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Novel fungal genera and species associated with the sooty blotch and flyspeck complex on apple in China and the USA Naturalis
Yang, H.L.; Sun, G.Y.; Batzer, J.C.; Crous, P.W.; Groenewald, J.Z.; Gleason, M.L..
Fungi in the sooty blotch and flyspeck (SBFS) complex cause blemishes on apple and pear fruit that result in economic losses for growers. The SBFS fungi colonise the epicuticular wax layer of pomaceous fruit but do not invade the cuticle. Fungi causing fuliginous and punctate mycelial types on apple are particularly difficult to identify based on morphological criteria because many species in the SBFS complex share the same mycelial phenotypes. We compared the morphology and nuclear ribosomal DNA phylogeny (ITS, LSU) of 11 fungal strains isolated from SBFS blemishes on apple obtained from two provinces in China and five states in the USA. Parsimony analysis, supported by cultural characteristics and morphology in vitro, provided support to delimit the...
Tipo: Article / Letter to the editor Palavras-chave: Anamorph; SBFS; Taxonomy.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/532099
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Pyricularia graminis-tritici, a new Pyricularia species causing wheat blast Naturalis
Castroagudín, V.L.; Moreira, D.A.S. Pereira, S.S. Moreira, P.C. Brunner, J.L.N. Maciel, P.W. Crous, B.A. McDonald, E. Alves, P.C. Ceresini, S.I.; Pereira, S.S. Moreira, P.C. Brunner, J.L.N. Maciel, P.W. Crous, B.A. McDonald, E. Alves, P.C. Ceresini, D.A.S.; Moreira, P.C. Brunner, J.L.N. Maciel, P.W. Crous, B.A. McDonald, E. Alves, P.C. Ceresini, S.S.; Brunner, J.L.N. Maciel, P.W. Crous, B.A. McDonald, E. Alves, P.C. Ceresini, P.C.; Maciel, P.W. Crous, B.A. McDonald, E. Alves, P.C. Ceresini, J.L.N.; Crous, P.W.; McDonald, B.A.; Alves, E.; Ceresini, P.C..
Pyricularia oryzae is a species complex that causes blast disease on more than 50 species of poaceous plants. Pyricularia oryzae has a worldwide distribution as a rice pathogen and in the last 30 years emerged as an important wheat pathogen in southern Brazil. We conducted phylogenetic analyses using 10 housekeeping loci for 128 isolates of P. oryzae sampled from sympatric populations of wheat, rice, and grasses growing in or near wheat fields. Phylogenetic analyses grouped the isolates into three major clades. Clade 1 comprised isolates associated only with rice and corresponds to the previously described rice blast pathogen P. oryzae pathotype Oryza (PoO). Clade 2 comprised isolates associated almost exclusively with wheat and corresponds to the...
Tipo: Article / Letter to the editor
Ano: 2016 URL: http://www.repository.naturalis.nl/record/611858
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Fungal Planet description sheets: 154–213 Naturalis
Crous, P.W.; Wingfield, M.J.; Guarro, J.; Cheewangkoon, R.; Bank, M. van der; Swart, W.J.; Stchigel, A.M.; Cano-Lira, J.F.; Roux, J.; Madrid, H.; Damm, U.; Wood, A.R.; Shuttleworth, L.A.; Hodges, C.S.; Munster, M.; Jesús Yáñez-Morales, M. de; Zúñiga-Estrada, L.; Cruywagen, E.M.; Hoog, G.S. de; Silvera, C.; Najafzadeh, J.; Davison, E.M.; Davison, P.J.N.; Barrett, M.D.; Barrett, R.L.; Manamgoda, D.S.; Minnis, A.M.; Kleczewski, N.M.; Flory, S.L.; Castlebury, L.A.; Clay, K.; Hyde, K.D.; Maússe-Sitoe, S.N.D.; Chen, Shuaifei; Lechat, C.; Hairaud, M.; Lesage-Meessen, L.; Pawłowska, J.; Wilk, M.; Śliwińska-Wyrzychowska, A.; Mętrak, M.; Wrzosek, M.; Pavlic-Zupanc, D.; Maleme, H.M.; Slippers, B.; Mac Cormack, W.P.; Archuby, D.I.; Grünwald, N.J.; Tellería, M.T.; Dueñas, M.; Martín, M.P.; Marincowitz, S.; Beer, Z.W. de; Perez, C.A.; Gené, J.; Marin-Felix, Y.; Groenewald, J.Z..
