Reconstructing the evolution of agarics from nuclear gene sequences and basidiospore ultrastructure.

Reconstructing the evolution of agarics from nuclear gene sequences and basidiospore ultrastructure. Research Abstract Details 

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Reconstructing the evolution of agarics from nuclear gene sequences and basidiospore ultrastructure. Abstract Text:

Sigisfredo Garnica,Michael Weiss,Grit Walther,Franz Oberwinkler,Sigisfredo Garnica,Michael Weiss,Grit Walther,Franz Oberwinkler,

Traditional classifications of agaric fungi involve gross morphology of their fruit bodies and meiospore print-colour. However, the phylogeny of these fungi and the evolution of their morphological and ecological traits are poorly understood. Phylogenetic analyses have already demonstrated that characters used in traditional classifications of basidiomycetes may be heavily affected by homoplasy, and that non-gilled taxa evolved within the agarics several times. By integrating molecular phylogenetic analyses including domains D1-D3 and D7-D8 of nucLSU rDNA and domains A-C of the RPB1 gene with morphological and chemical data from representative species of 88 genera, we were able to resolve higher groups of agarics. We found that the species with thick-walled and pigmented basidiospores constitute a derived group, and hypothesize that this specific combination of characters represents an evolutionary advantage by increasing the tolerance of the basidiospores to dehydration and solar radiation and so opened up new ecological niches, e.g. the colonization of dung substrates by enabling basidiospores to survive gut passages through herbivores. Our results confirm the validity of basidiospore morphology as a phylogenetic marker in the agarics.

Reconstructing the evolution of agarics from nuclear gene sequences and basidiospore ultrastructure. Publishing Authors By Initials

S Garnica,M Weiss,G Walther,F Oberwinkler,S Garnica,M Weiss,G Walther,F Oberwinkler,

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Reconstructing the evolution of agarics from nuclear gene sequences and basidiospore ultrastructure. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Mycological research

VOLUME: 111

Page Numbers: 1019-29

Journal Abbreviation: Mycol. Res.

ISSN: 0953-7562

DAY: 6

MONTH: 04

YEAR: 2007

Reconstructing the evolution of agarics from nuclear gene sequences and basidiospore ultrastructure. Information

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LANGUAGE: eng

NlmUniqueID: 8913481

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AFFILIATION: Eberhard-Karls-Universität Tübingen, Botanisches Institut, Lehrstuhl für Spezielle Botanik und Mykologie, Auf der Morgenstelle 1, D-72076 Tübingen, Germany.

Country: England

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MEDLINETA: Mycol Res

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