Title
Araucaria angustifolia chloroplast genome sequence and its relation to other araucariaceae
Date Issued
01 July 2019
Access level
open access
Resource Type
journal article
Author(s)
Universidade Federal do Rio Grande do Sul
Universidade Federal do Rio Grande do Sul
Publisher(s)
Brazilian Journal of Genetics
Abstract
Araucaria angustifolia is endemic to southern Brazil. Known as Brazilian pine, A. angustifolia is the only native conifer species with economic and social relevance in this country. Due to massive exploitation, it has suffered a significant population decline and currently is classified as critically endangered. This encouraged the scientific community to investigate genetic features in Brazilian pine to increase resources for management and preservation. In this work, RNA-Seq data was used to determine the complete nucleotide sequence of the A. angustifolia chloroplast genome (cpDNA). The cpDNA is 146,203 bp in length and contains 122 genes, including 80 protein-coding genes, 5 ribosomal RNA genes, and 37 tRNA genes. Coding regions comprise 45.02%, 4.96% correspond to rRNAs and tRNAs, and 50.02% of the genome encompasses non-coding regions. Genes found in the inverted repeat (IR) are present as single copy, with exception of the rrn5 and trnI-CAU loci. The typical LSC, SSC, IRa and IRb organization reported in several land-plant groups is not present in A. angustifolia cpDNA. Phylogenetic analyses using Bayesian and Maximum Likelihood methods clustered A. angustifolia in the Araucariaceae family, with A. heterophylla and A. columnaris as congeneric species. The screening of A. angustifolia cpDNA reveled 100 SSRs, 14 of them corresponding to tetrapolymer loci.
Start page
671
End page
676
Volume
42
Issue
3
Language
English
OCDE Knowledge area
Geografía social, Geografía económica
Ciencias de las plantas, Botánica
Conservación de la Biodiversidad
Genética, Herencia
Subjects
Scopus EID
2-s2.0-85075181100
Source
Genetics and Molecular Biology
ISSN of the container
14154757
Sponsor(s)
This study was carried out with financial support from the Conselho Nacional de Desenvolvimento Cien-tífico e Tecnológico (CNPq), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES-Finance code 001) and Fundação de Amparo à Pesquisa do Rio Grande do Sul (FAPERGS).
This study was carried out with financial support from the Conselho Nacional de Desenvolvimento Cien-
Sources of information:
Directorio de Producción Científica
Scopus