Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/19640
Tipo: Artigo
Título: The complete plastome of macaw palm [Acrocomia aculeata (Jacq.) Lodd. ex Mart.] and extensive molecular analyses of the evolution of plastid genes in Arecaceae
Autor(es): Santana Lopes, Amanda de
Pacheco, Túlio Gomes
Nimz, Tabea
Vieira, Leila do Nascimento
Guerra, Miguel P.
Nodari, Rubens O.
Souza, Emanuel Maltempi de Souza
Pedrosa, Fábio de Oliveira
Rogalski, Marcelo
Abstract: Macaw palm is a native species from tropical and subtropical Americas. It shows high production of oil per hectare reaching up to 70% of oil content in fruits and an interesting plasticity to grow in different ecosystems. Its domestication and breeding are still in the beginning, which makes the development of molecular markers essential to assess natural populations and germplasm collections. Therefore, we sequenced and characterized in detail the plastome of macaw palm. A total of 221 SSR loci were identified in the plastome of macaw palm. Additionally, eight polymorphism hotspots were characterized at level of subfamily and tribe. Moreover, several events of gain and loss of RNA editing sites were found within the subfam- ily Arecoideae. Aiming to uncover evolutionary events in Arecaceae, we also analyzed extensively the evolution of plastid genes. The analyses show that highly divergent genes seem to evolve in a species-specific manner, suggesting that gene degeneration events may be occurring within Arecaceae at the level of genus or species. Unexpectedly, we found that more than half of plastid protein-coding genes are under positive selection, including genes for photosynthesis, gene expression machinery and other essential plastid functions. Furthermore, we performed a phylogenomic analysis using whole plastomes of 40 taxa, representing all subfamilies of Arecaceae, which placed the macaw palm within the tribe Cocoseae. Finally, the data showed here are important for genetic studies in macaw palm and provide new insights into the evolution of plastid genes and environmental adaptation in Arecaceae.
Palavras-chave: Palm tree
Plastid genome
Plastid SSRs
Polymorphism hotspots
Gene divergence
Positive selection
Editor: Planta
Tipo de Acesso: Open Access
URI: https://doi.org/10.1007/s00425-018-2841-x
http://www.locus.ufv.br/handle/123456789/19640
Data do documento: 16-Jan-2018
Aparece nas coleções:Artigos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
artigo.pdftexto completo4,09 MBAdobe PDFThumbnail
Visualizar/Abrir


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.