摘要：GATA transcription factors (TFs) are widespread eukaryotic regulators whose DNA-binding domain is a class IV zinc finger motif (CX
2CX
17–20CX
2C) followed by a basic region. We identified 262 GATA genes (389 GATA TFs) from seven
Populus genomes using the pipeline of GATA-TFDB. Alternative splicing forms of
Populus GATA genes exhibit dynamics of GATA gene structures including partial or full loss of GATA domain and additional domains. Subfamily III of
Populus GATA genes display lack CCT and/or TIFY domains. 21
Populus GATA gene clusters (PCs) were defined in the phylogenetic tree of GATA domains, suggesting the possibility of subfunctionalization and neofunctionalization. Expression analysis of
Populus GATA genes identified the five PCs displaying tissue-specific expression, providing the clues of their biological functions. Amino acid patterns of
Populus GATA motifs display well conserved manner of
Populus GATA genes. The five
Populus GATA genes were predicted as membrane-bound GATA TFs. Biased chromosomal distributions of GATA genes of three
Populus species. Our comparative analysis approaches of the
Populus GATA genes will be a cornerstone to understand various plant TF characteristics including evolutionary insights.
