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Background <p><i>Elymus sibiricus</i> is widely utilized for establishing of high-yield artificial grasslands due to its remarkable productivity and strong resistance to environmental stresses, making it an excellent forage species. <i>SPL</i> transcription factors play a pivotal role in regulating plant growth, development, and responses to abiotic stress. Although the <i>SPL</i> gene family has been identified in many plant species, its presence and function in <i>E. sibiricus</i> remain largely unexplored.</p> Result <p>This study presents a comprehensive genome-wide identification and analysis of the <i>SPL</i> gene family in <i>E</i>. <i>sibiricus</i>. A total of 37 <i>EsSPL</i> genes were successfully identified. Their chromosomal distribution, gene structure, conserved motifs, cis-acting regulatory elements, and evolutionary relationships were analyzed. Protein-protein interaction network analysis predicted that SOC1 and TOE2 are the primary interacting proteins. Most <i>EsSPL</i> genes exhibited high expression levels in seedling tissues. Additionally, analysis of abiotic stress responses revealed that the expression of multiple <i>EsSPL</i> genes was altered under salt, drought, abscisic acid (ABA), and gibberellin (GA) treatments.</p> Conclusion <p>Through sequence homology analyses, 37 <i>SPL</i> genes were identified in <i>E</i>. <i>sibiricus</i>. Most <i>SPL</i> family members exhibited high expression levels in seedling tissues, with <i>EsSPL2</i> specifically upregulated under four distinct abiotic stress conditions. These findings provide a foundation for understanding the genetic evolution and biological functions of the <i>SPL</i> gene family in <i>E. sibiricus</i>, offering valuable insights for future research and breeding efforts.</p>

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Genome-wide identification and expression analysis of the SPL transcription factor family and its expression characteristics in Elymus sibiricus

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月7日

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  • Xiang Meng,
  • Jun Tang,
  • Kaiyun Xie,
  • Zeliang Ju,
  • Lin Ma,
  • Fang Liu,
  • Dengxia Yi,
  • Wen Li,
  • Xiaoran Ma,
  • Tong Miao,
  • Chunhang Li,
  • Miaomiao Huang,
  • Jun Hong,
  • Wenhui Liu,
  • Xuemin Wang

摘要

Background

Elymus sibiricus is widely utilized for establishing of high-yield artificial grasslands due to its remarkable productivity and strong resistance to environmental stresses, making it an excellent forage species. SPL transcription factors play a pivotal role in regulating plant growth, development, and responses to abiotic stress. Although the SPL gene family has been identified in many plant species, its presence and function in E. sibiricus remain largely unexplored.

Result

This study presents a comprehensive genome-wide identification and analysis of the SPL gene family in E. sibiricus. A total of 37 EsSPL genes were successfully identified. Their chromosomal distribution, gene structure, conserved motifs, cis-acting regulatory elements, and evolutionary relationships were analyzed. Protein-protein interaction network analysis predicted that SOC1 and TOE2 are the primary interacting proteins. Most EsSPL genes exhibited high expression levels in seedling tissues. Additionally, analysis of abiotic stress responses revealed that the expression of multiple EsSPL genes was altered under salt, drought, abscisic acid (ABA), and gibberellin (GA) treatments.

Conclusion

Through sequence homology analyses, 37 SPL genes were identified in E. sibiricus. Most SPL family members exhibited high expression levels in seedling tissues, with EsSPL2 specifically upregulated under four distinct abiotic stress conditions. These findings provide a foundation for understanding the genetic evolution and biological functions of the SPL gene family in E. sibiricus, offering valuable insights for future research and breeding efforts.