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Pyrigemmula, a novel hyphomycete genus on grapevine and tree bark

Magyar, Donat and Shoemaker, R. A. and Bobvos, Janos and Crous, P.W. and Groenewald, J.Z. (2011) Pyrigemmula, a novel hyphomycete genus on grapevine and tree bark. Mycological Progress, 10, 307-314. ISSN 1617-416X.

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The anamorphic taxon Pyrigemmula aurantiaca gen. et sp. nov. is described and illustrated from specimens that were collected from the inner bark of living woody hosts (Vitis vinifera, Pyrus communis, Mespilus germanica, Platanus hybrida, Elaeagnus angustifolia) and plant debris in Hungary. The fungus is generically distinct in the nature of the pyriform, golden conidiogenous cell with a solitary terminal pore and the ellipsoidal, distoseptate, phragmoconidia that germinate from each end and that have a rarely noted internal hilum quite unlike the hilum of the conidiogenous cell. The new fungus is compared with the type species of a number of allied genera of hyphomycetes. Free spores of the fungus were trapped in air, honeydew sap and rainwater samples. Aerobiological studies showed that the spores are infrequent in the air, whereas their concentration increased with higher atmospheric pressure. Pyrigemmula aurantiaca lives in bark fissures and rarely becomes airborne and the spores are mainly dispersed by rain splash.

Item Type:Article
Institutes:Centraalbureau voor Schimmelcultures (CBS)
ID Code:12790
Deposited On:23 Nov 2012 12:24
Last Modified:23 Nov 2012 12:30

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