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Psathyrella obtusata. A.H. Smith 73998, MICH33261; PC Pleurocystidia; MC Marginal Cystidia; S1 Spores in water; S2 Spores in KOH.
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Specimens belonging to taxa traditionally assigned to the subsection Spadiceogriseae of the genus Psathyrella were analyzed both morphologically and molecularly. Samples included mainly European collections, selected GenBank accessions, and specimens of various North American taxa described by Smith (1972) and deposited at the Herbarium of the Univ...
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Citations
... The shape of pleurocystidia is peculiar as they can vary from having mainly a slender apex (conical, fusiform, lageniform), as in the descriptions by Kits van Waveren (1985: P. rannochii and P. artemisiae var. microspora), Örstadius (2015, 2023) and Voto et al. (2019: revision of the voucher K.A. Harrison 8023, MICH65721, misidentified by Smith as P. obtusata) to having a conspicuous amount of utriform elements, as in the descriptions by Weholt (1987: P. caespitosa), Örstadius & Huhtinen (1996: revision of Psathyra solitaria) and the present one. Smith's (1972) type revision offers no figure; however, he reports pleurocystidia as fusoidventricose with an acute to obtuse apex. ...
A collection of Psathyrella atomatoides from France is documented with macro and micro descriptions and images. Comments on its most prominent characters and comparisons with closest taxa are made.
... Candolleomyces subcandolleanus is very close to the present species in gross morphology however, distinct by its slightly smaller basidioma (5-20 mm), basidiospores without germ pore, terrestrial habitat and molecularly by 136 base pairs. Larger basidiospores (9-9.5 × 5-5.5 µm), presence of 2-spored basidia and herbicolous habitat distinguishes C. bivelatus from the present species (Voto et al. 2019). Candolleomyces cladii-marisci originally described from Italy is distinct in having larger basidiospores (7.2-11.8 ...
Continuing survey of the Psathyrellaceae of Kerala State, India, has resulted in the discovery of a remarkable Candolleomyces species from the tropical forests. Both morphological and molecular analyses of the internal transcribed spacer (nrITS) region confirmed the novelty and placement of the species in the genus Candolleomyces. The species is described with macro and microphotographs, phylogeny and a comparison with related species of Candolleomyces.
... Molecular studies have confirmed the placement of Psathyrella in Psathyrellaceae and have improved our understanding of Psathyrella and related genera (Coprinellus, Coprinopsis, Cystoagaricus, Homophron, Kauffmania, Lacrymaria, Parasola and Typhrasa) (Örstadius et al. 2015;Yan and Bau 2018;Sicoli et al. 2019). Molecular phylogeny has revealed that Psathyrella is monophyletic and Psathyrella species can be classified into the Psathyrella sensu stricto group (Padamsee et al. 2008;Örstadius et al. 2015;Voto et al. 2019). The sequence data of two protein-coding genes, tub and tef have also been used in species delimitation of closely related Psathyrella species (Nagy et al. 2013;Örstadius et al. 2015). ...
Fungi play vital roles in ecosystems as endophytes, pathogens and saprobes. The current estimate of fungal diversity is highly
uncertain, ranging from 1.5 to 12 million, but only around 150,000 species have been named and classified to date. Since
the introduction of DNA based methods for species identification, the number of newly described taxa has increased from
approximately 1000 to around 2000 yearly. This demonstrates the importance of DNA based methods to identify and distinguish species, especially cryptic species. Many novel species from recent studies have been found in historically understudied
regions and habitats, but these still represent only a small percentage of the estimated species. In this paper, we examine 16
genera from the top 40 most speciose genera as listed in Species Fungorum as case studies to examine the diversity of taxa in
each genus. The genera treated herein are Cercospora, Diaporthe, Meliola, Passalora, Phyllachora, Phyllosticta, Pseudocercospora, Ramularia (ascomycetes) and Cortinarius, Entoloma, Inocybe, Marasmius, Psathyrella, Puccinia, Russula, Uromyces
(basidiomycetes). We critically evaluate the number of species in these genera and correlate these numbers with the number
of entries in GenBank. We introduce 18 new species Apiospora multiloculata, Candolleomyces thailandensis, Cortinarius
acutoproximus, Cortinarius melleoalbus, Cortinarius pacificus, Cortinarius parvoacetosus, Diaporthe guizhouensis, Entoloma
pseudosubcorvinum, Inocybe meirensongia, Marasmius albulus, Marasmius obscuroaurantiacus, Meliola camporesii, Phyllachora siamensis, Phyllosticta doitungensis, Picipes yuxiensis, Pseudocercospora vignae, Puccinia maureanui and Russula
inornata. We also introduce a new record of Candolleomyces cladii-marisci and Inocybe iringolkavensis. We discuss the
genera Colletotrichum and Pleurotus that are speciose, but do not occur in the top 40. We hypothesize whether there might be
more species in these genera and discuss why these genera have some of the largest number of species.
