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Registros recuperados: 37
Primeira ... 12 ... Última
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A synopsis of the saddle fungi (Helvella: Ascomycota) in Europe – species delimitation, taxonomy and typification Naturalis
Skrede, I.; Carlsen, T.; Schumacher, T..
Helvella is a widespread, speciose genus of large apothecial ascomycetes (Pezizomycete: Pezizales) that are found in terrestrial biomes of the Northern and Southern Hemispheres. This study represents a beginning on assessing species limits and applying correct names for Helvella species based on type material and specimens in the university herbaria (fungaria) of Copenhagen (C), Harvard (FH) and Oslo (O). We use morphology and phylogenetic evidence from four loci – heat shock protein 90 (hsp), translation elongation factor alpha (tef), RNA polymerase II (rpb2) and the nuclear large subunit ribosomal DNA (LSU) – to assess species boundaries in an expanded sample of Helvella specimens from Europe. We combine the morphological and phylogenetic information...
Tipo: Article / Letter to the editor Palavras-chave: Molecular phylogeny; Pezizales; Systematics.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/636691
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Ailadinium reticulatum gen. et sp. nov. (Dinophyceae), a New Thecate, Marine, Sand-Dwelling Dinoflagellate from the Northern Red Sea ArchiMer
Saburova, Maria; Chomerat, Nicolas.
A new photosynthetic, sand-dwelling marine dinoflagellate, Ailadinium reticulatum gen. et sp. nov., is described from the Jordanian coast in the Gulf of Aqaba, northern Red Sea, based on detailed morphological and molecular data. A. reticulatum is a large (53–61 μm long and 38–48 μm wide), dorsoventrally compressed species, with the epitheca smaller than the hypotheca. The theca of this new species is thick and peculiarly ornamented with round to polygonal depressions forming a foveate-reticulate thecal surface structure. The Kofoidian thecal tabulation is APC (Po, cp), 4′, 2a, 6′′, 6c, 4s, 6′′′, 1p, 1′′′′ or alternatively it can be interpreted as APC, 4′, 2a, 6′′, 6c, 4s, 6′′′, 2′′′′. The plate pattern of A. reticulatum is noticeably different from...
Tipo: Text Palavras-chave: Benthic dinoflagellates; Dinophyceae; Gulf of Aqaba; Jordan; LSU rDNA; Molecular phylogeny; Morphology; Red Sea; SSU rDNA; Taxonomy.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00226/33678/38183.pdf
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An emended description and phylogeny of the little-known Prorocentrum sipadanense Mohammad-Noor, Daugbjerg & Moestrup (Prorocentrales, Dinophyceae) from the Indian Ocean, Oman ArchiMer
Saburova, Maria; Chomerat, Nicolas.
A small Prorocentrum species was found during a pilot taxonomic survey of marine benthic dinoflagellates in the northwestern Arabian Sea, Oman. Based on the study of cells from natural samples and laboratory cultures using light and scanning electron microscopy, this taxon is attributed to the little-known Prorocentrum sipadanense, recorded so far only from East Malaysia. The description of this species has been emended to include details of internal cell structure, composition of its periflagellar area and intraspecific variability in size, shape and pore pattern. Round to oval or ovoid cells of P. sipadanese are surrounded by a prominent marginal ridge and are 17.9–23.9 µm long and 15.0–19.8 µm wide, with a foveate to reticulate thecal plate surface and...
Tipo: Text Palavras-chave: Arabian Sea; Benthic dinoflagellates; Molecular phylogeny; Morphology; Oman; Prorocentrum sipadanense; Taxonomy.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00319/42990/42560.pdf
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Characterization of actin genes in Bonamia ostreae and their application to phylogeny of the Haplosporidia ArchiMer
Lopez Flores, L; Suarez Santiago, V; Longet, D; Saulnier, Denis; Chollet, Bruno; Arzul, Isabelle.
Bonamia ostreae is a protozoan parasite that infects the European flat oyster Ostrea edulis, causing systemic infections and resulting in massive mortalities in populations of this valuable bivalve species. In this work, we have characterized B. ostreae actin genes and used their sequences for a phylogenetic analysis. Design of different primer sets was necessary to amplify the central coding region of actin genes of B. ostreae. Characterization of the sequences and their amplification in different samples demonstrated the presence of 2 intragenomic actin genes in B. ostreae, without any intron. The phylogenetic analysis placed B. ostreae in a clade with Minchinia tapetis, Minchinia teredinis and Haplosporidium costale as its closest relatives, and...
