Integrative taxonomy successfully resolves the pseudo‐cryptic complex of the disjunct epiphytic moss <i>Orthotrichum consimile</i> s.l. (Orthotrichaceae)

Medina, Rafael; Lara, Francisco; Goffinet, Bernard; Garilleti, Ricardo; Mazimpaka, Vicente

doi:10.1002/tax.616002

Cited by 78 publications

(64 citation statements)

References 48 publications

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“…Sukkharak et al, 2011;Carter, 2012;Medina et al, 2012;Stech et al, 2013; the present study illustrates the importance of molecular data for clarifying species circumscriptions, resolving taxonomical issues and for the re-evaluation of morphological characters in bryophytes and Dicranum in particular. …”

Section: Discussionmentioning

confidence: 93%

Species delimitations in theDicranum acutifoliumcomplex (Dicranaceae, Bryophyta) using molecular markers

Lang

Tubanova

Stech

2014

Journal of Bryology

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Because of their morphological plasticity and broad geographic distribution, the taxonomy of Dicranum is difficult. The circumscription of the different species included in the Dicranum acutifolium complex is poorly understood and taxonomic confusions are frequent. The present study extends earlier internal transcribed spacer (ITS)-based phylogenetic reconstructions of the D. acutifolium complex by analysing five additional chloroplast markers (trnTrps4, trnL-F, psbA-trnH, rps19-rpl2, rpoB) together with ITS from a larger taxon sample. The phylogenetic analyses delimit Dicranum acutifolium (Lindb. & Arnell) C.E.O.Jensen, D. bardunovii Tubanova & Ignatova, D. brevifolium (Lindb.) Lindb., and D. septentrionale Tubanova & Ignatova, which together form the D. acutifolium complex, and confirm that D. pseudoacutifolium Otnyukova is synonymous with D. flexicaule Brid. Previously Dicranum septentrionale was known from across Russia, but it also occurs in Scandinavia, where it was probably overlooked due to the morphological resemblance to D. brevifolium. The problem of mixed collections for identification is exemplified by the holotype of D. bardunovii, which also contains individuals of the morphologically most similar D. acutifolium, according to the molecular data. Morphometric analyses support the differentiation of the D. acutifolium complex. Furthermore, ordination analyses point to a continuous range of variation among species within the D. acutifolium complex, especially due to the larger variation in D. septentrionale.

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Section: Discussionmentioning

confidence: 93%

Species delimitations in theDicranum acutifoliumcomplex (Dicranaceae, Bryophyta) using molecular markers

Lang

Tubanova

Stech

2014

Journal of Bryology

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“…In contrast, the tuberculate interspaces observed in a certain portion of reticulate spores of Microbotryum silenes-saxifragae are rather evident, although not previously noticed (probably due to the absence of SEM studies of anther smut specimens on Silene saxifraga ). Species that have only been recognized as morphologically distinct after application of methods other than comparative morphology, usually methods of molecular biology, are called pseudo-cryptic species in different studies on systematically diverse organisms (Knowlton 1993, Amato & Montresor 2008, Luttikhuizen & Dekker 2010, Medina et al 2012). The species mentioned in this paragraph, including Microbotryum silenes-saxifragae , match that concept very well.…”

Section: Discussionmentioning

confidence: 99%

Microbotryum silenes-saxifragae sp. nov. sporulating in the anthers of Silene saxifraga in southern European mountains

