National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
NAM, ATAF, and CUC (NAC) transcription factors comprise a large plant-specific gene family and a few members of this family have been characterized for their roles in plant growth, development, and stress tolerance. Although recent genome sequencing of Capsicum annum aid in identification of few NAC transcription factors but which is yet to be complete in terms of other capsicum species. So the present work was undertaken to screen and identify NAC transcription factors from two Capsicum genome sequences i.e., Capsicum ang Zunla and Capsicum annum Chileptein through comparative genomics approach using known NAC transcription factors from Solanaceae family and various plant species as reference. Further attempt was made elucidate NAC domain architecture, conserved motifs, localization, trans-membrane region elucidation followed by phylogenetic studies and three-dimensional structure prediction. Extensive genome wide screening resulted a total of 186 non-redundant (46 from chileptein and 46 from zunla) NAC transcription factors from Capsicum species. Domain architecture and phylogenetic analysis showed that NAC gene family are highly diverse in nature even though they possess highly conserved N-Terminal region. Most members contained a complete NAC DNA-binding domain and a variable transcriptional regulation domain. Furthermore, most of the gene found in the nuclear region and dominated by the possession of helix region. Distinct compositions of the putative motifs were revealed on the basis of NAC protein sequences in Capsicum. Sequence analysis, together with the organization of putative motifs, indicated distinct structures and potential diverse functions of NAC family in Capsicum species. Considering the fact that a very limited number of genes of the NAC family have been characterized, our results provide a very useful reference for further functional characterization of this family in Capsicum species in near future.
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