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Fidel Landeros - One of the best experts on this subject based on the ideXlab platform.
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Helvella jocatoi sp nov pezizales ascomycota a new species from h lacunosa complex with cultural importance in central mexico abies religiosa forests
Phytotaxa, 2021Co-Authors: Fidel Landeros, Felipe M Ferruscarico, Laura Guzmandavalos, Edgardo Ulises Esquivelnaranjo, Noemi Matiasferrer, Cristina Burrolaaguilar, Gala Artemisa Viurcosmartinez, Roberto GaribayorijelAbstract:Helvella lacunosa is a species complex, with Helvella lacunosa s.s. not currently distributed in America. The objective of this study was to resolve the taxonomy of specimens from central Mexico identified as Helvella lacunosa s.l. associated with Abies religiosa forests. The nuclear ITS and LSU regions were PCR-amplified and sequenced from dry herbaria specimens. Phylogenetic analyses were based on Parsimony, Maximum Likelihood and Bayesian Inference approaches. Sequences of Helvella from A. religiosa forests grouped into a well-supported lineage within the North American clade together with Helvella dryophila (associated with Quercus in western USA) and Helvella vespertina (associated with conifer forests in western USA). Therefore, we describe and illustrate Helvella jocatoi as a new species based on phylogeny and morphological traits. In central Mexico, this taxon is an edible mushroom known as “gachupin”, has high cultural importance and is sold in large quantities. The description of this new species restricted to A. religiosa forests has implications for its conservation since its habitat is endangered.
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advances in the phylogeny of Helvella fungi ascomycota inferred from nuclear ribosomal lsu sequences and morphological data
Revista Mexicana De Biodiversidad, 2015Co-Authors: Fidel Landeros, Teresa Iturriaga, Aaron Rodriguez, Georgina Vargasamado, Laura GuzmandavalosAbstract:Phylogenetic relationships in the genus Helvella were investigated using both LSU rDNA sequences and morphological features. The latter were coded and included in the analyses, resulting in better-supported clades. Helvella is monophyletic and Wynnella is its sister genus. Aporhynchous vs. pleurorhynchous asci are the synapomorphies for the 2 subgenera, Leucomelaenae and Helvella, which were confirmed as natural groups. Other recovered supported clades were section Leucomelaenae in the subgenus Leucomelaenae, and sections Elasticae, Helvella, and Lacunosae within the subgenus Helvella. Generic description, comments on taxonomically informative features, species complexes, and species that need typification are presented.
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registros nuevos del genero Helvella fungi ascomycota para costa rica
Revista mexicana de micología, 2014Co-Authors: Fidel Landeros, Julieta Carranza, Laura GuzmandavalosAbstract:En el presente trabajo se dan a conocer cinco registros nuevos de Helvella para Costa Rica: H. fibrosa, H. lactea, H. pezizoides, H. solitaria y H. sulcata. Con estos, se incrementa a 12 el numero de especies de Helvella reconocidas para este pais. Se incluyen comentarios taxonomicos para estas cinco especies y una clave dicotomica para las 12 que se conocen de Costa Rica
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the Helvella lacunosa species complex in western north america cryptic species misapplied names and parasites
Mycologia, 2013Co-Authors: Nhu H Nguyen, Fidel Landeros, Roberto Garibayorijel, Karen Hansen, Else C VellingaAbstract:Based on morphology, fungal species have been considered widespread and as a result names of species from Europe or eastern North America were applied to species in western North America. Howev- er, DNA sequences have shown that many western taxa are different from their European counterparts; one such case is presented here. Comparisons of ITS and LSU rDNA sequences from ectomycorrhizal root tips and ascomata of specimens identified as Helvella lacunosa from North America, Europe and Asia revealed that the taxa from western North America and Mexico formed a well supported clade different from the eastern North American, European and Asian taxa. Within this western North American clade there are at least four taxa. Here we describe two of these western taxa as new species: Helvella vespertina and Helvella dryophila. Helvella vespertina is a bigger version of H. lacunosa, is variable in hymenial color and shape and forms ectomycorrhizae with conifers; it fruits typically Oct-Jan. Helvella dryophila is charac- terized by a dark almost black, squat pileus, a light stipe when young, medium size and forms ectomycor- rhizae with Quercus species; it fruits Jan-Jun. Due to insufficient material, the two other Helvella taxa are discussed but not formally described here. We also examined the Hypomyces and other mycoparasites associated with the ascomata of Helvella species and discuss misleadingly labeled sequences in public databases.
