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<p>GATA transcription factors are a group of type IV zinc-finger proteins that play critical roles in regulating plant growth, development, and responses to abiotic stress. These genes are characterized by a conserved DNA-binding domain with the consensus sequence (A/T)GATA(A/G) and a type IV zinc-finger motif containing the conserved sequence CX2CX18–20CX2C. In this study, 27 GATA genes (designated AsGATA) were identified in <i>Avena sativa</i> using the GrainGenes genome database. Comprehensive analyses were performed to examine their conserved motifs, physicochemical properties, chromosomal localization, gene structures, phylogenetic relationships, and cis-acting regulatory elements. Based on the classification of GATA family members in <i>Arabidopsis thaliana</i>, the <i>AsGATA</i> genes were categorized into four subfamilies. Gene structure analysis revealed that members of the same subfamily generally exhibited similar structural features. Subcellular localization predictions indicated that most AsGATA proteins are Likely to function in the nucleus. Chromosomal mapping demonstrated the random distribution of the 27 <i>AsGATA</i> genes across the 21 chromosomes of <i>Avena sativa</i>. Expression profiling, based on RNA-Seq data from the NCBI SRA database, identified six <i>AsGATA</i> genes that are responsive to salt stress. These genes represent promising candidates for functional studies and could be leveraged in breeding programs to develop salt-tolerant <i>Avena sativa</i> varieties.</p>

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Genome-wide identification and characterization of GATA transcription factors in Avena sativa L. and expression profiling under salinity stress

  • 期刊论文

  • 发表日期：

    2025年9月19日

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  • Muskan Bokolia,
  • Tanu Singh,
  • Nandni Goyal,
  • Avneesh Kumar,
  • Kashmir Singh,
  • Baljinder Singh

摘要

GATA transcription factors are a group of type IV zinc-finger proteins that play critical roles in regulating plant growth, development, and responses to abiotic stress. These genes are characterized by a conserved DNA-binding domain with the consensus sequence (A/T)GATA(A/G) and a type IV zinc-finger motif containing the conserved sequence CX2CX18–20CX2C. In this study, 27 GATA genes (designated AsGATA) were identified in Avena sativa using the GrainGenes genome database. Comprehensive analyses were performed to examine their conserved motifs, physicochemical properties, chromosomal localization, gene structures, phylogenetic relationships, and cis-acting regulatory elements. Based on the classification of GATA family members in Arabidopsis thaliana, the AsGATA genes were categorized into four subfamilies. Gene structure analysis revealed that members of the same subfamily generally exhibited similar structural features. Subcellular localization predictions indicated that most AsGATA proteins are Likely to function in the nucleus. Chromosomal mapping demonstrated the random distribution of the 27 AsGATA genes across the 21 chromosomes of Avena sativa. Expression profiling, based on RNA-Seq data from the NCBI SRA database, identified six AsGATA genes that are responsive to salt stress. These genes represent promising candidates for functional studies and could be leveraged in breeding programs to develop salt-tolerant Avena sativa varieties.