A Cellulose Loosening Protein Is One of the Most 1 Widely Distributed Tools
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PUBLIC LIBRARY of SCIENCE | plosgenetics.org | ISSN 1553-7390 | Volume 2 | Issue 12 | DECEMBER 2006 GENETICS PUBLIC LIBRARY of SCIENCE www.plosgenetics.org Volume 2 | Issue 12 | DECEMBER 2006 Interview Review Knight in Common Armor: 1949 Unraveling the Genetics 1956 An Interview with Sir John Sulston e225 of Human Obesity e188 Jane Gitschier David M. Mutch, Karine Clément Research Articles Natural Variants of AtHKT1 1964 The Complete Genome 2039 Enhance Na+ Accumulation e210 Sequence and Comparative e206 in Two Wild Populations of Genome Analysis of the High Arabidopsis Pathogenicity Yersinia Ana Rus, Ivan Baxter, enterocolitica Strain 8081 Balasubramaniam Muthukumar, Nicholas R. Thomson, Sarah Jeff Gustin, Brett Lahner, Elena Howard, Brendan W. Wren, Yakubova, David E. Salt Matthew T. G. Holden, Lisa Crossman, Gregory L. Challis, About the Cover Drosophila SPF45: A Bifunctional 1974 Carol Churcher, Karen The jigsaw image of representatives Protein with Roles in Both e178 Mungall, Karen Brooks, Tracey of various lines of eukaryote evolution Splicing and DNA Repair Chillingworth, Theresa Feltwell, refl ects the current lack of consensus as Ahmad Sami Chaouki, Helen K. Zahra Abdellah, Heidi Hauser, to how the major branches of eukaryotes Salz Kay Jagels, Mark Maddison, fi t together. The illustrations from upper Sharon Moule, Mandy Sanders, left to bottom right are as follows: a single Mammalian Small Nucleolar 1984 Sally Whitehead, Michael A. scale from the surface of Umbellosphaera; RNAs Are Mobile Genetic e205 Quail, Gordon Dougan, Julian Amoeba, the large amoeboid organism Elements Parkhill, Michael B. Prentice used as an introduction to protists for Michel J. Weber many school children; Euglena, the iconic Low Levels of Genetic 2052 fl agellate that is often used to challenge Soft Sweeps III: The Signature 1998 Divergence across e215 ideas of plants (Euglena has chloroplasts) of Positive Selection from e186 Geographically and and animals (Euglena moves); Stentor, Recurrent Mutation Linguistically Diverse one of the larger ciliates; Cacatua, the Pleuni S. -
University of Copenhagen
Classification, Naming and Evolutionary History of Glycosyltransferases from Sequenced Green and Red Algal Genomes Ulvskov, Peter; Paiva, Dionisio Soares; Domozych, David; Harholt, Jesper Published in: P L o S One DOI: 10.1371/journal.pone.0076511 Publication date: 2013 Document version Publisher's PDF, also known as Version of record Citation for published version (APA): Ulvskov, P., Paiva, D. S., Domozych, D., & Harholt, J. (2013). Classification, Naming and Evolutionary History of Glycosyltransferases from Sequenced Green and Red Algal Genomes. P L o S One, 8(10), [e76511.]