Bush peas: a rapid radiation with no support for monophyly of Pultenaea (Fabaceae: Mirbelieae)

2005 ◽  
Vol 18 (2) ◽  
pp. 133 ◽  
Author(s):  
L. A. Orthia ◽  
M. D. Crisp ◽  
L. G. Cook ◽  
R. P. J. de Kok
Keyword(s):  
Sequence Data ◽  
Molecular Data ◽  
Its Sequence ◽  
Nrdna Its ◽  
Rapid Radiation ◽  
Nuclear Genomes ◽  
Phylogenetic Hypotheses ◽  
Expanded Concept

Phylogenetic hypotheses are presented for Pultenaea based on cpDNA (trnL–F and ndhF) and nrDNA (ITS) sequence data. Pultenaea, as it is currently circumscribed, comprises six strongly supported lineages whose relationships with each other and 18 closely related genera are weak or conflicting among datasets. The lack of resolution among the six Pultenaea clades and their relatives appears to be the result of a rapid radiation, which is evident in molecular data from both the chloroplast and nuclear genomes. The molecular data provide no support for the monophyly of Pultenaea as it currently stands. Given these results, Pultenaea could split into many smaller genera. We prefer the taxonomically stable alternative of subsuming all 19 genera currently recognised in Pultenaea sensu lato (= the Mirbelia group) into an expanded concept of Pultenaea that would comprise ~470 species.

Higher-level relationships among the eucalypts are resolved by ITS-sequence data

2002 ◽  
Vol 15 (1) ◽  
pp. 49 ◽  
Author(s):  
Dorothy A. Steane ◽  
Dean Nicolle ◽  
Gay E. McKinnon ◽  
René E. Vaillancourt ◽  
Brad M. Potts
Keyword(s):  
Internal Transcribed Spacer ◽  
Sequence Data ◽  
Its Region ◽  
Molecular Data ◽  
Nuclear Ribosomal Dna ◽  
Its Sequence ◽  
Phylogenetic Groups ◽  
Single Section ◽  
Western Australian ◽  
Genus Eucalyptus

This expanded survey of ITS sequences represents the largest analysis of molecular data ever attempted on Eucalyptus. Sequences of the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA were included in an analysis of 90 species of Eucalyptus s.s. and 28 species representing eight other genera (Allosyncarpia, Angophora, Arillastrum, Corymbia, Eucalyptopsis, Stockwellia, Lophostemon and Metrosideros). The results of the study indicate that Angophora and Corymbia form a well-supported clade that is highly differentiated from Eucalyptus s.s. Corymbia species are divided between two clades, one of which may be the sister to Angophora. Allosyncarpia, Arillastrum, Eucalyptopsis and ‘Stockwellia’ are also highly differentiated from Eucalyptus s.s. If the genus Eucalyptus is to be expanded to include Angophora and Corymbia(sensu Brooker 2000), ITS data suggest that Allosyncarpia, Eucalyptopsis, ‘Stockwellia’ and potentially Arillastrum should also be included in Eucalyptus s.l. The ITS data suggest that subg. Symphyomyrtus is paraphyletic and that subg. Minutifructus should be included within it. Within subg.Symphyomyrtus, only sect. Maidenaria appears to be monophyletic. Sections Adnataria and Dumaria are probably monophyletic; sections Exsertaria and Latoangulatae are very close and probably should be combined in a single section. Section Bisectae is polyphyletic and is divided into two distinct lineages. The phylogenetic groups depicted by ITS data are consistent with the frequency of natural inter-specific hybridisations as well as data from controlled crosses within subgenus Symphyomyrtus. The ITS data illustrate that subg. Idiogenes and western Australian monocalypts are early evolutionary lines relative to E. diversifolia, E. rubiginosa (monotypic subg. Primitiva) and the eastern monocalypts and that subg. Primitiva should be sunk into subg. Eucalyptus. Subgenus Eudesmia may be monophyletic, grouping with subgenera Idiogenes and Eucalyptus. Further work is required to confirm the phylogenetic positions of the monotypic subgenera Alveolata, Cruciformes, Acerosae and Cuboidea.

