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Effects of Thallus Damage on Interactions of Lichens with Non-Lichenized Fungi Under Natural and Laboratory Conditions

Published online by Cambridge University Press:  28 March 2007

Marian G. Glenn
Affiliation:
Biology Department, Seton Hall University, South Orange, NJ 07079, U.S.A.
Antonio Gomez-Bolea
Affiliation:
Departament de Biologia Vegetal, Facultat de Biologia, Universitat de Barcelona, Avda. Diagonal 645, ES–08028 Barcelona, Spain.
Ernest V. Orsi
Affiliation:
Biology Department, Seton Hall University, South Orange, NJ 07079, U.S.A.

Abstract

The response of corticolous lichens to artificially induced chemical damage was compared to symptoms found on damaged lichens in the field. Experimental thalli were damaged and observed (1) in situ in a relatively pristine area, and (2) in a growth chamber either hydrated continuously or periodically. Lichenicolous fungi encountered included Cornutispora lichenicola, Lichenoconium erodens, Phoma cytospora, Vouauxiomyces truncatus, Hobsonia christiansenii, Pronectria oligospora, Nectria rubefaciens and its anamorph, Acremonium rhabdosporum, and a variety of hyphomycetes. The results support the idea that both thallus necrosis and moist conditions are necessary to produce the full suite of symptoms observed on ailing lichens in the field.

Type
Research Article
Copyright
Copyright © British Lichen Society 1997

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