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Halıcı, M. G./ M. Kocakaya/ K. Sweeney/ J. D. Fankhauser/ I. Schmitt 2010: Pertusaria paramerae (Pertusariales, Ascomycota), a species with variable secondary chemistry, and a new lichen record for Turkey. - Nova Hedwigia 91(1-2): 223-230. [RLL List # 226 / Rec.# 33777]
Keywords: Chemosyndromic variation/ HPLC/ Lichen compounds/ Lichenized fungi/ Molecular phylogeny/ mtSSU rDNA
Abstract: We report a new chemotype of the crustose lichen Pertusaria paramerae A.Crespo & V?zda from a specimen collected in Turkey. Mitochondrial small subunit rDNA (mtSSU) sequences of P. paramerae collections from Spain, the country of the species' original description, and a specimen from Turkey are 100% identical. We present a phylogeny based on mtSSU rDNA that confirms the placement of Pertusaria paramerae in the Pertusaria s.str. group. HPLC analyses suggest the presence of 2'-O-methylperlatolic acid (major), thiophaninic acid (minor), and 2,4-dichloronorlichexanthone (trace) in the specimen collected in Turkey, and planaic acid (major), thiophaninic acid (minor), atranorin (trace), and an unidentified compound (trace) in a specimen collected in Spain. We propose that replacement of planaic acid by the structurally similar 2'-O-methylperlatolic acid and presence or absence of trace compounds are chemosyndromic variations that do not warrant recognition of a new species. We provide illustrations of morphological and micromorphological characters of P. paramerae. © 2010 J. Cramer in Gebr. Borntraeger Verlagsbuchhandlung, Stuttgart, Germany.
URL: http://dx.doi.org/10.1127/0029-5035/2010/0091-0223
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