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Prevalence of low inflammatory tinea genitalis in southern China

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Prevalence of low inflammatory tinea genitalis in southern C...

Pathotypes and Genetic Diversity of Chinese Collections of Elsinoě fawcettii Causing Citrus Scab

多彩菌物美丽中国——中国菌物学会2019年学术年会

作者： Yin S Xie X Li M Zhou X Wei L Chen Z Chen J Lu C de Hoog GS Lai W Feng P Department of Dermatology Third Affiliated Hospital Sun Yat-sen University westerdijk fungal biodiversity institute

Background Emergence of highly inflammatory genital dermatophyte infections has been reported from Southeast Asia. In view of this, knowledge of the non-outbreak fungal flora of the genitals is required as a baseline *** We present our 12-year experience in a tertiary clinic with the diagnosis of scrotal fungal *** A retrospective review was performed of patients with a diagnosis of scrotal fungal infections proven by direct microscopy and culture. Clinical, mycological and treatment data were *** In total, 35 male patients were identified, of which 27 concerned dermatophyte infections and eight were yeasts. Nannizzia gypsea was the most common agent（48.6%）, presenting as thick pseudomembraneous lesions limited to the scrotum. Trichophyton rubrum（22.9%） and Epidermophyton floccosum（5.7%） mainly presented erythematous, dry and scaly lesions and involving more sites besides the scrotum. Candida albicans（n=3）, ***（n=2）, C. guilliermondii（n=1） and Trichosporon asteroides（n=1）, presented various lesions. Sports,sweating and concurrent tineas are hypothesized as predisposing *** The prevalent causative agent of scrotum infections is N. gypsea, but wide species diversity is observed. All infections show mild skin inflammation. It is suggested that this genital fungal flora represents the current situation prior to clonal dermatophyte outbreaks.

关键词： Tinea genitalis Nannizzia gypsea Trichophyton rubrum Pseudomembraneous lesion

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Journal of Integrative Agriculture 2014年第6期13卷 1293-1302页

作者： HOU Xin HUANG Feng ZHANG Tian-yuan XU Jian-guo Hyde D Kevin LI Hong-ye institute of Biotechnology Zhejiang University Zhejiang Citrus Research institute institute of Excellence in fungal Research Mae Fah Luang University

Two scab diseases are currently recognized on citrus：citrus scab, caused by Elsino？ fawcettii, and sweet orange scab, caused by E. australis. Although these pathogens are economically important, there is no molecular data on these species in China. Here we use internal transcribed spacer sequence data to report on host-speciifcity and genetic relationships among 46 isolates collected from the main citrus varieties grown across China. All strains isolated were E. fawcettii. Based on pathogenicity testing on 9 different citrus species, isolates were divided into 11 pathotypes （SM, FBHR, SJCR, SPOJCR, SR, SOJG, SPOJC, SRGC, Lemon and two unnamed pathotypes）. SM is a new pathotype, and two isolates did not ift into any of the known pathotypes of E. fawcettii. Inter-simple sequence repeat （ISSR-PCR） assays separated the E. fawcettii isolates into 10 subgroups;the groupings basically corresponded to the pathogenicity test.

关键词： ElsinoYfawcettii genetic diversity ISSR pathotypes

Fungi between extremotolerance and opportunistic pathogenicity on humans

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fungal Diversity 2018年第6期93卷 195-213页

作者： Cene Gostincar Janja Zajc Metka Lenassi Ana Plemenitas Sybren de Hoog Abdullah M.S.Al-Hatmi Nina Gunde-Cimerman Department of Biology Biotechnical FacultyUniversity of LjubljanaJamnikarjeva 1011000 LjubljanaSlovenia Department of Molecular and Biomedical Sciences Jozˇef Stefan InstituteJamova 391000 LjubljanaSlovenia National institute of Biology Vecˇna pot 1111000 LjubljanaSlovenia institute of Biochemistry Faculty of MedicineUniversity of LjubljanaVrazov trg 21000 LjubljanaSlovenia westerdijk fungal biodiversity institute UtrechtThe Netherlands Center of Expertise in Mycology of RadboudUMC/Canisius Wilhelmina Ziekenhuis NijmegenThe Netherlands Directorate General of Health Services IbriOman

