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Mycologia

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https://www.readbyqxmd.com/read/29537942/bulgariella-pulla-a-leotiomycete-of-uncertain-placement-with-an-uncommon-type-of-ascus-opening
#1
Teresa Iturriaga, Katherine F LoBuglio, Donald H Pfister
Bulgariella pulla (Leotiomycetes) is redescribed with the addition of characters of the ascus, spores, and habitat that were previously unconsidered. The ascus dehiscence mechanism in Bulgariella is unusual among Leotiomycetes. In this genus, asci lack a pore and open by splitting to form valves. Phylogenetic analyses of partial sequences of translation elongation factor 1-α (TEF1-α), the second largest subunit of RNA polymerase II (RPB2), and the 18S and 28S nuc rRNA genes determined that Bulgariella belongs within Leotiomycetes but without conclusive assignment to an order or family...
March 9, 2018: Mycologia
https://www.readbyqxmd.com/read/29528277/fistulinella-ruschii-sp-nov-and-a-new-record-of-fistulinella-campinaranae-var-scrobiculata-for-the-atlantic-forest-brazil
#2
Altielys Casale Magnago, Maria Alice Neves, Rosa Mara Borges da Silveira
Fistulinella is a small genus of boletoid fungi in the subfamily Austroboletoideae in the order Boletales. In this paper, F. ruschii from the Atlantic Forest is proposed as new to science and F. campinaranae var. scrobiculata, known from the Brazilian Amazon forest, is recorded for the first time in the Atlantic Forest. Macro- and microscopic descriptions, molecular data (nuc rDNA ITS1-5.8S-ITS2 and nuc 28S rDNA), photographs of the basidiomata, and scanning electron microscopy images of basidiospores are provided for both species...
February 23, 2018: Mycologia
https://www.readbyqxmd.com/read/29528269/fusarium-algeriense-sp-nov-a-novel-toxigenic-crown-rot-pathogen-of-durum-wheat-from-algeria-is-nested-in-the-fusarium-burgessii-species-complex
#3
Imane Laraba, Abdelaziz Keddad, Houda Boureghda, Nora Abdallah, Martha M Vaughan, Robert H Proctor, Mark Busman, Kerry O'Donnell
A novel crown rot pathogen of wheat discovered during pathogen surveys in Algeria in 2014 and 2015 is formally described as Fusarium algeriense. Multilocus molecular phylogenetic data resolved the eight isolates of this pathogen as a genealogically exclusive species lineage in the F. burgessii species complex. The previously described species of this complex, F. burgessii and F. beomiforme, produce abundant chlamydospores in culture, and their optimal temperature for growth is 30 C. In comparison, F. algeriense did not produce chlamydospores under the conditions tested and its optimal temperature for growth is 25 C...
February 13, 2018: Mycologia
https://www.readbyqxmd.com/read/29580158/quantifying-beetle-macrofungal-associations-in-a-temperate-biodiversity-hot-spot
#4
Mary Jane Epps, A Elizabeth Arnold
Beetles (Coleoptera) are often among the most abundant and diverse insects that feed on sporocarps of macrofungi, but little is known regarding their relative specialism or generalism in most communities. We surveyed >9000 sporocarps in montane hardwood forest in the Appalachian Mountains (USA) to characterize associations of mycophagous beetles and macrofungi. We used traditional metrics and network analyses to quantify relationships between sporocarp traits (mass, age, persistence, and toughness) and assemblages of adult beetles, drawing from >50 000 beetles collected over two survey years...
January 29, 2018: Mycologia
https://www.readbyqxmd.com/read/29533140/didymium-azorellae-a-new-myxomycete-from-cushion-plants-of-cold-arid-areas-of-south-america
#5
Diana Wrigley de Basanta, Arturo Estrada-Torres, Iván García-Cunchillos, Asunción Cano Echevarría, Carlos Lado
A new species of Didymium (Myxomycetes), D. azorellae, isolated from plant debris in a moist chamber, collected during studies of cold arid areas of Argentina and Peru, is described. It can be distinguished by its small size, the tightly packed layer of lime crystals on the peridium, the very scant, or absent, capillitium, and the unique spore ornamentation, especially by scanning electron microscopy. The species developed on dead leaves of cushion plants growing in the extremely harsh environments of the central Andean puna at almost 5000 m elevation and the Andino-Patagonian steppe...
