The nuclear small subunit ribosomal genes of Sphaeronaemella helvellae, Sphaeronaemella fimicola, Gabarnaudia betae, and Cornuvesica falcata: phylogenetic implications

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dc.contributor.author Hausner, G
dc.contributor.author Reid, J
dc.date.accessioned 2007-09-07T18:30:17Z
dc.date.available 2007-09-07T18:30:17Z
dc.date.issued 2004-06-16T18:30:17Z
dc.identifier.citation 0008-4026; CAN J BOT, JUN 2004, vol. 82, no. 6, p.752 to 762. en
dc.identifier.uri http://hdl.handle.net/1993/2785
dc.description.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 The results suggest that putative extype cultures for S. humicola and G. tholispora no longer represent the original material deposited.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. en
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dc.language.iso en_US
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dc.subject Cornuvesica en
dc.subject Gabarnaudia en
dc.subject Gondwanamyces en
dc.subject Sphaeronaemalla fragariae en
dc.subject ophiostomatoid fungi en
dc.subject ribosomal DNA en
dc.subject DNA-SEQUENCES en
dc.subject GENUS en
dc.subject SUBSTITUTIONS en
dc.subject REPRODUCTION en
dc.subject STIMULATION en
dc.subject REAPPRAISAL en
dc.title The nuclear small subunit ribosomal genes of Sphaeronaemella helvellae, Sphaeronaemella fimicola, Gabarnaudia betae, and Cornuvesica falcata: phylogenetic implications en
dc.status Peer reviewed en
dc.identifier.doi http://dx.doi.org/10.1139/b04-046

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