. https://doi.org/10.1371/journal.pone.0076511 Download date: 02. okt.. 2021 Classification, Naming and Evolutionary History of Glycosyltransferases from Sequenced Green and Red Algal Genomes Peter Ulvskov1, Dionisio Soares Paiva1¤, David Domozych2, Jesper Harholt1* 1 Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, Denmark, 2 Department of Biology and Skidmore Microscopy Imaging Center, Skidmore College, Saratoga Springs, New York, United States of America Abstract The Archaeplastida consists of three lineages, Rhodophyta, Virideplantae and Glaucophyta. The extracellular matrix of most members of the Rhodophyta and Viridiplantae consists of carbohydrate-based or a highly glycosylated protein-based cell wall while the Glaucophyte covering is poorly resolved. In order to elucidate possible evolutionary links between the three advanced lineages in Archaeplastida, a genomic analysis was initiated. Fully sequenced genomes from -
Species Tree Inference and Update on Very Large Datasets Using Approximation, Randomization, Parallelization, and Vectorization
Species tree inference and update on very large datasets using approximation, randomization, parallelization, and vectorization Siavash Mirarab Electrical and Computer Engineering University of California at San Diego 1 Phylogenetic reconstruction from data Gorilla Human Chimpanzee Orangutan ACTGCACACCG ACTGCCCCCG AATGCCCCCG CTGCACACGG 2 Phylogenetic reconstruction from data CTGCACACCG CTGCACACCG CTGCACACGG Gorilla Human Chimpanzee Orangutan ACTGCACACCG ACTGCCCCCG AATGCCCCCG CTGCACACGG 2 Phylogenetic reconstruction from data CTGCACACCG CTGCACACCG CTGCACACGG Gorilla Human Chimpanzee Orangutan ACTGCACACCG ACTGCCCCCG AATGCCCCCG CTGCACACGG 2 Phylogenetic reconstruction from data CTGCACACCG CTGCACACCG CTGCACACGG Gorilla Human Chimpanzee Orangutan ACTGCACACCG ACTGCCCCCG AATGCCCCCG CTGCACACGG Gorilla ACTGCACACCG Human ACTGC-CCCCG Chimpanzee AATGC-CCCCG Orangutan -CTGCACACGG D 2 Phylogenetic reconstruction from data CTGCACACCG CTGCACACCG CTGCACACGG Gorilla Human Chimpanzee Orangutan ACTGCACACCG ACTGCCCCCG AATGCCCCCG CTGCACACGG Orangutan Chimpanzee Gorilla ACTGCACACCG Human ACTGC-CCCCG Chimpanzee AATGC-CCCCG Orangutan -CTGCACACGG Gorilla Human D P (D T ) T | 2 Applications: HIV forensic Texas case Washington case Scaduto et al., PNAS, 2010 3 Applications: microbiome https://www.nytimes.com/2017/11/06/well/live/ unlocking-the-secrets-of-the-microbiome.html 4 Applications: microbiome https://www.nytimes.com/2017/11/06/well/live/ unlocking-the-secrets-of-the-microbiome.html Morgan, Xochitl C., Nicola Segata, and Curtis Huttenhower. "Trends in genetics (2013) 4 Applications: food safety Tracking the source of a listeriosis outbreak Jackson, Brendan R., et al. Reviews of Infectious Diseases (2016) 5 Fig. 3. Molecular dating of the 2014 outbreak. (A) BEAST dating of the separation of the 2014 lineage from Middle African lineages (SL = Sierra Leone; GN = Guinea; DRC = Democratic Republic of Congo; tMRCA: Sep 2004, 95% HPD: Oct 2002 - May 2006). -
Exhaustive Reanalysis of Barcode Sequences from Public
Exhaustive reanalysis of barcode sequences from public repositories highlights ongoing misidentifications and impacts taxa diversity and distribution: a case study of the Sea Lettuce. Antoine Fort1, Marcus McHale1, Kevin Cascella2, Philippe Potin2, Marie-Mathilde Perrineau3, Philip Kerrison3, Elisabete da Costa4, Ricardo Calado4, Maria Domingues5, Isabel Costa Azevedo6, Isabel Sousa-Pinto6, Claire Gachon3, Adrie van der Werf7, Willem de Visser7, Johanna Beniers7, Henrice Jansen7, Michael Guiry1, and Ronan Sulpice1 1NUI Galway 2Station Biologique de