January 25, 2018: Mycologia
https://www.readbyqxmd.com/read/29528270/toxin-producing-epichlo%C3%A3-bromicola-strains-symbiotic-with-the-forage-grass-elymus-dahuricus-in-china
#6
Chong Shi, Shazhou An, Zhengpei Yao, Carolyn A Young, Daniel G Panaccione, Stephen T Lee, Christopher L Schardl, Chunjie Li
Cool-season grasses (Poaceae subfamily Poöideae) are an important forage component for livestock in western China, and many have seed-transmitted symbionts of the genus Epichloë, fungal endophytes that are broadly distributed geographically and in many tribes of the Poöideae. Epichloë strains can produce any of several classes of alkaloids, of which ergot alkaloids and indole-diterpenes can be toxic to mammalian and invertebrate herbivores, whereas lolines and peramine are more selective against invertebrates...
January 25, 2018: Mycologia
https://www.readbyqxmd.com/read/29608410/armillaria-mexicana-a-newly-described-species-from-mexico
#7
Rubén Damián Elías-Román, Rosario Medel-Ortiz, Dionicio Alvarado-Rosales, John W Hanna, Amy L Ross-Davis, Mee-Sook Kim, Ned B Klopfenstein
Armillaria mexicana (Agaricales, Physalacriaceae) is described as a new species based on morphology, DNA sequence data, and phylogenetic analyses. It clearly differs from previously reported Armillaria species in North, Central, and South America. It is characterized by the absence of fibulae in the basidioma, abundant cheilocystidia, and ellipsoidal, hyaline basidiospores that are apparently smooth under light microscope, but slightly to moderately rugulose under scanning electron microscope. It is differentiated from other Armillaria species by macromorphological characters, including annulus structure, pileus and stipe coloration, and other structures...
January 19, 2018: Mycologia
https://www.readbyqxmd.com/read/29494311/the-impact-of-phenotypic-and-molecular-data-on-the-inference-of-colletotrichum-diversity-associated-with-musa
#8
Willie A S Vieira, Waléria G Lima, Eduardo S Nascimento, Sami J Michereff, Marcos P S Câmara, Vinson P Doyle
Developing a comprehensive and reliable taxonomy for the Colletotrichum gloeosporioides species complex will require adopting data standards on the basis of an understanding of how methodological choices impact morphological evaluations and phylogenetic inference. We explored the impact of methodological choices in a morphological and molecular evaluation of Colletotrichum species associated with banana in Brazil. The choice of alignment filtering algorithm has a significant impact on topological inference and the retention of phylogenetically informative sites...
January 16, 2018: Mycologia
https://www.readbyqxmd.com/read/29370576/circumscription-and-phylogeny-of-the-lepidostromatales-lichenized-basidiomycota-following-discovery-of-new-species-from-china-and-africa
#9
Dong Liu, Bernard Goffinet, Damien Ertz, André De Kesel, Xinyu Wang, Jae-Seoun Hur, Haixia Shi, Yanyun Zhang, Meixia Yang, Lisong Wang
Based on an exhaustive sampling of all known Lepidostromatales, a lineage of clavarioid lichen-forming basidiomycetes, we assess (i) the phylogenetic affinities of the six Chinese species currently accommodated in Multiclavula (Cantharellales) based on inferences from the 18S and 28S subunits of the nuclear ribosomal DNA repeat and (ii) the phylogenetic structure among Chinese populations of Lepidostromatales, based on the nuc rDNA ITS1-5.8S-ITS2 (internal transcribed spacer [ITS]) regions. Multiclavula fossicola and M...
January 15, 2018: Mycologia
https://www.readbyqxmd.com/read/29482479/molecular-phylogeny-of-neodevriesia-with-two-new-species-and-several-new-combinations
#10
Meng-Meng Wang, Belle Damodara Shenoy, Wei Li, Lei Cai
To identify Cladosporium-like isolates associated with marine algae, phylogenetic analyses were conducted using a combined data set of the nuc rDNA internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2 = ITS), 28S gene, and partial RNA polymerase II second largest subunit (RPB2). These isolates were confirmed as belonging to Neodevriesia (Neodevriesiaceae), a genus recently segregated from Cladosporium. Two new species, Neodevriesia cladophorae and N. grateloupiae, are described on the basis of morphological and phylogenetic distinctions, and this is the first report of Neodevriesia species from the marine environment...
