文献类型： 外文期刊
作者： Zhang, Chunhua 1 ; Feng, Ruchao 1 ; Ma, Ruijuan 1 ; Shen, Zhijun 1 ; Cai, Zhixiang 1 ; Song, Zhizhong 1 ; Peng, Bin 1 ; Y 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Pomol, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing, Jiangsu, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2018 年 13 卷 4 期
页码：
收录情况： SCI
摘要： The basic helix-loop-helix (bHLH) transcription factor family is a superfamily found in all eukaryotes that plays important roles in regulating growth and development. Over the past several decades, many bHLH superfamily genes have been identified and characterized in herbaceous and woody plants. However, the genes belonging to the bHLH superfamily in peach (Prunus persica) have not yet been comprehensively identified and characterized. Here, we identified 95 members of the bHLH superfamily in the peach genome, and these genes were classified into 19 subfamilies based on a phylogenetic comparison with bHLH proteins from Arabidopsis. The members within each subfamily were highly conserved according to the analysis of motif compositions and exon/intron organizations. The 95 bHLH genes were unevenly distributed on chromosomes 1 to 8 of the peach genome. We identified 57 pairs of bHLH members that were orthologous between peach and Arabidopsis. Additionally, 48 pairs of paralogous bHLH genes were identified on the eight chromosomes of the peach genome. Coupled with relative expression analysis of bHLH genes in red-fleshed peach fruit at five developmental stages, we identified several bHLH genes that might be involved in fruit development and anthocyanin biosynthesis. This study provides insight into the molecular mechanisms through which these genes are involved in the regulation of biological and biochemical processes in peach and lays the foundation for further studies on these genes.
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