Molecular data consistently recover a 'Queensland clade' of Synostemon Phyllanthaceae, Phyllantheae) with distinctive floral morphology

2014 ◽  
Vol 27 (6) ◽  
pp. 450 ◽  
Author(s):  
Ian R. H. Telford ◽  
Kanchana Pruesapan ◽  
Peter C. van Welzen ◽  
Jeremy J. Bruhl
Keyword(s):  
Molecular Analysis ◽  
Floral Morphology ◽  
Sequence Data ◽  
Conservation Status ◽  
Molecular Data ◽  
New Combination ◽  
Its Sequence

Molecular analysis of the newly reinstated genus Synostemon F.Muell. (Phyllanthaceae, Phyllantheae), using ITS sequence data from the now densely sampled genus, confirmed that the previously recognised ‘Queensland clade’ consists of Synostemon albiflorus (F.Muell. ex Müll.Arg.) Airy Shaw, S. sphenophyllus Airy Shaw, Sauropus podenzanae (S.Moore) Airy Shaw and the undescribed Synostemon spinescens, sp. nov. ined., the latter being validated here as S. spinosus I.Telford & J.J.Bruhl. Morphological synapomorphies for the clade are as follows: linear, apiculate anthers that are connivent but only basally connate, and thickened, clavate, recurved stigmas. A new combination is provided under Synostemon for Sauropus podenzanae as Synostemon podenzanae (S.Moore) I.Telford & Pruesapan and Sauropus convallarioides J.T.Hunter & J.J.Bruhl is formally placed in synonymy under Synostemon sphenophyllus. Descriptions, distributional data and notes on ecology and conservation status are provided for these species. Phyllanthus albiflorus F.Muell. ex Müll.Arg., the basionym of Synostemon albiflorus, is lectotypified.

A new species of Usnea (Parmeliaceae, lichenized Ascomycota) from Southwest China

Phytotaxa ◽  
2020 ◽  
Vol 472 (1) ◽  
pp. 23-32
Author(s):  
LIU-FU HAN ◽  
YU-HUAN XIE ◽  
HUAN-BING ZHANG ◽  
LI-SI LI ◽  
SHOU-YU GUO
Keyword(s):  
New Species ◽  
Southwest China ◽  
Sequence Data ◽  
Morphological Characteristics ◽  
Its Sequence ◽  
Nrdna Its ◽  
A New Species

During the study of Usnea from China, we identified and illustrated a new species, Usnea sulphuridiscoidea S. Y. Guo & L. F. Han from the Ailaoshan Mountain of Southwest China, based on morphological characteristics and nrDNA ITS sequence data. This new species can be distinguished morphologically from other apotheciate members of Usnea by the special lateral apothecia with sulphur disc, the inflated branches with glossy surface and numerous papillae as well as many fibrils, meanwhile lacking pseudocyphellae and soralia. The nrDNA ITS sequence data supported the recognition of the new species.

scholarly journals Type studies and fourteen new North American species of Cortinarius section Anomali reveal high continental species diversity

2021 ◽  
Vol 20 (11) ◽  
pp. 1399-1439
Author(s):  
Bálint Dima ◽  
Kare Liimatainen ◽  
Tuula Niskanen ◽  
Dimitar Bojantchev ◽  
Emma Harrower ◽  
...  
Keyword(s):  
Species Diversity ◽  
North America ◽  
North American ◽  
Sequence Data ◽  
Relevant Information ◽  
Its Sequence ◽  
Nrdna Its ◽  
Phylogenetic Species ◽  
The North ◽  
Type Studies

AbstractSection Anomali is a species-rich group in North America belonging to Cortinarius, the most diverse genus in the Agaricales. This study is based on extensive morphological investigations and molecular methods using 191 nrDNA ITS sequence data and recovered 43 phylogenetic species from which 14 are described here as new to science. We sequenced ten type materials which belonged to eight species. The synonymy of C. caesiellus with C. albidipes and C. copakensis with C. albocyaneus is proposed here. The North American occurrence of four species (C. albocyaneus, C. anomalus, C. caninus, and C. tabularis), so far known only from Europe, was confirmed. Thirteen species were not formally described here due to lack of relevant information. An identification key to the known Anomali species in North America is provided.

scholarly journals Molecular evolutionary relationships of Euphorbia scordifolia Jacq. within the genus inferred from analysis of internal transcribed spacer sequences