Novel species of microfungi described in the present study include the following from South Africa: Camarosporium aloes, Phaeococcomyces aloes and Phoma aloes from Aloe, C. psoraleae, Diaporthe psoraleae and D. psoraleae-pinnatae from Psoralea, Colletotrichum euphorbiae from Euphorbia, Coniothyrium prosopidis and Peyronellaea prosopidis from Prosopis, Diaporthe cassines from Cassine, D. diospyricola from Diospyros, Diaporthe maytenicola from Maytenus, Harknessia proteae from Protea, Neofusicoccum ursorum and N. cryptoaustrale from Eucalyptus, Ochrocladosporium adansoniae from Adansonia, Pilidium pseudoconcavum from Greyia radlkoferi, Stagonospora pseudopaludosa from Phragmites and Toxicocladosporium ficiniae from Ficinia. Several species were also...
Tipo: Article / Letter to the editor Palavras-chave: ITS DNA barcodes; LSU; Novel fungal species; Systematics.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/531798
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Phylogeny of Sarocladium (Hypocreales) Naturalis
Giraldo, A.; Gené, J.; Sutton, D.A.; Madrid, H.; Hoog, G.S. de; Cano, J.; Decock, C.; Crous, P.W.; Guarro, J..
The circumscription of the genus Acremonium (Hypocreales) was recently reviewed on the basis of a DNA phylogenetic study. Several species were subsequently transferred to Sarocladium, but the relationships between both genera remained unresolved. Based on multilocus phylogenetic inferences combined with phenotypic data, we have revised the species concepts within Sarocladium and some genetically related species of Acremonium. As a result of these studies, six species are described as new, viz. S. bifurcatum, S. gamsii, S. hominis, S. pseudostrictum, S. subulatum and S. summerbellii. In addition, the new combinations S. implicatum and S. terricola are proposed for A. implicatum and A. terricola, respectively. Sarocladium attenuatum is confirmed as synonym...
Tipo: Article / Letter to the editor Palavras-chave: Acremonium; Hypocreales; Phylogeny; Sarocladium; Taxonomy.
Ano: 2015 URL: http://www.repository.naturalis.nl/record/560052
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Reappraisal of the genus Alternariaster (Dothideomycetes) Naturalis
Alves, J.L.; Woudenberg, J.H.C.; Duarte, L.L.; Crous, P.W.; Barreto, R.W..
Alternariaster was erected in 2007 to accommodate Alternaria helianthi, a fungal species known to cause leaf spots on Helianthus annuus (sunflower). It was segregated from Alternaria based on conidial morphology. Recently an unknown alternaria-like dematiaceous fungus was found associated with leaf spots on Bidens sulphurea (yellow cosmos) in Brazil. Based on a multi-gene phylogeny of parts of the ITS and LSU genes, this fungus was placed within the Leptosphaeriaceae with Alternariaster helianthi as its closest neighbour. Additional genes sequenced, RPB2 and GAPDH, confirmed this close relationship. The fungus on B. sulphurea has smaller conidia, 50–97.5 × 12.5–20 μm, compared to Al. helianthi, 80–160 × 18–30 μm, and lacks oblique or transverse septa which...
Tipo: Article / Letter to the editor Palavras-chave: Alternaria; Fungal pathogens; Host-range; Multi-gene phylogeny.
Ano: 2013 URL: http://www.repository.naturalis.nl/record/531881
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A fissitunicate ascus mechanism in the Calosphaeriaceae, and novel species of Jattaea and Calosphaeria on Prunus wood Naturalis
Damm, U.; Crous, P.W.; Fourie, P.H..
During a survey of Prunus wood from South Africa, isolations were made of three presumably Calosphaerialean fungi that formed hyphomycetous, phialidic anamorphs in culture. In order to reveal the phylogenetic relationship of these fungi, they were characterised on a morphological and molecular (LSU and ITS rDNA) basis. Two isolates that formed a teleomorph in culture are newly described as Calosphaeria africana sp. nov. Although asci of Calosphaeria are characterised by having non-amyloid apical rings, two functional wall layers were observed in asci of C. africana, which has hitherto not been observed in any member of the Calosphaeriaceae. However, Calosphaeriaceae (Calosphaeriales, Sordariomycetes) are not closely related to other bitunicate fungi like...
