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What are the common anthracnose pathogens of tropical fruits?

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Fungal Diversity 2013年第4期61卷 165-179页

作者： dhanushka udayanga Dimuthu S.Manamgoda Xingzhong Liu Ekachai Chukeatirote Kevin D.Hyde State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesNo 31st West Beichen RoadChaoyang DistrictBeijing 100101People’s Republic of China Institute of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand

t Species of Colletotrichum are associated with anthracnose of a wide range of host plants including cultivated and wild tropical *** genetic and ecological diversity of species associated with wild fruits are poorly explored,as compared to those associated with pre and postharvest diseases of cultivated *** the present study,isolates of Colletotrichum were obtained from commercially available cultivated fruits,wild fruits(from native trees in natural habitats)and a few herbaceous hosts collected in northern *** isolates were initially characterized based on analysis of complete sequences of nuclear ribosomal internal transcribed spacer(ITS),into the genetically defined species complexes of Colletotrichum gloeosporioides,***,*** and *** isolates were primarily identified in the *** species complex,based on a strongly supported clade within the ITS gene tree and were further characterized using multi-gene phylogenetic analyses and *** analyses of ITS,partial sequences of actin(ACT),calmodulin(CAL),glyceraldehyde-3-phosphate dehydrogenase(GAPDH),glutamine synthetase(GS)andβtubulin(TUB2)genetic markers were performed individually and in *** gloeosporioides sensu stricto was identified from lime(Citrus aurantifolia)and rose apple(Syzygium samarangense).Colletotrichum fructicola was isolated from dragon fruit(Hylocerous undatus)and jujube(Ziziphus sp.).Colletotrichum endophytica was found only from an unknown wild *** observed a considerable genetic and host diversity of species occurring on tropical fruits within the clade previously known as Colletotrichum siamense sensu *** clade consists of isolates identified as pre and postharvest pathogens on a wide range of fruits,including coffee(Coffea arabica),custard apple(Annona reticulata),Cerbera sp.,figs(Ficus racemosa)mango(Mangifera indica),neem(Azadirachta indica)and papaya(Carica papaya)and was the dom

关键词： Colletotrichum gloeosporioides Multi-gene phylogeny Postharvest diseases Quarantine Systematics Species complex Tropical Asia Wild fruits

Insights into the genus Diaporthe:phylogenetic species delimitation in the *** species complex

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Fungal Diversity 2014年第4期67卷 203-229页

作者： dhanushka udayanga Lisa A.Castlebury Amy Y.Rossman Ekachai Chukeatirote Kevin D.Hyde Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201People’s Republic of China WorldAgroforestry Centre East and Central AsiaKunming 650201China Institute of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Systematic Mycology and Microbiology Laboratory United States Department of Agriculture-Agricultural Research ServiceBeltsvilleMD 20705USA

The genus Diaporthe comprises pathogenic,endophytic and saprobic species with both temperate and tropical *** diversification,phenotypic plasticity and extensive host associations have long complicated accurate identifications of species in this *** delimitation of the generic type species Diaporthe eres has been uncertain due to the lack of ex-type *** limits of *** and closely related species were evaluated using molecular phylogenetic analysis of eight genes including nuclear ribosomal internal transcribed spacer(ITS),partial sequences of actin(ACT),DNA-lyase(Apn2),translation elongation factor 1-α(EF1-α),beta-tubulin(TUB),calmodulin(CAL),60s ribosomal protein L37(FG1093)and histone-3(HIS).The occurrence of sequence heterogeneity of ITS within *** is observed,which complicates the analysis and may lead to overestimation of the species *** strict criteria of Genealogical Concordance Phylogenetic Species Recognition(GCPSR)were applied to resolve species boundaries based on individual and combined analyses of other seven genes except the *** accept nine distinct phylogenetic species including Diaporthe alleghaniensis,***,***,***,***,***,***,*** and *** are designated for ***,***,***,***,*** and *** descriptions and illustrations are provided for these *** designed primers are introduced to amplify and sequence the Apn2(DNA-lyase)gene in *** on phylogenetic informativeness profiles,EF1-α,Apn2 and HIS genes are recognised as the best markers for defining species in the *** complex.

