Ochratoxin production and taxonomy of the yellow aspergilli (Aspergillus section Circumdati).


:Aspergillus section Circumdati or the Aspergillus ochraceus group, includes species with rough walled stipes, biseriate conidial heads, yellow to ochre conidia and sclerotia that do not turn black. Several species are able to produce mycotoxins including ochratoxins, penicillic acids, and xanthomegnins. Some species also produce drug lead candidates such as the notoamides. A polyphasic approach was applied using morphological characters, extrolite data and partial calmodulin, β-tubulin and ITS sequences to examine the evolutionary relationships within this section. Based on this approach the section Circumdati is revised and 27 species are accepted, introducing seven new species: A. occultus, A. pallidofulvus, A. pulvericola, A. salwaensis, A. sesamicola, A. subramanianii and A. westlandensis. In addition we correctly apply the name A. fresenii (≡ A. sulphureus (nom. illeg.)). A guide for the identification of these 27 species is provided. These new species can be distinguished from others based on morphological characters, sequence data and extrolite profiles. The previously described A. onikii and A. petrakii were found to be conspecific with A. ochraceus, whilst A. flocculosus is tentatively synonymised with A. ochraceopetaliformis, despite extrolite differences between the two species. Based on the extrolite data, 13 species of section Circumdati produce large amounts of ochratoxin A: A. affinis, A. cretensis, A. fresenii, A. muricatus, A. occultus, A. ochraceopetaliformis (A. flocculosus), A. ochraceus, A. pseudoelegans, A. pulvericola, A. roseoglobulosus, A. sclerotiorum, A. steynii and A. westerdijkiae. Seven additional species produce ochratoxin A inconsistently and/or in trace amounts: A. melleus, A. ostianus, A. persii, A. salwaensis, A. sesamicola, A. subramanianii and A. westlandensis. The most important species regarding potential ochratoxin A contamination in agricultural products are A. ochraceus, A. steynii and A. westerdijkiae.


Stud Mycol


Studies in mycology


Visagie CM,Varga J,Houbraken J,Meijer M,Kocsubé S,Yilmaz N,Fotedar R,Seifert KA,Frisvad JC,Samson RA




Has Abstract


2014-06-01 00:00:00












  • Common but different: The expanding realm of Cladosporium.

    abstract::The genus Cladosporium (Cladosporiaceae, Dothideomycetes), which represents one of the largest genera of dematiaceous hyphomycetes, has been intensively investigated during the past decade. In the process, three major species complexes (C. cladosporioides, C. herbarum and C. sphaerospermum) were resolved based on morp...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Bensch K,Groenewald JZ,Braun U,Dijksterhuis J,de Jesús Yáñez-Morales M,Crous PW

    更新日期:2015-09-01 00:00:00

  • Growth and hydrolase profiles can be used as characteristics to distinguish Aspergillus niger and other black aspergilli.

    abstract::Wild type Aspergillus niger isolates from different biotopes from all over the world were compared to each other and to the type strains of other black Aspergillus species with respect to growth and extracellular enzyme profiles. The origin of the A. niger isolate did not result in differences in growth profile with r...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Meijer M,Houbraken JA,Dalhuijsen S,Samson RA,de Vries RP

    更新日期:2011-06-30 00:00:00

  • Biodiversity of Aspergillus species in some important agricultural products.

    abstract::The genus Aspergillus is one of the most important filamentous fungal genera. Aspergillus species are used in the fermentation industry, but they are also responsible of various plant and food secondary rot, with the consequence of possible accumulation of mycotoxins. The aflatoxin producing A. flavus and A. parasitic...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Perrone G,Susca A,Cozzi G,Ehrlich K,Varga J,Frisvad JC,Meijer M,Noonim P,Mahakarnchanakul W,Samson RA

    更新日期:2007-01-01 00:00:00

  • Black fungi in lichens from seasonally arid habitats.

    abstract::We present a phylogenetic study of black fungi in lichens, primarily focusing on saxicolous samples from seasonally arid habitats in Armenia, but also with examples from other sites. Culturable strains of lichen-associated black fungi were obtained by isolation from surface-washed lichen material. Determination is bas...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Harutyunyan S,Muggia L,Grube M

