A new genus Zhurbenkoa and a novel nutritional mode revealed in the family Malmideaceae (Lecanoromycetes, Ascomycota)

Adam Flakus , Javier Etayo , Sergio Pérez-Ortega , Martin Kukwa , Zdeněk Palice , Pamela Rodriguez-Flakus

Abstract

Lichen-inhabiting fungi are highly specialized mycoparasites, commensals or rarely saprotrophs, that are common components of almost every ecosystem, where they develop obligate associations with lichens. Their relevance, however, contrasts with the relatively small number of these fungi described so far. Recent estimates and ongoing studies indicate that a significant fraction of their diversity remains undiscovered and may be expected in tropical regions, in particular in hyperdiverse fog-exposed montane forests. Here, we introduce the new genus Zhurbenkoa, from South America and Europe, for three lichenicolous fungi growing on thalli of the widespread lichen genus Cladonia (Lecanorales). Phylogenetic analyses based on combined sequence data of mt and nuc rDNA obtained from Andean populations (Bolivia) placed Zhurbenkoa as a member of Malmideaceae, a recently introduced family of lichen-forming fungi in the class Lecanoromycetes. Zhurbenkoa is closely related to the genera Savoronala and Sprucidea. The new genus is characterized by the development of grayish brown to almost black apothecia lacking an evident margin, an epihymenium interspersed with crystals (often seen as pruina), a strongly conglutinated hymenium made of noncapitate and sparsely branched paraphyses, a colorless exciple composed of radially arranged hyphae, a Lecanora/Micarea-like ascus type, and aseptate or 1-septate ellipsoidal colorless ascospores. Zhurbenkoa includes two Neotropical (Z. cladoniarum, Z. latispora) and one widespread (Z. epicladonia) species. The lichenicolous trophic mode is documented for the first time in the Malmideaceae, which until now included only lichen-forming associations between fungi and green algae.
Publication typeIn press (online first, early view)
Author Adam Flakus
Adam Flakus,,
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, Javier Etayo
Javier Etayo,,
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, Sergio Pérez-Ortega
Sergio Pérez-Ortega,,
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, Martin Kukwa (FB / DPTNC)
Martin Kukwa,,
- Department of Plant Taxonomy and Nature Conservation
, Zdeněk Palice
Zdeněk Palice,,
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, Pamela Rodriguez-Flakus
Pamela Rodriguez-Flakus,,
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Journal seriesMycologia, ISSN 0027-5514, (A 30 pkt)
Issue year2019
Noonline first
Pages1-1
Publication size in sheets0.3
Keywords in EnglishArthonia epicladonia, lichenicolous fungi, Neotropics, Pezizomycotina, phylogenetics, systematics, 4 new taxa
ASJC Classification1307 Cell Biology; 1110 Plant Science; 1311 Genetics; 1312 Molecular Biology; 1314 Physiology; 1105 Ecology, Evolution, Behavior and Systematics; 2700 General Medicine
DOIDOI:10.1080/00275514.2019.1603500
Languageen angielski
Score (nominal)30
ScoreMinisterial score = 30.0, 24-07-2019, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.307; WoS Impact Factor: 2017 = 2.762 (2) - 2017=2.833 (5)
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