Perssoniella and the genera of Schistochilaceae: a new classification based on molecular phylogenies

2010 ◽  
Vol 23 (4) ◽  
pp. 229 ◽  
Author(s):  
Xiaolan He ◽  
David Glenny
Keyword(s):  
Dna Sequence ◽  
New Caledonia ◽  
Sequence Data ◽  
Strong Support ◽  
Morphological Characters ◽  
Monotypic Genus ◽  
New Classification ◽  
Dna Sequence Data ◽  
The Family ◽  
Molecular Phylogenies

The monotypic genus Perssoniella with P. vitreocincta Herzog, endemic to New Caledonia, possesses a series of unique morphological characters and it has been assumed that the genus, assigned to the family Perssoniellaceae and suborder Perssoniellineae, is very isolated but sister to the family Schistochilaceae. The systematic identity of Perssoniella vitreocincta was studied using DNA sequence data for the chloroplast rbcL, rps4 and trnL-F regions. Our analyses placed Perssoniella vitreocincta within the family Schistochilaceae, and within Schistochila itself, with strong support. It suggests that retaining Perssoniella as an independent genus is untenable and we transfer it to the genus Schistochila. Our results indicate that Perssoniella vitreocincta is not an archaic species, as presupposed earlier. The differentiating characters in Perssoniella are mostly probably later derived, rather than ancestral. Our analyses also placed Pachyschistochila and Paraschistochila within Schistochila, again with strong support. We also transfer these two genera to Schistochila.

scholarly journals Morphology and molecules support the new monotypic genus Fenghwaia (Rhamnaceae) from south China

PhytoKeys ◽  
2021 ◽  
Vol 171 ◽  
pp. 25-35
Author(s):  
Gang-Tao Wang ◽  
Jiang-Ping Shu ◽  
Guo-Bin Jiang ◽  
Yu-Qiang Chen ◽  
Rui-Jiang Wang
Keyword(s):  
New Genus ◽  
Sequence Data ◽  
Morphological Characters ◽  
Monotypic Genus ◽  
Conservation Assessment ◽  
Dna Sequence Data ◽  
The Family ◽  
Molecular Phylogenetic ◽  
Combined Features ◽  
Near Threatened

Fenghwaia, a new monotypic genus, along with the new species Fenghwaia gardeniicarpa, is described from Guangdong Province, China. The combined features of inferior ovary, cylindrical drupaceous fruits and orbicular and dorsiventrally-compressed seeds with an elongate and pronounced basal appendage make the new genus significantly different from other genera of the family. In addition, its pollen morphology also showed great similarity to other species of this stenopalynous family. The molecular phylogenetic analysis, based on nuclear ribosomal internal transcribed spacer (ITS) and plastid trnL-F intron spacer (trnL-F) DNA sequence data from the new genus and the other 375 species representing 58 genera of Rhamnaceae, indicates that Fenghwaia is nested within the ‘rhamnoid’ group and sister to the tribe Rhamneae and then both sister to the tribe Maesopsideae. A taxonomic classification key to the ‘rhamnoid’ group is provided, based on morphological characters. A global conservation assessment is also performed and classifies Fenghwaia gardeniicarpa as Near Threatened (NT).

Molecular phylogeny of the pond treaders (Insecta: Hemiptera: Heteroptera: Mesoveliidae), discussion of the fossil record and a checklist of species assigned to the family

2012 ◽  
Vol 43 (3-4) ◽  
pp. 175-212 ◽  
Author(s):  
Jakob Damgaard ◽  
Felipe Ferraz Figueiredo Moreira ◽  
Masakazu Hayashi ◽  
Tom A. Weir ◽  
Herbert Zettel
Keyword(s):  
Dna Sequence ◽  
New Caledonia ◽  
Sequence Data ◽  
Genetic Difference ◽  
Sister Group ◽  
28S Rrna ◽  
Dna Sequence Data ◽  
Species Complexes ◽  
The Family ◽  
Genes Encoding

