
Mae Fah Luang University
UniversityChiang Rai, Thailand
Research output, citation impact, and the most-cited recent papers from Mae Fah Luang University (Thailand). Aggregated across the NobleBlocks index of 300M+ scholarly works.
Top-cited papers from Mae Fah Luang University
Six DNA regions were evaluated as potential DNA barcodes for Fungi, the second largest kingdom of eukaryotic life, by a multinational, multilaboratory consortium. The region of the mitochondrial cytochrome c oxidase subunit 1 used as the animal barcode was excluded as a potential marker, because it is difficult to amplify in fungi, often includes large introns, and can be insufficiently variable. Three subunits from the nuclear ribosomal RNA cistron were compared together with regions of three representative protein-coding genes (largest subunit of RNA polymerase II, second largest subunit of RNA polymerase II, and minichromosome maintenance protein). Although the protein-coding gene regions often had a higher percent of correct identification compared with ribosomal markers, low PCR amplification and sequencing success eliminated them as candidates for a universal fungal barcode. Among the regions of the ribosomal cistron, the internal transcribed spacer (ITS) region has the highest probability of successful identification for the broadest range of fungi, with the most clearly defined barcode gap between inter- and intraspecific variation. The nuclear ribosomal large subunit, a popular phylogenetic marker in certain groups, had superior species resolution in some taxonomic groups, such as the early diverging lineages and the ascomycete yeasts, but was otherwise slightly inferior to the ITS. The nuclear ribosomal small subunit has poor species-level resolution in fungi. ITS will be formally proposed for adoption as the primary fungal barcode marker to the Consortium for the Barcode of Life, with the possibility that supplementary barcodes may be developed for particular narrowly circumscribed taxonomic groups.
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Fungi are an understudied, biotechnologically valuable group of organisms. Due to the immense range of habitats that fungi inhabit, and the consequent need to compete against a diverse array of other fungi, bacteria, and animals, fungi have developed numerous survival mechanisms. The unique attributes of fungi thus herald great promise for their application in biotechnology and industry. Moreover, fungi can be grown with relative ease, making production at scale viable. The search for fungal biodiversity, and the construction of a living fungi collection, both have incredible economic potential in locating organisms with novel industrial uses that will lead to novel products. This manuscript reviews fifty ways in which fungi can potentially be utilized as biotechnology. We provide notes and examples for each potential exploitation and give examples from our own work and the work of other notable researchers. We also provide a flow chart that can be used to convince funding bodies of the importance of fungi for biotechnological research and as potential products. Fungi have provided the world with penicillin, lovastatin, and other globally significant medicines, and they remain an untapped resource with enormous industrial potential.
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Dothideomycetes comprise a highly diverse range of fungi characterized mainly by asci with two wall layers (bitunicate asci) and often with fissitunicate dehiscence. Many species are saprobes, with many asexual states comprising important plant pathogens. They are also endophytes, epiphytes, fungicolous, lichenized, or lichenicolous fungi. They occur in terrestrial, freshwater and marine habitats in almost every part of the world. We accept 105 families in Dothideomycetes with the new families Anteagloniaceae, Bambusicolaceae, Biatriosporaceae, Lichenoconiaceae, Muyocopronaceae, Paranectriellaceae, Roussoellaceae, Salsugineaceae, Seynesiopeltidaceae and Thyridariaceae introduced in this paper. Each family is provided with a description and notes, including asexual and asexual states, and if more than one genus is included, the type genus is also characterized. Each family is provided with at least one figure-plate, usually illustrating the type genus, a list of accepted genera, including asexual genera, and a key to these genera. A phylogenetic tree based on four gene combined analysis add support for 64 of the families and 22 orders, including the novel orders, Dyfrolomycetales, Lichenoconiales, Lichenotheliales, Monoblastiales, Natipusillales, Phaeotrichales and Strigulales. The paper is expected to provide a working document on Dothideomycetes which can be modified as new data comes to light. It is hoped that by illustrating types we provide stimulation and interest so that more work is carried out in this remarkable group of fungi.
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We present a comprehensive phylogeny derived from 5 genes, nucSSU, nucLSU rDNA, TEF1, RPB1 and RPB2, for 356 isolates and 41 families (six newly described in this volume) in Dothideomycetes. All currently accepted orders in the class are represented for the first time in addition to numerous previously unplaced lineages. Subclass Pleosporomycetidae is expanded to include the aquatic order Jahnulales. An ancestral reconstruction of basic nutritional modes supports numerous transitions from saprobic life histories to plant associated and lichenised modes and a transition from terrestrial to aquatic habitats are confirmed. Finally, a genomic comparison of 6 dothideomycete genomes with other fungi finds a high level of unique protein associated with the class, supporting its delineation as a separate taxon.
