Genome‐wide identification of R2R3‐MYB family genes and gene response to stress in ginger

Abstract

Ginger (Zingiber officinale Roscoe) is an important plant used worldwide for medicine and food. The R2R3‐MYB transcription factor (TF) family has essential roles in plant growth, development, and stresses resistance, and the number of genes in the family varies greatly among different types of plants. However, genome‐wide discovery of ZoMYBs and gene responses to stresses have not been reported in ginger. Therefore, genome‐wide analysis of R2R3‐MYB genes in ginger was conducted in this study. Protein phylogenetic relations and conserved motifs and chromosome localization and duplication, structure, and cis‐regulatory elements were analyzed. In addition, the expression patterns of selected genes were analyzed under two different stresses. A total of 299 candidate ZoMYB genes were discovered in ginger. Based on groupings of R2R3‐MYB genes in the model plant Arabidopsis thaliana (L.) Heynh., ZoMYBs were divided into eight groups. Genes were distributed across 22 chromosomes at uneven densities. In gene duplication analysis, 120 segmental duplications were identified in the ginger genome. Gene expression patterns of 10 ZoMYBs in leaves of ginger under abscisic acid (ABA) and low‐temperature stress treatments were different. The results will help to determine the exact roles of ZoMYBs in anti‐stress responses in ginger.

Genome-Wide Identification and Expression Pattern of MYB Family Transcription Factors in Erianthus fulvus

“…The occurrence of these duplication events may result in the derivation of new gene functions [58]. In this study, we found 21 segmental-duplication and 4 tandem-duplication EfMYB gene pairs in the whole E. fulvus genome, and these quantities are relatively fewer than the MYB duplication gene pairs in S. spontaneum, Tripterygium wilfordii, and ginger, which also explains the relatively small number of EfMYB genes [59,60]. It has been reported that there are usually three types of new genes derived from gene replication events, namely, nonfunctionalization, new functionalization, and subfunctionalization genes [61].…”

Volatile Organic Compounds Emitted by the Biocontrol Agent Pythium oligandrum Contribute to Ginger Plant Growth and Disease Resistance

“…In ginger exposed to Po-VOCs, the upregulation of genes annotated with the Pfam database for both the Myb-like DNA-binding domain (PF00249) and MYB-CC type transfactor LHEQLE motif (PF14379) suggested that exposure to Po-VOCs could be related to stress responses. Previously, it has been reported that ZoMYB transcription factors were upregulated in abiotically stressed ginger ( 70 ). In Po-VOC-exposed ginger plants, the upregulated genes annotated with the Pfam database for AP2 (PF00847) could be involved in priming ginger plants for resistance to abiotic stresses.…”

Exploring the genomics of abiotic stress tolerance and crop resilience to climate change

“…In this special section, Yao et al. (2022) conducted a comprehensive genome‐wide analysis of R2R3‐MYB genes in ginger, uncovering 299 potential ZoMYB genes categorized into eight groups. The analysis of gene duplication revealed 120 instances of segmental duplications in the ginger genome.…”