The phylogenetic relationships among selected species and genera of Mesoveliidae (Insecta: Hemiptera: Heteroptera: Gerromorpha) were investigated in a parsimony analysis of 2858 bp of DNA sequence data from the genes encoding COI + II, 16S rRNA and 28S rRNA. The resulting phylogeny showed that Mesoveloidea williamsiHungerford, 1929, from the subfamily Madeoveliinae, was sister group to Mniovelia Andersen & J.T. Polhemus, 1980, from the Mesoveliinae, thus making the latter subfamily paraphyletic. The genus MesoveliaMulsant & Rey, 1852 also showed to be paraphyletic, since an undescribed Laotian relative of M. indicaHorváth, 1915 and M. ujhelyiiLundblad, 1933 resulted as sister group to PhrynoveliaHorváth, 1915; and M. amoenaUhler, 1894 was sister species to Speovelia maritimaEsaki, 1929. Whereas these relationships were poorly or moderately supported, the remaining species of Mesovelia formed two distinct and well-supported clades, one comprising M. horvathiLundblad, 1933, M. hackeriHarris & Drake, 1941, and two undescribed species from Nigeria and New Caledonia, and another comprising M. vittigeraHorváth, 1895, M. stysi J.T. Polhemus & D.A. Polhemus, 2000, M. ebbenielseniAndersen & Weir, 2004, M. furcata Mulsant & Rey, 1952, and M. mulsantiWhite, 1879. A large genetic difference was found between populations of M. vittigera from Europe and Africa on one side and populations from Australia and New Caledonia on the other. DNA sequence data from a Japanese “M. vittigera” obtained from GenBank placed the specimen as strongly supported sister group to a Danish specimen of M. furcata. Comparisons of the 28S rRNA sequence data between the two specimens revealed a single C/T transition, while comparison with a Chinese female of M. furcata revealed one A/G and one C/T transition, thus suggesting mislabelling of the Japanese specimen, or an unrecognized presence of M. furcata in Japan. Considerable genetic differentiation was found between specimens of M. horvathi from Australia, New Caledonia, New Guinea, and Laos, and between sympatric specimens of M. mulsanti from Honduras, thus supporting earlier ideas of species-complexes in these two clades. Samples of Austrovelia caledonicaMalipatil & Monteith, 1983 from New Caledonia and Mniovelia kuscheli Andersen & J.T. Polhemus, 1980 from New Zealand’s North Island also revealed considerable intraspecific divergences indicating genetic isolation among geographically separated populations on these ancient islands.

Revised circumscription of Nothofagus and recognition of the segregate genera Fuscospora, Lophozonia, and Trisyngyne (Nothofagaceae)

Phytotaxa ◽  
2013 ◽  
Vol 146 (1) ◽  
pp. 1 ◽  
Author(s):  
PETER B. HEENAN ◽  
ROB D. SMISSEN
Keyword(s):  
Phylogenetic Analysis ◽  
South America ◽  
Papua New Guinea ◽  
New Genus ◽  
New Caledonia ◽  
Sequence Data ◽  
Morphological Characters ◽  
New Combinations ◽  
Southern South America ◽  
Dna Sequence Data

The generic taxonomy of the Nothofagaceae is revised. We present a new phylogenetic analysis of morphological characters and map these characters onto a recently published phylogenetic tree obtained from DNA sequence data. Results of these and previous analyses strongly support the monophyly of four clades of Nothofagaceae that are currently treated as subgenera of Nothofagus. The four clades of Nothofagaceae are robust and well-supported, with deep stem divergences, have evolutionary equivalence with other genera of Fagales, and can be circumscribed with morphological characters. We argue that these morphological and molecular differences are sufficient for the four clades of Nothofagaceae to be recognised at the primary rank of genus, and that this classification will be more informative and efficient than the currently circumscribed Nothofagus with four subgenera.        Nothofagus is recircumscribed to include five species from southern South America, Lophozonia and Trisyngyne are reinstated, and the new genus Fuscospora is described. Fuscospora and Lophozonia, with six and seven species respectively, occur in New Zealand, southern South America and Australia. Trisyngyne comprises 25 species from New Caledonia, Papua New Guinea and Indonesia. New combinations are provided where necessary in each of these genera.

From 18S ribosomal sequence data to evolution of morphology among the fungi

1995 ◽  
Vol 73 (S1) ◽  
pp. 677-683 ◽  
Author(s):  
Mary L. Berbee ◽  
John W. Taylor
Keyword(s):  
Sequence Data ◽  
Morphological Evolution ◽  
Strong Support ◽  
Morphological Characters ◽  
Geological Time ◽  
Data Set ◽  
Dna Sequence Data ◽  
Sequence Of Events ◽  
History Of ◽  
Time Of Divergence

From ribosomal DNA sequence data we can estimate ascomycete relationships, the time of divergence of major ascomycete lineages, and the history of morphological evolutionary change. Groups long accepted by mycologists such as the filamentous ascomycetes with fruiting bodies, (the plectomycetes and pyrenomycetes) are supported by 18S rDNA sequence data. After generating a phylogenetic tree showing relationships, the geological time of divergence of major fungal lineages may be estimated, inferring elapsed time using the calibrated percent substitutions between sequences. Determining the pathway of evolution of morphological characters is more difficult than inferring the relationships among these taxa. To establish the history of morphological evolution, we need accurate trees receiving strong support from our data set. We also need taxa with the intermediate characters to reveal the sequence of events in morphological evolution. Soon, however, we may be able to take a more direct approach to evolution of morphological characters, sequencing the genes that code for the character. Key words: fungus evolution, ascomycete phylogeny.

