Genome-Wide Identification and Comparative Analysis of MYB Transcription Factor Family in Musa acuminata and Musa balbisiana

Abstract

MYB transcription factors (TFs) make up one of the most important TF families in plants. These proteins play crucial roles in processes related to development, metabolism, and stimulus-response; however, very few studies have been reported for the characterization of MYB TFs from banana. The current study identified 305 and 251 MYB genes from Musa acuminata and Musa balbisiana, respectively. Comprehensive details of MYBs are reported in terms of gene structure, protein domain, chromosomal localization, phylogeny, and expression patterns. Based on the exon–intron arrangement, these genes were classified into 12 gene models. Phylogenetic analysis of MYBs involving both species of banana, Oryza sativa, and Arabidopsis thaliana distributed these genes into 27 subfamilies. This highlighted not only the conservation, but also the gain/loss of MYBs in banana. Such genes are important candidates for future functional investigations. The MYB genes in both species exhibited a random distribution on chromosomes with variable densities. Estimation of gene duplication events revealed that segmental duplications represented the major factor behind MYB gene family expansion in banana. Expression profiles of MYB genes were also explored for their potential involvement in acetylene response or development. Collectively, the current comprehensive analysis of MYB genes in both species of banana will facilitate future functional studies.

Fruit ripening: dynamics and integrated analysis of carotenoids and anthocyanins

“…In a recent analysis RrMyb10 was reported as the anthocyanin inducer in Ribes species, and its role in manipulating anthocyanin biosynthesis in heterologous systems has been highlighted [ 186 ]. Also, recent comparative analysis and genome-wide identification of MYB TF s in two varieties of banana, Musa acuminata and Musa balbisiana would enable future prospects for functional studies [ 187 ]. Apart from these, SEPALLATA and SQUAMOSA class MADS BOX genes also regulate anthocyanin accumulation in fruits.…”

Comparative genomic analysis of MYB transcription factors for cuticular wax biosynthesis and drought stress tolerance in Helianthus annuus L.

“…Presence of phylogenetic specific pattern of conserved domains has been reported by ( Azeem et al, 2018 , Waqas et al, 2019 ). This pattern of conserved motifs indicated the recent common origin of MYB TFs ( Du et al, 2013 , Tan et al, 2020 ). Furthermore, presence of conserved motifs supports the evidence of functional conservation and gene duplication events in plants ( Waqas et al, 2019 ).…”

“…Furthermore, presence of conserved motifs supports the evidence of functional conservation and gene duplication events in plants ( Waqas et al, 2019 ). Conserved motifs also determine the diversity of domain architecture which has been utilized to maintain beyond the core components of MYB domain and have an important role for the functioning of MYB related proteins ( Du et al, 2013 , Tan et al, 2020 ).…”

Genome-Wide Analysis of Myeloblastosis-Related Genes in Brassica napus L. and Positive Modulation of Osmotic Tolerance by BnMRD107

“…Based on the previous research, there are 64, and 223 MYB-related genes in the model plant Arabidopsis and rice, respectively (Chen et al, 2006(Chen et al, , 2019. Recently, 62 genes in Physcomitrella patens (Pu et al, 2020), 138 genes in Solanum tuberosum (Liu Y. H. et al, 2020), 73 genes in Musa acuminate, and 59 genes in Musa balbisiana (Tan et al, 2020) were identified as MYB-related genes. Plant MYB-related genes have been reported to be involved in multiple processes, including cellular and organ morphogenesis, secondary metabolism, circadian rhythm, and drought tolerance (Baldoni et al, 2015).…”