Universität zu Köln

Kretzschmar, Martin, Kuhnt, Andreas, Bonkowski, Michael and Fiore-Donno, Anna Maria ORCID: 0000-0001-6265-1907 (2016). Phylogeny of the Highly Divergent Echinosteliales (Amoebozoa). J. Eukaryot. Microbiol., 63 (4). S. 453 - 460. HOBOKEN: WILEY. ISSN 1550-7408

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Abstract

Myxomycetes or plasmodial slime molds are widespread and very common soil amoebae with the ability to form macroscopic fruiting bodies. Even if their phylogenetic position as a monophyletic group in Amoebozoa is well established, their internal relationships are still not entirely resolved. At the base of the most intensively studied dark-spored clade lies the order Echinosteliales, whose highly divergent small subunit ribosomal (18S) RNA genes represent a challenge for phylogenetic reconstructions. This is because they are characterized by unusually long variable helices of unknown secondary structure and a high inter-and infraspecific divergence. Current classification recognizes two families: the monogeneric Echinosteliaceae and the Clastodermataceae with the genera Barbeyella and Clastoderma. To better resolve the phylogeny of the Echinosteliales, we obtained three new small subunit ribosomal (18S) RNA gene sequences of Clastoderma and Echinostelium corynophorum. Our phylogenetic analyses suggested the polyphyly of the family Clastodermataceae, as Barbeyella was more closely related to Echinostelium arboreum than to Clastoderma, while Clastoderma debaryanum was the earliest branching clade in Echinosteliales. We also found that E. corynophorum was the closest relative of the enigmatic Semimorula liquescens, a stalkless-modified Echinosteliales. We discuss possible evolutionary pathways in dark-spored Myxomycetes and propose a taxonomic update.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kretzschmar, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuhnt, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED Bonkowski, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Fiore-Donno, Anna Maria UNSPECIFIED orcid.org/0000-0001-6265-1907 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-270819
DOI:	10.1111/jeu.12289
Journal or Publication Title:	J. Eukaryot. Microbiol.
Volume:	63
Number:	4
Page Range:	S. 453 - 460
Date:	2016
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1550-7408
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SLIME-MOLDS; MYXOMYCETE; DIVERSITY; EVOLUTION; GENUS; SEMIMORULA Multiple languages Microbiology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27081