Complete chloroplast genome assembly of the native walnut Juglans australis

Registro completo

Título

Complete chloroplast genome assembly of the native walnut Juglans australis

Autor(es)

Orce, Ingrid Georgina

Afiliación(es) del/de los autor(es)

Orce, Ingrid Georgina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet Noa Sur. Centro Regional de Energia y Ambiente Para El Desarrollo Sustentable. - Universidad Nacional de Catamarca. Centro Regional de Energia y Ambiente Para El Desarrollo Sustentable.; Argentina

Resumen

Juglans australis is a South American walnut species of ecological, economic, and pharmacological importance. However, its phylogenetic position has remained unresolved due to the lack of comprehensive molecular data. In this study, we report the first complete chloroplast genome of J. australis, assembled de novo using NOVOPlasty 3.3 from Illumina paired-end reads. The plastome is 160,388 bp in length and exhibits the typical quadripartite structure, consisting of a large single-copy (LSC) region of 89,918 bp, a small single-copy (SSC) region of 18,425 bp, and a pair of inverted repeats (IRs) of 35,918 bp each. Genome annotation identified 112 unique genes, including 78 protein-coding genes, 30 transfer RNAs, and 4 ribosomal RNAs, with an overall GC content of 36.1%. Phylogenomic analysis based on complete chloroplast genomes confirmed the placement of J. australis within section Rhysocaryon, closely related to J. hindsii. Ka/Ks analysis across 75 shared coding genes indicated strong purifying selection overall, although nine genes (matK, atpF, accD, ycf1, and ndhD among them) showed signals of positive selection. The complete chloroplast genome of J. australis provides a valuable genomic resource for phylogenetic, evolutionary, and conservation studies within the genus Juglans, and fills an important gap in the plastid phylogenomic framework of South American walnuts

Año de publicación

2025

Idioma

inglés

Formato (Tipo MIME)

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Clasificación temática de acuerdo a la FORD

Ciencias biológicas

Condiciones de uso

Parcialmente restringido. Para acceder a los datos contactate con el repostiorio. Datos sujetos al derecho de propiedad intelectual

Repositorio digital

CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas

Identificador de proyecto

Fundacion Williams./

Identificador de proyecto

Consejo Nacional de Investigaciones Científicas y Técnicas/