Tipo: Text Palavras-chave: Molecular phylogeny; Actin gene; Ostrea edulis parasite; Bonamia ostreae.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3562.pdf
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Davalliaceae in Peninsular Malaysia, a preliminary study based on trnL-F region Naturalis
Maideen, H.; Milne, R.I.; Gibby, M..
A preliminary molecular analysis based on trnL-F region is presented for 17 taxa of Davalliaceae in Peninsular Malaysia. Maximum parsimony and Bayesian analysis were conducted on the dataset in order to establish a robust phylogenetic relationship between taxa. The results of analysis indicate incongruence with morphological classification. All genera of Davalliaceae in the study area are paraphyletic except Araiostegia which is represented by only a single species. In addition it partially agrees with recent phylogeny base on rbcL data.
Tipo: Article / Letter to the editor Palavras-chave: Davalliaceae; Molecular phylogeny; Peninsular Malaysia; TrnL-F.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/524899
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Description and phylogenetic position of Plagiolemma distortum sp. nov., a new raphid diatom (Bacillariophyceae) from French coastal waters ArchiMer
Nezan, Elisabeth; Bilien, Gwenael; Boulben, Sylviane; Mertens, Kenneth; Chomerat, Nicolas.
A new marine raphid diatom, Plagiolemma distortum Nézan, sp. nov. is described from plankton samples from the Atlantic Ocean, south Brittany (north-western France), where it was regularly observed, but never in high abundances. Cells have an unusual and complex shape under light microscopy (LM) depending on their position and orientation. The two valves are highly vaulted and narrow in width (transapical axis). Cells contain four complexly lobed plastids and a variable number of refractive granules without particular localization. In addition, capsules containing motile cells were observed. Ultrastructural details of the frustules were investigated using scanning electron microscopy (SEM). The girdle bands are simple. Each valve possesses a sigmoid raphe...
Tipo: Text Palavras-chave: Capsules; Habitat; Molecular phylogeny; Plastids; Raphid diatom; Video.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00441/55235/56797.pdf
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First report and characterization of Fusarium circinatum, the causal agent of pitch canker in Brazil. Repositório Alice
PFENNING, L. H.; COSTA, S. da S.; MELO, M. P. de; COSTA, H.; VENTURA, J. A.; AUER, C. G.; SANTOS, A. F. dos.
Pitch canker is one of the most important diseases of pine trees worldwide, including South America. The causal agent of this disease is Fusarium circinatum, a member of the Gibberella fujikuroi complex (GFC). In South America, the species is reported from Colombia, Uruguay and Chile, but is considered a quarantine organism in Brazil. In this study we characterized isolates obtained from symptomatic pine seedlings intercepted in a nursery in Santa Catarina State using phylogenetic analyses, crossings and morphological markers. The Brazilian isolates grouped with reference material in an unique clade and formed fertile perithecia when crossed with reference tester strains. The detailed characterization given here and the availability of tester strains will...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pinus; Fusarium circinatum; Gibberella fujikuroi; Fungo quarentenário; Patógeno; Ocorrência; Brasil; Pitch canker; Mating population; Molecular phylogeny.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/988490
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Genera of diaporthalean coelomycetes associated with leaf spots of tree hosts Naturalis
Crous, P.W.; Summerell, B.A.; Alfenas, A.C.; Edwards, J.; Pascoe, I.G.; Porter, I.J.; Groenewald, J.Z..
Four different genera of diaporthalean coelomycetous fungi associated with leaf spots of tree hosts are morphologically treated and phylogenetically compared based on the DNA sequence data of the large subunit nuclear ribosomal DNA gene (LSU) and the internal transcribed spacers and 5.8S rRNA gene of the nrDNA operon. These include two new Australian genera, namely Auratiopycnidiella, proposed for a leaf spotting fungus occurring on Tristaniopsis laurina in New South Wales, and Disculoides, proposed for two species occurring on leaf spots of Eucalyptus leaves in Victoria. Two new species are described in Aurantiosacculus, a hitherto monotypic genus associated with leaf spots of Eucalyptus in Australia, namely A. acutatus on E. viminalis, and A....
