Evolution in action: Molecular evidence for recent emergence of secotioid genera Endoptychum, Gyrophragmium and Longula from Agaricus ancestors

Geml, J. (2004) Evolution in action: Molecular evidence for recent emergence of secotioid genera Endoptychum, Gyrophragmium and Longula from Agaricus ancestors. Acta Microbiologica et Immunologica Hungarica, 51 (1-2). pp. 97-108. ISSN 1217-8950

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Abstract

Phylogenetic analyses of 29 Agaricus species and one representative from genera Endoptychum, Gyrophragmium and Longula each were conducted based on sequence data of the entire internal transcribed spacers and partial large subunit of ribosomal DNA. The Agaricus species formed several distinct clades both confirming and challenging previous morphological sections in several cases. Endoptychum depres­sum, Gyrophragmium dunalii and Longula texensis were nested among species of the genus Agaricus. This study provides evidence for independent emergence of these secotioid fungi from Agaricus ancestors, most likely from species placed in the section Arvenses as inferred from molecular data.

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