Genome-wide characterization of DREB transcription factors in Medicago truncatula: Insights into their roles in development and abiotic stress response

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dc.contributor.authorNdiko, Ludidi
dc.contributor.authorHaddoudi, Loua
dc.contributor.authorAyadi, Mariem
dc.date.accessioned2025-05-29T12:31:08Z
dc.date.available2025-05-29T12:31:08Z
dc.date.issued2025
dc.description.abstractDehydration-responsive-element binding (DREB) proteins play a crucial role in drought, salt, and environmental stress tolerance. In this study, we identified and annotated fifty-four DREB genes from the Medicago truncatula genome. These genes were analyzed at the molecular level, focusing on gene classification, genomic organization, phylogeny, synteny, structural features, and expression profiles. Phylogenetic analysis revealed that MtDREB proteins are categorized into six subgroups (A1–A6), with highly conserved motif compositions among them. Expression profiling showed that MtDREB genes are differentially expressed in various plant organs and under abiotic stresses (cold, salinity, and dehydration), with 30 % exhibiting high expression during flowering and development. Data from RNA-seq and microarrays demonstrated that 76 % of MtDREB genes are differentially expressed under at least one stress condition, indicating their involvement in various signaling pathways activated by abiotic stresses. Notably, MtDREB05, primarily induced under osmotic stress, appears to be a promising candidate for improving abiotic stress tolerance. These findings will enhance our understanding of the DREB family and aid in functional validation of DREBgenes in M. truncatula and related forage species.
dc.identifier.issnhttps://doi.org/10.3847/1538-3881/ada14c
dc.identifier.urihttps://hdl.handle.net/10566/20465
dc.language.isoen
dc.publisherElsevier Inc
dc.subjectAbiotic stress
dc.subjectDREB
dc.subjectExpression profile
dc.subjectMedicago truncatula
dc.subjectTranscription factor
dc.titleGenome-wide characterization of DREB transcription factors in Medicago truncatula: Insights into their roles in development and abiotic stress response
dc.typeArticle

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