Tipo: Article / Letter to the editor Palavras-chave: Leaf spot disease; Molecular phylogeny; Systematics.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/531869
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Host specificity and phylogenetic relationships among Atlantic Ovulidae (Mollusca: Gastropoda) Naturalis
Reijnen, B.T.; Hoeksema, B.W.; Gittenberger, E..
Ovulid gastropods and their octocoral hosts were collected along the leeward coast of Curaçao, Netherlands Antilles. New molecular data of Caribbean and a single Atlantic species were combined with comparable data of Indo-Pacific Ovulidae and a single East-Pacific species from GenBank. Based on two DNA markers, viz. CO-I and 16S, the phylogenetic relationships among all ovulid species of which these data are available are reconstructed. The provisional results suggest a dichotomy between the Atlantic and the Indo-Pacific taxa. Fully grown Simnialena uniplicata closely resembles juvenile Cyphoma gibbosum conchologically. Cymbovula acicularis and C. bahamaensis might be synonyms. The assignments of Caribbean host species for Cyphoma gibbosum, C....
Tipo: Article / Letter to the editor Palavras-chave: Anthozoa; Alcyonacea; Caribbean; Curaçao; Molecular phylogeny; Symbiosis; 42.73.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/336926
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Integrative taxonomy of Abacarus mites (Eriophyidae) associated with hybrid sugarcane plants, including description of a new species. Repositório Alice
DUARTE, M. E.; MENDONÇA, R. S. de; SKORACKA, A.; SILVA, E. S.; NAVIA, D..
bitstream/item/202178/1/Duarte2019-Article-IntegrativeTaxonomyOfAbacarusM.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Phytophagous mite; Eriophyoidea; Molecular phylogeny; Multivariate morphometry; Saccharum.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112340
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Juglanconis gen. nov. on Juglandaceae, and the new family Juglanconidaceae (Diaporthales) Naturalis
Voglmayr, H.; Castlebury, L.A.; Jaklitsch, W.M..
Molecular phylogenetic analyses of ITS-LSU rDNA sequence data demonstrate that Melanconis species occurring on Juglandaceae are phylogenetically distinct from Melanconis s.str., and therefore the new genus Juglanconis is described. Morphologically, the genus Juglanconis differs from Melanconis by light to dark brown conidia with irregular verrucae on the inner surface of the conidial wall, while in Melanconis s.str. they are smooth. Juglanconis forms a separate clade not affiliated with a described family of Diaporthales, and the family Juglanconidaceae is introduced to accommodate it. Data of macro- and microscopic morphology and phylogenetic multilocus analyses of partial nuSSU-ITS-LSU rDNA, cal, his, ms204, rpb1, rpb2, tef1 and tub2 sequences revealed...
Tipo: Article / Letter to the editor Palavras-chave: Ascomycota; Diaporthales; Molecular phylogeny; New species; Pathogen; Systematics.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/622492
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Laciniporus arabicus gen. et sp. nov. (Dinophyceae, Peridiniales), a new thecate, marine, sand-dwelling dinoflagellate from the northern Indian Ocean (Arabian Sea) ArchiMer
Saburova, Maria; Chomérat, Nicolas.
A new thecate, photosynthetic, sand‐dwelling marine dinoflagellate, Laciniporus arabicus gen. et sp. nov., is described from the subtidal sediments of the Omani coast in the Arabian Sea, northern Indian Ocean, based on detailed morphological and molecular data. Cells of L. arabicus are small (16.2‐30.1 μm long and 13.1‐23.2 μm wide), dorsoventrally compressed, with a small apical flap‐shaped projection pointing to the left. The thecal plate pattern is distinguished by minute first precingular plate and sulcus, which extends into the epitheca, with large anterior and right sulcal plates. The Kofoidian thecal tabulation is Po, X, 4′, 2a, 7′′, 6c, 6s, 5′′′, 2′′′′. Morphologically, the revealed plate pattern has an affinity to the Peridiniales, and LSU rDNA...
Tipo: Text Palavras-chave: Arabian Sea; Benthic dinoflagellates; Dinophyceae; Laciniporus arabicus; Molecular phylogeny; Morphology; Oman; Peridiniales; Taxonomy.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00454/56614/58315.pdf
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Meiofaunal cryptic species challenge species delimitation: the case of the Monocelis lineata (Platyhelminthes: Proseriata) species complex Naturalis
Scarpa, F.; Cossu, P.; Lai, T.; Sanna, D.; Curini-Galletti, M.; Casu, M..