关键词： Diaporthaceae DNA-lyase Epitypification Gene discordance Generic type Molecular phylogeny New primers Phylogenetic informativeness Speciation

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

Epitypification and neotypification:guidelines with appropriate and inappropriate examples

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Fungal Diversity 2014年第6期69卷 57-91页

作者： Hiran A.Ariyawansa David L.Hawksworth Kevin D.Hyde E.B.Gareth Jones Sajeewa S.N.Maharachchikumbura Dimuthu S.Manamgoda Kasun M.Thambugala dhanushka udayanga Erio Camporesi Anupama Daranagama Ruvishika Jayawardena Jian-Kui Liu Eric H.C.McKenzie Rungtiwa Phookamsak Indunil C.Senanayake Roger G.Shivas Qing Tian Jian-Chu Xu Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming 650201YunnanChina World Agroforestry Centre East and Central AsiaKunming 650201YunnanChina Institute of Excellence in Fungal Research School of ScienceMae Fah Luang UniversityChiang Rai 57100Thailand Departamento de Biología Vegetal II Facultad de FarmaciaUniversidad Complutense de MadridPlaza Ramón y CajalMadrid 28040Spain Department of Life Sciences The Natural History MuseumCromwell RoadLondon SW75BDUK Mycology Section Royal Botanic GardensKewRichmond Surrey TW93DSUK Department of Botany and Microbiology King Saudi UniversityRiyadhSaudi Arabia A.M.B.Gruppo Micologico Forlivese“Antonio Cicognani” Via Roma18ForlìItaly Manaaki Whenua Landcare Research Private Bag 92170 AucklandNew Zealand Plant Pathology Herbarium Agri-Science Queensland40 Boggo RoadDutton ParkQld 4102Australia

review of phylogenetic studies carried out together with morphological ones shows that a major problem with most early studies is that they concentrated on techniques and used material or strains of fungi that in most cases were not carefully reference,and in a worrying number of cases wrongly *** classical species,particularly of microfungi,are not represented by adequate type material,or other authoritatively identified cultures or specimens,that can serve as DNA sources for phylogenetic study,or for developing robust identification *** classifications of fungi therefore suffer fromthe lack of reference strains in resultant phylogenetic *** some cases,epitypification and neotypification can solve this problem and these tools are increasingly used to resolve taxonomic confusion and stabilize the understanding of species,genera,families,or orders of *** manuscript discusses epitypification and neotypification,describes how to epitypify or neotypify species and examines the importance of this process.A set of guidelines for epitypification is *** where taxa have been epitypified are presented and the benefits and problems of epitypification are *** examples of epitypification,or to provide reference specimens,a new epitype is designated for Paraphaeosphaeria michotii and reference specimens are provided for Astrosphaeriella stellata,***,Phaeosphaeria elongata,Ophiobolus cirsii,and *** this way we demonstrate how to epitypify taxa and its importance,and also illustrate the value of proposing reference specimens if epitypification is not *** we provided guidelines for epitypification,the decision to epitypify or not lies with the author,who should have experience of the fungus *** responsibility is to be taken seriously,as once a later typification is made,it may not be possible to undo that,particularly in the case of epitypes,without using the lengthy and tedious f

关键词： Epitype Generic types Molecular data Nomenclature Systematics Taxonomy Typification

What is a species in fungal plant pathogens?