Roscoff 3Scottish Association for Marine Science 4University of Aveiro 5Universidade de Aveiro 6University of Porto Interdisciplinary Centre of Marine and Environmental Research 7Wageningen University & Research November 24, 2020 Abstract Sea Lettuce (Ulva spp.; Ulvophyceae, Ulvales, Ulvaceae) is an important ecological and economical entity, with a worldwide distribution and is a well-known source of near-shore blooms blighting many coastlines. Species of Ulva are frequently misiden- tified in public repositories, including herbaria and gene banks, making species identification based on traditional barcoding hazardous. We investigated the species distribution of 295 individual distromatic foliose strains from the North East Atlantic by traditional barcoding or next generation sequencing. We found seven distinct species, and compared our results with all worldwide Ulva spp sequences present in the NCBI database for the three barcodes rbcL, tuf A and the ITS1. Our results demonstrate a large degree of species misidentification in the NCBI database. We estimate that 21% of the entries pertaining to foliose species are misannotated. In the extreme case of U. lactuca, 65% of the entries are erroneously labelled specimens of another Ulva species, typically U. fenestrata. In addition, 30% of U. -
A Revised Classification of Naked Lobose Amoebae (Amoebozoa
Protist, Vol. 162, 545–570, October 2011 http://www.elsevier.de/protis Published online date 28 July 2011 PROTIST NEWS A Revised Classification of Naked Lobose Amoebae (Amoebozoa: Lobosa) Introduction together constitute the amoebozoan subphy- lum Lobosa, which never have cilia or flagella, Molecular evidence and an associated reevaluation whereas Variosea (as here revised) together with of morphology have recently considerably revised Mycetozoa and Archamoebea are now grouped our views on relationships among the higher-level as the subphylum Conosa, whose constituent groups of amoebae. First of all, establishing the lineages either have cilia or flagella or have lost phylum Amoebozoa grouped all lobose amoe- them secondarily (Cavalier-Smith 1998, 2009). boid protists, whether naked or testate, aerobic Figure 1 is a schematic tree showing amoebozoan or anaerobic, with the Mycetozoa and Archamoe- relationships deduced from both morphology and bea (Cavalier-Smith 1998), and separated them DNA sequences. from both the heterolobosean amoebae (Page and The first attempt to construct a congruent molec- Blanton 1985), now belonging in the phylum Per- ular and morphological system of Amoebozoa by colozoa - Cavalier-Smith and Nikolaev (2008), and Cavalier-Smith et al. (2004) was limited by the the filose amoebae that belong in other phyla lack of molecular data for many amoeboid taxa, (notably Cercozoa: Bass et al. 2009a; Howe et al. which were therefore classified solely on morpho- 2011). logical evidence. Smirnov et al. (2005) suggested The phylum Amoebozoa consists of naked and another system for naked lobose amoebae only; testate lobose amoebae (e.g. Amoeba, Vannella, this left taxa with no molecular data incertae sedis, Hartmannella, Acanthamoeba, Arcella, Difflugia), which limited its utility. -
Systema Naturae 2000 (Phylum, 6 Nov 2017)