    更新日期:2008-01-01 00:00:00

  • An overview of the taxonomy, phylogeny, and typification of nectriaceous fungi in Cosmospora, Acremonium, Fusarium, Stilbella, and Volutella.

    abstract::A comprehensive phylogenetic reassessment of the ascomycete genus Cosmospora (Hypocreales, Nectriaceae) is undertaken using fresh isolates and historical strains, sequences of two protein encoding genes, the second largest subunit of RNA polymerase II (rpb2), and a new phylogenetic marker, the larger subunit of ATP ci...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Gräfenhan T,Schroers HJ,Nirenberg HI,Seifert KA

    更新日期:2011-01-01 00:00:00

  • Venturiales.

    abstract::Members of Venturiales (Dothideomycetes) are widely distributed, and comprise saprobes, as well as plant, human and animal pathogens. In spite of their economic importance, the general lack of cultures and DNA data has resulted in taxa being poorly resolved. In the present study five loci, ITS, LSU rDNA, tef1, tub2 an...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Shen M,Zhang JQ,Zhao LL,Groenewald JZ,Crous PW,Zhang Y

    更新日期:2020-04-09 00:00:00

  • The genus Bipolaris.

    abstract::The genus Bipolaris includes important plant pathogens with worldwide distribution. Species recognition in the genus has been uncertain due to the lack of molecular data from ex-type cultures as well as overlapping morphological characteristics. In this study, we revise the genus Bipolaris based on DNA sequence data d...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Manamgoda DS,Rossman AY,Castlebury LA,Crous PW,Madrid H,Chukeatirote E,Hyde KD

    更新日期:2014-09-01 00:00:00

  • Aspergillus is monophyletic: Evidence from multiple gene phylogenies and extrolites profiles.

    abstract::Aspergillus is one of the economically most important fungal genera. Recently, the ICN adopted the single name nomenclature which has forced mycologists to choose one name for fungi (e.g. Aspergillus, Fusarium, Penicillium, etc.). Previously two proposals for the single name nomenclature in Aspergillus were presented:...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Kocsubé S,Perrone G,Magistà D,Houbraken J,Varga J,Szigeti G,Hubka V,Hong SB,Frisvad JC,Samson RA

    更新日期:2016-09-01 00:00:00

  • Colletotrichum - current status and future directions.

    abstract::A review is provided of the current state of understanding of Colletotrichum systematics, focusing on species-level data and the major clades. The taxonomic placement of the genus is discussed, and the evolution of our approach to species concepts and anamorph-teleomorph relationships is described. The application of ...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Cannon PF,Damm U,Johnston PR,Weir BS

    更新日期:2012-09-15 00:00:00

  • Alternaria redefined.

    abstract:UNLABELLED:Alternaria is a ubiquitous fungal genus that includes saprobic, endophytic and pathogenic species associated with a wide variety of substrates. In recent years, DNA-based studies revealed multiple non-monophyletic genera within the Alternaria complex, and Alternaria species clades that do not always correlat...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Woudenberg JH,Groenewald JZ,Binder M,Crous PW

    更新日期:2013-06-30 00:00:00

  • Biodiversity of the genus Cladophialophora.

    abstract::Cladophialophora is a genus of black yeast-like fungi comprising a number of clinically highly significant species in addition to environmental taxa. The genus has previously been characterized by branched chains of ellipsoidal to fusiform conidia. However, this character was shown to have evolved several times indepe...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Badali H,Gueidan C,Najafzadeh MJ,Bonifaz A,van den Ende AH,de Hoog GS

    更新日期:2008-01-01 00:00:00

  • Mycosphaerellaceae - Chaos or clarity?

    abstract::The Mycosphaerellaceae represent thousands of fungal species that are associated with diseases on a wide range of plant hosts. Understanding and stabilising the taxonomy of genera and species of Mycosphaerellaceae is therefore of the utmost importance given their impact on agriculture, horticulture and forestry. Based...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Videira SIR,Groenewald JZ,Nakashima C,Braun U,Barreto RW,de Wit PJGM,Crous PW

    更新日期:2017-06-01 00:00:00

  • The Colletotrichum dracaenophilum, C. magnum and C. orchidearum species complexes.