scholarly journals Toward a Natural Classification of Botryosphaeriaceae: A Study of the Type Specimens of Botryosphaeria sensu lato

2021 ◽  
Vol 12 ◽  
Author(s):  
Ying Zhang ◽  
Yupei Zhou ◽  
Wei Sun ◽  
Lili Zhao ◽  
D. Pavlic-Zupanc ◽  
...  
Keyword(s):  
Dna Sequence ◽  
Dna Sequences ◽  
Sequence Data ◽  
Morphological Characteristics ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Phylogenetic Position ◽  
Type Specimens ◽  
Natural Classification ◽  
Dna Sequence Data

The genus Botryosphaeria includes more than 200 epithets, but only the type species, Botryosphaeria dothidea and a dozen or more other species have been identified based on DNA sequence data. The taxonomic status of the other species remains unconfirmed because they lack either morphological information or DNA sequence data. In this study, types or authentic specimens of 16 “Botryosphaeria” species are reassessed to clarify their identity and phylogenetic position. nuDNA sequences of four regions, ITS, LSU, tef1-α and tub2, are analyzed and considered in combination with morphological characteristics. Based on the multigene phylogeny and morphological characters, Botryosphaeria cruenta and Botryosphaeria hamamelidis are transferred to Neofusicoccum. The generic status of Botryosphaeria aterrima and Botryosphaeria mirabile is confirmed in Botryosphaeria. Botryosphaeria berengeriana var. weigeliae and B. berengeriana var. acerina are treated synonyms of B. dothidea. Botryosphaeria mucosa is transferred to Neodeightonia as Neodeightonia mucosa, and Botryosphaeria ferruginea to Nothophoma as Nothophoma ferruginea. Botryosphaeria foliicola is reduced to synonymy with Phyllachorella micheliae. Botryosphaeria abuensis, Botryosphaeria aesculi, Botryosphaeria dasylirii, and Botryosphaeria wisteriae are tentatively kept in Botryosphaeria sensu stricto until further phylogenetic analysis is carried out on verified specimens. The ordinal status of Botryosphaeria apocyni, Botryosphaeria gaubae, and Botryosphaeria smilacinina cannot be determined, and tentatively accommodate these species in Dothideomycetes incertae sedis. The study demonstrates the significance of a polyphasic approach in characterizing type specimens, including the importance of using of DNA sequence data.

scholarly journals Phylogeny of infraorder Sejina (Acari: Mesostigmata)

Zootaxa ◽  
2004 ◽  
Vol 629 (1) ◽  
pp. 1 ◽  
Author(s):  
MARIAM LEKVEISHVILI ◽  
HANS KLOMPEN
Keyword(s):  
Dna Sequence ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
Sister Group ◽  
Morphological Characters ◽  
Morphological Data ◽  
Data Sets ◽  
Dna Sequence Data

Phylogenetic relationships among the families in the infraorder Sejina and the position of Sejina relative to other infraorders of Mesostigmata are re-examined based on molecular and morphological data. Data sets included DNA sequence data for complete 18S, EF-1 , partial CO1genes, and 69 morphological characters. The two families of Heterozerconina consistently group within Sejina, and we propose to synonymize Heterozerconina with Sejina (Sejina s.l). Microgyniina is not the closest relative of Sejina. Rather, Sejina s.l. most often groups with Gamasina. Uropodellidae and Ichthyostomatogasteridae are sister groups and this lineage forms the sister group to Discozerconidae plus Heterozerconidae. Overall, we recognize 5 families within Sejina: Uropodellidae, Ichthyostomatogasteridae, Sejidae, Discozerconidae, and Heterozerconidae.

scholarly journals On the monophyly of subfamily Tectarioideae (Polypodiaceae) and the phylogenetic placement of some associated fern genera 

Phytotaxa ◽  
2014 ◽  
Vol 164 (1) ◽  
pp. 1 ◽  
Author(s):  
FA-GUO WANG ◽  
SAM BARRATT ◽  
WILFREDO FALCÓN ◽  
MICHAEL F. FAY ◽  
SAMULI LEHTONEN ◽  
...  
Keyword(s):  
New Caledonia ◽  
Sequence Data ◽  
Intergenic Spacer ◽  
Plastid Dna ◽  
Dna Sequence Data ◽  
Phylogenetic Placement ◽  
The Past ◽  
The Family ◽  
The Caribbean ◽  
First Time

