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Mycologia

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https://www.readbyqxmd.com/read/27760855/phylogenetic-assessment-of-global-suillus-its-sequences-supports-morphologically-defined-species-and-reveals-synonymous-and-undescribed-taxa
#1
Nhu Nguyen, Else C Vellinga, Thomas D Bruns, Peter Kennedy
The genus Suillus represents one of the most recognizable groups of mushrooms in conifer forests throughout the Northern Hemisphere. Although for decades the genus has been relatively well defined morphologically, previous molecular phylogenetic assessments have provided important yet preliminary insights into its evolutionary history. Here we present the first large-scale phylogenetic study of the boundaries of each species in the genus Suillus based on the most current internal transcribed spacer (ITS) barcode sequences available in public databases, as well as sequencing of 224 vouchered specimens and cultures, 15 of which were type specimens from North America...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27760854/sequence-based-classification-and-identification-of-fungi
#2
David Hibbett, Kessy Abarenkov, Urmas Koljalg, Maarja Opik, Benli Chai, James R Cole, Qiong Wang, Pedro W Crous, Vincent A R G Robert, Thorunn Helgason, Josh Herr, Paul Kirk, Shiloh Lueschow, Kerry O'Donnell, Henrik Nilsson, Ryoko Oono, Conrad L Schoch, Christopher Smyth, Donny Walker, Andrea Porras-Alfaro, John W Taylor, David M Geiser
Fungal taxonomy and ecology have been revolutionized by the application of molecular methods and both have increasing connections to genomics and functional biology. However, data streams from traditional specimen- and culture-based systematics are not yet fully integrated with those from metagenomic and metatranscriptomic studies, which limits understanding of the taxonomic diversity and metabolic properties of fungal communities. This article reviews current resources, needs, and opportunities for sequence-based classification and identification (SBCI) in fungi as well as related efforts in prokaryotes...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27760853/the-ph-responsive-transcription-factor-pacc-regulates-mycelial-growth-fruiting-body-development-and-ganoderic-acid-biosynthesis-in-ganoderma-lucidum
#3
Feng-Li Wu, Guang Zhang, Ang Ren, Zhi-Hao Dang, Liang Shi, Ai-Liang Jiang, Ming-Wen Zhao
Ganoderma lucidum is a medicinal macrofungus that is widely used in traditional Chinese medicine. Nonetheless, the scarcity of basic biological studies of this organism has hindered the further development of its commercial value. The pH-responsive transcription factor PacC/Rim101 governs the adaptation to environmental pH, the development and the secondary metabolism of many fungi. In this study, a homologue of PacC/Rim101 that encodes GlPacC was identified in the higher basidiomycete G. lucidum GlPacC is composed of 807 amino acids and contains three typical C2H2 zinc-finger domains, two potential PEST domains, a putative PKA phosphorylation site, and a putative nuclear localization signal (NLS)...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27760852/molecular-and-morphological-characterization-of-three-new-species-of-pythium-from-iran-p-ershadii-p-pyrioosporum-and-p-urmianum
#4
Masoud Abrinbana, Farzaneh Badali, Jafar Abdollahzadeh
Three new species of Pythium: P. ershadii, P. pyrioosporum, and P. urmianum from soils of various regions in Iran are described and illustrated. These species are morphologically distinct from all other known species. Pythium ershadii is morphologically characterized by pyriform ornamented oogonia and rarely production of pyriform oospores. Pythium pyrioosporum differs from other species of the genus by the production of pyriform oospores and smooth walled oogonia, oospores with a tapering elongation toward a hypogynous antheridium and intercalary hypogynous antheridia...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27760851/carbon-utilization-profile-of-the-filamentous-fungal-species-fusarium-fujikuroi-penicillium-decumbens-and-sarocladium-strictum-isolated-from-marine-coastal-environments
#5
Marcelo E Fuentes, Renato A Quinones
