Τίτλος:
A reappraisal of the Pleurotus eryngii complex - New species and taxonomic combinations based on the application of a polyphasic approach, and an identification key to Pleurotus taxa associated with Apiaceae plants
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The Pleurotus eryngii species-complex comprises choice edible mushrooms growing on roots and lower stem residues of Apiaceae (umbellifers) plants. Material deriving from extensive sampling was studied by mating compatibility, morphological and ecological criteria, and through analysis of ITS1-5.8S-ITS2 and IGS1 rRNA sequences. Results revealed that P. eryngii sensu stricto forms a diverse and widely distributed aggregate composed of varieties elaeoselini, eryngii, ferulae, thapsiae, and tingitanus. Pleurotuseryngii subsp. tuoliensis comb. nov. is a phylogenetically sister group to the former growing only on various Ferula species in Asia. The existence of Pleurotusnebrodensis outside of Sicily (i.e., in Greece) is reported for the first time on the basis of molecular data, while P. nebrodensis subsp. fossulatus comb. nov. is a related Asiatic taxon associated with the same plant (Prangos ferulacea). Last, Pleurotusferulaginis sp. nov. grows on Ferulago campestris in northeast Italy, Slovenia and Hungary; it occupies a distinct phylogenetic position accompanied with significant differences in spore size and mating incompatibility versus other Pleurotus populations. Coevolution with umbellifers and host/substrate specificity seem to play key roles in speciation processes within this fungal group. An identification key to the nine Pleurotus taxa growing in association with Apiaceae plants is provided. © 2014 The British Mycological Society.
Συγγραφείς:
Zervakis, G.I.
Ntougias, S.
Gargano, M.L.
Besi, M.I.
Polemis, E.
Typas, M.A.
Venturella, G.
Περιοδικό:
Fungal Biology
Λέξεις-κλειδιά:
coevolution; genetic marker; geographical distribution; identification key; morphology; mushroom; new species; phylogenetics; phylogeny; speciation (biology); taxonomy, Hungary; Italy; Sicily; Slovenia, Apiaceae; Basidiomycota; Ferula; Ferulago; Fungi; Pleurotus; Pleurotus eryngii; Pleurotus nebrodensis; Prangos, fungal DNA; ribosomal spacer DNA; RNA 5.8S, Apiaceae; biodiversity; chemistry; classification; cluster analysis; DNA sequence; genetic recombination; genetics; growth, development and aging; isolation and purification; microbiology; microscopy; molecular genetics; phylogeography; Pleurotus, Apiaceae; Biodiversity; Cluster Analysis; DNA, Fungal; DNA, Ribosomal Spacer; Microscopy; Molecular Sequence Data; Phylogeography; Pleurotus; Recombination, Genetic; RNA, Ribosomal, 5.8S; Sequence Analysis, DNA
DOI:
10.1016/j.funbio.2014.07.001