The fern genus Tectaria has generally been placed in the family Tectariaceae or in subfamily Tectarioideae (placed in Dennstaedtiaceae, Dryopteridaceae or Polypodiaceae), both of which have been variously circumscribed in the past. Here we study for the first time the phylogenetic relationships of the associated genera Hypoderris (endemic to the Caribbean), Cionidium (endemic to New Caledonia) and Pseudotectaria (endemic to Madagascar and Comoros) using DNA sequence data. Based on a broad sampling of 72 species of eupolypods I (= Polypodiaceae sensu lato) and three plastid DNA regions (atpA, rbcL and the trnL-F intergenic spacer) we were able to place the three previously unsampled genera. Our results show that Cionidium, like Ctenitopsis, Fadyenia, Hemigramma and Quercifilix, is embedded in Tectaria, and the monophyly of Tectaria is therefore corroborated only if these segregate genera are included. Hypoderris is sister to Tectaria brauniana and together they are sister to Triplophyllum, which was found to be monophyletic. Despite their morphological similarity with Tectaria, the genera Pleocnemia and Pseudotectaria were placed in Dryopteridoideae. Polypodiaceae subfamily Tectarioideae (former family Tectariaceae) is hereby defined to include Arthropteris, Hypoderris, Pteridrys, Tectaria and Triplophyllum. Aenigmopteris may also belong here, but this genus remains unsampled.

A new species of Youngia (Asteraceae, tribe Cichorieae) from Yunnan, China

Phytotaxa ◽  
2016 ◽  
Vol 275 (2) ◽  
pp. 140 ◽  
Author(s):  
RUI KE ◽  
YOU-SHENG CHEN
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Dna Sequence ◽  
Yunnan Province ◽  
Sequence Data ◽  
Strong Support ◽  
Corolla Tube ◽  
Dna Sequence Data ◽  
A New Species

Youngia gongshanensis, a new species of Youngia sect. “Mesomeris” from Yunnan province of China is described and illustrated based on evidence from morphology and molecular phylogeny. The new species is superficially very similar to Y. atripappa having a solitary and erect stem and more or less lyrately pinnatisect leaves, but can be distinguished by capitula with 5–6 (vs. 12–15) florets, corolla tube glabrous (vs. sparsely pubescent with short white spreading hairs), pappus white (vs. grayish), bracts ovate to elliptic, distinct large (vs. very small, subulate). Parsimony analyses based on DNA sequence data of the nuclear ribosomal ITS shows that the new species is sister to Y. cineripappa with strong support, but the new species differs from the latter in having a glabrous corolla tube, smaller capitula with a lesser number of florets, and especially the white pappus.

scholarly journals Circinotrichum sinense, a new asexual fungus from Hubei, China

Botany ◽  
2017 ◽  
Vol 95 (12) ◽  
pp. 1099-1108 ◽  
Author(s):  
De-Wei Li ◽  
Neil P. Schultes ◽  
Jing-Yuan Chen ◽  
Yi-Xun Wang ◽  
Rafael Felipe Castañeda-Ruiz
Keyword(s):  
Dna Sequence ◽  
Nature Reserve ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Dna Sequence Data ◽  
Fungal Taxon ◽  
National Nature Reserve

A setose hyphomycete was collected as part of a recent expedition to search for microfungi in the Duheyuan National Nature Reserve in Hubei, China. The conidia are typical of Circinotrichum Nees, being curved or falcate, single-celled, colorless, smooth with a setula at the apical end, and similar to Circinotrichum rigidum. Circinotrichum sinense has a longer setula only at the apical end and verrucose setae, while C. rigidum has a setula on both ends and smooth setae. Phylogenetic analyses using ITS and LSU DNA sequence data and examination of the morphological characters showed that this fungus cannot be identified as any previously described species of Circinotrichum. Thus, a new fungal taxon is described. A key to recognized species of Circinotrichum is also provided.

scholarly journals Three new species of Fomitiporella (Hymenochaetales, Basidiomycota) based on the evidence from morphology and DNA sequence data

MycoKeys ◽  
2018 ◽  
Vol 30 ◽  
pp. 73-89 ◽  
Author(s):  
Xiao-Hong Ji ◽  
Josef Vlasák ◽  
Xue-Mei Tian ◽  
Yu-Cheng Dai
Keyword(s):  
New Species ◽  
Dna Sequence ◽  
Sequence Data ◽  
Large Subunit ◽  
Its Region ◽  
Morphological Characters ◽  
White Rot ◽  
Molecular Evidence ◽  
Dna Sequence Data ◽  
Three New Species

Fomitiporella austroasiana, F. mangrovei and F. vietnamensis are described and illustrated as new species based on morphological characters and molecular evidence. They have annual to perennial, mostly resupinate basidiomata with grayish fresh pores, an indistinct subiculum, lack any kind of setae, have brownish, thick-walled basidiospores, and cause a white rot. The distinctive morphological characters of the new species and their related species are discussed. Phylogenies based on the nuclear ribosomal large subunit (28S) and the nuclear ribosomal ITS region show that these three new species form three distinct lineages in the Fomitiporella clade. A key to known species of Fomitiporella is given.

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