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<p>To gain a deeper understanding of the basic biological functions of the GRAS family of genes in <i>Polygonatum kingianum</i>, members of the <i>GRAS</i> gene family were identified and functionally analyzed, and a theoretical foundation was laid for the study of the function of the <i>GRAS</i> gene family in <i>P. kingianum</i>. GRAS transcription factors play important roles in response to many abiotic stresses. GRAS proteins can activate or inhibit the expression of downstream genes by binding to specific DNA sequences, thereby affecting plant differentiation and development, hormone signaling, and adaptation to adverse conditions. Based on the genome and transcriptome data, we identified the members of the <i>GRAS</i> gene family, analyzed its structure, evolution, and cis-acting elements, and analyzed the gene expression in different tissues in combination with the transcriptome. The results showed that 39 <i>PkGRAS</i> genes were identified by multiple comparison screening, and these 39 <i>PkGRAS</i> genes were classified into 10 subfamilies. Cis-acting element analysis revealed that the <i>GRAS</i> gene family in <i>P. kingianum</i> contains abundant hormone- and stress-responsive elements. Tissue-specific expression analysis revealed that <i>GRAS</i> genes were highly expressed in three main tissues: roots, stems, and leaves. We also found three <i>PkGRAS</i> genes from the DELLA subfamily with more regulatory elements that responded and were highly expressed after GA treatment. Through systematic analysis, the functions of <i>the PkGRAS</i> genes and their roles in the growth and development of <i>P. kingianum</i> can be revealed, which will lead to an in-depth study of their potential applications in plant biology and agricultural production.</p>

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Genome-wide identification analysis of GRAS gene family in Polygonatum kingianum and PkGRAS genes response expression analysis under GA treatments

  • 期刊论文

  • 发表日期：

    2026年2月17日

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  • Bing Chen,
  • Youzhi Zhang,
  • Changying Dong

摘要

To gain a deeper understanding of the basic biological functions of the GRAS family of genes in Polygonatum kingianum, members of the GRAS gene family were identified and functionally analyzed, and a theoretical foundation was laid for the study of the function of the GRAS gene family in P. kingianum. GRAS transcription factors play important roles in response to many abiotic stresses. GRAS proteins can activate or inhibit the expression of downstream genes by binding to specific DNA sequences, thereby affecting plant differentiation and development, hormone signaling, and adaptation to adverse conditions. Based on the genome and transcriptome data, we identified the members of the GRAS gene family, analyzed its structure, evolution, and cis-acting elements, and analyzed the gene expression in different tissues in combination with the transcriptome. The results showed that 39 PkGRAS genes were identified by multiple comparison screening, and these 39 PkGRAS genes were classified into 10 subfamilies. Cis-acting element analysis revealed that the GRAS gene family in P. kingianum contains abundant hormone- and stress-responsive elements. Tissue-specific expression analysis revealed that GRAS genes were highly expressed in three main tissues: roots, stems, and leaves. We also found three PkGRAS genes from the DELLA subfamily with more regulatory elements that responded and were highly expressed after GA treatment. Through systematic analysis, the functions of the PkGRAS genes and their roles in the growth and development of P. kingianum can be revealed, which will lead to an in-depth study of their potential applications in plant biology and agricultural production.