Numerous agents of infections in humans and other mammals are found among fungi that are able to survive extreme environmental conditions and to quickly adapt to novel ***,the relationship between opportunistic potential and polyextremotolerance was not yet studied systematically in ***,the link between polyextremotolerance and opportunistic pathogenicity is shown in a kingdom-wide phylogenetic analysis as a statistically significant co-occurrence of extremotolerance(*** and psychrotolerance)and opportunism at the level of fungal *** addition to extremotolerance,fungal opportunists share another characteristic—an apparent lack of specialised virulence *** is illustrated by a comparative genomic analysis of 20 dothideomycetous and eurotiomycetous black *** the genomes of specialised fungal plant pathogens were significantly enriched in known virulence-associated genes that encode secreted proteases,carbohydrate active enzyme families,polyketide synthases,and non-ribosomal peptide synthetases,no such signatures were observed in human *** the presented results have several *** infection of human hosts is a side effect of fungal stress tolerance and adaptability,the human body is most likely neither the preferred habitat of such species,nor important for their evolutionary *** defines opportunism as opposed to pathogenicity,where infection is advantageous for the species’*** opportunists are generally incapable of the host-to-host transmission,any host-specific adaptations are likely to be lost with the resolution of the infection,explaining the observed lack of specialised virulence *** this scenario opportunistic infections should be seen as an evolutionary dead end and unlikely to lead to true pathogenicity.

关键词： Virulence factor Extremotolerance Stress tolerance Mycosis Opportunistic infection Black yeast

Phylogenetic inference and taxonomic revision of Didymellaceae

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Phylogenetic inference and taxonomic revision of Didymellace...

Influences of chronic contamination of oil field exploitation on soil nematode communities at the Yellow River Delta of China

多彩菌物美丽中国——中国菌物学会2019年学术年会

作者： L.W.Hou J.Z.Groenewald P.W.Crous L.Cai Chinese Academy of Sciences Institute of MicrobiologyState Key Laboratory of Mycology University of Chinese Academy of Sciences westerdijk fungal biodiversity institute Utrecht University Department of Biology Microbiology

Didymellaceae（Pleosporales, Dothideomycetes） is one of the most species-rich families in the fungal kingdom. Species of Didymellaceae are geographically widespread and distribute in numerous ecological *** most species have been shown to be important plant pathogens, with six species of quarantine significance, many species also infect human, insects, fungi or inhabit a wide range of other substrates as saprophytes. The taxonomy of Didymellaceae has undergone significant changes in recent years via morphological and phylogenetic analyses based on DNA sequence data of ex-type strains. Several poly-and paraphyletic genera, including Phoma, Didymella, and Ascochyta were redefined, along with the introductions of new genera. However, due to the tradition of host associated nomenclature, the wide host range and the widespread presence of Didymellaceae, taxonomy of the majority of species in this family remain unsolved and the real species diversity is largely unknown. To further resolve the phylogenetic relationships of Didymellaceae,in the present study, a systematic analysis of this family was carried out based on the hitherto largest number of cultures with a global distribution and diverse substrates. Total 1130 Didymellaceae strains from 76 countries, 98 plant families and 55 other substrates, including animals, fungi, soil, air, water, paint, glacier, were examined. The resulting phylogenetic tree of four loci（ITS, LSU, rpb2, tub2） resolved 38 well supported genera and recognized287 species. Among them, 7 new genera, 30 new species from plants, soil, coral, house dust were ***, 20 new combinations were proposed, and five epitypes and four neotypes were designated to stabilize the taxonomy and use of elder names. On this basis, an extended phylogenetic backbone for Didymellaceae based on a more complete sequences dataset was generated, aiming to help the delimitation of novelties at the species,genus and family levels. In addition, rpb2 wa

关键词： Multi-locus phylogeny new taxa Phoma rpb2 taxonomy

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Frontiers in Biology 2009年第3期4卷 376-383页