Traditionally, fungal taxonomy was based on observable phenotypic characters. Recent advances have driven taxonomic conclusions towards DNA-based approaches and these techniques have corresponding pros and cons. Species concepts must therefore rely on incorporated approaches of genotypic, phenotypic and physiological characters and chemotaxonomy. Examination and interpretation of morphological characters however vary from person to person. Standardized procedures are used in the taxonomic study of fungi and general practices of phenotypic approaches are herein outlined. It is not possible to detail all techniques for all fungi and thus, this paper emphasizes on microfungi. Specimen collection is the initial step in any
This is a continuity of a series of taxonomic papers where materials are examined, described and novel combinations are proposed where necessary to improve our traditional species concepts and provide updates on their classification. In addition to extensive morphological descriptions and appropriate asexual and sexual connections, DNA sequence data are also analysed from concatenated datasets (rDNA, TEF-α, RBP2 and β-Tubulin) to infer phylogenetic relationships and substantiate systematic position of taxa within appropriate ranks. Wherever new species or combinations are being proposed, we apply an integrative approach (morphological and molecular data as well as ecological features wherever applicable). Notes on 125 fungal taxa are compiled in this paper, including eight new genera, 101 new species, two new combinations, one neotype, four reference specimens, new host or distribution records for eight species and one alternative morphs. The new genera introduced in this paper are Alloarthopyrenia, Arundellina, Camarosporioides, Neomassaria, Neomassarina, Neotruncatella, Paracapsulospora and Pseudophaeosphaeria. The new species are Alfaria spartii, Alloarthopyrenia italica, Anthostomella ravenna, An. thailandica, Arthrinium paraphaeospermum, Arundellina typhae, Aspergillus koreanus, Asterina cynometrae, Bertiella ellipsoidea, Blastophorum aquaticum, Cainia globosa, Camarosporioides phragmitis, Ceramothyrium menglunense, Chaetosphaeronema achilleae, Chlamydotubeufia helicospora, Ciliochorella phanericola, Clavulinopsis aurantiaca, Colletotrichum insertae, Comoclathris italica, Coronophora myricoides, Cortinarius fulvescentoideus, Co. nymphatus, Co. pseudobulliardioides, Co. tenuifulvescens, Cunninghamella gigacellularis, Cyathus pyristriatus, Cytospora cotini, Dematiopleospora alliariae, De. cirsii, Diaporthe aseana, Di. garethjonesii, Distoseptispora multiseptata, Dis. tectonae, Dis. tectonigena, Dothiora buxi, Emericellopsis persica, Gloniopsis calami, Helicoma guttulatum, Helvella floriforma, H. oblongispora, Hermatomyces subiculosa, Juncaceicola italica, Lactarius dirkii, Lentithecium unicellulare, Le. voraginesporum, Leptosphaeria cirsii, Leptosphaeria irregularis, Leptospora galii, Le. thailandica, Lindgomyces pseudomadisonensis, Lophiotrema bambusae, Lo. fallopiae, Meliola citri-maximae, Minimelanolocus submersus, Montagnula cirsii, Mortierella fluviae, Muriphaeosphaeria ambrosiae, Neodidymelliopsis ranunculi, Neomassaria fabacearum, Neomassarina thailandica, Neomicrosphaeropsis cytisi, Neo. cytisinus, Neo. minima, Neopestalotiopsis cocoës, Neopestalotiopsis musae, Neoroussoella lenispora, Neotorula submersa, Neotruncatella endophytica, Nodulosphaeria italica, Occultibambusa aquatica, Oc. chiangraiensis, Ophiocordyceps hemisphaerica, Op. lacrimoidis, Paracapsulospora metroxyli, Pestalotiopsis sequoiae, Peziza fruticosa, Pleurotrema thailandica, Poaceicola arundinis, Polyporus mangshanensis, Pseudocoleophoma typhicola, Pseudodictyosporium thailandica, Pseudophaeosphaeria rubi, Purpureocillium sodanum, Ramariopsis atlantica, Rhodocybe griseoaurantia, Rh. indica, Rh. luteobrunnea, Russula indoalba, Ru. pseudoamoenicolor, Sporidesmium aquaticivaginatum, Sp. olivaceoconidium, Sp. pyriformatum, Stagonospora forlicesenensis, Stagonosporopsis centaureae, Terriera thailandica, Tremateia arundicola, Tr. guiyangensis, Trichomerium bambusae, Tubeufia hyalospora, Tu. roseohelicospora and Wojnowicia italica. New combinations are given for Hermatomyces mirum and Pallidocercospora thailandica. A neotype is proposed for Cortinarius fulvescens. Reference specimens are given for Aquaphila albicans, Leptospora rubella, Platychora ulmi and Meliola pseudosasae, while new host or distribution records are provided for Diaporthe eres, Di. siamensis, Di. foeniculina, Dothiorella iranica, Do. sarmentorum, Do. vidmadera, Helvella tinta and Vaginatispora fuckelii, with full taxonomic details. An asexual state is also reported for the first time in Neoacanthostigma septoconstrictum. This paper contributes to a more comprehensive update and improved identification of many ascomycetes and basiodiomycetes.
