Morphology and Molecular Phylogeny of Coelomic Gregarines (Apicomplexa) with Different Types of Motility: Urospora ovalis and U. travisiae from the Polychaete Travisia forbesii
Publication date: Available online 17 May 2016 Source:Protist Author(s): Andrei Diakin, Gita G. Paskerova, Timur G. Simdyanov, Vladimir V. Aleoshin, Andrea Valigurová Urosporids (Apicomplexa: Urosporidae) are eugregarines that parasitise marine invertebrates, such as annelids, molluscs, nemerteans and echinoderms, inhabiting their coelom and intestine. Urosporids exhibit considerable morphological plasticity, which correlates with their different modes of motility and variations in structure of their cortical zone, according to the localisation within the host. The gregarines Urospora ovalis and U. travisiae...
Source: Protist - May 17, 2016 Category: Molecular Biology Source Type: research
A Novel Lineage of ‘Naked Filose Amoebae’; Kraken carinae gen. nov. sp. nov. (Cercozoa) with a Remarkable Locomotion by Disassembly of its Cell Body
Publication date: Available online 28 April 2016 Source:Protist Author(s): Kenneth Dumack, Julia Schuster, David Bass, Michael Bonkowski The term ‘filose amoebae’ describes a highly polyphyletic assemblage of protists whose phylogenetic placement can be unpredictable based on gross morphology alone. We isolated six filose amoebae from soils of two European countries and describe a new genus and species of naked filose amoebae, Kraken carinae gen. nov. sp. nov. We provide a morphological description based on light microscopy and small subunit rRNA gene sequences (SSU rDNA). In culture, Kraken carinae strains...
Source: Protist - April 27, 2016 Category: Molecular Biology Source Type: research
Ultrastructure of the Periplastidial Compartment of the Diatom Phaeodactylum tricornutum
This study provides insights into the PPC ultrastructure and opens perspectives on the function of this residual cytoplasm of red algal origin. (Source: Protist)
Source: Protist - April 27, 2016 Category: Molecular Biology Source Type: research
What an Intron May Tell: Several Sexual Biospecies Coexist in Meriderma spp. (Myxomycetes)
Publication date: Available online 5 April 2016 Source:Protist Author(s): Yun Feng, Anja Klahr, Paulina Janik, Anna Ronikier, Thomas Hoppe, Yuri K. Novozhilov, Martin Schnittler Specimens of the snowbank myxomycete Meriderma atrosporum agg. from five European mountain ranges were sequenced for parts of the nuclear small subunit ribosomal RNA gene (SSU) and the protein elongation factor 1 alpha gene (EF1A). A phylogeny of the EF1A gene, including a very variable spliceosomal intron, resulted in seven phylogroups, and this topology was confirmed by SSU sequences. Two thirds of all specimens were heterozygou...
Source: Protist - April 5, 2016 Category: Molecular Biology Source Type: research
Trichomonas vaginalis Repair of Iron Centres Proteins: The Different Role of Two Paralogs
Publication date: Available online 29 March 2016 Source:Protist Author(s): Lígia S. Nobre, Dionigia Meloni, Miguel Teixeira, Eric Viscogliosi, Lígia M. Saraiva Trichomonas vaginalis, the causative parasite of one of the most prevalent sexually transmitted diseases, is, so far, the only protozoan encoding two putative Repair of Iron Centres (RIC) proteins. Homologs of these proteins have been shown to protect bacteria from the chemical stress imposed by mammalian immunity. In this work, the biochemical and functional characterisation of the T. vaginalis RICs revealed that the two proteins have different prop...
Source: Protist - March 29, 2016 Category: Molecular Biology Source Type: research