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Fungal Diversity 2021年第4期109卷 239-266页

作者： Ruvishika S.Jayawardena Kevin D.Hyde Antonio Roberto Gomes de Farias Chitrabhanu S.Bhunjun Himashi S.Ferdinandez Dimuthu S.Manamgoda dhanushka udayanga Indunil S.Herath Kasun M.Thambugala Ishara S.Manawasinghe Achala J.Gajanayake Binu C.Samarakoon Digvijayini Bundhun Deecksha Gomdola Naruemon Huanraluek Ya-ru Sun Xia Tang Itthayakorn Promputtha Marco Thines Innovative Institute of Plant Health Zhongkai University of Agriculture and EngineeringHaizhu DistrictGuangzhou 510225People’s Republic of China Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand Departamento de Genética Universidade Federal de PernambucoAv.Prof.Moraes Rego1235Cidade UniversitáriaRecifePE 50670-901Brazil Department of Botany Faculty of Applied SciencesUniversity of Sri JayewardenepuraNugegodaSri Lanka Department of Biosystems Technology Faculty of TechnologyUniversity of Sri JayewardenepuraPitipanaHomagama 10200Sri Lanka Genetics and Molecular Biology Unit Faculty of Applied SciencesUniversity of Sri JayewardenepuraGangodawilaNugegodaSri Lanka School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Department of Biological Sciences Institute of EcologyEvolution and DiversityGoethe UniversityMax-von-Laue-Str.1360486 Frankfurt am MainGermany Senckenberg Biodiversity and Climate Research Centre Senckenberganlage 2560325 Frankfurt am MainGermany

Scientific names are crucial for communicating knowledge concerning fungi and fungus-like *** plant pathology,they link information regarding biology,host range,distribution and potential risk to agriculture and food *** the past,delimitation among pathogenic taxa was primarily based on morphological *** to distinct species sharing overlapping characteristics,the morphological identification of species is often neither straightforward nor ***,the phylogenetic species concept based on molecular phylogenetic reconstructions gained *** present opinion discusses what a fungal species is and how identification of species in plant pathology has changed over the past *** this context,host-specialization and species complexes are ***,species concepts in plant pathology are examined using case studies from Bipolaris,Colletotrichum,Curvularia,Diaporthe,Diplodia,Meliola,Plasmopara,rust fungi and *** entry contains a brief introduction to the genus,concepts used in species identification so far and the problems in describing a species followed by *** importance of correctly naming and identifying a species is addressed in the context of recent introductions,and we also discuss whether the introduction of new species in pathogenic genera has been *** also provide guidelines to be considered when introducing a new species in a plant pathogenic genus.

关键词： Dual nomenclature Host-specificity Polyphasic approach Pathology Phylogeny Species delimitation Systematics

Improving ITS sequence data for identification of plant pathogenic fungi

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Fungal Diversity 2014年第4期67卷 11-19页

作者： R.Henrik Nilsson Kevin D.Hyde Julia Pawlowska Martin Ryberg Leho Tedersoo Anders Bjornsgard Aas Siti A.Alias Artur Alves Cajsa Lisa Anderson Alexandre Antonelli A.Elizabeth Arnold Barbara Bahnmann Mohammad Bahram Johan Bengtsson-Palme Anna Berlin Sara Branco Putarak Chomnunti Asha Dissanayake Rein Drenkhan Hanna Friberg Tobias Guldberg Froslev Bettina Halwachs Martin Hartmann Beatrice Henricot Ruvishika Jayawardena Ari Jumpponen Havard Kauserud Sonja Koskela Tomasz Kulik Kare Liimatainen Bjorn D.Lindahl Daniel Lindner Jian-Kui Liu Sajeewa Maharachchikumbura Dimuthu Manamgoda Svante Martinsson Maria Alice Neves Tuula Niskanen Stephan Nylinder Olinto Liparini Pereira Danilo Batista Pinho Teresita M.Porter Valentin Queloz Taavi Riit Marisol Sánchez-García Filipe de Sousa Emil Stefańczyk Mariusz Tadych Susumu Takamatsu Qing Tian dhanushka udayanga Martin Unterseher Zheng Wang Saowanee Wikee Jiye Yan Ellen Larsson Karl-Henrik Larsson Urmas Koljalg Kessy Abarenkov Department of Biological and Environmental Sciences University of GothenburgBox 46140530 GothenburgSweden Institute of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Department of Plant Systematics and Geography Faculty of BiologyUniversity of WarsawAl.Ujazdowskie 400-478 WarsawPoland Department of Organismal Biology Uppsala UniversityNorbyvagen 18D75236 UppsalaSweden Institute of Ecology and Earth Sciences University of TartuLai 40Tartu 51005Estonia Microbial Evolution Research Group University of OsloBlindernveien 310371 OsloNorway Institute of Biological Sciences University of Malaya50603 Kuala LumpurMalaysia Department of Biology CESAMUniversity of Aveiro3810-193 AveiroPortugal School of Plant Sciences The University of Arizona1140 E South Campus DriveForbes 303TucsonAZ 85721USA Laboratory of Environmental Microbiology Institute of Microbiology ASCRVídeňská108314220 Prague 4Czech Republic Department of Infectious Diseases Institute of BiomedicineSahlgrenska AcademyUniversity of GothenburgGuldhedsgatan 1041346 GoteborgSweden Department of Forest Mycology and Plant Pathology Swedish University of Agricultural SciencesBox 702675007 UppsalaSweden University of California at Berkeley 321 Koshland Hall University of CaliforniaBerkeleyCA 94720-3102USA Agriculture and Forestry Sciences Beijing 100097China Institute of Forestry and Rural Engineering Estonian University of Life SciencesKreutzwaldi551014 TartuEstonia Natural History Museum of Denmark Øster Voldgade 5-71350 København KDenmark Institute for Genomics and Bioinformatics Graz University of Technology8010 GrazAustria Core Facility Bioinformatics Austrian Centre of Industrial Biotechnology8010 GrazAustria Forest Soils and Biogeochemistry Swiss Federal Research Institute WSLZuercherstrasse 1118903 BirmensdorfSwitzerland Molecular Ecology Institute for Sustainability SciencesAgroscopeReckenholzstrasse 191

