Genome-wide analysis of basic helix-loop-helix superfamily members related to anthocyanin biosynthesis in eggplant (Solanum melongena L.)

被引:13
|
作者
Tian, Shiyu [1 ]
Li, Lujun [1 ]
Wei, Min [1 ,2 ]
Yang, Fengjuan [1 ,2 ,3 ]
机构
[1] Shandong Agr Univ, Coll Hort Sci & Engn, State Key Lab Crop Biol, Tai An, Shandong, Peoples R China
[2] Shandong Agr Univ, Shandong Collaborat Innovat Ctr Fruit & Vegetable, Tai An, Shandong, Peoples R China
[3] Minist Agr, Key Lab Biol & Genet Improvement Hort Crops Huang, Tai An, Shandong, Peoples R China
来源
PEERJ | 2019年 / 7卷
基金
中国国家自然科学基金;
关键词
Solanum melongena; Expression profile; bHLH; Genome-wide; Anthocyanin biosynthesis; BHLH TRANSCRIPTION FACTORS; STRESS TOLERANCE; FAMILY; GENES; CLASSIFICATION; IDENTIFICATION; ARABIDOPSIS; TEMPERATURE; EXPRESSION; HYBRIDA;
D O I
10.7717/peerj.7768
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The basic helix-loop-helix (bHLH) superfamily is considered the second largest transcription factor (TF) family. It plays regulatory roles in the developmental processes of plants and in their defense responses. In recent years, many bHLH superfamily genes have been identified and characterized in herbaceous and woody plants. However, the comprehensive genomic and functional analyses of these genes in eggplant (Solanum melongena L.) have not been reported. In this study, 121 bHLH TFs were identified in the recently released eggplant genome. The phylogeny, gene structure and conserved motifs of the SmbHLH gene were comprehensively studied. Subsequently, the phylogenetic relationship between the bHLH of eggplant and the bHLH of other species was analyzed, and the proteins were classified into 17 subfamilies. Among these protein sequences, 16 subgroups were clustered into the functional clades of Arabidopsis. Two candidate genes (SmbHLH1, SmbHLH117) that may be involved in anthocyanin biosynthesis were screened. The tissue specificity or differential expression of the bHLH genes in different tissues and under various light and temperature conditions suggested the differential regulation of tissue development and metabolism. This study not only provides a solid foundation for the functional dissection of the eggplant bHLH gene family but may also be useful for the future synthesis of anthocyanins in eggplant.
引用
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页数:24
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