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<p>Fructokinases (FRKs) are pivotal enzymes involved in sugar metabolism and plant growth regulation. In this study, a total of 38 <i>BnFRK</i> genes were identified in the <i>Brassica napus</i> genome through a comprehensive genome-wide analysis. Phylogenetic classification divided these genes into four groups, with conserved motif and gene structure analyses indicating both functional conservation and divergence. Synteny and collinearity analyses revealed extensive gene duplication events, particularly within Group IV, suggesting lineage-specific expansion after polyploidization. Promoter cis-element analysis indicated that <i>BnFRKs</i> are potentially involved in hormone response and abiotic stress regulation. Transcriptome data and qRT-PCR validation demonstrated that several <i>BnFRKs</i>, especially <i>BnFRK12</i>, showed significant induction under salt, alkali, low nitrogen and osmotic stress conditions, highlighting their potential roles in stress adaptation. These findings provide a foundation for further functional characterization of <i>BnFRK</i> genes and their application in improving stress resilience in rapeseed.</p>

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Identification and expression analysis of the FRK gene family in Oilseed (Brassica napus L.)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月17日

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  • Rui Yang,
  • Jindong Chen,
  • Ying Huang,
  • Lingli Xie,
  • Jinsong Xu,
  • Le Xu,
  • Xuekun Zhang,
  • Benbo Xu

摘要

Fructokinases (FRKs) are pivotal enzymes involved in sugar metabolism and plant growth regulation. In this study, a total of 38 BnFRK genes were identified in the Brassica napus genome through a comprehensive genome-wide analysis. Phylogenetic classification divided these genes into four groups, with conserved motif and gene structure analyses indicating both functional conservation and divergence. Synteny and collinearity analyses revealed extensive gene duplication events, particularly within Group IV, suggesting lineage-specific expansion after polyploidization. Promoter cis-element analysis indicated that BnFRKs are potentially involved in hormone response and abiotic stress regulation. Transcriptome data and qRT-PCR validation demonstrated that several BnFRKs, especially BnFRK12, showed significant induction under salt, alkali, low nitrogen and osmotic stress conditions, highlighting their potential roles in stress adaptation. These findings provide a foundation for further functional characterization of BnFRK genes and their application in improving stress resilience in rapeseed.