Morphological and molecular characterization of the strawberry black leaf spot pathogen referred to as the strawberry pathotype of Alternaria alternata
Publication date: Available online 3 July 2018Source: MycoscienceAuthor(s): Junji Nishikawa, Chiharu NakashimaAbstractThe remaining unclarified taxon among the seven known pathotypes of host-selective toxin (HST)-producing Alternaria alternata, namely, the strawberry pathotype (the strawberry black leaf spot pathogen), is taxonomically revised and re-described herein. According to our morphological observations, reference isolates of strawberry and Japanese pear pathotypes, which are toxic to leaves of Japanese pear ‘Nijisseiki’, have conidia that are formed in chains of 3–13, usually without lateral branches, after ...
Source: Mycoscience - July 5, 2018 Category: Biology Source Type: research
Hygrophorus yukishiro sp. nov., a new vernal edible mushroom from Nagano Prefecture, Japan
Publication date: Available online 4 July 2018Source: MycoscienceAuthor(s): Naoki Endo, Rikiya Tokoo, Masaki Fukuda, Akiyoshi YamadaAbstractA novel basidiomycetous species, Hygrophorus yukishiro, is described from Japan. The basidiomata of this fungus have been referred to as “yuki-shiro”, “yuki-take”, and “yuki-wari”, and used as an edible mushroom in the central region of Nagano, Japan. Hygrophorus yukishiro fruits in the early spring season under oak-dominated stands. Morphological and phylogenetic analyses of the internal transcribed spacer region of the nuclear ribosomal RNA gene indicated that H. yukishir...
Source: Mycoscience - July 5, 2018 Category: Biology Source Type: research
Hygrophorus yukishiro sp. nov., a new vernal edible mushroom from Nagano Prefecture, Japan
Publication date: Available online 4 July 2018 Source:Mycoscience Author(s): Naoki Endo, Rikiya Tokoo, Masaki Fukuda, Akiyoshi Yamada A novel basidiomycetous species, Hygrophorus yukishiro, is described from Japan. The basidiomata of this fungus have been referred to as “yuki-shiro”, “yuki-take”, and “yuki-wari”, and used as an edible mushroom in the central region of Nagano, Japan. Hygrophorus yukishiro fruits in the early spring season under oak-dominated stands. Morphological and phylogenetic analyses of the internal transcribed spacer region of the nuclear ribosomal RNA gene indicated that H. yukishir...
Source: Mycoscience - July 5, 2018 Category: Biology Source Type: research
Morphological and molecular characterization of the strawberry black leaf spot pathogen referred to as the strawberry pathotype of Alternaria alternata
Publication date: Available online 3 July 2018 Source:Mycoscience Author(s): Junji Nishikawa, Chiharu Nakashima The remaining unclarified taxon among the seven known pathotypes of host-selective toxin (HST)-producing Alternaria alternata, namely, the strawberry pathotype (the strawberry black leaf spot pathogen), is taxonomically revised and re-described herein. According to our morphological observations, reference isolates of strawberry and Japanese pear pathotypes, which are toxic to leaves of Japanese pear ‘Nijisseiki’, have conidia that are formed in chains of 3–13, usually without lateral branches, after 7...
Source: Mycoscience - July 4, 2018 Category: Biology Source Type: research
Herpobasidium filicinum (Eocronartiaceae, Platygloeales) occurs on Dennstaedtia wilfordii (Dennstaedtiaceae) in Japan
Publication date: Available online 2 July 2018 Source:Mycoscience Author(s): Taiga Kasuya, Yoshitaka Ono A fungus parasitic on a fern, Dennstaedtia wilfordii (Dennstaedtiaceae), was found at the foothill of Mt. Fuji, Yamanashi Prefecture, Japan. Its hyphae spread within host mesophyll cells and through intercellular spaces, forming coiled haustoria in the epidermal and mesophyll cells. The hyphae emerged either through stomata or by disrupting epidermal cell junctions. The hyphae spreading over the abaxial leaf surface generated one-septate, thin-walled basidia. All the morphological features observed were characterist...
Source: Mycoscience - July 2, 2018 Category: Biology Source Type: research
Lactifluus kigomaensis and L. subkigomaensis: Two look-alikes in Tanzania
Publication date: Available online 30 June 2018 Source:Mycoscience Author(s): Ruben De Lange, Eske De Crop, Lynn Delgat, Donatha Tibuhwa, Deo Baribwegure, Annemieke Verbeken A look-alike of Lactifluus kigomaensis, described in 2012 from primary miombo woodlands in the Kigoma Province of northwestern Tanzania, is proposed here as L. subkigomaensis. The phylogeny based on the molecular markers ITS, LSU, RPB1 and RPB2 shows that L. subkigomaensis is a sister species to L. kigomaensis. Detailed descriptions of both species are given here, aiming at finding good characters to unravel these look-alikes. Both species are...
