Genome-Wide Identification and Analysis of the MYB Transcription Factor Gene Family in Chili Pepper ( Capsicum spp.)

The MYB transcription factor family is very large and functionally diverse in plants, however, only a few members of this family have been reported and characterized in chili pepper ( spp.). In the present study, we performed genome-wide analyses of the MYB family in , including phylogenetic relatio...

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Bibliographic Details
Published in:International journal of molecular sciences 2021-02, Vol.22 (5), p.2229
Main Authors: Arce-Rodríguez, Magda L, Martínez, Octavio, Ochoa-Alejo, Neftalí
Format: Article
Language:English
Subjects:
Ascorbic acid
Biosynthesis
Capsaicin
capsaicinoids
Capsicum
Capsicum - genetics
Capsicum annuum
Cell cycle
chili pepper
Chromosomes
Circadian rhythm
Deoxyribonucleic acid
DNA
expression profiles
Flowers & plants
Gene expression
Gene Expression Regulation, Plant
Genes
Genome, Plant
Genome-Wide Association Study
Genomes
Lignin
Localization
Metabolism
Multigene Family
MYB transcription factor
Peppers
Phylogenetics
Phylogeny
Plant Proteins - genetics
Plant Proteins - metabolism
Protein structure
Proteins
Proto-Oncogene Proteins c-myb - genetics
Proto-Oncogene Proteins c-myb - metabolism
secondary metabolism
Sequence analysis
Transcription factors
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Summary:The MYB transcription factor family is very large and functionally diverse in plants, however, only a few members of this family have been reported and characterized in chili pepper ( spp.). In the present study, we performed genome-wide analyses of the MYB family in , including phylogenetic relationships, conserved domain, gene structure organization, motif protein arrangement, chromosome distribution, chemical properties predictions, RNA-seq expression, and RT-qPCR expression assays. A total of 235 non-redundant MYB proteins were identified from , including R2R3-MYB, 3R-MYB, atypical MYB, and MYB-related subclasses. The sequence analysis of CaMYBs compared with other plant MYB proteins revealed gene conservation, but also potential specialized genes. Tissue-specific expression profiles showed that genes were differentially expressed, suggesting that they are functionally divergent. Furthermore, the integration of our data allowed us to propose strong candidates to be regulating phenylpropanoid, lignin, capsaicinoid, carotenoid, and vitamin C biosynthesis, providing new insights into the role of MYB transcription factors in secondary metabolism. This study adds valuable knowledge about the functions of genes in various processes in the genus.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms22052229