Evidence for a new lineage of primary ambrosia fungi in Geosmithia Pitt (Ascomycota: Hypocreales)

0351222 - MBÚ 2011 RIV GB eng J - Journal Article
Kolařík, Miroslav - Kirkendall, L.
Evidence for a new lineage of primary ambrosia fungi in Geosmithia Pitt (Ascomycota: Hypocreales).
Fungal Biology. Roč. 114, č. 8 (2010), s. 676-689. ISSN 1878-6146. E-ISSN 1878-6162
Institutional research plan: CEZ:AV0Z50200510
Keywords : beta-Tubulin * Cnesinus lecontei * Eupagiocerus dentipes
Subject RIV: EE - Microbiology, Virology
Impact factor: 0.000, year: 2010

Geosmithia is a genus of mitosporic filamentous fungi typically associated with phloeophagous bark beetles world-wide. During this study, the fungal associates of ambrosia Beatles Cnesinus lecontei, Eupagiocerus dentipes, and Microcorthylus sp. from Costa Rica, were studied using morphology and DNA sequences. Fungal associates belonged to four undescribed Geosmithia species. Geosmithia eupagioceri sp. nov. and G. microcorthyli sp. nov. are evidently primary ambrosia fungi of their respective vectors E. dentipes and Microcorthylus species. They both have convergently evolved distinct morphological adaptations including the production of large, solitary and globose conidia, and yeast-like cells. Tunnels of C. lecontei contained an undescribed Geosmithia species, but its nutritional importance for its vector is unclear. An auxiliary ambrosia fungus, Geosmithia rufescens sp. nov., was found associated with both G. eupagioceri and the Geosmithia species associated with C. lecontei
Permanent Link: http://hdl.handle.net/11104/0191022