This paper provides an updated classification of the Kingdom Fungi (including fossil fungi) and fungus-like taxa. Five-hundred and twenty-three (535) notes are provided for newly introduced taxa and for changes that have been made since the previous outline. In the discussion, the latest taxonomic changes in Basidiomycota are provided and the classification of Mycosphaerellales are broadly discussed. Genera listed in Mycosphaerellaceae have been confirmed by DNA sequence analyses, while doubtful genera (DNA sequences being unavailable but traditionally accommodated in Mycosphaerellaceae) are listed in the discussion. Problematic genera in Glomeromycota are also discussed based on phylogenetic results.
) constitute the second largest group of organisms based on global richness estimates, with around 3 million predicted species. Compared to plants and animals, fungi have simple body plans with often morphologically and ecologically obscure structures. This poses challenges for accurate and precise identifications. Here we provide a conceptual framework for the identification of fungi, encouraging the approach of integrative (polyphasic) taxonomy for species delimitation, i.e. the combination of genealogy (phylogeny), phenotype (including autecology), and reproductive biology (when feasible). This allows objective evaluation of diagnostic characters, either phenotypic or molecular or both. Verification of identifications is crucial but often neglected. Because of clade-specific evolutionary histories, there is currently no single tool for the identification of fungi, although DNA barcoding using the internal transcribed spacer (ITS) remains a first diagnosis, particularly in metabarcoding studies. Secondary DNA barcodes are increasingly implemented for groups where ITS does not provide sufficient precision. Issues of pairwise sequence similarity-based identifications and OTU clustering are discussed, and multiple sequence alignment-based phylogenetic approaches with subsequent verification are recommended as more accurate alternatives. In metabarcoding approaches, the trade-off between speed and accuracy and precision of molecular identifications must be carefully considered. Intragenomic variation of the ITS and other barcoding markers should be properly documented, as phylotype diversity is not necessarily a proxy of species richness. Important strategies to improve molecular identification of fungi are: (1) broadly document intraspecific and intragenomic variation of barcoding markers; (2) substantially expand sequence repositories, focusing on undersampled clades and missing taxa; (3) improve curation of sequence labels in primary repositories and substantially increase the number of sequences based on verified material; (4) link sequence data to digital information of voucher specimens including imagery. In parallel, technological improvements to genome sequencing offer promising alternatives to DNA barcoding in the future. Despite the prevalence of DNA-based fungal taxonomy, phenotype-based approaches remain an important strategy to catalog the global diversity of fungi and establish initial species hypotheses.
DNA phylogenetic comparisons have shown that morphology-based species recognition often underestimates fungal diversity. Therefore, the need for accurate DNA sequence data, tied to both correct taxonomic names and clearly annotated specimen data, has never been greater. Furthermore, the growing number of molecular ecology and microbiome projects using high-throughput sequencing require fast and effective methods for en masse species assignments. In this article, we focus on selecting and re-annotating a set of marker reference sequences that represent each currently accepted order of Fungi. The particular focus is on sequences from the internal transcribed spacer region in the nuclear ribosomal cistron, derived from type specimens and/or ex-type cultures. Re-annotated and verified sequences were deposited in a curated public database at the National Center for Biotechnology Information (NCBI), namely the RefSeq Targeted Loci (RTL) database, and will be visible during routine sequence similarity searches with NR_prefixed accession numbers. A set of standards and protocols is proposed to improve the data quality of new sequences, and we suggest how type and other reference sequences can be used to improve identification of Fungi. Database URL: http://www.ncbi.nlm.nih.gov/bioproject/PRJNA177353.
