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uBio  Web  Results 11 - 20 of about 222 Synonyms:    Spinipochira excavata  Broader Terms:    Spinipochira      External Resources: 11.  A two-way switch for inositol pyrophosphate signaling: Evolutionary history and biological significance of a unique, bifunctional kinase/phosphatase. Randall TA, Gu C, Li X, Wang H, Shears SB Advances in biological regulation, 2020 http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=0 12.  Phylogenetic Estimation of Community Composition and Novel Eukaryotic Lineages in Base Mine Lake: An Oil Sands Tailings Reclamation Site in Northern Alberta. Richardson E, Bass D, Smirnova A, Paoli L, Dunfield P, Dacks JB The Journal of eukaryotic microbiology J Eukaryot Microbiol Phylogenetic Estimation of Community Composition and Novel Eukaryotic Lineages in Base Mine Lake: An Oil Sands Tailings Reclamation Site in Northern Alberta. 86-99 10.1111/jeu.12757 Reclamation of anthropogenically impacted environments is a critical issue worldwide. In the oil sands extraction industry of Alberta, reclamation of mining-impacted areas, especially areas affected by tailings waste, is an important aspect of the mining life cycle. A reclamation technique currently under study is water-capping, where tailings are capped by water to create an end-pit lake (EPL). Base Mine Lake (BML) is the first full-scale end-pit lake in the Alberta oil sands region. In this study, we sequenced eukaryotic 18S rRNA genes recovered from 92 samples of Base Mine Lake water in a comprehensive sampling programme covering the ice-free period of 2015. The 565 operational taxonomic units (OTUs) generated revealed a dynamic and diverse community including abundant Microsporidia, Ciliata and Cercozoa, though 41% of OTUs were not classifiable below the phylum level by comparison to 18S rRNA databases. Phylogenetic analysis of five heterotrophic phyla (Cercozoa, Fungi, Ciliata, Amoebozoa and Excavata) revealed substantial novel diversity, with many clusters of OTUs that were more similar to each other than to any reference sequence. All of these groups are entirely or mostly heterotrophic, as a relatively small number of definitively photosynthetic clades were amplified from the BML samples. © 2019 International Society of Protistologists. Richardson Elisabeth E 0000-0001-7161-2889 Department of Biological Sciences, University of Alberta, Edmonton, AB, T6G 2E1, Canada. Bass David D 0000-0002-9883-7823 Department of Life Sciences, The Natural History Museum, Cromwell Road, South Kensington, London, SW7 5BD, United Kingdom. Centre for Environment, Fisheries and Aquaculture Science (Cefas), Barrack Rd, Weymouth, DT4 8UB, Dorset, United Kingdom. Smirnova Angela A Department of Biological Sciences, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada. Paoli Lucas L Department of Biology, École normale supérieure, 46 Rue d'Ulm, 75005, Paris, France. Department of Biology, Institute of Microbiology, ETH Zürich, Vladimir-Prelog-Weg 4, 8093, Zürich, Switzerland. Dunfield Peter P Department of Biological Sciences, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada. Dacks Joel B JB Department of Life Sciences, The Natural History Museum, Cromwell Road, South Kensington, London, SW7 5BD, United Kingdom. Division of Infectious Diseases, Department of Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2E1, Canada. eng Journal Article Research Support, Non-U.S. Gov't 2019 09 10 United States J Eukaryot Microbiol 9306405 1066-5234 IM Alberta Cercozoa classification Ciliophora classification Lakes parasitology Microbiota Microsporidia classification Mining Oil and Gas Fields parasitology Phylogeny Environmental microbiology molecular ecology 2019 03 06 2019 07 16 2019 08 12 2019 8 23 6 0 2020 9 12 6 0 2019 8 22 6 0 ppublish 31432582 10.1111/jeu.12757 Biol Rev Camb Philos Soc Comparative molecular cell biology of phototrophic euglenids and parasitic trypanosomatids sheds light on the ancestor of Euglenozoa. 1701-1721 10.1111/brv.12523 Parasitic trypanosomatids and phototrophic euglenids are among the most extensively studied euglenozoans. The phototrophic euglenid lineage arose relatively recently through secondary endosymbiosis between a phagotrophic euglenid and a prasinophyte green alga that evolved into the euglenid secondary chloroplast. The parasitic trypanosomatids (i.e. Trypanosoma spp. and Leishmania spp.) and the freshwater phototrophic euglenids (i.e. Euglena gracilis) are the most evolutionary distant lineages in the Euglenozoa phylogenetic tree. The molecular and cell biological traits they share can thus be considered as ancestral traits originating in the common euglenozoan ancestor. These euglenozoan ancestral traits include common mitochondrial presequence motifs, respiratory chain complexes containing various unique subunits, a unique ATP synthase structure, the absence of mitochondria-encoded transfer RNAs (tRNAs), a nucleus with a centrally positioned nucleolus, closed mitosis without dissolution of the nuclear membrane and nucleoli, a nuclear genome containing the unusual 'J' base (?-D-glucosyl-hydroxymethyluracil), processing of nucleus-encoded precursor messenger RNAs (pre-mRNAs) via spliced-leader RNA (SL-RNA) trans-splicing, post-transcriptional gene silencing by the RNA interference (RNAi) pathway and the absence of transcriptional regulation of nuclear gene expression. Mitochondrial uridine insertion/deletion RNA editing directed by guide RNAs (gRNAs) evolved in the ancestor of the kinetoplastid lineage. The evolutionary origin of other molecular features known to be present only in either kinetoplastids (i.e. polycistronic transcripts, compaction of nuclear genomes) or euglenids (i.e. monocistronic transcripts, huge genomes, many nuclear cis-spliced introns, polyproteins) is unclear. © 2019 Cambridge Philosophical Society. Vesteg Matej M 0000-0002-5055-2482 Department of Biology and Ecology, Faculty of Natural Sciences, Matej Bel University, 974 01, Banská Bystrica, Slovakia. Hadariová Lucia L Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), 252 50, Vestec, Czech Republic. Department of Parasitology, Faculty of Science, Charles University in Prague, 128 44, Prague, Czech Republic. Horváth Anton A Department of Biochemistry, Faculty of Natural Sciences, Comenius University, 842 15, Bratislava, Slovakia. Estraño Carlos E CE Department of Biological Sciences, University of Memphis, Memphis, TN, 38152-3560, USA. Schwartzbach Steven D SD Department of Biological Sciences, University of Memphis, Memphis, TN, 38152-3560, USA. Kraj?ovi? Juraj J Department of Biology, Faculty of Natural Sciences, University of ss. Cyril and Methodius, 917 01, Trnava, Slovakia. eng Journal Article Research Support, Non-U.S. Gov't Review 2019 05 16 England Biol Rev Camb Philos Soc 0414576 0006-3231 0 RNA, Ribosomal, 28S EC 2.7.7.6 DNA-Directed RNA Polymerases IM Biological Evolution DNA-Directed RNA Polymerases genetics metabolism Euglenida classification genetics Euglenozoa classification genetics Genome physiology Introns physiology Mitochondria genetics Molecular Biology Phototrophic Processes Phylogeny RNA Interference RNA, Ribosomal, 28S genetics Trypanosomatina classification enzymology genetics Euglena Excavata Leishmania RNA editing SL-RNA trans-splicing Trypanosoma bodonids diplonemids kinetoplastids 2018 08 02 2019 04 30 2019 05 02 2019 5 17 6 0 2020 5 5 6 0 2019 5 17 6 0 ppublish 31095885 10.1111/brv.12523