Tan Lin, Ijaz Usman, Salih Haron, Cheng Zhihao, Ni Win Htet Nwe, Ge Yu, Azeem Farrukh
Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences (CATAS)-Hainan Key Laboratory of Banana Genetic Improvement, Haikou 571101, Hainan, China.
Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan.
Plants (Basel). 2020 Mar 27;9(4):413. doi: 10.3390/plants9040413.
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 and , 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, , and 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.
MYB转录因子是植物中最重要的转录因子家族之一。这些蛋白质在与发育、代谢和刺激反应相关的过程中发挥着关键作用；然而，关于香蕉MYB转录因子特性的研究报道很少。目前的研究分别从[具体物种1]和[具体物种2]中鉴定出305个和251个MYB基因。从基因结构、蛋白质结构域、染色体定位、系统发育和表达模式等方面报道了MYB的详细信息。根据外显子-内含子排列，这些基因被分为12个基因模型。对涉及两种香蕉（[具体物种1]和[具体物种2]）的MYB进行系统发育分析，将这些基因分为27个亚家族。这不仅突出了香蕉中MYB的保守性，也突出了其基因的获得/丢失情况。这些基因是未来功能研究的重要候选对象。两种香蕉中的MYB基因在染色体上呈随机分布，密度各异。基因重复事件的估计表明，片段重复是香蕉MYB基因家族扩张的主要因素。还探讨了MYB基因的表达谱，以了解它们在乙烯反应或发育中的潜在作用。总体而言，目前对两种香蕉MYB基因的全面分析将有助于未来的功能研究。
