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Genome-Wide Analysis of the BAHD Family in Welsh Onion and CER2-LIKEs Involved in Wax Metabolism

文献类型： 外文期刊

作者： Liu, Lecheng 1 ; Xu, Huanhuan 1 ; Zhang, Wanyue 2 ; Xing, Jiayi 2 ; Zhu, Mingzhao 2 ; Zhang, Yuchen 1 ; Wang, Yongqin 2 ;

作者机构： 1.Yangtze Univ, Coll Hort & Gardening, Jingzhou 434025, Peoples R China

2.Minist Agr, Beijing Vegetable Res Ctr,Beijing Acad Agr & Fores, Natl Engn Res Ctr Vegetables,Beijing Key Lab Veget, Key Lab Biol & Genet Improvement Hort Crops North, Beijing 100097, Peoples R China

3.Shihezi Univ, Agr Coll, Dept Hort, Shihezi 832003, Peoples R China

关键词： BAHD acyltransferase; CER2-LIKEs; genes family; abiotic stress; epicuticular wax

期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）

ISSN：

年卷期： 2023 年 14 卷 6 期

页码：

收录情况： SCI

摘要： BAHD acyltransferases (BAHDs), especially those present in plant epidermal wax metabolism, are crucial for environmental adaptation. Epidermal waxes primarily comprise very-long-chain fatty acids (VLCFAs) and their derivatives, serving as significant components of aboveground plant organs. These waxes play an essential role in resisting biotic and abiotic stresses. In this study, we identified the BAHD family in Welsh onion (Allium fistulosum). Our analysis revealed the presence of AfBAHDs in all chromosomes, with a distinct concentration in Chr3. Furthermore, the cis-acting elements of AfBAHDs were associated with abiotic/biotic stress, hormones, and light. The motif of Welsh onion BAHDs indicated the presence of a specific BAHDs motif. We also established the phylogenetic relationships of AfBAHDs, identifying three homologous genes of CER2. Subsequently, we characterized the expression of AfCER2-LIKEs in a Welsh onion mutant deficient in wax and found that AfCER2-LIKE1 plays a critical role in leaf wax metabolism, while all AfCER2-LIKEs respond to abiotic stress. Our findings provide new insights into the BAHD family and lay a foundation for future studies on the regulation of wax metabolism in Welsh onion.

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