This Article Full Text Full Text (PDF) Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Luangsa-ard, J. J. Articles by Samson, R. A. Search for Related Content PubMed Articles by Luangsa-ard, J. J. Articles by Samson, R. A. Agricola Articles by Luangsa-ard, J. J. Articles by Samson, R. A.

The polyphyletic nature of Paecilomyces sensu lato based on 18S-generated rDNA phylogeny

     BIOTEC, NSTDA Science Park, 113 Paholyothin Road, Khlong 1, Khlong Luang, Pathum Thani, Thailand

Robert A. Samson ¹

     Centraalbureau voor Schimmelcultures, P.O. Box 85167, NL-3508 AD Utrecht, The Netherlands

Nuclear-encoded small-subunit ribosomal DNA was used to examine phylogenetic relationships in Paecilomyces sensu lato. Phylogenetic analysis of the 18S nr DNA demonstrates that Paecilomyces is polyphyletic across two subclasses, Sordariomycetidae and Eurotiomycetidae. The type species, Paecilomyces variotii, and thermophilic relatives belong in the order Eurotiales (Trichocomaceae), while mesophilic species related to Paecilomyces farinosus are in the order Hypocreales (Clavicipitaceae and Hypocreaceae). One species, Paecilomyces inflatus, had affinities for the order Sordariales. Within the Eurotiales, Paecilomyces is monophyletic. Within the Hypocreales, species of Paecilomyces are polyphyletic, although the data failed to fully resolve these relationships.

Key words: 18S rDNA, anamorph-teleomorph connections, Clavicipitaceae, Hypocreaceae, Paecilomyces, phylogenetics, Trichocomaceae

This article has been cited by other articles:

				J. Houbraken, J. Varga, E. Rico-Munoz, S. Johnson, and R. A. Samson Sexual Reproduction as the Cause of Heat Resistance in the Food Spoilage Fungus Byssochlamys spectabilis (Anamorph Paecilomyces variotii) Appl. Envir. Microbiol., March 1, 2008; 74(5): 1613 - 1619. [Abstract] [Full Text] [PDF]

				G.-H. Sung, N. L. Hywel-Jones, J.-M. Sung, J. J. Luangsa-ard, B. Shrestha, and J. W. Spatafora Phylogenetic classification of Cordyceps and the clavicipitaceous fungi. Stud Mycol, January 1, 2007; 57: 5 - 59. [Abstract] [Full Text] [PDF]