Tipo: Article / Letter to the editor Palavras-chave: Apical ring; Ascospore discharge; Ascus dehiscence; Beta-tubulin; Calosphaeria; Calosphaeriaceae; ITS; Jattaea; LSU; Phialophora; Prunus; SSU; Systematics.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/531626
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Host specificity and speciation of Mycosphaerella and Teratosphaeria species associated with leaf spots of Proteaceae Naturalis
Crous, P.W.; Summerell, B.A.; Mostert, L.; Groenewald, J.Z..
Cheirosporium gen. nov. is characterised by the production of sporodochial conidiomata, semi-macronematous to macronematous onidiophores that possess several distinct sterile branches, and cheiroid, smooth-walled conidia with rhexolytic secession. The 28S rDNA and ITS rDNA operon of this taxon were amplified and sequenced. A BLAST search revealed low homology between Cheirosporium triseriale and existing sequences in public databases, supporting the hypothesis that the species is new to science. Phylogenetic analysis showed that C. triseriale groups with Dictyosporium and allied species, and nests within the Pleosporales (Dothideomycetes, Ascomycota).heirosporium is morphologically distinct from the cheirosporous genera Cheiromyces, Cheiromycina,...
Tipo: Article / Letter to the editor Palavras-chave: ITS; Leucadendron; Leucospermum; Mycosphaerella; Protea; Teratosphaeria.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/532268
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Fungal Planet description sheets: 716–784 Naturalis
Crous, P.W.; Wingfield, M.J.; Burgess, T.I.; Hardy, G.E.St.J.; Gené, J.; Guarro, J.; Baseia, I.G.; García, D.; Gusmão, L.F.P.; Souza-Motta, C.M.; Rodríguez-Andrade, E.; Saba, M.; Schauflerová, A.; Shivas, R.G.; Simonini, G.; Siqueira, J.P.Z.; Sousa, J.O.; Stajsic, V.; Svetasheva, T.; Tan, Y.P.; Thangave, R.; Tkalčec, Z.; Ullah, S.; Valente, P.; Valenzuela-Lopez, N.; Abrinbana, M.; Viana Marques , D.A.; Wong, P.T.W.; Xavier de Lima, V.; Groenewald, J.Z.; Adamčík, S.; Barili, A.; Barnes, C.W.; Bezerra, J.D.P.; Bordallo, J.J.; Cano-Lira, J.F.; Oliveira, R.J.V. de; Ercole, E.; Hubka, V.; Iturrieta-González, I.; Kubátová, A.; Martín, M.P.; Moreau, P.-A.; Morte, A.; Ordoñez, M.E.; Rodríguez, A.; Stchige, A.M.; Vizzini, A.; Abdollahzadeh, J.; Abreu, V.P.; Adamčíková, K.; Albuquerque, G.M.R.; Alexandrova, A.V.; Álvarez Duarte, E.; Armstrong-Cho, C.; Banniza, S.; Barbosa , R.N.; Bellanger, J.-M.; Bezerra, J.L.; Cabral , T.S.; Caboň, M.; Caicedo , E.; Cantillo, T.; Carnegie, A.J.; Carmo, L.T.; Castañeda-Ruiz, R.F.; Clement, C.R.; Čmoková, A.; Conceição, L.B.; Cruz, R.H.S.F.; Damm, U.; Silva, B.D.B. da; Silva, G.A. da; Silva, R.M.F. da; Santiago, A.L.C.M. de A.; Oliveira, L.F. de; Souza , C.A.F. de; Déniel, F.; Dima , B.; Dong, G.; Edwards, J.; Félix, C.R.; Fournier, J.; Gibertoni, T.B.; Hosaka, K.; Iturriaga M. , T.; Jadan, M.; Jany, J.-L.; Jurjević, Z.; Kolařík, M.; Kušan, I.; Landell, M.F.; Leite Cordeiro, T.R.; Lima, D.X.; Loizides , M.; Luo, S.; Machado, A.R.; Madrid, H.; Magalhães, O.M.C.; Marinho, P.; Matočec, N.; Mešić, A.; Miller, A.N.; Morozova, O.V.; Neves , R.P.; Nonaka, K.; Nováková, A.; Oberlies, N.H.; Oliveira-Filho, J.R.C.; Oliveira, T.G.L.; Papp, V.; Pereira, O.L.; Perrone, G.; Peterson, S.W.; Pham, T.H.G.; Raja, H.A.; Raudabaugh, D.B.; Řehulka, J..
