Chloroplast genome assembly of Handroanthus impetiginosus: comparative analysis and molecular evolution in Bignoniaceae

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dc.creatorSobreiro, Mariane Brom
dc.creatorVieira, Lucas Donizetti
dc.creatorNunes, Rhewter
dc.creatorNovaes, Evandro
dc.creatorCoissac, Eric
dc.creatorSilva Junior, Orzenil Bonfim da
dc.creatorGrattapaglia, Dario
dc.creatorCollevatti, Rosane Garcia
dc.date.accessioned2023-08-31T14:14:29Z
dc.date.available2023-08-31T14:14:29Z
dc.date.issued2020
dc.description.abstractAbstract Main conclusion Bignoniaceae species have conserved chloroplast structure, with hotspots of nucleotide diversity. Several genes are under positive selection, and can be targets for evolutionary studies. Abstract Bignoniaceae is one of the most species-rich family of woody plants in Neotropical seasonally dry forests. Here we report the assembly of Handroanthus impetiginosus chloroplast genome and evolutionary comparative analyses of ten Bignoniaceae species representing the genera for which whole-genome chloroplast sequences were available. The chloroplast genome of H. impetiginosus is 159,462 bp in size and has a similar structure compared to the other nine species. The total number of genes was slightly variable amongst the Bignoniaceae, ranging from 124 in H. impetiginosus to 144 in Anemopaegma acutifolium. The inverted repeat (IR) size was variable, ranging from 24,657 bp (Tecomaria capensis) to 40,481 bp (A. acutifolium), due to the contraction and retraction at its boundaries. However, gene boundaries were very similar among the ten species. We found 98 forward and palindromic dispersed repeats, and 85 simple sequence repeats (SSRs). In general, chloroplast sequences were highly conserved, with few nucleotide diversity hotspots in the genes accD, clpP, rpoA, ycf1, ycf2. The phylogenetic analysis based on 77 coding genes was highly consistent with Angiosperm Phylogeny Group (APG) IV. Our results also indicate that most genes are under negative selection or neutral evolution. We found no evidence of branch-site selection, implying that H. impetiginosus is not evolving faster than the other species analyzed, notwithstanding we found site positive selection signal in several genes. These genes can provide targets for evolutionary studies in Bignoniaceae and Lamiales species.pt_BR
dc.identifier.citationSOBREIRO, Mariane B. et al. Chloroplast genome assembly of Handroanthus impetiginosus: comparative analysis and molecular evolution in Bignoniaceae. Planta, Berlin, v. 252, e91, 2020. DOI: 10.1007/s00425-020-03498-9. Disponível em: https://link.springer.com/article/10.1007/s00425-020-03498-9. Acesso em: 29 ago. 2023.pt_BR
dc.identifier.doi10.1007/s00425-020-03498-9
dc.identifier.issn0032-0935
dc.identifier.issne- 1432-2048
dc.identifier.urihttps://link.springer.com/article/10.1007/s00425-020-03498-9
dc.language.isoengpt_BR
dc.publisher.countryAlemanhapt_BR
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RMG)pt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectBranch-site selectionpt_BR
dc.subjectSubstitution ratept_BR
dc.subjectCodon usagept_BR
dc.subjectPositive selectionpt_BR
dc.subjectComparative genomicspt_BR
dc.subjectPlastome evolutionpt_BR
dc.titleChloroplast genome assembly of Handroanthus impetiginosus: comparative analysis and molecular evolution in Bignoniaceaept_BR
dc.typeArtigopt_BR

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