    abstract::Although Glomerella glycines, Colletotrichum magnum and C. orchidearum are known as causal agents of anthracnose of soybean, Cucurbitaceae and Orchidaceae, respectively, their taxonomy remains unresolved. In preliminary analyses based on ITS, strains of these species appear basal in Colletotrichum phylogenies, cluster...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Damm U,Sato T,Alizadeh A,Groenewald JZ,Crous PW

    更新日期:2019-03-01 00:00:00

  • Microthia, Holocryphia and Ursicollum, three new genera on Eucalyptus and Coccoloba for fungi previously known as Cryphonectria.

    abstract::Cryphonectria havanensis is a fungus associated with Eucalyptus species in Cuba and Florida (U.S.A.). Until recently, there have been no living cultures of C. havanensis and it has thus not been possible to assess its taxonomic status. Isolates thought to represent this fungus have, however, emerged from surveys of Eu...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Gryzenhout M,Myburg H,Hodges CS,Wingfield BD,Wingfield MJ

    更新日期:2006-01-01 00:00:00

  • Families of Diaporthales based on morphological and phylogenetic evidence.

    abstract::Diaporthales is an important ascomycetous order comprising phytopathogenic, saprobic, and endophytic fungi, but interfamilial taxonomic relationships are still ambiguous. Despite its cosmopolitan distribution and high diversity with distinctive morphologies, this order has received relativelyiaceae, Macrohilaceae, Mel...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Senanayake IC,Crous PW,Groenewald JZ,Maharachchikumbura SSN,Jeewon R,Phillips AJL,Bhat JD,Perera RH,Li QR,Li WJ,Tangthirasunun N,Norphanphoun C,Karunarathna SC,Camporesi E,Manawasighe IS,Al-Sadi AM,Hyde KD

    更新日期:2017-03-01 00:00:00

  • Revisiting Metarhizium and the description of new species from Thailand.

    abstract::Over the last two decades the molecular phylogeny and classification of Metarhizium has been widely studied. Despite these efforts to understand this enigmatic genus, the basal lineages in Metarhizium are still poorly resolved. In this study, a phylogenetic framework is reconstructed for the Clavicipitaceae focusing o...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Mongkolsamrit S,Khonsanit A,Thanakitpipattana D,Tasanathai K,Noisripoom W,Lamlertthon S,Himaman W,Houbraken J,Samson RA,Luangsa-Ard J

    更新日期:2020-05-05 00:00:00

  • The Botryosphaeriaceae: genera and species known from culture.

    abstract:UNLABELLED:In this paper we give an account of the genera and species in the Botryosphaeriaceae. We consider morphological characters alone as inadequate to define genera or identify species, given the confusion it has repeatedly introduced in the past, their variation during development, and inevitable overlap as repr...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Phillips AJ,Alves A,Abdollahzadeh J,Slippers B,Wingfield MJ,Groenewald JZ,Crous PW

    更新日期:2013-09-30 00:00:00

  • Cephalotrichum and related synnematous fungi with notes on species from the built environment.

    abstract::A recent taxonomic revision of Microascaceae with an emphasis on synnematous fungi enabled re-identification of previously isolated indoor strains of Cephalotrichum. All available Cephalotrichum strains from the culture collection of the Westerdijk Institute were studied, 20 originating from the built environment. Phy...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Woudenberg JHC,Sandoval-Denis M,Houbraken J,Seifert KA,Samson RA

    更新日期:2017-09-01 00:00:00

  • The Trichoderma koningii aggregate species.

    abstract::The morphological concept of Trichoderma koningii is found to include several species that differ from each other in details of phenotype (including conidium morphology, growth rate) and biogeography. Phylogenetic analysis utilizing partial sequences of the translation-elongation factor 1 alpha (tef1), as well as frag...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Samuels GJ,Dodd SL,Lu BS,Petrini O,Schroers HJ,Druzhinina IS

    更新日期:2006-01-01 00:00:00

  • Opportunistic, human-pathogenic species in the Herpotrichiellaceae are phenotypically similar to saprobic or phytopathogenic species in the Venturiaceae.