Facultative marine filamentous fungi have recently emerged as a functional component in coastal marine systems. However, little is known about their ecological role and functions in biogeochemical cycles. Penicillium decumbens, S. strictum, and F. fujikuroi were isolated from the coastal upwelling zone off south-central Chile. Their carbon profiles were characterized using Biolog FF MicroPlates. These species used a wide range of carbon sources, mainly carbohydrates, but also amino acids, suggesting the use of metabolic routes that include glycolysis/gluconeogenesis...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27760850/multilocus-phylogenetic-and-coalescent-based-methods-reveal-dilemma-in-generic-limits-cryptic-species-and-a-prevalent-intercontinental-disjunct-distribution-in-geopyxis-pyronemataceae-s-l-pezizomycetes
#6
Xianghua Wang, Seppo Huhtinen, Karen Hansen
Species limits in the small genus Geopyxis are debatable because of problems with interpreting the few phenotypic features and poor documentation of types. To clarify species boundaries and diversity, we studied the morphology of 74 specimens of Geopyxis from the Northern Hemisphere, including five types, and sequenced four loci for 57 representatives: the nuc rDNA ITS1-5.8S-ITS2 (ITS), D1-D2 domains of nuc 28S rDNA (28S), translation elongation factor (tef1), and (or) part of the second largest subunit of the RNA polymerase II (rpb2) (5-7 region)...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27760849/its-phylogeny-and-taxonomy-of-phyllachora-species-on-native-myrtacae-from-the-brazilian-cerrado
#7
Maria Desterro Santos, Maria Esther Fonseca-Boiteux, Leonardo Silva Boiteux, Paulo Eduardo Câmara, Jose Carmine Dianese
Nine Phyllachora species found on hosts belonging to the family Myrtaceae native to the Brazilian Cerrado were described and illustrated. We sequenced nuc rDNA internal transcribed spacer barcode regions for representatives of seven species and conducted phylogenetic analyses, which provided strong support for four new species that we describe as Phyllachora cerradensis, P. ermidensis, P. furnasensis, and P. myrciariae Catacauma nigerrimum was recombined into P. nigerrima, and a key to the common Phyllachora species on myrtaceous hosts from the Brazilian Cerrado was also included...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27760848/five-new-species-of-the-obligate-mycoparasite-syncephalisi-zoopagales-zoopagomycotina-from-soil
#8
Gerald L Benny, Hsiao-Man Ho, Katy Lazarus, Matthew E Smith
More than 520 soil samples were surveyed for species of the mycoparasitic zygomycete genus Syncephalis using a culture-based approach. These fungi are relatively common in soil using the optimal conditions for growing both the host and parasite. Five species obtained in dual culture are unknown to science and are described here: (i) S. digitata with sporangiophores short, merosporangia separate at the apices, simple, 3-5 spored; (ii) S. floridana, which forms galls in the host and has sporangiophores up to 170 µm long with unbranched merosporangia that contain 2-4 spores; (iii) S...
October 19, 2016: Mycologia
https://www.readbyqxmd.com/read/27621290/ribosomal-rna-gene-detection-and-targeted-culture-of-novel-nitrogen-responsive-fungal-taxa-from-temperate-pine-forest-soil
#9
Cedar Nelson Hesse, Terry Torres-Cruz, Terri L Billingsley Tobias, Maryam Al-Matruk, Andrea Porras-Alfaro, Cheryl R Kuske
Soil fungal communities are responsible for carbon and nitrogen (N) cycling. The high complexity of the soil fungal community and the high proportion of taxonomically unidentifiable sequences confound ecological interpretations in field studies because physiological information is lacking for many organisms known only by their rRNA sequences. This situation forces experimental comparisons to be made at broader taxonomic racks where functions become difficult to infer. The objective of this study was to determine OTU (operational taxonomic units) level responses of the soil fungal community to N enrichment in a temperate pine forest experiment and to use the sequencing data to guide culture efforts of novel N-responsive fungal taxa...
September 12, 2016: Mycologia
https://www.readbyqxmd.com/read/27621289/fusarium-praegraminearum-sp-nov-a-novel-nivalenol-mycotoxin-producing-pathogen-from-new-zealand-can-induce-head-blight-on-wheat
#10
Tom Gräfenhan, Peter Johnston, Martha M Vauthan, Susan P McCormick, Robert Proctor, Mark Busman, Todd Ward, Kerry O'Donnell
We report on the molecular and morphological characterization of a novel type B trichothecene toxin-producing species (i.e. B clade) recovered from litter in a maize field near Wellington, New Zealand, which is described as Fusarium praegraminearum sp. nov. This species was initially identified as F. acuminatum based on morphological characters. However, it differs from this species by producing longer, slightly asymmetrically curved macroconidia in which the apical cell is not as pointed and by its much faster colony growth rate on agar...
