Journal article
Phylogenomics reveals extreme gene tree discordance in a lineage of dominant trees: hybridization, introgression, and incomplete lineage sorting blur deep evolutionary relationships despite clear species groupings in Eucalyptus subgenus Eudesmia
TGB McLay, RM Fowler, PS Fahey, DJ Murphy, F Udovicic, DJ Cantrill, MJ Bayly
Molecular Phylogenetics and Evolution | Published : 2023
Abstract
Eucalypts are a large and ecologically important group of plants on the Australian continent, and understanding their evolution is important in understanding evolution of the unique Australian flora. Previous phylogenies using plastome DNA, nuclear-ribosomal DNA, or random genome-wide SNPs, have been confounded by limited genetic sampling or by idiosyncratic biological features of the eucalypts, including widespread plastome introgression. Here we present phylogenetic analyses of Eucalyptus subgenus Eudesmia (22 species from western, northern, central and eastern Australia), in the first study to apply a target-capture sequencing approach using custom, eucalypt-specific baits (of 568 genes) ..
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Awarded by University of Melbourne
Funding Acknowledgements
This study was funded through Eucalypt Australia (grant 2020-12) . We would like to thank Don Franklin for his assistance in the collection of field specimens in Queensland, for species identification and for his opinions and guidance throughout manuscript preparation. We thank Bevan Buirchell for field collections in Western Australia. We would like to thank the University of Melbourne Herbarium, National Herbarium of Victoria, Australian Tropical Herbarium, and Australian National Herbarium for the provision of leaf material for this study. Staff at ATH assisted with field work. The Peter Doherty Institute allowed access to their sonicator. This research was supported by The University of Melbourne's Research Computing Services and the Petascale Campus Initiative. Chris Jackson and Harvey Orel assisted with bioinformatic analyses. TGBM is the Pauline Ladiges Postdoctoral Fellow, supported by The University of Melbourne Botany Foundation and the Royal Botanic Gardens Victoria Foundation. Two anonymous reviewers contributed to the improvement of the manuscript.