December 28, 2017: Mycologia
https://www.readbyqxmd.com/read/29482471/vitamin-b-2-riboflavin-increases-drought-tolerance-of-agaricus-bisporus
#11
Alexander Guhr, Marcus A Horn, Alfons R Weig
Drought is a stressor for many soil-inhabiting organisms. Although plants have been extensively investigated for drought-adaptive mechanisms, little information is available for fungi. Antioxidants are especially relevant, since desiccation is accompanied by an excessive intracellular production of reactive oxygen species. Riboflavin (vitamin B2 ) is one antioxidant regulating drought tolerance in plants. A similar function may exist in fungi. Here, we examined the respiratory and transcriptional responses of Agaricus bisporus to drought and the impact of riboflavin...
December 20, 2017: Mycologia
https://www.readbyqxmd.com/read/29494282/polyozellus-multiplex-thelephorales-is-a-species-complex-containing-four-new-species
#12
Andrus Voitk, Irja Saar, Steven Trudell, Viacheslav Spirin, Michael Beug, Urmas Kõljalg
Geographic, morphological, and internal transcribed spacer (ITS)-based molecular review of collections identified as Polyozellus multiplex revealed that it is a complex of five phylogenetic species. Average spore size-either less or more than 7 × 6 µm-splits the complex into a small-spored group of two (P. multiplex and P. atrolazulinus) and a large-spored group of three (P. mariae, P. marymargaretae, and P. purpureoniger). Basidiocarps of the small-spored species are somewhat smaller than the large-spored ones, are various shades of blue, dark all the way to black, with brownish tomentum only in early growth, have dark context, and have pilei that tend to flare out at the edge...
December 14, 2017: Mycologia
https://www.readbyqxmd.com/read/29517949/lichenicolous-species-of-hainesia-belong-to-phacidiales-leotiomycetes-and-are-included-in-an-extended-concept-of-epithamnolia
#13
Ave Suija, Pieter van den Boom, Erich Zimmermann, Mikhail P Zhurbenko, Paul Diederich
The lichenicolous taxa currently included in the genus Hainesia were studied based on the nuclear rDNA (18S, 28S, and internal transcribed spacer [ITS]) genes. The authors found that lichenicolous taxa form a distinct lineage sister to Epiglia gloeocapsae (Phacidiales, Leotiomycetes), only distantly related to the type species of Hainesia (Chaetomellaceae, Helotiales). Owing to morphological similarities, the authors include the lichenicolous species into the previously monotypic genus Epithamnolia. A new species, Epithamnolia rangiferinae, is described, several names are reduced into synonymy, and a key to the species of Epithamnolia is provided...
December 13, 2017: Mycologia
https://www.readbyqxmd.com/read/29494271/molecular-identification-and-in-vitro-antifungal-susceptibility-of-scedosporium-complex-isolates-from-high-human-activity-sites-in-mexico
#14
Mariana Elizondo-Zertuche, Rogelio de J Treviño-Rangel, Efrén Robledo-Leal, Carolina E Luna-Rodríguez, Margarita L Martínez-Fierro, Iram P Rodríguez-Sánchez, Gloria M González
The genus Scedosporium is a complex of ubiquitous moulds associated with a wide spectrum of clinical entities, with high mortality principally in immunocompromised hosts. Ecology of these microorganisms has been studied performing isolations from environmental sources, showing a preference for human-impacted environments. This study aimed to evaluate the presence and antifungal susceptibility of Scedosporium complex species in soil samples collected in high-human-activity sites of Mexico. A total of 97 soil samples from 25 Mexican states were collected...
December 13, 2017: Mycologia
https://www.readbyqxmd.com/read/29388883/two-new-geosmithia-species-in-g-pallida-species-complex-from-bark-beetles-in-eastern-usa
#15
Y-T Huang, M Kolařík, M T Kasson, J Hulcr
Species of Geosmithia are cosmopolitan but understudied fungi, and most are associated with phloem-feeding bark beetles on various woody hosts. We surveyed 207 bark and ambrosia beetles from 37 species in the eastern USA for associated fungi. The community is dominated by species in the G. pallida species complex (GPSC) and included several Geosmithia isolates that appear to be new to science. The new Geosmithia isolates exhibited the characteristic brownish-colored colonies typical for the G. pallida species complex and were phylogenetically resolved as two genealogically exclusive lineages based on a concatenated multilocus data set based on the internal transcribed spacers (ITS) of the nuc rDNA (ITS1-5...