    abstract::Although morphologically similar, species of Cladophialophora (Herpotrichiellaceae) were shown to be phylogenetically distinct from Pseudocladosporium (Venturiaceae), which was revealed to be synonymous with the older genus, Fusicladium. Other than being associated with human disorders, species of Cladophialophora wer...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Crous PW,Schubert K,Braun U,de Hoog GS,Hocking AD,Shin HD,Groenewald JZ

    更新日期:2007-01-01 00:00:00

  • European species of Hypocrea Part I. The green-spored species.

    abstract::At present 75 species of Hypocrea have been identified in temperate Europe. Nineteen green-spored species and their Trichoderma asexual states are here described in detail. Extensive searches for Hypocrea teleomorphs in 14 European countries, with emphasis on Central Europe, yielded more than 620 specimens within five...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Jaklitsch WM

    更新日期:2009-01-01 00:00:00

  • A preliminary account of the Cucurbitariaceae.

    abstract::Fresh collections, type studies and molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, rpb2, tef1 and tub2 sequences were used to evaluate the boundaries of Cucurbitaria in a strict sense and of several related genera of the Cucurbitariaceae. Two species are recognised in Cucurbitaria...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Jaklitsch WM,Checa J,Blanco MN,Olariaga I,Tello S,Voglmayr H

    更新日期:2018-06-01 00:00:00

  • Genomic and exoproteomic diversity in plant biomass degradation approaches among Aspergilli.

    abstract::We classified the genes encoding carbohydrate-active enzymes (CAZymes) in 17 sequenced genomes representing 16 evolutionarily diverse Aspergillus species. We performed a phylogenetic analysis of the encoding enzymes, along with experimentally characterized CAZymes, to assign molecular function to the Aspergilli CAZyme...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Mäkelä MR,DiFalco M,McDonnell E,Nguyen TTM,Wiebenga A,Hildén K,Peng M,Grigoriev IV,Tsang A,de Vries RP

    更新日期:2018-09-01 00:00:00

  • Multi-gene phylogeny for Ophiostoma spp. reveals two new species from Protea infructescences.

    abstract::Ophiostoma represents a genus of fungi that are mostly arthropod-dispersed and have a wide global distribution. The best known of these fungi are carried by scolytine bark beetles that infest trees, but an interesting guild of Ophiostoma spp. occurs in the infructescences of Protea spp. native to South Africa. Phyloge...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Roets F,de Beer ZW,Dreyer LL,Zipfel R,Crous PW,Wingfield MJ

    更新日期:2006-01-01 00:00:00

  • Molecular taxonomy of bambusicolous fungi: Tetraplosphaeriaceae, a new pleosporalean family with Tetraploa-like anamorphs.

    abstract::A new pleosporalean family Tetraplosphaeriaceae is established to accommodate five new genera; 1) Tetraplosphaeria with small ascomata and anamorphs belonging to Tetraploa s. str., 2) Triplosphaeria characterised by hemispherical ascomata with rim-like side walls and anamorphs similar to Tetraploa but with three conid...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Tanaka K,Hirayama K,Yonezawa H,Hatakeyama S,Harada Y,Sano T,Shirouzu T,Hosoya T

    更新日期:2009-01-01 00:00:00

  • Deconstructing the evolutionary complexity between rust fungi (Pucciniales) and their plant hosts.

    abstract::The rust fungi (Pucciniales) are the most speciose natural group of plant pathogens, members of which possess the most complex lifecycles in Fungi. How natural selection works on the Pucciniales has been the subject of several hypotheses in mycology. This study uses molecular age estimation using sequence data from mu...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: Aime MC,Bell CD,Wilson AW

    更新日期:2018-03-01 00:00:00

  • The effect of natamycin on the transcriptome of conidia of Aspergillus niger.

    abstract::The impact of natamycin on Aspergillus niger was analysed during the first 8 h of germination of conidia. Polarisation, germ tube formation, and mitosis were inhibited in the presence of 3 and 10 μM of the anti-fungal compound, while at 10 μM also isotropic growth was affected. Natamycin did not have an effect on the ...

    journal_title:Studies in mycology

    pub_type: 杂志文章


    authors: van Leeuwen MR,Krijgsheld P,Wyatt TT,Golovina EA,Menke H,Dekker A,Stark J,Stam H,Bleichrodt R,Wösten HA,Dijksterhuis J

    更新日期:2013-03-15 00:00:00