作者： Yingying WANG Hui CHEN Huili CHEN Jihua WU Key Laboratory for biodiversity Science and Ecological Engineering of the Ministry of Education Institute of Biodiversity ScienceFudan UniversityShanghai 200433China

Oil production related activities have led to many environmental *** 80%of the total output of crude oil is generated from terrestrial oilfields in the ***,the impact of oil exploitation procedures on soil animal communities has not been fully *** study investigated the responses of soil nematode communities to the oil exploitation activities in the Yellow River Delta of *** setting 10 oilfield sites and 5 relatively uncontaminated sites(controls),we found that the content of soil total petroleum hydrocarbons(TPH)was significantly higher at oilfield sites than at *** a longer oil exploitation history,the content of soil TPH *** nematode community structure at oilfield sites was largely different from that at *** nematodes were significantly less abundant but more diverse at oilfield sites than at *** proportions of fungal feeders were significantly lower at oilfield sites than at controls,attaining only half of those at *** nematode trophic diversity and genus number negatively correlated with the duration of petroleum exploitation *** study elucidated the difference in soil nematode communities caused by oilfield exploitation and indicated that the nematode diversity was most obviously influenced by the soil TPH content and the oil exploitation history.

关键词： community composition oil exploitation history oilfield soil nematodes the Yellow River Delta

Morphology and phylogeny of root-endophytic fungus Periconia igniaria

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Studies in Fungi 2019年第1期4卷 274-281页

作者： D’Souza MA Rana S Singh SK Department of Botany St.Xavier’s CollegeMapusaGoa-403507India National fungal Culture Collection of India Biodiversity and Palaeobiology GroupMACS'Agharkar Research InstituteGG Agarkar Road411004 PuneIndia

Periconia igniaria,isolated as an endophytic fungus from roots of Cheilocostus speciosus from Calangute,Bardez,Goa,India was described in this *** identity of the endophytic isolate was based on asexual-morphs,cultural characteristics and phylogenetic analyses of internal transcribed spacer rDNA sequence *** our knowledge,this is the first report of this taxon as root endophyte of Cheilocostus speciosus from Western Ghats forests,Goa,India.

关键词： Cheilocostus speciosus Goa Taxonomy Western Ghats

Phylogeny,ecology and taxonomy of systemic pathogens and their relatives in Ajellomycetaceae(Onygenales):Blastomyces,Emergomyces,Emmonsia,Emmonsiellopsis

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fungal Diversity 2018年第3期90卷 245-291页

作者： Yanping Jiang Karolina Dukik Jose F.Munoz Lynne Sigler Ilan S.Schwartz Nelesh P.Govender Chris Kenyon Peiying Feng Bert Gerrits van den Ende J.Benjamin Stielow Alberto M.Stchigel Hongguang Lu Sybren de Hoog Department of Dermatology The Affiliated HospitalGuizhou Medical UniversityGuiyangChina westerdijk fungal biodiversity institute UtrechtThe Netherlands Center of Expertise in Mycology of RadboudUMC/Canisius Wilhelmina Hospital NijmegenThe Netherlands institute of biodiversity and Ecosystem Dynamics University of AmsterdamAmsterdamThe Netherlands Broad institute of MIT and Harvard CambridgeMAUSA and Biological Sciences EdmontonABCanada Division of Infectious Diseases Department of MedicineFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABCanada Global Health institute Faculty of Medicine and Health SciencesUniversity of AntwerpAntwerpBelgium A Division of the National Health Laboratory ServiceJohannesburgSouth Africa Sexually Transmitted Infection Unit Institute of Tropical MedicineAntwerpBelgium Third Affiliated Hospital Sun Yat-Sen UniversityGuangzhouChina Thermo Fisher Scientific LandsmeerThe Netherlands Mycology Unit and IISPV University Rovira i VirgiliReusTarragonaSpain