2013

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Currently, the monophyletic lineage of anther smuts on Caryophyllaceae includes 22 species classified in the genus Microbotryum. They are model organisms studied in many disciplines of fungal biology. A molecular phylogenetic approach was used to resolve species boundaries within the caryophyllaceous anther smuts, as species delimitation based solely on phenotypic characters was problematic. Several cryptic species were found amongst the anther smuts on Caryophyllaceae, although some morphologically distinct species were discernible, and most species were characterized by high host-specificity. In this study, anther smut specimens infecting Silene saxifraga were analysed using rDNA sequences (ITS and LSU) and morphology to resolve their specific status and to discuss their phylogenetic position within the lineage of caryophyllaceous anther smuts. The molecular phylogeny revealed that all specimens form a monophyletic lineage that is supported by the morphological trait of reticulate spores with tuberculate interspaces (observed in certain spores). This lineage cannot be attributed to any of the previously described species, and the anther smut on Silene saxifraga is described and illustrated here as a new species, Microbotryum silenes-saxifragae. This species clusters in a clade that includes Microbotryum species, which infect both closely and distantly related host plants growing in diverse ecological habitats. It appears possible that host shifts combined with changes to ecological host niches drove the evolution of Microbotryum species within this clade.

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“…Many studies result in reinstatement of synonyms (Heinrichs et al 2006 and references therein; Heinrichs et al 2009b, Medina et al 2012) thereby reducing global synonymy rates, but many also detect genuinely new entities, eventually increasing the number of published and accepted names (e.g. Kreier et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Integrative taxonomy resolves the cryptic and pseudo-cryptic Radula buccinifera complex (Porellales, Jungermanniopsida), including two reinstated and five new species

Renner¹,

Devos²,

Patiño³

et al. 2013

PHYTOKEYS

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Molecular data from three chloroplast markers resolve individuals attributable to Radula buccinifera in six lineages belonging to two subgenera, indicating the species is polyphyletic as currently circumscribed. All lineages are morphologically diagnosable, but one pair exhibits such morphological overlap that they can be considered cryptic. Molecular and morphological data justify the re-instatement of a broadly circumscribed ecologically variable R. strangulata, of R. mittenii, and the description of five new species. Two species Radula mittenii Steph. and R. notabilis sp. nov. are endemic to the Wet Tropics Bioregion of north-east Queensland, suggesting high diversity and high endemism might characterise the bryoflora of this relatively isolated wet-tropical region. Radula demissa sp. nov. is endemic to southern temperate Australasia, and like R. strangulata occurs on both sides of the Tasman Sea. Radula imposita sp. nov. is a twig and leaf epiphyte found in association with waterways in New South Wales and Queensland. Another species, R. pugioniformis sp. nov., has been confused with Radula buccinifera but was not included in the molecular phylogeny. Morphological data suggest it may belong to subg. Odontoradula. Radula buccinifera is endemic to Australia including Western Australia and Tasmania, and to date is known from south of the Clarence River on the north coast of New South Wales. Nested within R. buccinifera is a morphologically distinct plant from Norfolk Island described as R. anisotoma sp. nov. Radula australiana is resolved as monophyletic, sister to a species occurring in east coast Australian rainforests, and nesting among the R. buccinifera lineages with strong support. The molecular phylogeny suggests several long-distance dispersal events may have occurred. These include two east-west dispersal events from New Zealand to Tasmania and south-east Australia in R. strangulata, one east-west dispersal event from Tasmania to Western Australia in R. buccinifera, and at least one west-east dispersal from Australia to New Zealand in R. australiana. Another west-east dispersal event from Australia to Norfolk Island may have led to the budding speciation of R. anisotoma. In contrast, Radula demissa is phylogeographically subdivided into strongly supported clades either side of the Tasman Sea, suggesting long distance dispersal is infrequent in this species.

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Integrative taxonomy successfully resolves the pseudo‐cryptic complex of the disjunct epiphytic moss Orthotrichum consimile s.l. (Orthotrichaceae)

Cited by 78 publications

References 48 publications

Species delimitations in theDicranum acutifoliumcomplex (Dicranaceae, Bryophyta) using molecular markers

Species delimitations in theDicranum acutifoliumcomplex (Dicranaceae, Bryophyta) using molecular markers

Microbotryum silenes-saxifragae sp. nov. sporulating in the anthers of Silene saxifraga in southern European mountains

Integrative taxonomy resolves the cryptic and pseudo-cryptic Radula buccinifera complex (Porellales, Jungermanniopsida), including two reinstated and five new species

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