Scholarlink

<p>Sorghum (<i>Sorghum bicolor</i>) serves dual roles as a staple food crop providing energy and nutrition for human’s consumption, and as an economic crop utilized in the production of saccharides, silage, and bioethanol. The biological significance of aerial root mucilage secretion lies in biological nitrogen fixation, through which sorghum acquires approximately 40% of its nitrogen from the atmosphere. Prior transcriptomic data indicated tissue-specific overexpression of <i>ENOD93</i> in aerial roots. This study presents the characterization of the <i>ENOD93</i> multigene family in sorghum.&#xa0;<i>Sobic.004G099900</i>&#xa0;exhibited distinct evolutionary patterns compared to the other six members in chromosomal localization, gene structure, physicochemical properties, domain architecture, subcellular targeting, and phylogenetic reconstruction, suggesting its emergence earlier in evolutionary history. Expression profiling across tissues and stress conditions revealed significant nitrogen responsiveness at the transcriptomic level. Mucilage secretion was positively correlated with the <i>ENOD93</i> expression level at the developmental stage and immersion in vitro. Collectively, these findings indicate that the ENOD93 multigene family has undergone functional diversification during evolution. The <i>ENOD93</i> expression may respond to nitrogen fluctuations in the mucilage microenvironment, suggesting it could be a candidate positive genes of aerial root mucilage secretion. This work advances understanding of <i>ENOD93</i> evolutionary patterns in sorghum and provides some clues for the exploration of genes regulating mucilage secretion in aerial roots.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Characterization of Early Nodulin 93 (ENOD93) on the mucilage secretion of aerial roots in sorghum

  • 期刊论文

  • 发表日期：

    2025年12月5日

查看全文
  • Haojie Zhang,
  • Yaru Yu,
  • Yuxue Wu,
  • Ying Li,
  • Lei Feng,
  • Yanlian Li,
  • Qiuli Du,
  • Ranxing Zhao,
  • Xiaoqiang Wang,
  • Xiaolin Song,
  • Si Xu

摘要

Sorghum (Sorghum bicolor) serves dual roles as a staple food crop providing energy and nutrition for human’s consumption, and as an economic crop utilized in the production of saccharides, silage, and bioethanol. The biological significance of aerial root mucilage secretion lies in biological nitrogen fixation, through which sorghum acquires approximately 40% of its nitrogen from the atmosphere. Prior transcriptomic data indicated tissue-specific overexpression of ENOD93 in aerial roots. This study presents the characterization of the ENOD93 multigene family in sorghum. Sobic.004G099900 exhibited distinct evolutionary patterns compared to the other six members in chromosomal localization, gene structure, physicochemical properties, domain architecture, subcellular targeting, and phylogenetic reconstruction, suggesting its emergence earlier in evolutionary history. Expression profiling across tissues and stress conditions revealed significant nitrogen responsiveness at the transcriptomic level. Mucilage secretion was positively correlated with the ENOD93 expression level at the developmental stage and immersion in vitro. Collectively, these findings indicate that the ENOD93 multigene family has undergone functional diversification during evolution. The ENOD93 expression may respond to nitrogen fluctuations in the mucilage microenvironment, suggesting it could be a candidate positive genes of aerial root mucilage secretion. This work advances understanding of ENOD93 evolutionary patterns in sorghum and provides some clues for the exploration of genes regulating mucilage secretion in aerial roots.