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Advances in Bioinformatics - Volume 2014 2014, Article ID 424873, 13 pages -

Research Article

Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, India

Department of Bioinformatics, Hans Raj Mahila Maha Vidyalaya, Jalandhar 144008, India

Received 26 August 2014; Accepted 14 October 2014; Published 17 November 2014

Academic Editor: Paul Harrison

Copyright © 2014 Harpreet Kaur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Availability of complete plastid genomes of ten solanaceous species, Atropa belladonna, Capsicum annuum, Datura stramonium, Nicotiana sylvestris, Nicotiana tabacum, Nicotiana tomentosiformis, Nicotiana undulata, Solanum bulbocastanum, Solanum lycopersicum, and Solanum tuberosum provided us with an opportunity to conduct their in silico comparative analysis in depth. The size of complete chloroplast genomes and LSC and SSC regions of three species of Solanum is comparatively smaller than that of any other species studied till date exception: SSC region of A. belladonna. AT content of coding regions was found to be less than noncoding regions. A duplicate copy of trnH gene in C. annuum and two alternative tRNA genes for proline in D. stramonium were observed for the first time in this analysis. Further, homology search revealed the presence of rps19 pseudogene and infA genes in A. belladonna and D. stramonium, a region identical to rps19 pseudogene in C. annum and orthologues of sprA gene in another six species. Among the eighteen intron-containing genes, 3 genes have two introns and 15 genes have one intron. The longest insertion was found in accD gene in C. annuum. Phylogenetic analysis using concatenated protein coding sequences gave two clades, one for Nicotiana species and another for Solanum, Capsicum, Atropa, and Datura.





Autor: Harpreet Kaur, Bhupinder Pal Singh, Harpreet Singh, and Avinash Kaur Nagpal

Fuente: https://www.hindawi.com/



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