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Please use this identifier to cite or link to this item: http://hdl.handle.net/1993/2785

Title: The nuclear small subunit ribosomal genes of Sphaeronaemella helvellae, Sphaeronaemella fimicola, Gabarnaudia betae, and Cornuvesica falcata: phylogenetic implications
Authors: Hausner, G
Reid, J
Keywords: Cornuvesica
Gabarnaudia
Gondwanamyces
Sphaeronaemalla fragariae
ophiostomatoid fungi
ribosomal DNA
DNA-SEQUENCES
CERATOCYSTIOPSIS-FALCATA
PROTEA INFRUCTESCENCES
OPHIOSTOMATOID FUNGI
COPROPHILOUS FUNGI
GENUS
SUBSTITUTIONS
REPRODUCTION
STIMULATION
REAPPRAISAL
Issue Date: 16-Jun-2004
Citation: 0008-4026; CAN J BOT, JUN 2004, vol. 82, no. 6, p.752 to 762.
Abstract: Sequences were obtained from the nuclear small subunit ribosomal RNA genes for representatives of four ophiostomatoid genera (Ceratocystis, Gondwanamyces, Cornuvesica, and Sphaeronaemella) to resolve their phylogenetic position within the Ascomycota. Phylogenetic analysis suggests that these genera are monophyletic and share common ancestry with members of the Microascales. Based on sequence data, strains representing the mitotic species Gabarnaudia betae (Delacr.) Samson & W. Gams were shown clearly to be derived from Sphaeronaemella species. Sequences were also obtained from strains representing the syntype of Sphaeronaemella fragariae, the exholotype of Sphaeronaemella humicola, and the extype of Gabarnaudia tholispora. The results suggest that putative extype cultures for S. humicola and G. tholispora no longer represent the original material deposited. Our data also support the exclusion of S. fragariae from Sphaeronaemella.
URI: http://hdl.handle.net/1993/2785
DOI: http://dx.doi.org/10.1139/b04-046
Appears in Collection(s):Research Publications (UofM Student, Faculty and Staff only access)

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