数字农科院2.0

Transcriptome Profiling Of Gossypium Arboreum D.uring Fiber Initiation And T he Genome-Wide Identification Of Trihelix Transcription Factors

文献类型： 外文期刊

作者： Wang, Lingling;Mo, Huijuan;Ma, Shuya;Yue, Daoqian;Yang, Zhaoen;Yang, Zuoren;Li, Fuguang;Yang, Zuoren;Lu, Lili;Li, Fuguang

作者机构：

关键词： Gossypium arboretum; Fiber initiation; Transcriptome; Trihelix transcription factor family; Phylogenetic; qRT-PCR

期刊名称： GENE

ISSN： 0378-1119

年卷期： 2019 年 709 卷

页码：

摘要： Cotton fiber initiation is the first step in fiber development, and it determines the yield. Here, genome-wide transcriptome profiling of Gossypium arboreum was performed to determine the molecular basis of cotton fiber initiation. A comparison of the transcriptomes of fiber-bearing ovules at -0.5, 0, 0.5, 1, 1.5, 2, 2.5 and 3 d post-anthesis detected 12,049 differentially expressed genes that mainly participated in ribosome, carbon metabolism and amino acid biosynthesis pathways. Genes encoding alcohol dehydrogenase 1 and hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyl transferase, involving in fatty acid degradation and flavonoid biosynthesis, were enriched. Furthermore, 1049 differentially expressed transcription factors were identified. Among these, 17 were trihelix family transcription factors, which play important roles in plant development and responses to biotic and abiotic stresses. In total, 52 full-length trihelix genes, named as GaGTs, were identified in G. arboreum and located in 12 of the 13 cotton chromosomes. Transcriptomic data and a quantitative real-time PCR analysis indicated that several GaGTs were significantly induced during fiber initiation in G. arborewn. Thus, the genome-wide comprehensive analysis of gene expression in G. arboreum fiber initiation will serve as a useful resource for unraveling the functions of specific genes. The phylogenetic relationships and expression analyses of the G. arboreum trihelix genes established a solid foundation for future comprehensive functional analyses of the GaGTs.

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