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revision del genero Helvella ascomycota fungi en mexico
Revista Mexicana De Biodiversidad, 2013Co-Authors: Fidel Landeros, Laura GuzmandavalosAbstract:Se presenta una revision taxonomica de las especies de Helvella citadas para Mexico. De las 29 especies y 1 variedad previamente citadas para el pais, se corroboro la presencia de 18 especies, las otras 11 y la variedad son dudosas o no corresponden con el taxon al cual fueron catalogadas. Se registra por primera vez para la micobiota mexicana a H. compressa, por lo cual se reconocen 19 especies de Helvella para Mexico. Se incluyen comentarios taxonomicos para las especies que prosperan en Mexico, asi como algunas observaciones para las que no se desarrollan en el pais. Se presenta una clave dicotomica para las especies que crecen en Mexico y algunas afines.
Else C Vellinga - One of the best experts on this subject based on the ideXlab platform.
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the Helvella lacunosa species complex in western north america cryptic species misapplied names and parasites
Mycologia, 2013Co-Authors: Nhu H Nguyen, Fidel Landeros, Roberto Garibayorijel, Karen Hansen, Else C VellingaAbstract:Based on morphology, fungal species have been considered widespread and as a result names of species from Europe or eastern North America were applied to species in western North America. Howev- er, DNA sequences have shown that many western taxa are different from their European counterparts; one such case is presented here. Comparisons of ITS and LSU rDNA sequences from ectomycorrhizal root tips and ascomata of specimens identified as Helvella lacunosa from North America, Europe and Asia revealed that the taxa from western North America and Mexico formed a well supported clade different from the eastern North American, European and Asian taxa. Within this western North American clade there are at least four taxa. Here we describe two of these western taxa as new species: Helvella vespertina and Helvella dryophila. Helvella vespertina is a bigger version of H. lacunosa, is variable in hymenial color and shape and forms ectomycorrhizae with conifers; it fruits typically Oct-Jan. Helvella dryophila is charac- terized by a dark almost black, squat pileus, a light stipe when young, medium size and forms ectomycor- rhizae with Quercus species; it fruits Jan-Jun. Due to insufficient material, the two other Helvella taxa are discussed but not formally described here. We also examined the Hypomyces and other mycoparasites associated with the ascomata of Helvella species and discuss misleadingly labeled sequences in public databases.
Laura Guzmandavalos - One of the best experts on this subject based on the ideXlab platform.
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Helvella jocatoi sp nov pezizales ascomycota a new species from h lacunosa complex with cultural importance in central mexico abies religiosa forests
Phytotaxa, 2021Co-Authors: Fidel Landeros, Felipe M Ferruscarico, Laura Guzmandavalos, Edgardo Ulises Esquivelnaranjo, Noemi Matiasferrer, Cristina Burrolaaguilar, Gala Artemisa Viurcosmartinez, Roberto GaribayorijelAbstract:Helvella lacunosa is a species complex, with Helvella lacunosa s.s. not currently distributed in America. The objective of this study was to resolve the taxonomy of specimens from central Mexico identified as Helvella lacunosa s.l. associated with Abies religiosa forests. The nuclear ITS and LSU regions were PCR-amplified and sequenced from dry herbaria specimens. Phylogenetic analyses were based on Parsimony, Maximum Likelihood and Bayesian Inference approaches. Sequences of Helvella from A. religiosa forests grouped into a well-supported lineage within the North American clade together with Helvella dryophila (associated with Quercus in western USA) and Helvella vespertina (associated with conifer forests in western USA). Therefore, we describe and illustrate Helvella jocatoi as a new species based on phylogeny and morphological traits. In central Mexico, this taxon is an edible mushroom known as “gachupin”, has high cultural importance and is sold in large quantities. The description of this new species restricted to A. religiosa forests has implications for its conservation since its habitat is endangered.
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advances in the phylogeny of Helvella fungi ascomycota inferred from nuclear ribosomal lsu sequences and morphological data
Revista Mexicana De Biodiversidad, 2015Co-Authors: Fidel Landeros, Teresa Iturriaga, Aaron Rodriguez, Georgina Vargasamado, Laura GuzmandavalosAbstract:Phylogenetic relationships in the genus Helvella were investigated using both LSU rDNA sequences and morphological features. The latter were coded and included in the analyses, resulting in better-supported clades. Helvella is monophyletic and Wynnella is its sister genus. Aporhynchous vs. pleurorhynchous asci are the synapomorphies for the 2 subgenera, Leucomelaenae and Helvella, which were confirmed as natural groups. Other recovered supported clades were section Leucomelaenae in the subgenus Leucomelaenae, and sections Elasticae, Helvella, and Lacunosae within the subgenus Helvella. Generic description, comments on taxonomically informative features, species complexes, and species that need typification are presented.