... μm, clamped basidia and no cystidia. Psathyrella hellebosensis D. Deschuyteneer, A. Melzer (Figure 8j) was recently described from Belgium [74] and was later reported from riparian alder habitats in Italy [75]. The morphological features of our collection are in agreement with the morphology of Belgian and Italian basidiomes, but since it corresponds to a rarely reported species, a detailed description of our material is hereby provided: pileus up to 3 cm in diam., hygrophanous from dark reddish-brown to greyish-beige, with scanty remains of veil; lamellae subdistant with whitish edge; stipe 2-4 × 0.2-0.3 ...
... The material was collected from wet soil by the alluvial stream banks. This species shows high phylogenetic affinity to P. thujina A. H. Sm. by using ITS sequences only; however, it is clearly separated when the tef-1α marker is added in the phylogenetic analysis, while it is also distinguished by its distinctly larger and prominently phaseoliform spores [75]. ...
Alluvial forests dominated by black alder (Alnus glutinosa) are widespread in Europe along river banks and watercourses forming a habitat of renowned ecological/conservation importance. Despite the considerable interest this habitat has attracted in terms of the associated fungal diversity, very few pertinent data are available from the eastern Mediterranean. Andros island (Aegean Sea, Greece) hosts the southernmost population of A. glutinosa in the Balkan Peninsula; such stands have been systematically inventoried for several years in respect to macrofungi. In total, 187 specimens were collected and studied by examining morphoanatomic features and by evaluating (when necessary) the outcome of sequencing the internal transcribed spacer (ITS) region of nuclear ribosomal DNA (nrDNA) to elucidate their identity and obtain an insight into phylogenetic relationships. As a result, 106 species were recorded, 92 are saprotrophic and 14 form ectomycorrhizae (ECM) with alders. Twenty-one species are first national records, while 68 other species are reported for the first time from this habitat in Greece. Several findings of particular interest due to their rarity, ecological preferences and/or taxonomic status are presented in detail and discussed, e.g. six Alnicola taxa, Cortinarius americanus, Lactarius obscuratus, Paxillus olivellus and Russula pumila (among the ECMs), and the saprotrophs Entoloma uranochroum, Gymnopilus arenophilus, Hyphoderma nemorale, Lepiota ochraceofulva, Phanerochaete livescens and Psathyrella hellebosensis.
... Padamsee et al. Nagy et al. (2013), Moreno et al. (2015), Yan & Bau (2018) and Voto et al. (2019) demonstrated that this clade is well-supported, characterized by species with pale colored basidiomata with fibrillose veil, and lacking pleurocystidia Among morphologically close species that fall in the same clade, the European P. leucotephra is the most similar species. It also grows caespitosely in large clusters of 10 basidiomata, presents utriform to utriform-lageniform cheilocystidia, small hilar appendix and inconspicuous germ pore on basidiospores, pale colored pileus, and whitish sericeous-fibrillose stipe. ...
Psathyrella atlantica is described based on material collected in an Atlantic Forest fragment in the state of Pernambuco, Northeast Brazil. It is characterized by slender, whitish and caespitose basidiomata; pileus with orange, small and floccose-squamulose veil remnants; presence of a persistent but fragile-membranous annulus; basidiospores 5-7 × 3-4 µm; and inconspicuous germ pore. A full description plus illustrations and comments on morphological and phylogenetic data are provided.
... Microscopy routines generally followed Largent et al. (1977). Several identification keys (e.g., Knudsen & Vesterholt 2008, Justo et al. 2011, Antonín et al. 2013, Zervakis et al. 2014, Voto et al. 2019, and some of the literature in He et al. (2019) for specific genera were used. A full list of examined specimens is available in Suppl. ...
