Walter M Jaklitsch

University of Natural Resources and Life Sciences Vienna | boku · Department of Systematic and Evolutionary Botany

Based on phylogenetic analyses of a multi-gene matrix of nuITS-LSU rDNA, RPB2 and TUB2 sequences and morphology, xylariaceous species with uni- to pauciperitheciate stromata and ascospores having a spirally coiling (helicoid) germ slit are revised and reclassified, including detailed descriptions and illustrations. The genus Helicogermslita is rede...

Trichothecenes are terpenoid toxins produced by species in 10 fungal genera, including species of Trichoderma. The trichothecene biosynthetic gene (tri) cluster typically includes the tri5 gene, which encodes a terpene synthase that catalyzes formation of trichodiene, the parent compound of all trichothecenes. The two Trichoderma species, Trichoder...

Recent studies on the fungal families Lophiostomataceae and Lophiotremataceae (Pleosporales) have provided varying phylogenetic and taxonomic results concerning constituent genera and species. By adding DNA sequences of 24 new strains of Lophiostomataceae and nine new strains of Lophiotremataceae to a sequence data matrix from international databas...

Based on molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, RPB1 , RPB2 and TEF1 sequences and by morphological evidence, the genus Mycosphaerangium is shown to be the closest relative of Neomelanconium , and confirmed to be a member of the Cenangiaceae (Leotiomycetes). While Mycosphaerangium and Neomelanconium sha...

The genus Melanconis (Melanconidaceae, Diaporthales) in the strict sense is here re-evaluated regarding phylogenetic structure, taxonomy, distribution and ecology. Using a matrix of sequences from ITS, LSU, ms204 , rpb2 , tef1 and tub2 , eight species are recognised and their phylogenetic positions are determined. Based on phylogenetic, morphologic...

During a workshop in Hordaland with invited international experts, we found 13 ascomycete species new to Norway (Cucurbitaria pulveracea, Dothidotthia ramulicola, Dothivalsaria megalospora, Julella macrospora, Lentomitella investita, Mycoporum sparsellum, Nigrograna mycophila, Ptychographa xylographoides, Rutstroemia tiliacea, Saccardoёlla canadens...

European species of the genus Dendrostoma (Erythrogloeaceae, Diaporthales) occurring on Castanea sativa and Quercus spp. based on freshly collected material are presented. Using a matrix of sequences from ITS, LSU, rpb2 , and tef1 , five species are recognized, and their phylogenetic positions are determined. Four species are added to the 14 descri...

Based on DNA sequence data, the genus Leptosillia is shown to belong to the Xylariales. Molecular phylogenetic analyses of ITS-LSU rDNA sequence data and of a combined matrix of SSU-ITS-LSU rDNA, rpb1, rpb2, tef1 and tub2 reveal that the genera Cresporhaphis and Liberomyces are congeneric with Leptosillia. Coelosphaeria fusariospora, Leptorhaphis a...

Fresh collections and their ascospore and conidial isolates backed up by type studies and molecular phylogenetic analyses of a multigene matrix of partial nuSSU-, complete ITS, partial LSU rDNA, rpb2 , tef1 and tub2 sequences were used to evaluate the boundaries and species composition of Fenestella and related genera of the Cucurbitariaceae . Eigh...

In the course of surveys on dothideomycetous fungal genera associated with various hosts in Taiwan, Neomassaria-like species were collected as saprobes on dead stems of Rhododendron sp. Maximum likelihood and Bayesian phylogenetic analyses based on concatenated LSU, rpb2, SSU and tef1 gene matrices indicate that Neomassaria-like isolates generated...

The new species Stilbocrea walteri is described and illustrated from Quercus ilex collected in Portugal. Phylogenetic analyses of LSU rDNA, rpb1, rpb2 and tef1 sequence matrices place S. walteri in the Bionectriaceae, Hypocreales, within a clade of specimens morphologically identified as Stilbocrea macrostoma, the generic type of Stilbocrea. Stilbo...

