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Genome-wide identification and comprehensive characterization of the ADF gene family in Triticum monococcum L. subsp. aegilopoides with insights into structure, evolution and cold stress response

文献类型： 外文期刊

作者： Liu, Xin 1 ; Zhang, Minghu 1 ; Su, Jian 1 ; Wu, Lei 3 ; Shen, Mang 3 ; Wang, Qi 4 ; Zhuang, Yamei 2 ; Zhang, Lianquan 3 ; Li, Haosheng 2 ; Chen, Gang 2 ;

作者机构： 1.Yibin Univ, Fac Agr Forestry & Food Engn, Yibin, Sichuan, Peoples R China

2.Shandong Acad Agr Sci, Crop Res Inst, Jinan, Shandong, Peoples R China

3.Sichuan Agr Univ, State Key Lab Crop Gene Explorat & Utilizat Southw, Chengdu, Sichuan, Peoples R China

4.Chinese Acad Fishery Sci, Key Lab Aquat Genom, Beijing Key Lab Fishery Biotechnol, Minist Agr & Rural Affairs, Beijing, Peoples R China

关键词： Triticum monococcum L. subsp. aegilopoides; ADF; evolution; expression profiles; cold stress

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.8； 五年影响因子：5.7 ）

ISSN： 1664-462X

年卷期： 2025 年 16 卷

页码：

收录情况： SCI

摘要： Actin-depolymerizing factors (ADFs) play crucial roles in cytoskeletal dynamics and stress adaptation in plants. In this study, we identified nine ADF genes (TbADF1 to TbADF9) in Triticum monococcum L. subsp. aegilopoides. Chromosomal distribution analysis revealed that these genes are unevenly distributed across five chromosomes, with evidence of tandem duplication events. Phylogenetic analysis clustered the TbADFs into four subfamilies, indicating evolutionary conservation among wheat relatives. Gene structure and motif analyses confirmed the presence of a conserved ADF domain. Additionally, promoter region analysis revealed a variety of cis-regulatory elements associated with hormone signaling and stress responses. Predictions of binding pockets and protein-protein interaction networks indicated potential functional sites and interactions with cytoskeletal regulators. Codon usage bias analysis showed a preference for GC-rich codons, which may enhance translation efficiency under stress. Codon usage bias analysis indicated GC-rich optimization, potentially enhancing translation efficiency under stress. Promoter methylation levels ranged from 0.0907 to 0.3053, suggesting that epigenetic regulation may contribute to the control of gene expression. Transcriptomic profiling across six tissues and under cold stress conditions (4 degrees C for 24 hours) revealed both tissue-specific expression patterns and differential cold responses. Notably, TbADF1, TbADF4, TbADF6, and TbADF7 were upregulated, with TbADF6 exhibiting the strongest induction, as its TPM value increased from 29.07 to 300.01. Furthermore, co-expression and gene ontology enrichment analyses of the upregulated genes identified key biological pathways involved in membrane integrity, phosphorylation, ribosome maturation, and lipid signaling. These findings highlight the central role of TbADF6 in cold adaptation.

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