Novel species of fungi described in this study include those from various countries as follows: Australia, Chaetopsina eucalypti on Eucalyptus leaf litter, Colletotrichum cobbittiense from Cordyline stricta × C. australis hybrid, Cyanodermella banksiae on Banksia ericifolia subsp. macrantha, Discosia macrozamiae on Macrozamia miquelii, Elsinoë banksiigena on Banksia marginata, Elsinoë elaeocarpi on Elaeocarpus sp., Elsinoë leucopogonis on Leucopogon sp., Helminthosporium livistonae on Livistona australis, Idriellomyces eucalypti (incl. Idriellomyces gen. nov.) on Eucalyptus obliqua, Lareunionomyces eucalypti on Eucalyptus sp., Myrotheciomyces corymbiae (incl. Myrotheciomyces gen. nov., Myrotheciomycetaceae fam. nov.), Neolauriomyces eucalypti (incl....
Tipo: Article / Letter to the editor Palavras-chave: ITS nrDNA barcodes; LSU; New taxa; Systematics.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/655759
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Cymadothea trifolii, an obligate biotrophic leaf parasite of Trifolium, belongs to Mycosphaerellaceae as shown by nuclear ribosomal DNA analyses Naturalis
Simon, U.K.; Groenewald, J.Z.; Crous, P.W..
The ascomycete Cymadothea trifolii, a member of the Dothideomycetes, is unique among obligate biotrophic fungi in its capability to only partially degrade the host cell wall and in forming an astonishingly intricate interaction apparatus (IA) in its own hyphae, while the attacked host plant cell is triggered to produce a membranous bubble opposite the IA. However, no sequence data are currently available for this species. Based on molecular phylogenetic results obtained from complete SSU and partial LSU data, we show that the genus Cymadothea belongs to the Mycosphaerellaceae (Capnodiales, Dothideomycetes). This is the first report of sequences obtained for an obligate biotrophic member of Mycosphaerellaceae.
Tipo: Article / Letter to the editor Palavras-chave: Biotrophy; Capnodiales; Cymadothea trifolii; Dothideomycetes; GenomiPhi; LSU; Mycosphaerella kilianii; Mycosphaerellaceaesooty/black; Blotch of clover; SSU.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/532112
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Calonectria (Cylindrocladium) species associated with dying Pinus cuttings Naturalis
Lombard, L.; Rodas, C.A.; Crous, P.W.; Wingfield, B.D.; Wingfield, M.J..
Calonectria (Ca.) species and their Cylindrocladium (Cy.) anamorphs are well-known pathogens of forest nursery plants in subtropical and tropical areas of the world. An investigation of the mortality of rooted Pinus cuttings in a commercial forest nursery in Colombia led to the isolation of two Cylindrocladium anamorphs of Calonectria species. The aim of this study was to identify these species using DNA sequence data and morphological comparisons. Two species were identified, namely one undescribed species, and Cy. gracile, which is allocated to Calonectria as Ca. brassicae. The new species, Ca. brachiatica, resides in the Ca. brassicae species complex. Pathogenicity tests with Ca. brachiatica and Ca. brassicae showed that both are able to cause disease...
Tipo: Article / Letter to the editor Palavras-chave: Β-tubulin; Calonectria; Cylindrocladium; Histone; Pinus; Root disease.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/532052
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Niche sharing reflects a poorly understood biodiversity phenomenon Naturalis
Crous, P.W.; Wingfield, M.J.; Groenewald, J.Z..
Eucalyptus spp. are susceptible to a large number of foliar pathogens, some of which can cause serious defoliation and die-back. In this study, a single leaf spot on a Eucalyptus leaf collected in Madagascar revealed an unusual association of microfungi with disease symptoms. Initial observations indicated that the leaf spot was associated with Mycosphaerella marksii, a common pathogen of eucalypts. However, more intensive scrutiny showed the presence of several other microfungi co-occurring in this, and other leaf spots on the leaf. A total of 41 single conidial propagules were subsequently obtained from a single lesion for morphological study and DNA sequence comparisons. Based on these data, 11 members of the Capnodiales, including one species of...
Tipo: Article / Letter to the editor Palavras-chave: Eucalyptus; ITS; Mycosphaerella; Systematics; Teratosphaeria.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/531761
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DNA barcoding of Mycosphaerella species of quarantine importance to Europe Naturalis
Quaedvlieg, W.; Groenewald, J.Z.; Jesús Yáñez-Morales, M. de; Crous, P.W..