2015 ◽  
Vol 22 (2) ◽  
pp. 111-118 ◽  
Author(s):  
Fahad M.A. Al-Hemaid ◽  
M. Ajmal Ali ◽  
Joongku Lee ◽  
Soo-Yong Kim ◽  
Md. Oliur Rahman
Keyword(s):  
Sequence Data ◽  
Sequence Similarity ◽  
Molecular Data ◽  
Internal Transcribed Spacers ◽  
Nuclear Ribosomal Dna ◽  
Evolutionary Relationships ◽  
Local Alignment ◽  
Its Sequence ◽  
Molecular Phylogenetic ◽  
Plant Taxon

The present study explored molecular phylogenetic analysis of 28 species of Euphorbia L. for the identification and establishment of molecular evolutionary relationships of Euphorbia scordifolia Jacq. within the genus based on the internal transcribed spacers (ITS) sequences (ITS1-5.8S-ITS2) of nuclear ribosomal DNA (nrDNA). The sequence similarity search using Basic Local Alignment Search Tool (BLAST) of the ITS sequence of E. scordifolia showed the closest sequence similarity to E. supina Raf. The analysis of ITS sequence data revealed four major clades consistent with subgeneric classifications of the genus. Molecular data support placement of E. scordifolia in the subgenus Chamaesyce.Bangladesh J. Plant Taxon. 22(2): 111-118, 2015 (December)

Monochaetia ilexae sp. nov. (Pestalotiopsidaceae) from Yunnan Province in China

Phytotaxa ◽  
2017 ◽  
Vol 291 (2) ◽  
pp. 123 ◽  
Author(s):  
NIMALI I. DE SILVA ◽  
RUNGTIWA PHOOKAMSAK ◽  
SAJEEWA S. N MAHARACHCHIKUMBURA ◽  
KASUN M. THAMBUGALA ◽  
DARBHE J. BHAT ◽  
...  
Keyword(s):  
Morphological Traits ◽  
Yunnan Province ◽  
Sequence Data ◽  
Molecular Data ◽  
Its Sequence ◽  
Main Clade ◽  
Similar Range ◽  
Morphological Differences ◽  
A New Species ◽  
High Support

Monochaetia is a pestalotiopsis-like genus characterized by 3–5-septate hyaline to brown conidia with single apical and basal appendages. Monochaetia species exhibit diverse conidial morphology, but many species lack molecular data and thus it is not clear if the genus is monophyletic. In this paper, combined LSU and ITS sequence data and morphological traits are used to introduce a new Monochaetia species, M. ilexae from Yunnan Province, China from dead leaves of Ilex species. Monochaetia ilexae shares similar morphology with the type, M. monochaeta and M. kansensis having fusiform conidia and has a similar range of conidia. However M. ilexae differs from M. monochaeta and M. kansensis having different conidia length, apical and basal appendage lengths. Phylogeny agrees with morphological differences allowing Monochaetia ilexae as a new species that clusters with Monochaetia species, but is separated from the main clade with high support.

scholarly journals A Show of Character—a further response to Wiley et al.

Zootaxa ◽  
2011 ◽  
Vol 2946 (1) ◽  
pp. 29 ◽  
Author(s):  
ANTHONY C. GILL ◽  
RANDALL D. MOOI
Keyword(s):  
Dna Sequence ◽  
Large Scale ◽  
Sequence Data ◽  
Molecular Data ◽  
Scientific Rigor ◽  
Dna Sequence Data ◽  
Phylogenetic Hypotheses ◽  
Alternative Relationships

Wiley et al. (2011) begin their critique of our paper (Mooi & Gill, 2010) with an assertion: “we need to make itclear that the foundation of their arguments rests not on scientific rigor, but rather on opinions about the re-classification of fishes using molecular data. This bias is the reason that they only targeted researchers who proposed changes in the higher-level taxonomy of fishes using phylogenetic hypotheses based on DNA sequence data (Miya et al. 2007, Smith & Craig 2007, Thacker 2009). In criticizing these studies, they do not suggest any alternative relationships or provide any counter evidence to the proposed relationships.” And on page 8, they apparently read our thoughts (aside from the title, none of the words in quotations was written by us in that context) and concluded: “Mooi & Gill entitled their paper “A crisis in fish systematics” because they long for the days when “real” ichthyologists found “meaningful” characters and “true” relationships.” Finally (p. 9), they contend that “Mooi & Gill’s various studies are usually focused on Johnson & Patterson’s (1993: 555) “disparate twigs of the [percomorph] tree,” whereas the explicit studies they criticize are large-scale and taxon rich datasets that have not otherwise been analyzed in Percomorpha.”

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