Abstract The Basidiomycota constitutes a major phylum of the kingdom Fungi and is second in species numbers to the Ascomycota. The present work provides an overview of all validly published, currently used basidiomycete genera to date in a single document. An outline of all genera of Basidiomycota is provided, which includes 1928 currently used genera names, with 1263 synonyms, which are distributed in 241 families, 68 orders, 18 classes and four subphyla. We provide brief notes for each accepted genus including information on classification, number of accepted species, type species, life mode, habitat, distribution, and sequence information. Furthermore, three phylogenetic analyses with combined LSU, SSU, 5.8s, rpb1, rpb2, and ef1 datasets for the subphyla Agaricomycotina, Pucciniomycotina and Ustilaginomycotina are conducted, respectively. Divergence time estimates are provided to the family level with 632 species from 62 orders, 168 families and 605 genera. Our study indicates that the divergence times of the subphyla in Basidiomycota are 406–430 Mya, classes are 211–383 Mya, and orders are 99–323 Mya, which are largely consistent with previous studies. In this study, all phylogenetically supported families were dated, with the families of Agaricomycotina diverging from 27–178 Mya, Pucciniomycotina from 85–222 Mya, and Ustilaginomycotina from 79–177 Mya. Divergence times as additional criterion in ranking provide additional evidence to resolve taxonomic problems in the Basidiomycota taxonomic system, and also provide a better understanding of their phylogeny and evolution.
This paper is a compilation of notes on 110 fungal taxa, including one new family, 10 new genera, and 76 new species, representing a wide taxonomic and geographic range. The new family, Paradictyoarthriniaceae is introduced based on its distinct lineage in Dothideomycetes and its unique morphology. The family is sister to Biatriosporaceae and Roussoellaceae. The new genera are Allophaeosphaeria (Phaeosphaeriaceae), Amphibambusa (Amphisphaeriaceae), Brunneomycosphaerella (Capnodiales genera incertae cedis), Chaetocapnodium (Capnodiaceae), Flammeascoma (Anteagloniaceae), Multiseptospora (Pleosporales genera incertae cedis), Neogaeumannomyces (Magnaporthaceae), Palmiascoma (Bambusicolaceae), Paralecia (Squamarinaceae) and Sarimanas (Melanommataceae). The newly described species are the Ascomycota Aliquandostipite manochii, Allophaeosphaeria dactylidis, A. muriformia, Alternaria cesenica, Amphibambusa bambusicola, Amphisphaeria sorbi, Annulohypoxylon thailandicum, Atrotorquata spartii, Brunneomycosphaerella laburni, Byssosphaeria musae, Camarosporium aborescentis, C. aureum, C. frutexensis, Chaetocapnodium siamensis, Chaetothyrium agathis, Colletotrichum sedi, Conicomyces pseudotransvaalensis, Cytospora berberidis, C. sibiraeae, Diaporthe thunbergiicola, Diatrype palmicola, Dictyosporium aquaticum, D. meiosporum, D. thailandicum, Didymella cirsii, Dinemasporium nelloi, Flammeascoma bambusae, Kalmusia italica, K. spartii, Keissleriella sparticola, Lauriomyces synnematicus, Leptosphaeria ebuli, Lophiostoma pseudodictyosporium, L. ravennicum, Lophiotrema eburnoides, Montagnula graminicola, Multiseptospora thailandica, Myrothecium macrosporum, Natantispora unipolaris, Neogaeumannomyces bambusicola, Neosetophoma clematidis, N. italica, Oxydothis atypica, Palmiascoma gregariascomum, Paraconiothyrium nelloi, P. thysanolaenae, Paradictyoarthrinium tectonicola, Paralecia pratorum, Paraphaeosphaeria spartii, Pestalotiopsis digitalis, P. dracontomelon, P. italiana, Phaeoisaria pseudoclematidis, Phragmocapnias philippinensis, Pseudocamarosporium cotinae, Pseudocercospora tamarindi, Pseudotrichia rubriostiolata, P. thailandica, Psiloglonium multiseptatum, Saagaromyces mangrovei, Sarimanas pseudofluviatile, S. shirakamiense, Tothia spartii, Trichomerium siamensis, Wojnowicia dactylidicola, W. dactylidis and W. lonicerae. The Basidiomycota Agaricus flavicentrus, A. hanthanaensis, A. parvibicolor, A. sodalis, Cantharellus luteostipitatus, Lactarius atrobrunneus, L. politus, Phylloporia dependens and Russula cortinarioides are also introduced. Epitypifications or reference specimens are designated for Hapalocystis berkeleyi, Meliola tamarindi, Pallidocercospora acaciigena, Phaeosphaeria musae, Plenodomus agnitus, Psiloglonium colihuae, P. sasicola and Zasmidium musae while notes and/or new sequence data are provided for Annulohypoxylon leptascum, A. nitens, A. stygium, Biscogniauxia marginata, Fasciatispora nypae, Hypoxylon fendleri, H. monticulosum, Leptosphaeria doliolum, Microsphaeropsis olivacea, Neomicrothyrium, Paraleptosphaeria nitschkei, Phoma medicaginis and Saccotheciaceae. A full description of each species is provided with light micrographs (or drawings). Molecular data is provided for 90 taxa and used to generate phylogenetic trees to establish a natural classification for species.