Plant pathogenic fungi are a large and diverse assemblage of eukaryotes with substantial impacts on natural ecosystems and human *** taxa often have complex and poorly understood life cycles,lack observable,discriminatory morphological characters,and may not be amenable to in vitro *** a result,species identification is frequently ***(DNA sequence)data have emerged as crucial information for the taxonomic identification of plant pathogenic fungi,with the nuclear ribosomal internal transcribed spacer(ITS)region being the most popular ***,international nucleotide sequence databases are accumulating numerous sequences of compromised or low-resolution taxonomic annotations and substandard technical quality,making their use in the molecular identification of plant pathogenic fungi *** we report on a concerted effort to identify high-quality reference sequences for various plant pathogenic fungi and to re-annotate incorrectly or insufficiently annotated public ITS sequences from these fungal lineages.A third objective was to enrich the sequences with geographical and ecological *** results-a total of 31,954 changes-are incorporated in and made available through the UNITE database for molecular identification of fungi(http://***),including standalone FASTA files of sequence data for local BLAST searches,use in the next-generation sequencing analysis platforms QIIME and mothur,and related *** present initiative is just a beginning to cover the wide spectrum of plant pathogenic fungi,and we invite all researchers with pertinent expertise to join the annotation effort.

关键词： Phytopathogenic fungi Molecular identification ITS Taxonomy Annotation

Hydrogen peroxide mediates pro-inflammatory cell-to-cell signaling: a new therapeutic target for inflammation?

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Neural Regeneration Research 2019年第8期14卷 1430-1437页

作者： dhanushka Gunawardena Ritesh Raju Gerald Münch Department of Pharmacology School of Medicine Western Sydney University