Given the pending biodiversity crisis, species delimitation is a critically important task in conservation biology, but its efficacy based on single lines of evidence has been questioned as it may not accurately reflect species limits and relationships. Hence, the use of multiple lines of evidence has been portrayed as a means to overcome identification issues arising from gene/ species tree discordance, morphological convergence or recent adaptive radiations. Here, the integrative taxonomic approach has been used to address the study of the Monocelis lineata species complex. The taxonomic resolution of the complex is challenging, as the species lacks sclerotised copulatory structures, which as a rule of thumb aid identification in Proseriata. Eighteen...
Tipo: Article / Letter to the editor Palavras-chave: Integrative taxonomic approach; Meiofauna conservation; Molecular dating; Molecular phylogeny; Molecular taxonomy; RDNA 18S-28S.
Ano: 2016 URL: http://www.repository.naturalis.nl/record/607690
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Molecular diversity among domestic guinea-pigs (Cavia porcellus) and their close phylogenetic relationship with the Andean wild species Cavia tschudii RChHN
SPOTORNO,ÁNGEL E; VALLADARES,JOHN P; MARÍN,JUAN C; ZEBALLOS,HORACIO.
To investigate the origin and diversity of domestic guinea-pigs Cavia porcellus (Linnaeus, 1758; Rodentia, Caviidae), we sequenced the mitochondrial cytochrome b gene of 12 domestic and 10 wild specimens from six species, including the two presumed as ancestral to the domestic one: Cavia tschudii and Cavia aperea. All maximum parsimony and maximum likelihood analyses grouped C. porcellus with C. tschudii (mean K2P distance = 3.2 %); best trees had 609 steps (CI = 0.796; Bremer support Index (SI) = 28), and a _Ln = 4419.52, with 100 % and 97 % bootstrap support respectively. This clade, supported by three substitutions and 96 % bootstrap, is also obtained in the cladistic analysis of corresponding amino acids. When the C. aperea node was forced to join C....
Tipo: Journal article Palavras-chave: Andes; Cavidae; Cytochrome b; Domestication; Guinea pig; Molecular phylogeny.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000200004
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Molecular phylogeny of Dioscorea (Dioscoreaceae) in East and Southeast Asia Naturalis
Hsu, K.-M.; Tsai, J.-L.; Chen, M.-Y.; Ku, H.-M.; Liu, S.-C..
The phylogenetic relationships of Dioscorea, including sections Botryosicyos, Combilium, Enantiophyllum, Lasiophyton, Opsophyton, Shannicorea and Stenophora, are reconstructed with chloroplast trnL-F, matK, rbcL and atpB-rbcL sequence data, covering a total of 72 accessions including 48 ingroup species and five outgroup species from East and Southeast Asia. The seven Asian sections do reflect the genetic relationships among the species that they include. In summary, D. sect. Combilium and sect. Shannicorea are recognized as closely related sections with moderate support. The results also support Burkills treatment of subsect. Euopsophyton (D. bulbifera) as sect. Opsophyton and subsect. Macrourae (D. sansibarensis) as sect. Macroura. In addition, there is a...
Tipo: Article / Letter to the editor Palavras-chave: AtpB-rbcL; Dioscorea; MatK; Molecular phylogeny; RbcL; TrnL-F.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/524972
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Molecular phylogeny of the hawk-eagles (genus Spizaetus) Naturalis
Gamauf, A.; Gjershaug, J.O.; Kvaløy, K.; Røv, N.; Haring, E..
Tipo: Article / Letter to the editor Palavras-chave: Molecular phylogeny; Hawk eagles; Genus Spizaetus; 42.83.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/210823
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Moniliellomycetes and Malasseziomycetes, two new classes in Ustilaginomycotina Naturalis
Wang, Q.-M.; Theelen, B.; Groenewald, M.; Bai, F.-Y.; Boekhout, T..