The family Ajellomycetaceae(Onygenales)includes mammal-associated pathogens within the genera Blastomyces,Emmonsia,Histoplasma and Paracoccidioides,as well as the recently described genera,Emergomyces that causes disease in immunocompromised hosts,and Emmonsiellopsis,known only from *** further assess the phylogenetic relationships among and between members of these genera and several previously undescribed species,we sequenced and analyzed the DNA-directed RNA polymerase II(rPB2),translation elongation factor 3-a(TEF3),b-tubulin(TUB2),28S large subunit rDNA(LSU)and the internal transcribed spacer regions(ITS)in 68 strains,in addition to morphological and physiological *** better understand the thermal dimorphism among these fungi,the dynamic process of transformation from mycelial to yeast-like or adiaspore-like forms was also assessed over a range of temperatures(6–42C).Molecular data resolved the relationships and recognized five major well-supported lineages that correspond largely to the genus ***,typified by Emmonsia parva,is a synonym of Blastomyces that also accommodates Blastomyces helicus(formerly Emmonsia helica).Emmonsia crescens is phylogenetically distinct,and found closely related to a single strain from soil without known *** silverae,Emergomyces canadensis,Emergomyces europaeus and Emmonsia sola are newly *** all of the taxa are associated with human and animal *** crescens,*** and *** are prevalently associated with pulmonary disease in humans or *** helicus,***,Emergomyces africanus,***,***,*** and ***(formerly Emmonsia pasteuriana)are predominantly found in human hosts with immune disorders;no animal hosts are known for these species except ***.

关键词： Ajellomycetaceae Onygenales Phylogeny Ecology Thermal dimorphism Systemic infection Taxonomy

Epitypification:should we epitypify?

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第10期9卷 842-846页

作者： Kevin D. HYDE Ying ZHANG International fungal Research and Development Centre the Research Institute of Resource Insects Chinese Academy of Forestry Kunming 650224 China fungal Research Group School of Science Mae Fah Luang University Tasud Muang Chiang Rai 5 7100 Thailand Centre for Research in fungal Diversity School of Biological Sciences University of Hong Kong Hong Kong China

Epitypification can solve many taxonomic problems and stabilize the understanding of species, genera, families or orders. The aim of this paper is to illustrate how to epitypify. A few examples where taxa have been epitypified are considered and the benefits and disadvantages of epitypification are discussed. We also outline some examples of taxa which need to be epitypifled with reasons.

关键词： Colletotrichum GenBank Molecular phylogeny Taxonomy Typification

A multi-locus phylogenetic evaluation of Diaporthe (Phomopsis)

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fungal Diversity 2012年第5期56卷 157-171页

作者： Dhanushka Udayanga Xingzhong Liu Pedro W.Crous Eric H.C.McKenzie Ekachai Chukeatirote Kevin D.Hyde institute of Excellence in fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesNo 31st West Beichen RoadChaoyang DistrictBeijing 100101People’s Republic of China CBS-KNAW fungal biodiversity Centre Uppsalalaan 83584 CTUtrechtThe Netherlands Landcare Research Private Bag 92170AucklandNew Zealand

The genus Diaporthe(Phomopsis)includes important plant pathogenic fungi with wide host ranges and geographic *** the present study,phylogenetic species recognition in Diaporthe is re-evaluated using a multi-locus phylogeny based on a combined data matrix of rDNA ITS,and partial sequences from the translation elongation factor 1-α(EF 1-α),βtubulin(TUB)and calmodulin(CAL)molecular *** sequences of available extype cultures have been included,providing a multi-locus backbone tree for future studies on *** utilizable loci were analyzed individually and in combination,and ITS,EF 1-αand multi-locus phylogenetic trees are *** phylogenetic tree inferred by combined analysis of four loci provided the best resolution for species as compared to single gene *** are provided for nine species previously known in Phomopsis that are transferred to Diaporthe in the present *** unraveling of cryptic species complexes of Diaporthe based on Genealogical Concordance Phylogenetic Species Recognition(GCPSR)is emphasized.

关键词： Ex-type culture Host diversity Mating types Molecular systematics New combination Phytopathogen Species recognition Taxonomy