> was comprehensively identified and bioinformatically analyzed based on the genomic data of <i>M. notabilis.</i> 106 members in the <i>MnAP2/ERF</i> gene family were identified in the <i>M. notabilis</i> genome and were categorized into five subfamilies: <i>ERF</i>, <i>AP2</i>, <i>DREB</i>, <i>RAV</i>, and <i>Soloist</i>, with the <i>ERF</i> subfamily representing 80.19% of the total. The <i>MnAP2/ERF</i> gene family was observed to be distributed on six chromosomes of <i>M. notabilis</i>. Members in the <i>MnAP2/ERF</i> gene family exhibited obvious differences in amino acid number, molecular weight, isoelectric point, and other properties. Approximately 68.87% of the MnAP2/ERF proteins were acidic, all exhibiting hydrophilic characteristics. Differences in conserved sequences and arrangement of AP2 domains were observed among distinct subfamilies, with genes in the same subfamily sharing similar conserved domain compositions. There were 47 genes without untranslated regions and 44 genes with two untranslated regions. The upstream functions of promoters were concentrated on light reactions and plant hormones. Evolutionarily, significant structural differences were identified, and 28 MnAP2/ERF gene family proteins could interact with each other. Moreover, 35 family genes were involved in 22 fragment repeat events, and 55 <i>MnAP2/ERF</i> and 84 <i>AtAP2/ERF</i> genes showed collinearity. The expression of the <i>MnAP2/ERF</i> gene family was significantly different in different parts, indicating that these gene family members were involved in different physiological activities. These results established a theoretical foundation for investigating the functional and evolutionary aspects of <i>AP2/ERF</i> gene family genes in <i>M. notabilis</i>, as well as exploring the root morphogenesis of <i>M. notabilis.</i> Additionally, this study contributes to a basis for the improvement of cultivar stress resistance of <i>M. notabilis</i>.