Notes on Agaricus section Duploannulati using molecular and morphological data

The position of several endemic and rare species in Agaricus sect. Duploannulati and the limits of the section were investigated by analysis of sequence data from the ribosomal DNA ITS. The results supported the recognition of two groups, which we treat as subsections Chitonioides and Duploannulati....

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Bibliographic Details
Published in:Mycological research 2005-06, Vol.109 (6), p.729-740
Main Authors: DIDUKH, Maryna, VILGALYS, Rytas, WASSER, Solomon P., ISIKHUEMHEN, Omoanghe S., NEVO, Eviatar
Format: Article
Language:English
Subjects:
Agaricus
Agaricus - classification
Agaricus - genetics
Agaricus gennadii
Agaricus nevoi
Agaricus padanus
Agaricus pequinii
Agaricus rollanii
Brazil
DNA Transposable Elements - genetics
DNA, Fungal - genetics
DNA, Ribosomal - genetics
Europe
fungal anatomy
internal transcribed spacers
Israel
Molecular Sequence Data
molecular systematics
Phylogeny
ribosomal DNA
sequence analysis
Species Specificity
United States
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Summary:The position of several endemic and rare species in Agaricus sect. Duploannulati and the limits of the section were investigated by analysis of sequence data from the ribosomal DNA ITS. The results supported the recognition of two groups, which we treat as subsections Chitonioides and Duploannulati. Most of the species studied proved to belong to subsect. Chitonioides. Species excluded from the section, as well as other potential members of sect. Duploannulati, are considered. Morphological traits deemed important for identification of A. nevoi, A. pequinii, A. gennadii, A. rollanii, and A. padanus are discussed. Taxonomic positions of these species in morphologically-based systems and according to molecular systematics data are compared and analyzed.
ISSN:0953-7562
1469-8102
DOI:10.1017/S0953756205002443