Phylogenetic analyses of a combined DNA data matrix containing nuclear small and large subunits (nSSU, nLSU) and mitochondrial small subunit (mtSSU) ribosomal RNA and the largest and second largest subunits of the RNA polymerase II (rpb1, rpb2) of representative Pezizomycotina revealed that the enigmatic genera Xylobotryum and Cirrosporium form an...

Nomenclatural type definitions are one of the most important concepts in biological nomenclature. Being physical objects that can be re-studied by other researchers, types permanently link taxonomy (an artificial agreement to classify biological diversity) with nomenclature (an artificial agreement to name biological diversity). Two proposals to am...

2018): Two unusual new species of Pleosporales: Anteaglonium rubescens and Atro-calyx asturiensis.-Sydowia 70: 129-140. Two new species of Pleosporales, Anteaglonium rubescens (Anteagloniaceae) and Atrocalyx asturiensis (Lophiotremataceae), are described. Phylogenetic placement was determined by combined analyses of a DNA data matrix containing ITS...

Cryptodicus muriformis and Schizoxylon gilenstamii (Stictidaceae, Ostropales, Lecanoromycetes, Ascomycota) are described as new to science from collections made in Europe (Sweden, Austria, Switzerland) and North America (Arizona), based on phylogenetic analyses of three loci. Both species show unique morphological characters that distinguish them f...

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 and 19 in Neocucurbitaria. The...

Phylogenetic analyses of a combined DNA data matrix containing ITS, LSU, rpb2 and tub2 sequences of representative Xylariales revealed that the genus Barrmaelia is a well-defined monophylum, as based on four of its described species (B. macrospora, B. moravica, B. oxyacanthae, B. rhamnicola) and the new species B. rappazii. The generic type of Ento...

Molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, rpb2 and tef1 sequences were performed to investigate the phylogenetic relationships of Corynespora, Exosporium and Helminthosporium species. Based on phylogenetic analyses and morphology, the genus Exosporium is synonymised with Helminthosporium, and the genus Cor...

Molecular phylogenetic analyses of ITS-LSU rDNA sequence data demonstrate that Melanconis species occurring on Juglandaceae are phylogenetically distinct from Melanconis sensu stricto, and the new genus Juglanconis is described. Morphologically, the genus Juglanconis differs from Melanconis by light to dark brown conidia with irregular verrucae on...

Based on phylogenetic analyses of an ITS-LSU-SSU-rpb2-tef1 sequence data matrix three taxa once classified in Cucurbitaria are referred to the Melanommataceae. Cucurbitaria rhododendri, also known as Melanomma rhododendri, is not congeneric with the generic type of Melanomma, M. pulvis-pyrius and thus classified in the new genus Alpinaria. Cucurbit...

We here report the following 20 species of non-lichenized bitunicate ascomycetes as new to Norway: Antealophiotrema brunneosporum, Botryosphaeria corticola, Capronia munkii, Capronia normandinae, Capronia parasitica, Capronia spinifera, Exosporiella fungorum, Helminthosporium oligosporum, Jahnula aquatica, Lophiostoma fuckelii, Lophiostoma rugulosu...

Stigmatodiscus pruni (Stigmatodiscaceae, Stigmatodiscales) is described and illustrated from corticated dead twigs of Prunus spinosa collected in Austria and France. It is characterised by hysteriform ascomata with two lateral black lips, which are erumpent through the periderm of the host and a black disc in combination with two-celled, asymmetric...

A multigene analysis of a combined ITS-LSU-SSU-rpb2-tef1 sequence data matrix was applied to infer the phylogenetic position of the genus Thyridaria in the Pleosporales. The generic type of Thyridaria, T. broussonetiae (syn. T. incrustans), is situated in a clade currently named Roussoellaceae, which becomes a synonym of Thyridariaceae. However, Th...

The genus Allantonectria is synonymised with Thyronectria, based on morphological and molecular phylogenetic considerations. Investigations of types and fresh collections revealed that Tubercularia concentrica is an earlier name for Sphaeria (syn. Allantonectria) miltina and is thus combined in Thyronectria. Allantonectria yuccae is recognised as a...

