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GATA proteins are a group of transcriptional regulators that can detect and bind to GATA motifs by zinc finger domain. The plant GATA family is one of the most significant TFs involved in light-responsive development, nitrogen metabolism, and phyto-hormone signaling. In this study, 20 potatoes and 22 tomato GATA genes were selected. The chromosomal locations, gene structures, phylogenetic tree, and the expression during developmental stages of 42 GATA transcription factors (TFs) in Solanaceae species were analyzed to further investigate the functions of these factors. Also, Gene duplication and synteny between the tomato and potato genomes were also analyzed to provide insights into their evolutionary characteristics. Furthermore, genome evolution of potato and tomato using orthologous and paralogous identification was studied. The results of chromosomal localization revealed that 20 SlGATA genes of tomato were located on 12 chromosomes, except on chromosomes 9 and 11. In potato, all 22 StGATA genes were located on 12 chromosomes. Our results indicated that gene duplication may play an important role in genome expansion of potato and tomato. So far, a complete analysis combining evolutionary analysis and expression of the GATA TFs in the Solanaceae species of tomato and potato has not been reported. A comparative phylogenetic analysis of the GATA factor zinc finger domain sequences in potato and tomato revealed four subfamilies. The conserved motifs and gene structure in most genes in each group was similar, according to the grouping of GATA TFs in phylogenetic tree. The analysis of cis -elements showed that SlGATA26a/26b and StGATA26a/26b can be suggested as candidate genes in response to abiotic and biotic stresses. SlGATA26a/26b and StGATA26a/26b genes were expressed in root, shoot, and inflorescence. Altogether, our resultsshowed diverse roles for StGATA and SlGATA genes under abiotic and biotic stresses. Utilization of cis -elements prediction can faciliate potato and tomato improvement. • GATA proteins are a group of transcriptional regulators that can detect and bind to GATA motifs by zinc finger domain. • We surveyed the phylogenetic relationships, gene structures, chromosomal locations, gene duplications, and genes expression of 42 GATA TFs in three tissue types of tomato and potato. • Our results provide insights into the functional differences, evolutionary relationships and expression profiles of GATA transcription factors in Solanaceae species. [ABSTRACT FROM AUTHOR]

Potato (Solanum tuberosum L.), a highly heterozygous cultivated tetraploid crop, is considered as a main source of food, feed and industrial use. It is ranked as the world's fourth non-cereal crop after rice, wheat, and maize. Potato is one of the most important drought-sensitive crops where drought can negatively affect plant performance, particularly tuber formation and growth. Due to the complex genetic basis of stress tolerance, classical breeding strategies often fail to meet the needs for stabilizing yield under variable conditions, although these strategies have significantly impacted the yield potential of crops during the past century. In the recent decade, Next Generation Sequencing (NGS) has provided the ability to identify markers in drought-tolerant potato which in turn can facilitate breeding potato for drought stress conditions. NGS data explained information about gene expressions which were powerful tools for biological function. Genome-wide association studies (GWAS), whole genome resequencing (WGRS), and RNA-seq have become powerful tools for analyzing complex traits in crop plants. The current study evaluates the efficacy of various three methods for elucidating marker development potato. This review demonstrates how GWAS, WGRS, and RNA-seq can be used as effective tools for genetic potato improvement. It is vital to develop molecular markers to identify molecular mechanisms in response to drought stress in potato, which would help to accelerate genetic improvement through marker-assisted selection. To better understanding drought mechanism, GWAS and RNA-seq data integrate to exploit the genetic basis drought tolerance. [ABSTRACT FROM AUTHOR]