Sooty moulds are a remarkable, but poorly understood group of fungi. They coat fruits and leaves superficially with black mycelia, which reduces photosynthesis rates of host plants. Few researchers have, however, tried to quantify their economic importance. Sooty moulds have been well-studied at the morphological level, but they are poorly represented in a natural classification based on phylogeny. Representatives are presently known in Antennulariellaceae, Capnodiaceae, Chaetothyriaceae, Coccodiniaceae, Euantennariaceae, Metacapnodiaceae and Trichomeriaceae and several miscellaneous genera. However, molecular data is available for only five families. Most sooty mould colonies comprise numerous species and thus it is hard to confirm relationships between genera or sexual and asexual states. Future studies need to obtain single spore isolates of species to test their phylogenetic affinities and linkages between morphs. Next generation sequencing has shown sooty mould colonies to contain many more fungal species than expected, but it is not clear which species are dominant or active in the communities. They are more common in tropical, subtropical and warm temperate regions and thus their prevalence in temperate regions is likely to increase with global warming. Sooty moulds are rarely parasitized by fungicolous taxa and these may have biocontrol potential. They apparently grow in extreme environments and may be xerophilic. This needs testing as xerophilic taxa may be of interest for industrial applications. Sooty moulds grow on sugars and appear to out-compete typical “weed” fungi and bacteria. They may produce antibiotics for this purpose and their biochemical potential for obtaining novel bioactive compounds for medical application is underexplored.
Genera of Phytopathogenic Fungi (GOPHY) is introduced as a new series of publications in order to provide a stable platform for the taxonomy of phytopathogenic fungi. This first paper focuses on 21 genera of phytopathogenic fungi: Bipolaris , Boeremia , Calonectria , Ceratocystis , Cladosporium , Colletotrichum , Coniella , Curvularia , Monilinia , Neofabraea , Neofusicoccum , Pilidium , Pleiochaeta , Plenodomus , Protostegia , Pseudopyricularia , Puccinia , Saccharata , Thyrostroma , Venturia and Wilsonomyces . For each genus, a morphological description and information about its pathology, distribution, hosts and disease symptoms are provided. In addition, this information is linked to primary and secondary DNA barcodes of the presently accepted species, and relevant literature. Moreover, several novelties are introduced, i.e. new genera, species and combinations, and neo-, lecto- and epitypes designated to provide a stable taxonomy. This first paper includes one new genus, 26 new species, ten new combinations, and four typifications of older names.
Sordariomycetes is one of the largest classes of Ascomycota that comprises a highly diverse range of fungi characterized mainly by perithecial ascomata and inoperculate unitunicate asci. The class includes many important plant pathogens, as well as endophytes, saprobes, epiphytes, coprophilous and fungicolous, lichenized or lichenicolous taxa. They occur in terrestrial, freshwater and marine habitats worldwide. This paper reviews the 107 families of the class Sordariomycetes and provides a modified backbone tree based on phylogenetic analysis of four combined loci, with a maximum five representative taxa from each family, where available. This paper brings together for the first time, since Barrs' 1990 Prodromus, descriptions, notes on the history, and plates or illustrations of type or representative taxa of each family, a list of accepted genera, including asexual genera and a key to these taxa of Sordariomycetes. Delineation of taxa is supported where possible by molecular data. The outline is based on literature to the end of 2015 and the Sordariomycetes now comprises six subclasses, 32 orders, 105 families and 1331 genera. The family Obryzaceae and Pleurotremataceae are excluded from the class.