A first annotated checklist of agarics and boletes in Iran is presented based on literature and new collections. A total number of 128 new DNA sequences, obtained from the nrDNA ITS region as well as the nrLSU, is provided. Based on vouchered specimens, 19 species are newly recorded from Iran, all provided with nrDNA data from basidiomata. Overall, 585 species (comprising 556 agarics and 29 bolete species) are recorded from Iran, representing 147 genera and 34 families. The order Agaricales encompasses 82% of the species. Twenty-eight species are excluded from the Iranian mycobiota. The Hyrcanian forests harbor 79% of the species, with Mazandaran being the most species-rich province in the country. The three largest genera are Russula, Cortinarius, and Inocybe. We also scrutinized the available DNA sequences of Iranian agarics and boletes deposited in public databases. It is shown that 64 species of agarics and boletes in Iran are from environmental sequences, and nine species have been retrieved as plant endophytes. In total, only 24% of Iranian species are shown to have at least one nrITS sequence in GenBank or UNITE. Our analyses reveal that 42% of records in Iran arise merely from abstracts presented at various conferences, most of which lack sufficient characterization and are suggested to be considered tentatively. General recommendations are given to avoid dissemination of low quality and ambiguous species records. This study fills in some of the gaps in our knowledge of agarics and boletes in Iran and provides a framework for biodiversity and phylogenetic studies.
Key words: Agaricomycetes, checklists, Hyrcanian forests, macrobasidiomycetes, mushrooms, Zagros forests
... Destacar, por tanto, que no II Bioblitz Courel conseguíuse inventariar e achegar datos fenolóxicos e corolóxicos dunha ampla variedade de organismos que, conxuntamente cos do I Bioblitz Courel, representan un importante número que con todo segue sendo so unha mostra da enorme biodiversidade deste territorio. Subliñar este ano o notable aumento de citas de insectos grazas á participación de naturalistas especializados en entomoloxía e aínda que polas condicións de tempo seco as observacións de frutificacións de fungos reducíronse respecto da anterior edición, sobresae unha cita: Psathyrella hellebosensis Deschuyteneer & Melzer, un raro taxon (ou escasamente coñecido) cuxa identificación foi confirmada polo estudo molecular do material atopado, e do que soamente nos constan citas publicadas para Bélxica, Francia e Italia (DESCHUYTENEER & MELZER, 2017;VOTO et al., 2019), polo que sería primeira cita publicada para Galicia, España e península ibérica. ...
Micolucus 6: 73-91.
RESUMO: Este artigo resume os aspectos máis relevantes do "II BIOBLITZ ANCARES-COUREL, edición COUREL" evento cuxo principal obxectivo, satisfactoriamente acadado, é favorecer o coñecemento e conservación da biodiversidade e os valores ambientais do territorio, a través de actividades didácticas e respectuosas de ciencia cidadá. Presentase a listaxe de 607 taxons inventariados durante a súa realización, por reinos: 312 Animalia, 253 Plantae, e 42 Fungi, e que conxuntamente coa do I BIOBLITZ de 2018 alcanzan os 729: 364 Animalia, 281 Plantae, 83 Fungi e 1 Protozoa.
ABSTRACT: This paper resumes the most relevant aspects of "II BIOBLITZ ANCARES-COUREL, edición COUREL", an event which main objective, satisfactorily achieved, is to favour the biodiversity's knowledge and conservation and the territory's ambiental values, via didactic and respectful activities of citizen science. The list of 607 inventoried taxa during it's realization is presented, by kingdoms: 312 Animalia, 253 Plantae, 42 Fungi, and that, in addition to the inventory from I Bioblitz of 2018, they reach 729: 364 Animalia, 281 Plantae, 83 Fungi and 1 Protozoa.
Three species of Candolleomyces D. Wächt. & A. Melzer (Agaricomycetes, Psathyrellaceae) were identified in the course of our studies to characterize the psathyrelloid fungi of Kerala state, India. Among these, two species, e.g., Candolleomyces brun-neopileatus and Candolleomyces niveofloccosus, are new to science, while Candolleomyces asiaticus represents a new Indian record. Detailed descriptions, photographs, and comparison of these species are provided based on morphology and molecular data. A phylogenetic reconstruction based on maximum likelihood analyses of a combined nrITS and nrLSU sequence is also provided.