September 12, 2016: Mycologia
https://www.readbyqxmd.com/read/27621288/independent-origins-of-diploidy-in-metarhizium
#11
Ryan Michael Kepler, Yuan Chen, James Kilcrease, Jonathan Shao, Stephen A Rehner
In fungi, stable diploid genome arrangements are rare. Here we present evidence from nuclear intergenic DNA sequencing, microsatellite genotyping, and configuration of the mating-type locus to demonstrate two independent origins of persistent diploid genome organization in the Metarhizium majus species complex. Most taxa in the complex are genotypically haploid, with individual isolates consistently displaying a single allele across all nuclear loci, as well as having a single mating-type locus. In contrast, individuals of M...
September 12, 2016: Mycologia
https://www.readbyqxmd.com/read/27621287/revision-of-the-genus-thyronectria-hypocreales-from-china
#12
Zhao-Qing Zeng, Wen-Ying Zhuang
Recent collections and herbarium specimens of Thyronectria from different regions in China were examined. Using combined analyses of morphology and molecular data, we recognized eight species. Among them, Thyronectria atrobrunnea, T. orientalis, and T. sinensis are described and illustrated as new species. Thyronectria atrobrunnea is characterized by blackish brown perithecia that become cupulate when dry, and 8-spored asci containing ellipsoidal to broadly fusiform or subcylindrical ascospores that bud to form bacillar to subellipsoidal ascoconidia within the asci...
September 12, 2016: Mycologia
https://www.readbyqxmd.com/read/27621286/new-luminescent-mycenoid-fungi-basidiomycota-agaricales-from-s%C3%A3-o-paulo-state-brazil
#13
Dennis E Desjardin, Brian A Perry, Cassius V Stevani
Four species of mycenoid fungi are reported as luminescent (or putatively luminescent) on the basis of specimens collected from São Paulo State, Brazil. Two of them represent new species (Mycena oculisnymphae, Resinomycena petarensis), and two represent new reports of luminescence in previously described species (M. deformis, M. globulispora). Comprehensive descriptions, illustrations, photographs, and comparisons with phenetically similar species are provided. Sequences of nuc rDNA internal transcribed spacer regions were generated for barcoding purposes and for comparisons with similar species...
September 12, 2016: Mycologia
https://www.readbyqxmd.com/read/27738200/a-phylum-level-phylogenetic-classification-of-zygomycete-fungi-based-on-genome-scale-data
#14
Joseph W Spatafora, Ying Chang, Gerald L Benny, Katy Lazarus, Matthew E Smith, Mary L Berbee, Gregory Bonito, Nicolas Corradi, Igor Grigoriev, Andrii Gryganskyi, Timothy Y James, Kerry O'Donnell, Robert W Roberson, Thomas N Taylor, Jessie Uehling, Rytas Vilgalys, Merlin M White, Jason E Stajich
Zygomycete fungi were classified as a single phylum, Zygomycota, based on sexual reproduction by zygospores, frequent asexual reproduction by sporangia, absence of multicellular sporocarps, and production of coenocytic hyphae, all with some exceptions. Molecular phylogenies based on one or a few genes did not support the monophyly of the phylum, however, and the phylum was subsequently abandoned. Here we present phylogenetic analyses of a genome-scale data set for 46 taxa, including 25 zygomycetes and 192 proteins, and we demonstrate that zygomycetes comprise two major clades that form a paraphyletic grade...
September 2016: Mycologia
https://www.readbyqxmd.com/read/27738199/phylogeny-of-fomitopsis-pinicola-a-species-complex
#15
John-Erich Haight, Gary A Laursen, Jessie A Glaeser, D Lee Taylor
Fungal species with a broad distribution may exhibit considerable genetic variation over their geographic ranges. Variation may develop among populations based on geographic isolation, lack of migration, and genetic drift, though this genetic variation may not always be evident when examining phenotypic characters. Fomitopsis pinicola is an abundant saprotrophic fungus found on decaying logs throughout temperate regions of the Northern Hemisphere. Phylogenetic studies have addressed the relationship of F. pinicola to other wood-rotting fungi, but pan-continental variation within F...