Source: Mycoscience - July 1, 2018 Category: Biology Source Type: research
Inonotus taiwanensis sp. nov. (Basidiomycota) from Taiwan
Publication date: Available online 16 April 2018 Source:Mycoscience Author(s): Sheng-Hua Wu, Yu-Ting Lin, Chi-Liang Chern, Shin-Yi Ke Inonotus taiwanensis (Hymenochaetales) is described as a new species collected from southern Taiwan, and all specimens grew on the trunk of Trema tomentosa. This new species is characterized by having resupinate, effuse-reflexed to pileate basidiocarps, bright yellow context, long setal hyphae in context and trama, setae in hymenium and trama, and fairly small basidiospores. Maximum likelihood and Bayesian inference phylogenies inferred from both sequences of 28S and internal transcrib...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
Xylodon subflaviporus sp. nov. (Hymenochaetales, Basidiomycota) from East Asia
Publication date: Available online 16 April 2018 Source:Mycoscience Author(s): Che-Chih Chen, Sheng-Hua Wu, Chi-Yu Chen Xylodon subflaviporus (Hymenochaetales, Basidiomycota) is described as a new species collected from tropical and subtropical regions of East Asia. This new species is characterized by resupinate basidiocarps, a poroid hymenophore, pseudodimitic hyphal system, nodose-septate hyphae, four types of cystidia (capitate, acicular to cylindrical, subulate to ventricose, and apically-encrusted), and thin-walled, colorless, smooth and ellipsoid basidiospores. Bayesian, Maximum Likelihood and Maximum Parsimony...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
Reclassification of current Dictyostelium mucoroides strain Dm7 based on rRNA sequences and morphological features
Publication date: Available online 18 May 2018 Source:Mycoscience Author(s): Kurato Mohri, Shin-ichi Kawakami, Seido Nagano, Hideko Urushihara Recent classification and phylogenetic analyses of dictyostelids are based on molecular sequences, but not all strains have been examined using this approach. Since the original identification in 1869, several strains called Dictyostelium mucoroides have been isolated; however, molecular taxonomic analyses of these strains remain insufficient. We therefore attempted to verify classification of one of these strains (Dm7) using rRNA sequences. As a result, strain Dm7 was found t...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
Morphology and molecular phylogeny of Brasiliomyces malachrae, a unique powdery mildew distributed in Central and South America
This study was performed to describe the sexual and asexual morphs of B. malachrae on Malvastrum coromandelianum in detail, and to clarify the phylogenetic placement of this fungus. The asexual morph of this species is characterized by having hyaline ectophytic mycelium with lobed hyphal appressoria and catenescent conidia. Molecular phylogenetic analyses based on 18S, 5.8S, and 28S rRNA gene sequences revealed that B. malachrae is a sister to the genus Erysiphe and situated at the boundary between tribes Golovinomyceteae and Erysipheae, which supports its unique phylogenetic position. The evolutionary relationships amon...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
A new species and a new record of Helicomyces from Taiwan
Publication date: Available online 26 May 2018 Source:Mycoscience Author(s): Chang-Hsin Kuo, Teik-Khiang Goh Helicomyces geniculatus sp. nov. from decaying wood submerged in a freshwater stream at Juchi Town of Alishan area, Chiayi County, Taiwan, is described and illustrated. It differs from other Helicomyces species in having geniculate conidiophores arising from repent hyphae and also borne on erect setae. Abundant stalked sclerotia were also found in this species. Helicomyces torquatus is described in this paper as a new record for Taiwan, with new observation. The phylogenetic relationship of H. geniculatus, H. ...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
Amazonian bird's nest fungi (Basidiomycota): Current knowledge and novelties on Cyathus species
Publication date: Available online 28 May 2018 Source:Mycoscience Author(s): Thiago Accioly, Rhudson H.S.F. Cruz, Nathalia M. Assis, Noemia K. Ishikawa, Kentaro Hosaka, María P. Martín, Iuri G. Baseia The genus Cyathus is historically subsampled in the Amazon Forest, which is a potential source of striking taxonomic richness. In this paper, a checklist of Amazonian Cyathus species with detailed descriptions, illustrations and comments of five uncommon species are given. A new species named C. albinus is proposed with morphological and molecular data, being mainly characterized by a light color hirsute exoperidi...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
The 10th International Symposium on Arctic and Alpine Mycology
Publication date: Available online 7 June 2018 Source:Mycoscience Author(s): Tamotsu Hoshino, Nobuko Tuno, Yousuka Degawa, Taiga Kasuya, Yuka Yajima, Ei Kawahara, Ikuo Nose (Source: Mycoscience)
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
Hamatispora, a new genus of aquatic fungi in Microthyriales isolated from fallen leaves in Vietnam
Publication date: Available online 11 June 2018 Source:Mycoscience Author(s): Le Thi Hoang Yen, Kaoru Yamaguchi, Yasuhisa Tsurumi, Duong Van Hop, Katsuhiko Ando A new aquatic fungus was isolated from submerged, decaying leaves collected at Phu Quoc Island in Vietnam. The fungus produced hyaline, unique-shaped conidia consisting of a hook-shaped main axis and three arms at the helicoid part of the main axis. Based on its conidial development and morphological characteristics, Hamatispora phuquocensis was newly introduced. Phylogenetic analyses based on LSU nrDNA sequences showed that it clusters with Microthyrium spp...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
Changes of trehalose content and trehalose-degrading activity during fruit-body formation and autolysis in Pleurotus sp.
Publication date: Available online 13 June 2018 Source:Mycoscience Author(s): Alireza Arastoo, Masami Nakazawa, Tatsuji Sakamoto, Hitoshi Kobayashi, Kenji Ouchi, Satoshi Inatomi, Mitsuhiro Ueda We studied how the content and degrading activity of trehalose changed during fruit-body development and autolysis. During the process of autolysis, the trehalose content of whole fruit-bodies decreased sharply whereas the trehalose-degrading activity increased toward the inner region from the outer region of the pilei. Conversely, the trehalose content during autolysis decreased toward the inner region from the outer regio...
Source: Mycoscience - June 24, 2018 Category: Biology Source Type: research