December 4, 2017: Mycologia
https://www.readbyqxmd.com/read/29474112/three-new-species-of-phylloporia-hymenochaetales-with-dimitic-hyphal-systems-from-tropical-china
#16
Yuanyuan Chen, Lin Zhu, Jiahui Xing, Baokai Cui
Three new species of Phylloporia from tropical China are described in this study: P. manglietiae, P. pendula, and P. pseudopectinata. Phylloporia manglietiae is characterized by triquetrous to ungulate basidiomata, with 6-8 pores/mm, a monomitic to dimitic hyphal system, and broadly ellipsoidal basidiospores, 3-3.5 × 2-2.5 μm. Phylloporia pendula has small, imbricate, and pendent basidiomata, with 7-9 pores/mm, a dimitic hyphal system, and broadly ellipsoidal basidiospores, 3.5-4 × 2.5-3 μm. Phylloporia pseudopectinata differs from other species of Phylloporia by its applanate basidiomata, with 8-9 pores/mm, a dimitic hyphal system, and subglobose basidiospores, 3-3...
December 1, 2017: Mycologia
https://www.readbyqxmd.com/read/29370582/first-report-of-the-post-fire-morel-morchella-exuberans-in-eastern-north-america
#17
Andrew N Miller, Daniel B Raudabaugh, Teresa Iturriaga, P Brandon Matheny, Ronald H Petersen, Karen W Hughes, Matthias Gube, Rob A Powers, Timothy Y James, Kerry O'Donnell
Reports of true morels (Morchella) fruiting on conifer burn sites are common in western North America where five different fire-adapted species of black morels (Elata Clade) have been documented based on multilocus phylogenetic analyses. Fruiting of post-fire morels in eastern North America, by comparison, are rare and limited to a report from Minnesota in 1977 and eastern Ontario in 1991. Here, nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) sequences were used to identify the post-fire morel that fruited in great abundance the year following the 2012 Duck Lake Fire in the Upper Peninsula of Michigan and after the 2016 large-scale fire in the Great Smoky Mountains National Park in Tennessee as M...
November 30, 2017: Mycologia
https://www.readbyqxmd.com/read/29370579/epichlo%C3%A3-hybrida-sp-nov-an-emerging-model-system-for-investigating-fungal-allopolyploidy
#18
Matthew A Campbell, Brian A Tapper, Wayne R Simpson, Richard D Johnson, Wade Mace, Arvina Ram, Yonathan Lukito, Pierre-Yves Dupont, Linda J Johnson, D Barry Scott, Austen R D Ganley, Murray P Cox
Endophytes of the genus Epichloë (Clavicipitaceae, Ascomycota) frequently occur within cool-season grasses and form interactions with their hosts that range from mutualistic to antagonistic. Many Epichloë species have arisen via interspecific hybridization, resulting in species with two or three subgenomes that retain all or nearly all of their original parental genomes, a process termed allopolyploidization. Here, we characterize Epichloë hybrida, sp. nov., a mutualistic species that has increasingly become a model system for investigating allopolyploidy in fungi...
November 17, 2017: Mycologia
https://www.readbyqxmd.com/read/29345534/a-new-stipitate-species-of-crepidotus-from-india-and-thailand-with-notes-on-other-tropical-species
#19
Laura Guzmán-Dávalos, C K Pradeep, K B Vrinda, A Manoj Kumar, Virginia Ramírez-Cruz, María Herrera, Alma Rosa Villalobos-Arámbula, Kasem Soytong, Timothy J Baroni, M Catherine Aime
A new Asian species of Crepidotus (Basidiomycota, Agaricales), C. asiaticus, is presented based on morphological and nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS) and large subunit (28S) sequence data. This new species, found in India and Thailand, is characterized by the centrally stipitate medium-sized basidiomata, orange to reddish brown pileus, white to brownish orange lamellae, and white stipe. Based on morphology, C. asiaticus is similar to the neotropical C. thermophilus. However, the microscopic characters, especially the size and shape of the basidiospores, can be used to distinguish these two taxa, as well as their geographic distributions...
November 14, 2017: Mycologia
https://www.readbyqxmd.com/read/29211626/molecular-analyses-uncover-the-phylogenetic-placement-of-the-lichenized-hyphomycetous-genus-cheiromycina
#20
Lucia Muggia, Riccardo Mancinelli, Tor Tønsberg, Agnieszka Jablonska, Martin Kukwa, Zdeněk Palice
The genus Cheiromycina is one of the few genera of lichenized hyphomycetes for which no sexual reproductive stages have been observed. The genus includes species from boreal to temperate regions of the Northern Hemisphere where it is found growing on bark or wood. Congeners in Cheiromycina are characterized by a noncorticate thallus, nearly immersed in the substrate and presenting powdery unpigmented sporodochia, and containing chlorococcoid photobionts. The relationships of members of Cheiromycina with other fungi are not known...
July 2017: Mycologia
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