A common new species of Inocybe in the Pacific Northwest with a diagnostic PDAB reaction

Handle URI:
http://hdl.handle.net/10754/554386
Title:
A common new species of Inocybe in the Pacific Northwest with a diagnostic PDAB reaction
Authors:
Matheny, P. B.; Norvell, L. L.; Giles, E.C.
Abstract:
A species of Inocybe common in Washington, Oregon and British Columbia is documented and described as new. The species, I. chondroderma, is characterized by these features: pileus with a fulvous disk and ochraceous to chamois margin, presence of a cortina, densely mycelioid stipe base, smooth spores and fall phenology. The most reliable and distinctive feature of the species is a blue-green or turquoise reaction in response to application of a solution of p-dimethylaminobenzaldehyde (PDAB), indicating the presence of what is most likely an indole alkaloid. PDAB use provides a quick and diagnostic character easily implemented in a laboratory setting. ITS sequences from recent collections of I. chondroderma and from materials collected in the 1940s in Washington and Oregon fully match numerous mislabeled sequences from specimens in British Columbia and Oregon. The species is most closely related to an unclarified taxon from Colorado and Japan (I. cf. chondroderma) and a rare European species, I. subnudipes. Nine different species names in Inocybe and one in Hebeloma attributed to I. chondroderma based on GenBank BLASTN searches of the ITS locus match with 99–100% similarity, reinforcing concerns about taxonomic inaccuracies in public DNA sequence databases. A complete morphological description, illustrations and phylogenetic assessment are provided.
KAUST Department:
Marine Science Program
Citation:
A common new species of Inocybe in the Pacific Northwest with a diagnostic PDAB reaction 2012, 105 (2):436 Mycologia
Publisher:
Mycological Society of America
Journal:
Mycologia
Issue Date:
6-Sep-2012
DOI:
10.3852/12-155
Type:
Article
ISSN:
0027-5514; 1557-2536
Additional Links:
http://www.mycologia.org/cgi/doi/10.3852/12-155
Appears in Collections:
Articles; Marine Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMatheny, P. B.en
dc.contributor.authorNorvell, L. L.en
dc.contributor.authorGiles, E.C.en
dc.date.accessioned2015-05-21T07:05:35Zen
dc.date.available2015-05-21T07:05:35Zen
dc.date.issued2012-09-06en
dc.identifier.citationA common new species of Inocybe in the Pacific Northwest with a diagnostic PDAB reaction 2012, 105 (2):436 Mycologiaen
dc.identifier.issn0027-5514en
dc.identifier.issn1557-2536en
dc.identifier.doi10.3852/12-155en
dc.identifier.urihttp://hdl.handle.net/10754/554386en
dc.description.abstractA species of Inocybe common in Washington, Oregon and British Columbia is documented and described as new. The species, I. chondroderma, is characterized by these features: pileus with a fulvous disk and ochraceous to chamois margin, presence of a cortina, densely mycelioid stipe base, smooth spores and fall phenology. The most reliable and distinctive feature of the species is a blue-green or turquoise reaction in response to application of a solution of p-dimethylaminobenzaldehyde (PDAB), indicating the presence of what is most likely an indole alkaloid. PDAB use provides a quick and diagnostic character easily implemented in a laboratory setting. ITS sequences from recent collections of I. chondroderma and from materials collected in the 1940s in Washington and Oregon fully match numerous mislabeled sequences from specimens in British Columbia and Oregon. The species is most closely related to an unclarified taxon from Colorado and Japan (I. cf. chondroderma) and a rare European species, I. subnudipes. Nine different species names in Inocybe and one in Hebeloma attributed to I. chondroderma based on GenBank BLASTN searches of the ITS locus match with 99–100% similarity, reinforcing concerns about taxonomic inaccuracies in public DNA sequence databases. A complete morphological description, illustrations and phylogenetic assessment are provided.en
dc.publisherMycological Society of Americaen
dc.relation.urlhttp://www.mycologia.org/cgi/doi/10.3852/12-155en
dc.rightsArchived with thanks to Mycologia © 2013 by The Mycological Society of Americaen
dc.subjectAgaricalesen
dc.subjectbarcodingen
dc.subjectherbariumen
dc.subjectindole alkaloiden
dc.subjectp-dimethylaminobenzaldehydeen
dc.subjectphylogenetic taxonomyen
dc.titleA common new species of Inocybe in the Pacific Northwest with a diagnostic PDAB reactionen
dc.typeArticleen
dc.contributor.departmentMarine Science Programen
dc.identifier.journalMycologiaen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee 37996-1610en
dc.contributor.institutionPacific Northwest Mycology Service, 6720 NW Skyline Boulevard, Portland, Oregon 97229-1309en
dc.contributor.institutionDepartment of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee 37996-1610en
kaust.authorGiles, E. C.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.