Subject
molecular divergence, phylogeography, single nucleotide polymorphisms, oncology, natural product, plastids, rainforest evolution, [SDV]Life Sciences [q-bio]

Domains
Biologie, Sciences du vivant

Description

International audience Fontainea is a plant genus with nine recognised species that occur across the tropical and subtropical rainforests of Australia, Papua New Guinea, New Caledonia, and Vanuatu. One of these species is cultivated commercially as the source of a cancer therapeutic, and several other species are under threat of extinction. Despite this, the phylogenetic relationships of the genus have not been explored. Our study assessed the phylogeny of seven Fontainea taxa from the Australian and Pacific Island complex using chloroplast DNA sequence data and reduced-representation genome sequencing. Maximum-likelihood and consensus network trees were used to infer the topology of phylogenetic relationships between species, which highlighted three distinct lineages and a number of sister species. Our results indicated that the geographically disjunct species Fontainea venosa and F. pancheri formed a sister group at the earliest position of divergence for the genus. The data also revealed that the vulnerable Fontainea australis and the critically endangered F. oraria form a sister subclade with evidence of some shared plastid genotypes. Generally, our phylogenetic reconstruction supports the modern taxonomical nomenclature. However, we suggest further accessions across several species may support improved genetic distinctions between the sister groups of Fontainea within the genus.

Keywords

Language
English (en-GB)

Creators
Brunton, Aaron, , Lamont, Robert, , Conroy, Gabriel, , Yap, Samantha, Rossetto, Maurizio, Taylor-Brown, Alyce, Maggia, Laurent, Reddell, Paul, , Ogbourne, Steven,

Contributors
University of the Sunshine Coast (USC), The Royal Botanic Garden Sydney ; New South Wales Department of Primary Industries (NSW DPI), The Wellcome Trust Sanger Institute [Cambridge], Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM), Département Systèmes Biologiques (Cirad-BIOS) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), EcoBiotics Ltd., Australian GovernmentDepartment of Industry, Innovation and Science, EcoBiotics Ltd., University of the Sunshine Coast

Sources
ISSN: 1424-2818, Diversity, https://hal.inrae.fr/hal-03820572, Diversity, 2022, 14 (9), ⟨10.3390/d14090725⟩

Relation
info:eu-repo/semantics/altIdentifier/doi/10.3390/d14090725

Coverage
Vanuatu

Name of newspaper