Dispersion and atmospheric transport of fungal bioaerosols help fungal migration and colonization worldwide. The particle size of fungal propagules mainly controls this and influences the taxonomic composition of fungal bioaerosols in a region. The study reports the size-resolved genomic characterization of the pathogenic and non-pathogenic fungal bioaerosols found in the Indian subcontinent. Scanning Electron Microscope images and results from size-resolved DNA analysis using the next-generation sequencing (NGS) method inferred the presence of unicellular and multi-cellular spores and large fungal fragments in the bioaerosols. Further investigations inferred the presence of 67 crop pathogenic fungal OTUs capable of causing lethal crop diseases threatening the country’s food security and agricultural economy. Many other pathogenic fungal species, which could affect plants (plants excluding the crops), humans, and insects were also found in the bioaerosols. About 176 non-pathogenic OTUs inferred the presence of some beneficial fungal species in bioaerosols. Community diversity and similarities shared by each pathogenic and non-pathogenic category implied that the pathogenic fungal categories shared many OTUs within the categories, compared to the non-pathogenic fungal categories, explicitly explaining the evolution potential of pathogenic fungal species to infect a broad host range. Such studies on bioaerosol characterization based on host-pathogen interactions help to predict pathogenic fungal invasions and help the government to ensure biosecurity.
Alonso, J., Rigueiro, A., (2020). Catálogo da macromicobiota das montañas do Courel (Galicia, NO España). Monografías do Ibader - Serie Cadernos da Estación Científica do Courel. Ibader. Universidade de Santiago de Compostela. Lugo.
Resumo Os traballos de catalogación da biodiversidade son imprescindibles como base de coñecemento para garantir a sustentabilidade do medio natural, así como para a definición e aplicación de proxectos de xestión e desenvolvemento dos territorios. Este traballo é unha aproximación ao coñecemento e catalogación da macromicobiota correspondente ás divisións Basidiomycota e Ascomycota das montañas do Courel, inventariando e describindo 410 taxons para o territorio, que xunto con 126 distintos taxons previamente citados por outros autores, e tamén recollidos neste traballo, fan un total de 536 taxons referenciados, un importante número reflexo da gran biodiversidade fúnxica das montañas do Courel, o que se corresponde coa diversidade xeolóxica, climática e florística deste territorio excepcional. Dos 410 taxons descritos, 322 son primeiras citas publicadas para o territorio das montañas do Courel, 109 para a provincia de Lugo, 48 para Galicia, 5 para a península ibérica, e unha é primeira cita europea: Simocybe serrulata. O estudo realizouse durante algo máis de 3 anos (outono de 2016 ata finais 2019) de periódico traballo de prospección micolóxica no territorio, complementado nos laboratorios da Estación Científica do Courel e do Departamento de Produción Vexetal e Proxectos de Enxeñaría da Escola Politécnica Superior de Enxeñaría (USC-Campus Terra de Lugo).
Palabras clave micobiota, Basidiomycota, Ascomycota, biodiversidade fúnxica, Lugo.
Abstract Cataloguing works about biodiversity are essential as a knowledge base in order to guarantee the natural environment sustainability, as well as for the definition and application of projects of management and development of the territories. This work is an approach to the knowledge and cataloguing of the macromycobiota of the divisions Basidiomycota and Ascomycota of the Courel montains, describing 410 taxa for the territory, which together with 126 taxa previously record by other authors, and also collected in this work, make a total of 536 referenced taxa, an important number reflecting the great fungal biodiversity of the Courel mountains, which corresponds to the geological, climatic and floristic diversity of this exceptional territory. Of the 410 descripted taxa, 323 are first time published records in the territory of Courel mountains, 109 in the province of Lugo, 48 in Galicia, 5 in the Iberian Peninsula, and one in Europe: Simocybe serrulata. The study was made during a bit more than 3 years (autumn 2016, end of 2019) via periodic work of mycologic prospection in the territory, complemented in the labs of the Courel Scientific Station and the Department of Crop Production of the Higher Polytechnic Engineering School (USC-Campus Terra, Lugo).
Keywords mycobiota, Basidiomycota, Ascomycota, fungal biodiversity, Lugo.