With the advance to one scientific name for each fungal species, the generic names in the class Sordariomycetes typified by sexual and asexual morphs are evaluated based on their type species to determine if they compete with each other for use or protection. Recommendations are made for which of the competing generic names should be used based on...

Phylogenetic analyses of ITS-LSU rDNA sequence data revealed that Anthostoma taeniosporum, currently classified as Lo­padostoma taeniosporum, does not belong to Xylariales but to the genus Coniochaeta (Coniochaetales), in which it is formally combined. Anthostoma taeniosporum is epitypified with a recent specimen for which sequence data are availab...

A multigene analysis of a combined ITS, LSU, SSU, rpb2 and tef1 sequence data matrix was applied to infer the phylogenetic position of the genus Teichospora in the Pleosporales, based on isolates from freshly collected material of the generic type T. trabicola and several additional species. Phylogenetic analyses revealed that Misturatosphaeria and...

During a survey on corticolous Dothideomycetes, several collections with ascospores matching the genera Asteromassaria and Stigmatomassaria (Pleomassariaceae, Pleosporales) were revealed from dead corticated twigs of Acer, Carpinus and Tamarix. Closer morphological examination showed that their ascomata were apothecial, with a hamathecium consistin...

Important note on Trichoderma phylogenetics

Fresh material, type studies and molecular phylogeny were used to clarify phylogenetic relationships of the nine genera Acrocordiella, Blogiascospora, Clypeosphaeria, Hymenopleella, Lepteutypa, Pseudapiospora, Requienella, Seiridium and Strickeria. At first sight, some of these genera do not seem to have much in common, but all were found to belong...

A list of 254 names of species and two names of varieties in Trichoderma with name or names against which they are to be protected, following the ICN (Melbourne Code, Art. 14.13), is presented for consideration by the General Committee established by the Congress, which then will refer them to the Nomenclature Committee for Fungi (NCF). This list i...

Part 1/2 of Engler’s Syllabus of Plant Families – Ascomycota provides a thorough treatise of the world-wide morphological and molecular diversity of the fungal phylum Ascomycota. The Ascomycota (including lichenized forms) are the most diverse group of fungi, with a fascinating range of morphological and biological variation, distributed from the a...

The Calosphaeriales is revisited with new collection data, living cultures, morphological studies of ascoma centrum, secondary structures of the internal transcribed spacer (ITS) rDNA and phylogeny based on novel DNA sequences of five nuclear ribosomal and protein-coding loci. Morphological features, molecular evidence and information from predicte...

List of fungal names, isolate information and new sequences determined for this study and those retrieved from GenBank. GenBank accession numbers in bold were generated for this study. Strains: T = ex-holotype, Epi = ex-epitype, Is = ex-isotype. (DOCX)

This paper provides recommendations of one name for use among pleomorphic genera in Dothideomycetes by the Working Group on Dothideomycetes established under the auspices of the International Commission on the Taxonomy of Fungi (ICTF). A number of these generic names are proposed for protection because they do not have priority and/or the generic n...

Two new species of Thyronectria growing in Mediterranean vegetation are described from southern Spain; they are T. giennensis from Quercus ilex ssp. rotundifolia and T. pistaciae from Pistacia lentiscus. Both species are characterized by morphology of sexual and asexual morphs and by DNA data. They have olivaceous to green-brown muriform ascospores...

In advancing to one name for fungi, this paper treats generic names competing for use in the order Diaporthales (Ascomycota, Sordariomycetes) and makes a recommendation for the use or protection of one generic name among synonymous names that may be either sexually or asexually typified. A table is presented that summarizes these recommendations. A...

In advancing to one name for fungi, this paper treats generic names competing for use in the order Diaporthales (Ascomycota, Sordariomycetes) and makes a recommendation for the use or protection of one generic name among synonymous names that may be either sexually or asexually typified. A table is presented that summarizes these recommendations. A...

The present paper represents the second contribution in the Genera of Fungi series, linking type species of fungal genera to their morphology and DNA sequence data, and where possible, ecology. This paper focuses on 12 genera of microfungi, 11 of which the type species are neo- or epitypified here: Allantophomopsis (A. cytisporea, Phacidiaceae, Pha...

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