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Use of Randomly Amplified Polymorphic Dna Markers as a Tool to Study Variation in Lichen-Forming Fungi

Published online by Cambridge University Press:  28 March 2007

G. J. Murtagh ,
P. S. Dyer ,
P. C. McClure  and
P. D. Crittenden
G. J. Murtagh
Affiliation:
School of Biological Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
P. S. Dyer*
Affiliation:
School of Biological Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
P. C. McClure
Affiliation:
School of Biological Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
P. D. Crittenden
Affiliation:
School of Biological Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
*
‡Corresponding author.
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Abstract

A protocol is described to enable the production of reliable genetic fingerprints of lichen-forming fungi using randomly amplified polymorphic DNA (RAPD) markers. Key features of the method are the use of mycobiont DNA extracted from axenic cultures by a phenol-chloroform procedure, and PCR amplification using DyNAzyme II DNA polymerase. RAPD-PCR fingerprints of Graphis scripta, G. elegans and Phacographis dendritica were successfully generated using this protocol and individual isolates could be identified on the basis of differences in banding patterns produced. DNA extracted from whole thalli of G. scripia was also subjected to RAPD-PCR but the fingerprints produced differed from those given by axenic cultures of the mycobiont. Therefore difficulties of interpretation may arise when whole thalli are used in RAPD analysis.

Type
Research Article
Information
The Lichenologist , Volume 31 , Issue 3 , May 1999 , pp. 257 - 267
Copyright
Copyright © British Lichen Society 1999

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