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<p>Glutathione S-transferase (GST), a glutathione dependent enzyme with multifunctional activity plays crucial role in plants ability to withstand stresses both biotic and abiotic. Present study involves Glutathione S-transferase (GST) gene family identification and analysis in a model bryophyte species <i>Marchantia polymorpha</i>. Study reveals a total of 37 GST proteins using sequence similarity searches and further validated through hidden Markov model (HMM). These proteins exhibit a conserved thioredoxin fold in both N-terminal and C-terminal domains. Phylogenetic analysis classified the Glutathione S-transferase gene family in <i>Marchantia polymorpha</i> (MpGST) into ten groups, where Phi class showed highest representation. Subsequently gene structure analysis revealed variation in exon numbers which were ranging from two to ten exons per gene. Furthermore, expression profiles of genes under various abiotic stresses (arsenic, temperature, salt, drought, and osmotic stress) and hormone treatments indicated upregulation of <i>MpGST</i> genes. Interestingly, <i>MpGST</i> genes exhibited increased expression pattern under oxidative stress and hormone treatments, supporting their potential role in abiotic stress management. This cumulative study provides valuable insights of the GST gene family in <i>Marchantia polymorpha</i> and highlights their involvement in stress tolerance, laying the foundation for further functional analyses of selected gene/s in bryophytes.</p>

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Genome-wide identification and abiotic stress responses of glutathione S-transferase gene family in primitive liverwort: Marchantia polymorpha

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • Monica Kumari,
  • Sanchita Gupta,
  • Shivani Singh,
  • Prasanna Dutta,
  • Mehar Hasan Asif,
  • Debasis Chakrabarty

摘要

Glutathione S-transferase (GST), a glutathione dependent enzyme with multifunctional activity plays crucial role in plants ability to withstand stresses both biotic and abiotic. Present study involves Glutathione S-transferase (GST) gene family identification and analysis in a model bryophyte species Marchantia polymorpha. Study reveals a total of 37 GST proteins using sequence similarity searches and further validated through hidden Markov model (HMM). These proteins exhibit a conserved thioredoxin fold in both N-terminal and C-terminal domains. Phylogenetic analysis classified the Glutathione S-transferase gene family in Marchantia polymorpha (MpGST) into ten groups, where Phi class showed highest representation. Subsequently gene structure analysis revealed variation in exon numbers which were ranging from two to ten exons per gene. Furthermore, expression profiles of genes under various abiotic stresses (arsenic, temperature, salt, drought, and osmotic stress) and hormone treatments indicated upregulation of MpGST genes. Interestingly, MpGST genes exhibited increased expression pattern under oxidative stress and hormone treatments, supporting their potential role in abiotic stress management. This cumulative study provides valuable insights of the GST gene family in Marchantia polymorpha and highlights their involvement in stress tolerance, laying the foundation for further functional analyses of selected gene/s in bryophytes.