Ustilaginomycotina (Basidiomycota, Fungi) has been reclassified recently based on multiple gene sequence analyses. However, the phylogenetic placement of two yeast-like genera Malassezia and Moniliella in the subphylum remains unclear. Phylogenetic analyses using different algorithms based on the sequences of six genes, including the small subunit (18S) ribosomal DNA (rDNA), the large subunit (26S) rDNA D1/D2 domains, the internal transcribed spacer regions (ITS 1 and 2) including 5.8S rDNA, the two subunits of RNA polymerase II (RPB1 and RPB2) and the translation elongation factor 1-α (EF1-α), were performed to address their phylogenetic positions. Our analyses indicated that Malassezia and Moniliella represented two deeply rooted lineages within...
Tipo: Article / Letter to the editor Palavras-chave: Fungi; Molecular phylogeny; Smuts; Taxonomy; Yeasts.
Ano: 2014 URL: http://www.repository.naturalis.nl/record/531911
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Morphology and molecular phylogeny of prorocentrum consutum sp. nov. (dinophyceae), a new benthic dinoflagellate from south Brittany (northwestern France) ArchiMer
Chomerat, Nicolas; Sellos, Daniel Y.; Zentz, Frederic; Nezan, Elisabeth.
A new marine benthic Prorocentrum species from sandy habitats of South Brittany (northwestern France), P. consutum sp. nov., is described using LM and SEM and molecular phylogenetic analyses. Cells have a subcircular to broadly ovoid shape and are plainly flattened. They are 57-61 lm long and 52-55 lm wide. A central pyrenoid is present, and the kidney-shaped nucleus is positioned in the posterior region. In right valve view, the periflagellar area is deeply excavated, and the left valve forms a prominent apical ridge. The periflagellar area consists of nine platelets, and a small narrow collar is present around the flagellar pore. The ornamentation of this new species is very peculiar and is characterized by a ring of round areolae located at the...
Tipo: Text Palavras-chave: Taxonomy; SSU rDNA; SEM; Prorocentrum; Nuclear DNA; Molecular phylogeny; LSU rDNA; Dinoflagellates.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/2010/publication-7449.pdf
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Morpho-molecular diversity and phylogeny of Bysmatrum (Dinophyceae) from the South China Sea and France ArchiMer
Luo, Zhaohe; Lim, Zhen Fei; Mertens, Kenneth; Gurdebeke, Pieter; Bogus, Kara; Carbonell-moore, Maria Consuelo; Vrielinck, Henk; Leaw, Chui Pin; Lim, Po Teen; Chomerat, Nicolas; Li, Xintian; Gu, Haifeng.
The dinoflagellate genus Bysmatrum encompasses five epibenthic or tide-pool species and has been characterized by separated anterior intercalary plates. In the present study, we obtained six strains of Bysmatrum from the South China Sea and French Atlantic coast by isolating single cells/cysts from plankton and sediment samples. All strains were examined with light microscopy and scanning electron microscopy. Based on morphological observations, three strains were identified as Bysmatrum subsalsum, characterized by the elongated and rectangular first and a hexagonal second anterior intercalary plate. They differ from each other in the number of sulcal lists and the configuration of the first anterior intercalary plate. One strain was identified as...
Tipo: Text Palavras-chave: Benthic dinoflagellate; Biogeography; Bysmatrum granulosum; Bysmatrum gregarium; Bysmatrum subsalsum; Eyespot; Molecular phylogeny.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00450/56188/57872.pdf
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New species of Hohenbuehelia, with comments on the Hohenbuehelia atrocoerulea – Nematoctonus robustus species complex Naturalis
Consiglio, G.; Setti, L.; Thorn, R.G..
Four new species of Hohenbuehelia (Fungi: Pleurotaceae) are described in the group of Hohenbuehelia atrocoerulea and Hohenbuehelia grisea. Hohenbuehelia algonquinensis, found on Pinus in Ontario, Canada, may be distinguished macroscopically from bluish collections of H. atrocoerulea and watery grey-brown collections of H. grisea by its coal-black pileus. Hohenbuehelia canadensis, on or associated with Pinus in both Ontario and Alberta, Canada, and Hohenbuehelia nimueae, on Salix in Ontario and Abies in Wyoming, USA, have similarly dark fruiting bodies and were previously misidentified as H. approximans (which we treat as a synonym of H. grisea), H. atrocoerulea, H. mustialensis or H. nigra. The latter species is shown to be a member of Resupinatus, despite...
Tipo: Article / Letter to the editor Palavras-chave: 28S; 5 new taxa; Barcoding; Mushrooms; Molecular phylogeny; Nematophagous; Resupinatus niger.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/659253
Registros recuperados: 37
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