ORCID Profile
0000-0002-2118-3534
Current Organisation
Museum of New Zealand Te Papa Tongarewa
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Publisher: CSIRO Publishing
Date: 2014
DOI: 10.1071/SB14047
Abstract: Asplenium listeri C.Chr. has been considered endemic to Christmas Island and is one of only two fern species listed as Critically Endangered under Australia’s Environment Protection and Bio ersity Conservation Act. Its status as a distinct species has been questioned because of morphological similarity to the widespread A. polyodon G.Forst., which also occurs on Christmas Island. Molecular analyses revealed that A. listeri and plants attributed to A. polyodon from coastal limestone in New Caledonia and Vanuatu share the same rbcL, trnL–trnF and rps4–trnS haplotype and that other s les of A. polyodon in Australia and the south-western Pacific belong to three separate molecular lineages. One of these lineages is formed by epiphytic A. polyodon from Christmas Island and has a chloroplast haplotype closely related to that of A. listeri, differing by four mutations. The A. listeri haplotype and each of the three A. polyodon lineages are associated with morphological characters and are all worthy of recognition as separate species. Asplenium listeri is here expanded to include limestone dwelling populations in the Pacific previously assigned to A. polyodon. This greatly extends the geographic range of A. listeri, and its conservation status should be revised accordingly. Application of correct names to all species in the A. polyodon complex requires further molecular s ling throughout its geographic range and clarification of how type material relates to each of the molecular groups.
Publisher: Elsevier BV
Date: 07-2008
DOI: 10.1016/J.YMPEV.2008.02.023
Abstract: A previous study of the relationships amongst three subgroups of the Austral Asplenium ferns found conflicting signal between the two chloroplast loci investigated. Because organelle genomes like those of chloroplasts and mitochondria are thought to be non-recombining, with a single evolutionary history, we sequenced four additional chloroplast loci with the expectation that this would resolve these relationships. Instead, the conflict was only magnified. Although tree-building analyses favoured one of the three possible trees, one of the alternative trees actually had one more supporting site (six versus five) and received greater support in spectral and neighbor-net analyses. Simulations suggested that chance alone was unlikely to produce strong support for two of the possible trees and none for the third. Likelihood permutation tests indicated that the concatenated chloroplast sequence data appeared to have experienced recombination. However, recombination between the chloroplast genomes of different species would be highly atypical, and corollary supporting observations, like chloroplast heteroplasmy, are lacking. Wider taxon s ling clarified the composition of the Austral group, but the conflicting signal meant analyses (e.g., morphological evolution, biogeographic) conditional on a well-supported phylogeny could not be performed.
Publisher: CSIRO Publishing
Date: 2014
DOI: 10.1071/SB14024
Abstract: Species boundaries and relationships were investigated in the Asplenium paleaceum (Aspleniaceae) species complex from eastern Australia, using AFLP fingerprinting and chloroplast trnL–trnF and rps4–trnS and nuclear pgiC DNA sequences. Phenetic analyses of AFLP data resulted in the following five distinct groups: (1) A. carnarvonense, (2) A. bicentenniale (including nearby collections originally identified as A. paleaceum), (3) A. paleaceum with both aborted and normal spores, (4) one population of putative tetraploid A. attenuatum var. in isum from south Queensland, and (5) remaining octoploid A. attenuatum populations and several putative hybrids. Taxonomic revision of this complex will require morphological re-circumscription of the current species and recognition of a new species if these AFLP groups are taken to represent separate species. The chloroplast regions, morphology and pgiC together provide good evidence that an Asplenium of unconfirmed identity, A. sp. ‘Kroombit Tops’, is an allopolyploid with a species of the A. paleaceum chloroplast clade, probably A. paleaceum, and distantly related A. polyodon as parents. Further study is required to determine the complete ancestry of the other species of the A. paleaceum complex.
Publisher: Informa UK Limited
Date: 12-2013
Publisher: New Zealand Ecological Society
Date: 2018
Publisher: Springer Science and Business Media LLC
Date: 04-2007
Publisher: CSIRO Publishing
Date: 2010
DOI: 10.1071/SB10028
Abstract: The fern Asplenium hookerianum Colenso (Aspleniaceae) is indigenous to New Zealand and Australia. In New Zealand, it is widespread and genetically erse, with 26 haplotypes previously identified for the chloroplast trnL–trnF locus. In Australia, A. hookerianum is currently known only from two small populations in Victoria and two in Tasmania. The present study assessed the ersity, relationships and biogeographic history of the Australian populations. A single trnL–trnF haplotype was identified in Tasmanian populations, and it was shared with populations in south-western New Zealand. The single haplotype found in Victorian populations was unique and most similar to a haplotype found in populations from central and eastern North Island, New Zealand. Relationships among haplotypes suggest that the two Australian haplotypes are derived within the group (not close to the root of the haplotype network) and only distantly related. This pattern is consistent with two independent dispersals of A. hookerianum from New Zealand to Australia. These findings are unique in providing evidence for more than one trans-Tasman dispersal event in a species of vascular plant.
Publisher: Wiley
Date: 08-2014
DOI: 10.12705/634.13
Publisher: CSIRO Publishing
Date: 2014
DOI: 10.1071/SB14043
Abstract: Aspleniaceae is one of the largest fern families. It is species-rich in Australasia and the south-western Pacific (ASWP), where approximately 115 species occur. In the current study, the chloroplast regions rbcL, trnL–trnF and rps4–trnS were sequenced for 100 Aspleniaceae s les from ASWP. These data were combined with published sequences for species from New Zealand and other regions for phylogenetic analyses. Species of Aspleniaceae from ASWP were placed in six of the eight previously identified inter-continental clades. The majority of species from ASWP were placed in two of these clades, with the remaining four clades each being represented by three or fewer species. Strong biogeographic affinities with South-east Asia were observed and immigration, rather than local radiations of endemic taxa, appears to have made a more important contribution to patterns of ersity in ASWP. This study supports the current taxonomic practice of recognising two genera, Asplenium L. and Hymenasplenium Hayata, in Aspleniaceae, and identifies future taxonomic work required for the family in this region, including potential synonymising of species, and revision of species complexes or widespread species that are demonstrably non-monophyletic.
Publisher: Springer Science and Business Media LLC
Date: 21-03-2016
Publisher: Springer Science and Business Media LLC
Date: 05-08-2020
No related grants have been discovered for Leon Perrie.