The EU 7th Framework Program provided funds for Quarantine Barcoding of Life (QBOL) to develop a quick, reliable and accurate DNA barcode-based diagnostic tool for selected species on the European and Mediterranean Plant Protection Organization (EPPO) A1/A2 quarantine lists. Seven nuclear genomic loci were evaluated to determine those best suited for identifying species of Mycosphaerella and/or its associated anamorphs. These genes included β-tubulin (Btub), internal transcribed spacer regions of the nrDNA operon (ITS), 28S nrDNA (LSU), Actin (Act), Calmodulin (Cal), Translation elongation factor 1-alpha (EF-1α) and RNA polymerase II second largest subunit (RPB2). Loci were tested on their Kimura-2-parameter-based inter- and intraspecific variation, PCR...
Tipo: Article / Letter to the editor Palavras-chave: EPPO; Lecanosticta; Q-bank; QBOL.
Ano: 2012 URL: http://www.repository.naturalis.nl/record/531831
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Removing chaos from confusion: assigning names to common human and animal pathogens in Neocosmospora Naturalis
Sandoval-Denis, M.; Crous, P.W..
The genus Neocosmospora encompasses highly prevalent and aggressive human and animal fungal pathogens. Here we assign formal descriptions and Latin binomials to some of the most clinically relevant phylogenetic species of the genus. Three new species, named Neocosmospora catenata, N. gamsii and N. suttoniana (previously assigned to the informal names ‘Fusarium’ solani species complex (FSSC) lineages, FSSC 43, FSSC 7 and FSSC 20, respectively) are described on the basis of multilocus phylogenetic analyses (using EF-1α, ITS, LSU and RPB2 loci) and morphological characters. Lineage FSSC 9 is conspecific with the ex-type strain of Cylindrocarpon tonkinense, thus the new combination Neocosmospora tonkinensis is proposed. In addition, and based on the latest...
Tipo: Article / Letter to the editor Palavras-chave: Eight new taxa; Fusarium; Neocosmospora; Pathogens; Phylogeny; Systematics.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/647050
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Seiridium (Sporocadaceae): an important genus of plant pathogenic fungi Naturalis
Bonthond, G.; Sandoval-Denis, M.; Groenewald, J.Z.; Crous, P.W..
The genus Seiridium includes multiple plant pathogenic fungi well-known as causal organisms of cankers on Cupressaceae. Taxonomically, the status of several species has been a topic of debate, as the phylogeny of the genus remains unresolved and authentic ex-type cultures are mostly absent. In the present study, a large collection of Seiridium cultures and specimens from the CBS and IMI collections was investigated morphologically and phylogenetically to resolve the taxonomy of the genus. These investigations included the type material of the most important Cupressaceae pathogens, Seiridium cardinale, S. cupressi and S. unicorne. We constructed a phylogeny of Seiridium based on four loci, namely the ITS rDNA region, and partial translation elongation...
Tipo: Article / Letter to the editor Palavras-chave: Appendage-bearing conidia; Canker pathogen; Cupressus; Pestalotioid fungi; Systematics.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/642630
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Families and genera of diaporthalean fungi associated with canker and dieback of tree hosts Naturalis
Fan, X.L.; Bezerra, J.D.P.; Tian, C.M.; Crous, P.W..
In this study we accept 25 families in Diaporthales based on phylogenetic analyses using partial ITS, LSU, rpb2 and tef1-α gene sequences. Four different families associated with canker and dieback of tree hosts are morphologically treated and phylogenetically compared. These include three new families (Diaporthostomataceae, Pseudomelanconidaceae, Synnemasporellaceae), and one new genus, Dendrostoma (Erythrogloeaceae). Dendrostoma is newly described from Malus spectabilis, Osmanthus fragrans and Quercus acutissima having fusoid to cylindrical, bicellular ascospores, with three new species namely D. mali, D. osmanthi and D. quercinum. Diaporthostomataceae is characterised by conical and discrete perithecia with bicellular, fusoid ascospores on branches of...
Tipo: Article / Letter to the editor Palavras-chave: Ascomycota; Phylogeny; Sordariomycetes; Taxonomy.
Ano: 2018 URL: http://www.repository.naturalis.nl/record/643333
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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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Phylogeny and taxonomy of obscure genera of microfungi Naturalis
Crous, P.W.; Braun, U.; Wingfield, M.J.; Wood, A.R.; Shin, H.D.; Summerell, B.A.; Alfenas, A.C.; Cumagun, C.J.R.; Groenewald, J.Z..
