Nicotiana paulineana, a new Australian species in Nicotiana section Suaveolentes
Julia Bally A B , Claire E. Marks C , Hyungtaek Jung A E , Fangzhi Jia D , Sally Roden A B , Tal Cooper A B , Ed Newbigin C and Peter M. Waterhouse
A B D F
A Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, Qld 4001, Australia.
B School of Biology and Environmental Science, Queensland University of Technology, Brisbane, Qld 4001, Australia.
C School of BioSciences, The University of Melbourne, Melbourne, Vic. 3010, Australia.
D School of Biological Sciences, The University of Sydney, Sydney, NSW 2006, Australia.
E Present address: School of Biological Sciences, The University of Queensland, Saint Lucia, Qld 4072, Australia.
F Corresponding author. Email: peter.waterhouse@qut.edu.au
Australian Systematic Botany 34(5) 477-484 https://doi.org/10.1071/SB20025
Submitted: 19 October 2020 Accepted: 1 June 2021 Published: 23 July 2021
Journal Compilation © CSIRO 2021 Open Access CC BY
Abstract
Nicotiana is found predominantly in the Americas and Australia, but also has representatives in Africa and the Pacific Islands. All native Australian Nicotiana species belong to section Suaveolentes. The number of species in this section is uncertain and subject to revision. An example of this uncertainty is the taxonomic status of a South Australian Nicotiana accession colloquially termed ‘Corunna’. Here, we report sequences for nuclear and plastid markers for N. sp. Corunna (D.E.Symon 17088) and accessions of two other Australian species, N. burbidgeae and N. benthamiana. Phylogenetic comparison of these sequences with those of other members of Nicotiana places all three taxa in N. section Suaveolentes and shows that ‘Corunna’ represents a distinct phylogenetic lineage in a well supported clade along with N. goodspeedii, N. maritima, N. amplexicaulis and N. suaveolentes. Phenetic analysis of floral characters also supports recognition of N. sp. Corunna (D.E.Symon 17088) as a distinct species, which we describe here as Nicotiana paulineana Newbigin & P.M.Waterh., sp. nov. The enlarged molecular dataset described here contributes to a better understanding of taxonomic relationships within the section.
Keywords: Nicotiana, Suaveolentes, phylogenetic tree, plastid genome, classification, new species.
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