Nitric oxide is now universally recognized as an extracellular signaling molecule. Nitric oxide, produced in one cell, diffuses across the extracellular space and acts with targets in an adjoining cell. In this study, we present proof that hydrogen peroxide - like nitric oxide - acts as a true first (intercellular) messenger for a multitude of pro-inflammatory ligands. RAW 264.7 macrophages were activated with three different ligands, lipopolysaccharide, interferon-gamma or advanced glycation end products in the presence of increasing concentrations of (hydrogen peroxide scavenging) catalase. As inflammatory readouts, nitric oxide and tumor necrosis factor were determined. We hypothesize that hydrogen peroxide travels between cells propagating the signal, then a certain percentage of the readout should be inhibited by catalase in a concentration- dependent manner. The experiment showed concentration-dependent inhib让ion of nitric oxide and tumor necrosis factor-a production in response to all three ligands/ligand combinations (interferon-gamma, lipopolysaccharide, and chicken egg albumin-derived advanced glycation end product) in the presence of increasing concentration of catalase. For example, catalase inhibited 100% of nitric oxide and 40% of tumor necrosis factor-a production at its highest concentration. Our results suggest that hydrogen peroxide travels through cell membranes into the extracellular space and enters and activates ad;acent cells. Like rdtric oxide, we suggest that it is a ubiquitous first messenger, able to transmit cell-to-cell pro-inflammatory signals such as nitric oxide and tumor necrosis factor-a. In a therapeutic setting, our data suggest that compounds acting as hydrogen peroxide scavengers might not even need to enter the cell to act as anti-inflammatory drugs.

关键词： Inflammation glycation redox signaling cytokines anti-inflammatory drugs hydrogen peroxide membrane permeable lipopolysaccharide Interferon-gamma signaling

Uncovering the hidden taxonomic diversity of fungi in Oman

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Fungal Diversity 2021年第1期106卷 229-268页

作者： Sajeewa S.N.Maharachchikumbura dhanushka N.Wanasinghe Ratchadawan Cheewangkoon Abdullah M.Al-Sadi School of Life Science and Technology University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming 650201YunnanPeople’s Republic of China Entomology and Plant Pathology Department Faculty of AgricultureChiang Mai UniversityChiang MaiThailand Department of Crop Sciences College of Agricultural and Marine SciencesSultan Qaboos UniversityAl-Khod 123Oman

Hot desert regions are undoubtedly challenging to fungal survival on the Arabian *** are,however,recognized as the most stress-resistant organisms among all eukaryotes,which could be a result of the rapid evolution of distinct *** current understanding of these microorganisms is derived from studies examining only a fraction of the overall fungal ***,further studies are needed to understand the diversity of fungi in desert *** paper highlights the taxonomy of several unusual fungal genera collected in a range of aquatic and terrestrial environments in *** taxa were identified based on phylogenetic analyses of nuclear ribosomal DNA(rDNA)(LSU,SSU and ITS)and protein-coding genes(TEF,RPB2 and TUB),plus morphological *** analyses,including the presently recognized genera in Patellariales resulted in splitting the order into four clades in *** new family Holmiellaceae and new order Holmiellales are introduced to include *** of Homortomycetaceae form a well-supported and distinct clade and raise it to Homortomycetales ordo ***(Halojulellaceae),Desertiserpentica(Lophiostomata-ceae)and Montanitestudina(Testudinaceae)are described as novel genera in Dothideomycetes.A synnematous hyphomycete with basidiomycetous affinity(Corticiales)was also identified and described as ***,an asexual morph was observed for Holmiella junipericola;Patellaria quercus is synonymized under ***,and seven new species are described.

关键词： 14 new taxa Ascomycota Basidiomycota Desert Dothideomycetes Patellariales Saprobes

A New Record of Aspergillus vadensis (Ascomycota) Isolated from Soil in Yunnan Province,China

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Phyton-International Journal of Experimental Botany 2021年第3期90卷 1031-1039页

作者： Sadia Nadir Sehroon Khan dhanushka N.Wanasinghe Saowaluck Tibpromma Shahid Iqbal Jianchu Xu Peter Mortimer CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming650201China Centre for Mountain Futures Kunming Institute of BotanyKunming654400China Department of Chemistry University of Science and TechnologyBannu28100Pakistan

During a survey of soil fungi in Yunnan Province,several isolates of Aspergillus were *** on morphology and molecular analyses of internal transcribed spacer regions and intervening 5.8S nrRNA gene(ITS),β-tubulin and calmodulin(CaM)genes sequences,two isolates were identified as Aspergillus vadensis(section Nigri).A phylogenetic tree,detailed descriptions,illustrations and scanned electron microscopy morphology are provided for the new *** is the first record of *** from China.

关键词： Morphology phylogeny section Nigri soil fungi