Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

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Record number 559257
Title Two new species of the genus Stenamoeba (Discosea, Longamoebia) : Cytoplasmic MTOC is present in one more amoebae lineage
Author(s) Geisen, Stefan; Weinert, Jan; Kudryavtsev, Alexander; Glotova, Anna; Bonkowski, Michael; Smirnov, Alexey
Source European Journal of Protistology 50 (2014)2. - ISSN 0932-4739 - p. 153 - 165.
DOI https://doi.org/10.1016/j.ejop.2014.01.007
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) Amoebozoa - Discosea - Morphology - MTOC - Phylogeny - Ultrastructure
Abstract

Two new species of the recently described genus Stenamoeba, named S. berchidia and S. sardiniensis were isolated from a single soil sample on Sardinia, Italy. Both share morphological features characteristic to Stenamoeba and form in phylogenetic analyses together with other Stenamoeba spp. a highly supported clade within the family Thecamoebidae. The ultrastructural investigation of Stenamoeba sardiniensis revealed the presence of cytoplasmic microtubule-organizing centers (MTOCs), located close to one of several dictyosomes found inside the cell. This is the first report of cytoplasmic MTOCs among Thecamoebidae. The presence of MTOCs is now shown in five of nine orders comprising the class Discosea and potentially could be a phylogenetic marker in this group. We re-isolated Stenamoeba limacina from German soils. This strain shows a similar morphology and an almost complete SSU rDNA sequence identity with the type strain of S. limacina originating from gills of fishes, collected in Czech Republic.

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