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Identification of transcription factors associated with leaf senescence in tobacco. | LitMetric

Identification of transcription factors associated with leaf senescence in tobacco.

Sci Rep

Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Keyuanjing Forth Road, Qingdao, 266101, Shandong, China.

Published: September 2024

AI Article Synopsis

  • - Leaf senescence is the final phase of leaf development, significantly affecting the yield and quality of crops, which is regulated by transcription factors (TFs) that mediate genetic changes.
  • - Recent research analyzed tobacco leaf senescence by examining gene expression patterns and identified 239 TFs associated with different senescence stages, highlighting the complexity of this process.
  • - The study also found that these TFs are linked to various biological pathways, such as hormone signaling and protein degradation, suggesting important regulatory roles in leaf senescence for future research.

Article Abstract

Leaf senescence represents the final stage of leaf development, involving transcription factors (TFs)-mediated genetic reprogramming events. The timing of crop leaf senescence has a major influence on the yield and quality of crop in agricultural production. As important regulator of plant growth, the significance of TFs in the regulation of leaf senescence have been highlighted in various plant species by recent advances in genetics. However, studies on underlying molecular mechanisms are still not adequately explained. In this study, for analyzing the regulation of TFs on senescence of tobacco leaves, we combined gene differential expression analysis with weighted gene co-expression network analysis (WGCNA) to analyze the time-series gene expression profiles in senescing tobacco leaf. Among 3517 TF genes expressed in tobacco leaves, we identified 21, 35, and 183 TFs that were associated with early, middle, and late stages of tobacco leaf senescence, respectively. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation results reveal that these senescence response TFs are correlated with several biological pathways such as plant hormone signal transduction, ubiquitin mediated proteolysis and MAPK signaling pathway, indicating the roles of TFs in regulating leaf senescence. Our results provide implications for future studies of the potential regulatory mechanisms of TFs involved in senescence of tobacco leaves.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11405391PMC
http://dx.doi.org/10.1038/s41598-024-71941-yDOI Listing

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