The recently generated molecular phylogeny for the kingdom Fungi, on which a new classification scheme is based, still suffers from an under representation of numerous apparently asexual genera of microfungi. In an attempt to populate the Fungal Tree of Life, fresh samples of 10 obscure genera of hyphomycetes were collected. These fungi were subsequently established in culture, and subjected to DNA sequence analysis of the ITS and LSU nrRNA genes to resolve species and generic questions related to these obscure genera. Brycekendrickomyces (Herpotrichiellaceae) is introduced as a new genus similar to, but distinct from Haplographium and Lauriomyces. Chalastospora is shown to be a genus in the Pleosporales, with two new species, C. ellipsoidea and C....
Tipo: Article / Letter to the editor Palavras-chave: Brycekendrickomyces; Chalastospora; Cyphellophora; Dictyosporium; Edenia; Phylogeny; Taxonomy; Thedgonia; Trochophora; Verrucisporota; Vonarxia; Xenostigmina.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/531925
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Novel Curvularia species from clinical specimens Naturalis
Madrid, H.; da Cunha, K.C.; Gené, J.; Dijksterhuis, J.; Cano, J.; Sutton, D.A.; Guarro, J.; Crous, P.W..
The fungal genus Curvularia includes numerous plant pathogens and some emerging opportunistic pathogens of humans. In a previous study we used morphology and sequences of the nuclear ribosomal internal transcribed spacer region (ITS) and the glyceraldehyde-3-phosphate dehydrogenase (gpd) gene to identify species within a set of 99 clinical Curvularia isolates from the USA. Seventy-two isolates could be identified while the remaining 27 isolates belonged in three unclassified clades that were tentatively labelled Curvularia sp. I, II and III. In the present study, we further assess the taxonomic placement of these isolates using sequences of ITS, gpd, the large subunit rDNA, and the second largest subunit of RNA polymerase II. DNA sequence comparisons with a...
Tipo: Article / Letter to the editor Palavras-chave: Bipolaris; Curvularia; Gpd; ITS; LSU; Phylogeny; RPB2; Systematics.
Ano: 2014 URL: http://www.repository.naturalis.nl/record/532180
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Phylogeny and taxonomy of the genus Gliocephalotrichum Naturalis
Lombard, L.; Serrato-Diaz, L.M.; Cheewangkoon, R.; French-Monar, R.D.; Decock, C.; Crous, P.W..
Species in the genus Gliocephalotrichum (= Leuconectria) (Hypocreales, Nectriaceae) are soilborne fungi, associated with post-harvest fruit spoilage of several important tropical fruit crops. Contemporary taxonomic studies of these fungi have relied on morphology and DNA sequence comparisons of the internal transcribed spacer region of the nuclear rDNA (ITS) and the β-tubulin gene regions. Employing DNA sequence data from four loci (β-tubulin, histone H3, ITS, and translation elongation factor 1-alpha) and morphological comparisons, the taxonomic status of the genus Gliocephalotrichum was re-evaluated. As a result five species are newly described, namely G. humicola (Taiwan, soil), G. mexicanum (rambutan fruit from Mexico), G. nephelii (rambutan fruit from...
Tipo: Article / Letter to the editor Palavras-chave: Gliocephalotrichum; Leuconectria; Phylogeny; Taxonomy.
Ano: 2014 URL: http://www.repository.naturalis.nl/record/532119
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Molecular and phenotypic characterisation of novel Phaeoacremonium species isolated from esca diseased grapevines Naturalis
Essakhi, S.; Mugnai, L.; Crous, P.W.; Groenewald, J.Z.; Surico, G..
Petri disease and esca are very destructive grapevine decline diseases that occur in most countries where grapevine (Vitis vinifera) is cultivated. Phaeoacremonium species are among the principal hyphomycetes associated with symptoms of the two diseases, producing a range of enzymes and phytotoxic metabolites. The present study compared the phylogeny of a global collection of 118 Phaeoacremonium isolates from grapevines, in order to gain a better understanding of their involvement in Petri disease and esca. Phylogenetic analyses of combined DNA sequence datasets of actin and β-tubulin genes revealed the presence of 13 species of Phaeoacremonium solated from esca diseased grapevines. Phaeoacremonium aleophilum was the most frequently isolated species with...
Tipo: Article / Letter to the editor Palavras-chave: Actin; Β-tubulin; Esca; Morphology; Phaeoacremonium; Phylogeny.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/532098
Registros recuperados: 77
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