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registros nuevos del genero Helvella fungi ascomycota para costa rica
Revista mexicana de micología, 2014Co-Authors: Fidel Landeros, Julieta Carranza, Laura GuzmandavalosAbstract:En el presente trabajo se dan a conocer cinco registros nuevos de Helvella para Costa Rica: H. fibrosa, H. lactea, H. pezizoides, H. solitaria y H. sulcata. Con estos, se incrementa a 12 el numero de especies de Helvella reconocidas para este pais. Se incluyen comentarios taxonomicos para estas cinco especies y una clave dicotomica para las 12 que se conocen de Costa Rica
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revision del genero Helvella ascomycota fungi en mexico
Revista Mexicana De Biodiversidad, 2013Co-Authors: Fidel Landeros, Laura GuzmandavalosAbstract:Se presenta una revision taxonomica de las especies de Helvella citadas para Mexico. De las 29 especies y 1 variedad previamente citadas para el pais, se corroboro la presencia de 18 especies, las otras 11 y la variedad son dudosas o no corresponden con el taxon al cual fueron catalogadas. Se registra por primera vez para la micobiota mexicana a H. compressa, por lo cual se reconocen 19 especies de Helvella para Mexico. Se incluyen comentarios taxonomicos para las especies que prosperan en Mexico, asi como algunas observaciones para las que no se desarrollan en el pais. Se presenta una clave dicotomica para las especies que crecen en Mexico y algunas afines.
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revision del genero Helvella ascomycota fungi en mexico revision of the genus Helvella ascomycota fungi in mexico
2013Co-Authors: Fidel Landeros, Laura GuzmandavalosAbstract:A taxonomic revision of Helvella species cited for Mexico is presented. Of the 29 species and 1 variety previously cited for the country, we confirmed the presence of 18 species, the other 11 and the variety are doubtful or do not correspond to the taxon to which they were cataloged. Helvella compressa is reported for the first time for Mexican mycobiota, therefore we recognize 19 species of Helvella to Mexico. Taxonomic comments for species that thrive in Mexico are included, as well as some observations for some still not yet found in the country. A key to the species that grow in Mexico and some related is presented.
Trond Schumacher - One of the best experts on this subject based on the ideXlab platform.
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the Helvella corium species aggregate in nordic countries phylogeny and species delimitation
Fungal systematics and evolution, 2020Co-Authors: Solveig Bua Loken, Inger Skrede, Trond SchumacherAbstract:Mycologists have always been curious about the elaborate morphotypes and shapes of species of the genus Helvella. The small, black, cupulate Helvella specimens have mostly been assigned to Helvella corium, a broadly defined morpho-species. Recent phylogenetic analyses, however, have revealed an aggregate of species hidden under this name. We performed a multispecies coalescent analysis to re-assess species limits and evolutionary relationships of the Helvella corium species aggregate in the Nordic countries. To achieve this, we used morphology and phylogenetic evidence from five loci - heat shock protein 90 (hsp), translation elongation factor 1-alpha (tef), RNA polymerase II (rpb2), and the 5.8S and large subunit (LSU) of the nuclear ribosomal DNA. All specimens under the name Helvella corium in the larger university fungaria of Norway, Sweden and Denmark were examined and barcoded, using partial hsp and/or rpb2 as the preferential secondary barcodes in Helvella. Additional fresh specimens were collected in three years (2015-2018) to obtain in vivo morphological data to aid in species discrimination. The H. corium species aggregate consists of seven phylogenetically distinct species, nested in three divergent lineages, i.e. H. corium, H. alpina and H. pseudoalpina sp. nov. in the /alpina-corium lineage, H. alpestris, H. macrosperma and H. nannfeldtii in the /alpestris-nannfeldtii lineage, and H. alpicola as a weakly supported sister to the /alpestris-nannfeldtii lineage. Among the seven species, the ribosomal loci expressed substantial variation in evolutionary rates, suggesting care in the use of these regions alone in delimitation of Helvella species. Altogether, 469 out of 496 available fungarium specimens were successfully barcoded.
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the genera Helvella and dissingia ascomycota pezizomycetes in europe notes on species from spain
Fungal systematics and evolution, 2020Co-Authors: Inger Skrede, Ballester L Gonzalvo, C Mathiesen, Trond SchumacherAbstract:Phylogenetic analyses of 115 newly collected Helvella specimens from Spain using three genetic markers [heat shock protein 90 (hsp), RNA polymerase II second largest subunit (rpb2) and the nuclear large subunit ribosomal DNA (LSU)] confirm the assignment of the Spanish collections to one Dissingia and 30 Helvella species. The analyses were supplemented with an additional sample of 65 Spanish and extralimital Helvella specimens from the fungaria of Oslo (O), Trondheim (TRH), Copenhagen (C), Uppsala (UPS), Stockholm (S) and Venice (MCVE). Nine species are described as new, i.e. Helvella fuscolacunosa, H. hispanica, H. iberica, H. inexpectata, H. neopallescens, H. phlebophoroides, H. poculiformis, H. retinervis, and H. terricola. We present photographs of a selection of fresh specimens and provide descriptions of all species of this diverse South European Mediterranean element of the genera in Europe.
