Genome-wide identification and characterization of Dof transcription factors in eggplant (Solanum melongenaL.)

Abstract

Eggplant (Solanum melongena L.) is an important vegetable cultivated in Asia, Africa and southern Europe and, following tomato and pepper, ranks as the third most important solanaceous vegetable crop. The Dof (DNA-binding with one finger) family is a group of plant-specific transcription factors that play important roles in plant growth, development, and response to biotic and abiotic stresses. The genes in the Dof family have been identified and analysed in many plant species, but the information remains lacking for eggplant. In the present study, we identified 29 SmeDof members from the eggplant genome database, which were classifed into nine subgroups. The phylogeny, gene structure, conserved motifs and homologous genes of SmeDof genes were comprehensively investigated. Subsequently, we analysed the expression patterns of SmeDof genes in six different eggplant subspecies. The results provide novel insights into the family of SmeDof genes and will promote the understanding of the structure and function of Dof genes in eggplant, and the role of Dof expression during stress.

Genome-wide analysis of wheat DNA-binding with one finger (Dof) transcription factor genes: evolutionary characteristics and diverse abiotic stress responses

“…Subsequently, a large number of Dof genes have been found in different plant genomes. The number of Dof genes identified from genome-based surveys varies depending on the plant species, such as 36 in A. thaliana [3], 30 in rice [32], 26 in barley [33], 28 in sorghum [34], 27 in Brachypodium distachyon [35], 34 in tomato [36], 46 in maize [37], 36 in cucumber [38], 33 in pepper [39] and 29 in eggplants [40]. Common wheat, as an allohexaploid species, has a huge genome (up to 17 GB) and more than 85% repeat sequences, leading to the slow progress of wheat genome sequencing.…”

Genome-wide analysis of wheat DNA-binding with one finger (Dof) transcription factor genes: evolutionary characteristics and diverse abiotic stress responses

“…thaliana [3], 30 in rice [32], 26 in barley [33], 28 in sorghum [34], 27 in Brachypodium distachyon [35], 34 in tomato [36], 46 in maize [37], 36 in cucumber [38], 33 in pepper [39] and 29 in eggplants [40]. Allohexaploid wheat has a huge genome (~17 GB) with more than 85% of repeat sequences that has resulted in the slow progress of the sequencing of the wheat genome.…”

The Role of Major Transcription Factors in Solanaceous Food Crops under Different Stress Conditions: Current and Future Perspectives

“…Heat maps showing the global transcription patterns of hot pepper Dof genes were generated based on publicly available RNA-seq data for the plant tissues in different developmental stages and varieties [51] (Table 1). On the other hand, the expression analysis Dof genes undertaken in eggplant varieties, some genes were not expressed (SmeDof25 and SmeDof4), and others were extremely low (SmeDof19, SmeDof20, and SmeDof22) and high (SmeDof17, SmeDof23) which may be promising for the development of transgenic lines [52]. Similarly, the StDof gene expression profiles in potato were analyzed in leaves, shoots, roots, stolons (hooked apex stolon), swelling stolons and mature tuber.…”

“…The genome wide analyses of each transcription factor have been completed and "-"indicates the genome wide analysis was not done yet. Potato's WRKY [63] Dof [58], NAC [145]; ARF [192]; ERF [181] Pepper WRKY [193] ERF [194]; Dof [51] MYB [103]; ARF [190]; NAC [195] Tomato WRKY [62] Dof [53] MYB [88] HSF [120] ARF [196] ERF [171]; Eggplant's WRKY [197] Dof [52] MYB [84].…”