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<p>WD40 is a class of scaffolding proteins widely involved in life activities such as plant growth and development, anthocyanin biosynthesis, and biotic and abiotic stresses. <i>Lagerstroemia indica</i> is one of the important ornamental woody flowers. However, systematic characterization of WD40 genes in <i>Lagerstroemia indica</i> remains limited, and their specific regulatory mechanisms in anthocyanin biosynthesis during floral development are poorly understood. Using bioinformatics technology, this study identified 70 WD40 family members from the genome of <i>L. indica</i>, and analyzed their chromosomal distribution, protein physicochemical properties, protein conserved structural domains, gene duplication and covariance, phylogeny, and protein interaction network. The study aims to establish a comprehensive framework of WD40 genes in <i>L. indica</i> and identify key candidates regulating anthocyanin accumulation during flower color development. The results showed that WD40 members were distributed on 23 chromosomes; WD40 families could be divided into 13 subfamilies and 9 clusters based on the differences in structural domains and phylogenetic analyses; and fragment duplication was the major amplification mode during the evolution of WD40 gene families. We also performed gene expression pattern analysis to investigate the potential candidate genes involved in anthocyanin biosynthesis at different stages of flower development in different varieties of <i>L. indica</i> and identified three candidate genes. The results of this study provide a valuable basis for further in-depth research on the functional analysis of the WD40 gene as well as for exploring the molecular mechanism of anthocyanin synthesis in <i>L. indica</i>.</p>

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Phylogenomic Analysis of WD40 Gene Family and the Association with Anthocyanin Biosynthesis in Lagerstroemia indica

  • 期刊论文

  • 发表日期：

    2025年6月30日

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  • Mingzhu Bai,
  • Mengmeng Chen,
  • Mengxin Yu,
  • Guozhe Zhang,
  • Yu Zhao,
  • Qingqing Ma,
  • Liyuan Yang,
  • Cuihua Gu

摘要

WD40 is a class of scaffolding proteins widely involved in life activities such as plant growth and development, anthocyanin biosynthesis, and biotic and abiotic stresses. Lagerstroemia indica is one of the important ornamental woody flowers. However, systematic characterization of WD40 genes in Lagerstroemia indica remains limited, and their specific regulatory mechanisms in anthocyanin biosynthesis during floral development are poorly understood. Using bioinformatics technology, this study identified 70 WD40 family members from the genome of L. indica, and analyzed their chromosomal distribution, protein physicochemical properties, protein conserved structural domains, gene duplication and covariance, phylogeny, and protein interaction network. The study aims to establish a comprehensive framework of WD40 genes in L. indica and identify key candidates regulating anthocyanin accumulation during flower color development. The results showed that WD40 members were distributed on 23 chromosomes; WD40 families could be divided into 13 subfamilies and 9 clusters based on the differences in structural domains and phylogenetic analyses; and fragment duplication was the major amplification mode during the evolution of WD40 gene families. We also performed gene expression pattern analysis to investigate the potential candidate genes involved in anthocyanin biosynthesis at different stages of flower development in different varieties of L. indica and identified three candidate genes. The results of this study provide a valuable basis for further in-depth research on the functional analysis of the WD40 gene as well as for exploring the molecular mechanism of anthocyanin synthesis in L. indica.