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a synopsis of the saddle fungi Helvella ascomycota in europe species delimitation taxonomy and typification
Persoonia, 2017Co-Authors: Inger Skrede, Tor Carlsen, Trond SchumacherAbstract:Helvella is a widespread, speciose genus of large apothecial ascomycetes (Pezizomycete: Pezizales) that are found in terrestrial biomes of the Northern and Southern Hemispheres. This study represents a beginning on assessing species limits and applying correct names for Helvella species based on type material and specimens in the university herbaria (fungaria) of Copenhagen (C), Harvard (FH) and Oslo (O). We use morphology and phylogenetic evidence from four loci – heat shock protein 90 (hsp), translation elongation factor alpha (tef), RNA polymerase II (rpb2) and the nuclear large subunit ribosomal DNA (LSU) – to assess species boundaries in an expanded sample of Helvella specimens from Europe. We combine the morphological and phylogenetic information from 55 Helvella species from Europe with a small sample of Helvella species from other regions of the world. Little intraspecific variation was detected within the species using these molecular markers; hsp and rpb2 markers provided useful barcodes for species delimitation in this genus, while LSU provided more variable resolution among the pertinent species. We discuss typification issues and identify molecular characteristics for 55 European Helvella species, designate neo- and epitypes for 30 species, and describe seven Helvella species new to science, i.e., H. alpicola, H. alpina, H. carnosa, H. danica, H. nannfeldtii, H. pubescens and H. scyphoides.
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pindara a miniature Helvella
Mycologia, 1999Co-Authors: Sara Landvik, Roy Kristiansen, Trond SchumacherAbstract:.... . .. ... ..... ... . . .. .. ... . .. .. .. .. ... ..... .. . .. ... ..... .. . ... .. ... . .... .. ... . ... . ... ... ... . .... .. . . . .. .... . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Karen Hansen - One of the best experts on this subject based on the ideXlab platform.
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the Helvella lacunosa species complex in western north america cryptic species misapplied names and parasites
Mycologia, 2013Co-Authors: Nhu H Nguyen, Fidel Landeros, Roberto Garibayorijel, Karen Hansen, Else C VellingaAbstract:Based on morphology, fungal species have been considered widespread and as a result names of species from Europe or eastern North America were applied to species in western North America. Howev- er, DNA sequences have shown that many western taxa are different from their European counterparts; one such case is presented here. Comparisons of ITS and LSU rDNA sequences from ectomycorrhizal root tips and ascomata of specimens identified as Helvella lacunosa from North America, Europe and Asia revealed that the taxa from western North America and Mexico formed a well supported clade different from the eastern North American, European and Asian taxa. Within this western North American clade there are at least four taxa. Here we describe two of these western taxa as new species: Helvella vespertina and Helvella dryophila. Helvella vespertina is a bigger version of H. lacunosa, is variable in hymenial color and shape and forms ectomycorrhizae with conifers; it fruits typically Oct-Jan. Helvella dryophila is charac- terized by a dark almost black, squat pileus, a light stipe when young, medium size and forms ectomycor- rhizae with Quercus species; it fruits Jan-Jun. Due to insufficient material, the two other Helvella taxa are discussed but not formally described here. We also examined the Hypomyces and other mycoparasites associated with the ascomata of Helvella species and discuss misleadingly labeled sequences in public databases.
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molecular and morphological diversity of pezizalean ectomycorrhiza
New Phytologist, 2006Co-Authors: Leho Tedersoo, Karen Hansen, Brian A Perry, Rasmus KjollerAbstract:Summary • A growing body of molecular research is discovering a high diversity of pezizalean ectomycorrhiza (EcM), yet most remain unidentified at the genus or species level. This study describes EcM-forming taxa within the Pezizales. • EcM-forming Pezizales were revealed by morphotyping and sequencing of EcM root tips from forests in Estonia and Denmark. The taxa on EcM root tips were identified using phylogenetic analyses of large-subunit rDNA sequences derived from sporocarps of 301 pezizalean species, and comparisons with internal transcribed spacer rDNA sequences. • Thirty-three species are suggested as EcM symbionts, representing all three major clades of Pezizales, the genera Genea, Geopora, Humaria, Tarzetta, Trichophaea, Wilcoxina, Helvella, Hydnotrya, Tuber, Pachyphloeus, Peziza and Sarcosphaera, and two Pezizaceae anamorphs. EcM of Pezizales species are easily distinguished by their anatomy, particularly thick cell walls and stout hyphae. • This study demonstrates that Pezizales species constitute a considerable proportion of the mycobionts in EcM fungal communities in mature boreal deciduous and coniferous forests, in several soil types. Fruit-body sequences and EcM descriptions will facilitate identification of pezizalean EcM in future studies.