The genus Phomopsis (teleomorph Diaporthe) comprises phytopathologically important microfungi with diverse host associations and a worldwide distribution. Species concepts in Phomopsis have been based historically on morphology, cultural characteristics and host affiliation. This paper serves to provide an overview of the current status of the taxonomy in Phomopsis with special reference to biology, applications of various species, species concepts, future research perspectives and names of common pathogens, the latter being given taxonomic reappraisal. Accurate species identification is critical to understanding disease epidemiology and in developing effective control measures for plant diseases. Difficulties in accurate species identification using morphology have led to the application of alternative approaches to differentiate species, including virulence and pathogenicity, biochemistry, metabolites, physiology, antagonism, molecular phylogenetics and mating experiments. Redefinition of Phomopsis/Diaporthe species has been ongoing, and some species have been redefined based on a combination of molecular, morphological, cultural, phytopathological and mating type data. Rapid progress in molecular identification has in particular revolutionized taxonomic studies, providing persuasive genetic evidence to define the species boundaries. A backbone ITS based phylogenetic tree is here in generated using the sequences derived from 46 type, epitype cultures, and vouchers and is presented as a rough and quick identification guide for species of Phomopsis. The need for epitypification of taxonomic entities and the need to use multiple loci in phylogenies that better reflect species limits are suggested. The account of names of phytopathogens currently in use are listed alphabetically and annotated with a taxonomic entry, teleomorph, associated hosts and disease symptoms, including brief summaries of taxonomic and phylogenetic research. Available type culture information and details of gene sequences derived from type cultures are also summarized and tabulated.
Many fungi are pathogenic on plants and cause significant damage in agriculture and forestry. They are also part of the natural ecosystem and may play a role in regulating plant numbers/density. Morphological identification and analysis of plant pathogenic fungi, while important, is often hampered by the scarcity of discriminatory taxonomic characters and the endophytic or inconspicuous nature of these fungi. Molecular (DNA sequence) data for plant pathogenic fungi have emerged as key information for diagnostic and classification studies, although hampered in part by non-standard laboratory practices and analytical methods. To facilitate current and future research, this study provides phylogenetic synopses for 25 groups of plant pathogenic fungi in the Ascomycota, Basidiomycota, Mucormycotina (Fungi), and Oomycota, using recent molecular data, up-to-date names, and the latest taxonomic insights. Lineage-specific laboratory protocols together with advice on their application, as well as general observations, are also provided. We hope to maintain updated backbone trees of these fungal lineages over time and to publish them jointly as new data emerge. Researchers of plant pathogenic fungi not covered by the present study are invited to join this future effort. Bipolaris, Botryosphaeriaceae, Botryosphaeria, Botrytis, Choanephora, Colletotrichum, Curvularia, Diaporthe, Diplodia, Dothiorella, Fusarium, Gilbertella, Lasiodiplodia, Mucor, Neofusicoccum, Pestalotiopsis, Phyllosticta, Phytophthora, Puccinia, Pyrenophora, Pythium, Rhizopus, Stagonosporopsis, Ustilago and Verticillium are dealt with in this paper.
The Capnodiales incorporates plant and human pathogens, endophytes, saprobes and epiphytes, with a wide range of nutritional modes. Several species are lichenised, or occur as parasites on fungi, or animals. The aim of the present study was to use DNA sequence data of the nuclear ribosomal small and large subunit RNA genes to test the monophyly of the Capnodiales, and resolve families within the order. We designed primers to allow the amplification and sequencing of almost the complete nuclear ribosomal small and large subunit RNA genes. Other than the Capnodiaceae (sooty moulds), and the Davidiellaceae, which contains saprobes and plant pathogens, the order presently incorporates families of major plant pathological importance such as the Mycosphaerellaceae, Teratosphaeriaceae and Schizothyriaceae. The Piedraiaceae was not supported, but resolves in the Teratosphaeriaceae. The Dissoconiaceae is introduced as a new family to accommodate Dissoconium and Ramichloridium. Lichenisation, as well as the ability to be saprobic or plant pathogenic evolved more than once in several families, though the taxa in the upper clades of the tree lead us to conclude that the strictly plant pathogenic, nectrotrophic families evolved from saprobic ancestors (Capnodiaceae), which is the more primitive state.