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Genome-Scale Identification, Classification, and Expression Profiling of MYB Transcription Factor Genes in <i>Cinnamomum camphora</i>
oleh: Xiaoyue Luan, Wenlin Xu, Jiaqi Zhang, Tengfei Shen, Caihui Chen, Mengli Xi, Yongda Zhong, Meng Xu
Format: | Article |
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Diterbitkan: | MDPI AG 2022-11-01 |
Deskripsi
The camphor tree (<i>Cinnamomum camphora</i> (L.) Presl.) is the representative species of subtropical evergreen broadleaved forests in eastern Asia and an important raw material for essential oil production worldwide. Although MYBs have been comprehensively characterized and their functions have been partially resolved in many plants, it has not been explored in <i>C. camphora</i>. In this study, 121 <i>CcMYBs</i> were identified on 12 chromosomes in the whole genome of <i>C. camphora</i> and found that <i>CcMYBs</i> were mainly expanded by segmental duplication. They were divided into 28 subgroups based on phylogenetic analysis and gene structural characteristics. In the promoter regions, numerous <i>cis</i>-acting elements were related to biological processes. Analysis of RNA sequencing data from seven tissues showed that <i>CcMYBs</i> exhibited different expression profiles, suggesting that they have various roles in camphor tree development. In addition, combined with the correlation analysis of structural genes in the flavonoid synthesis pathway, we identified <i>CcMYBs</i> from three subgroups that might be related to the flavonoid biosynthesis pathway. This study systematically analyzed <i>CcMYBs</i> in <i>C. camphora</i>, which will set the stage for subsequent research on the functions of <i>CcMYBs</i> during their lifetime and provide valuable insights for the genetic improvement of camphor trees.