September 2016: Mycologia
https://www.readbyqxmd.com/read/27549621/multilocus-phylogenetic-reconstruction-of-the-clavariaceae-agaricales-reveals-polyphyly-of-agaricoid-members
#16
Joshua M Birkebak, Slavomír Adamčík, Brian P Looney, P Brandon Matheny
The genus Camarophyllopsis contains species with lamellate (agaricoid) basidiomes in the family Clavariaceae (Agaricales), a group otherwise dominated by club-like (clavarioid) or branched (coralloid) forms. Previous studies have suggested that species classified in Camarophyllopsis occur in two independent lineages. We reconstructed a multilocus phylogeny of the Clavaria-Camarophyllopsis-Clavicorona clade in the Clavariaceae using RNA polymerase II second largest subunit (rpb2), nuclear ribosomal 28S, and nuclear ribosomal ITS1-5...
September 2016: Mycologia
https://www.readbyqxmd.com/read/27549620/cortinarius-subgenus-callistei-in-north-america-and-europe-type-studies-diversity-and-distribution-of-species
#17
Tuula Niskanen, Kare Liimatainen, Ilkka Kytövuori, Håkan Lindström, Bryn T M Dentinger, Joseph F Ammirati
Five species of Cortinarius subgenus Callistei, are recognized in Europe and North America. Cortinarius callisteus, C. infucatus, and C. neocallisteus sp. nov. have a broad distribution, extending from western North America to Europe. Cortinarius tofaceus is known from eastern North America and Europe, while C. callistei sp. is known only from one locality in Sweden. All five species are primarily associated with coniferous trees. Previously the species were included either in subgenus Leprocybe or subgenus Cortinarius, but recently they have been separated into subgenus Callistei based on molecular data...
September 2016: Mycologia
https://www.readbyqxmd.com/read/27549619/curvularia-malina-sp-nov-incites-a-new-disease-of-warm-season-turfgrasses-in-the-southeastern-united-states
#18
Maria Tomaso-Peterson, Young-Ki Jo, Phillip L Vines, Federico G Hoffmann
A novel species of Curvularia was identified as a foliar pathogen of Cynodon dactylon (bermudagrass) and Zoysia matrella (zoysiagrass), two important warm-season turfgrasses in the southeastern United States. Field symptoms were conspicuous chocolate brown to black spots in turf of both species on golf course putting greens and fairways. Leaves of plants within these spots exhibited prominent, black eyespot lesions from which a darkly pigmented fungus was consistently isolated. The fungus produced gray- to black-olivaceous mycelium within 10 d on potato dextrose agar at 25 C but never produced conidia despite numerous attempts to induce them...
September 2016: Mycologia
https://www.readbyqxmd.com/read/27549618/two-new-lactarius-species-from-a-subtropical-cloud-forest-in-eastern-mexico
#19
Victor M Bandala, Leticia Montoya, Antero Ramos
Two species of Lactarius from the subtropical montane cloud forest of central Veracruz are described as new. Both species are placed in subgenus Lactarius based on an accurate study of macro- and micromorphological features and supported by molecular phylogenetic analyses of a single nuc rDNA ITS1-5.8S-ITS2 (ITS), a concatenated ITS, D1, and D2 domains of nuc 28S rDNA (28S), and part of the second largest subunit of the RNA polymerase II (rpb2) (6-7 region) sequence datasets. In the phylogenetic reconstruction presented, the two species appear nested in two clearly distinct, well supported clades that reveal their phylogenetic position among members of subgenus Lactarius (= subg...
September 2016: Mycologia
https://www.readbyqxmd.com/read/27549616/restingomyces-a-new-sequestrate-genus-from-the-brazilian-atlantic-rainforest-that-is-phylogenetically-related-to-early-diverging-taxa-in-trappeaceae-phallales
#20
Marcelo A Sulzbacher, Tine Grebenc, Tiara S Cabral, Admir J Giachini, Bruno T Goto, Matthew E Smith, Iuri G Baseia
Restingomyces reticulatus gen. et sp. nov. is a recently discovered false truffle species from Atlantic "restinga" rainforest in northeastern Brazil. Molecular and morphological characters separate this new sequestrate species from other described taxa in the order Phallales (Phallomycetidae, Basidiomycota). In our phylogenetic analysis based on nuc 28S rDNA and atp6, R. reticulatus forms a sister clade to Trappea darkeri and Phallobata alba, with the three taxa forming the earliest diverging lineage within Phallales...
September 2016: Mycologia
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