The Taxonomicon Systema Naturae 2000 Classification of Domain Bacteria (prokaryotes) down to Phylum Compiled by Drs. S.J. Brands Universal Taxonomic Services 6 Nov 2017 Systema Naturae 2000 - Domain Bacteria - Domain Bacteria Woese et al. 1990 1 Genus †Eoleptonema Schopf 1983, incertae sedis 2 Genus †Primaevifilum Schopf 1983, incertae sedis 3 Genus †Archaeotrichion Schopf 1968, incertae sedis 4 Genus †Siphonophycus Schopf 1968, incertae sedis 5 Genus Bactoderma Tepper and Korshunova 1973 (Approved Lists 1980), incertae sedis 6 Genus Stibiobacter Lyalikova 1974 (Approved Lists 1980), incertae sedis 7.1.1.1.1.1 Superphylum "Proteobacteria" Craig et al. 2010 1.1 Phylum "Alphaproteobacteria" 1.2.1 Phylum "Acidithiobacillia" 1.2.2.1 Phylum "Gammaproteobacteria" 1.2.2.2.1 Candidate phylum Muproteobacteria (RIF23) Anantharaman et al. 2016 1.2.2.2.2 Phylum "Betaproteobacteria" 2 Phylum "Zetaproteobacteria" 7.1.1.1.1.2 Phylum "Deltaproteobacteria_1" 7.1.1.1.2.1.1.1 Phylum "Deltaproteobacteria" [polyphyletic] 7.1.1.1.2.1.1.2.1 Phylum "Deltaproteobacteria_2" 7.1.1.1.2.1.1.2.2 Phylum "Deltaproteobacteria_3" 7.1.1.1.2.1.2 Candidate phylum Dadabacteria (CSP1-2) Hug et al. 2015 7.1.1.1.2.2.1 Candidate phylum "MBNT15" 7.1.1.1.2.2.2 Candidate phylum "Uncultured Bacterial Phylum 10 (UBP10)" Parks et al. 2017 7.1.1.2.1 Phylum "Nitrospirae_1" 7.1.1.2.2 Phylum Chrysiogenetes Garrity and Holt 2001 7.1.2.1.1 Phylum "Nitrospirae" Garrity and Holt 2001 [polyphyletic] 7.1.2.1.2.1.1 Candidate phylum Rokubacteria (CSP1-6) Hug et al. -
Libros Sobre Enfermedades Autoinmunes: Tratamientos, Tipos Y Diagnósticos- Profesor Dr
- LIBROS SOBRE ENFERMEDADES AUTOINMUNES: TRATAMIENTOS, TIPOS Y DIAGNÓSTICOS- PROFESOR DR. ENRIQUE BARMAIMON- 9 TOMOS- AÑO 2020.1- TOMO VI- - LIBROS SOBRE ENFERMEDADES AUTOINMUNES: TRATAMIENTOS, TIPOS Y DIAGNÓSTICOS . AUTOR: PROFESOR DR. ENRIQUE BARMAIMON.- - Doctor en Medicina.- - Cátedras de: - Anestesiología - Cuidados Intensivos - Neuroanatomía - Neurofisiología - Psicofisiología - Neuropsicología. - 9 TOMOS - - TOMO VI - -AÑO 2020- 1ª Edición Virtual: (.2020. 1)- - MONTEVIDEO, URUGUAY. 1 - LIBROS SOBRE ENFERMEDADES AUTOINMUNES: TRATAMIENTOS, TIPOS Y DIAGNÓSTICOS- PROFESOR DR. ENRIQUE BARMAIMON- 9 TOMOS- AÑO 2020.1- TOMO VI- - Queda terminantemente prohibido reproducir este libro en forma escrita y virtual, total o parcialmente, por cualquier medio, sin la autorización previa del autor. -Derechos reservados. 1ª Edición. Año 2020. Impresión [email protected]. - email: [email protected].; y [email protected]; -Montevideo, 15 de enero de 2020. - BIBLIOTECA VIRTUAL DE SALUD del S. M.U. del URUGUAY; y BIBLIOTECA DEL COLEGIO MÉDICO DEL URUGUAY. 0 0 0 0 0 0 0 0. 2 - LIBROS SOBRE ENFERMEDADES AUTOINMUNES: TRATAMIENTOS, TIPOS Y DIAGNÓSTICOS- PROFESOR DR. ENRIQUE BARMAIMON- 9 TOMOS- AÑO 2020.1- TOMO VI- - TOMO V I - 3 - LIBROS SOBRE ENFERMEDADES AUTOINMUNES: TRATAMIENTOS, TIPOS Y DIAGNÓSTICOS- PROFESOR DR. ENRIQUE BARMAIMON- 9 TOMOS- AÑO 2020.1- TOMO VI- - ÍNDICE.- - TOMO I . - - ÍNDICE. - PRÓLOGO.- - INTRODUCCIÓN. - CAPÍTULO I: -1)- GENERALIDADES. -1.1)- DEFINICIÓN. -1.2)- CAUSAS Y FACTORES DE RIESGO. -1.2.1)- FACTORES EMOCIONALES. -1.2.2)- FACTORES AMBIENTALES. -1.2.3)- FACTORES GENÉTICOS. -1.3)- Enterarse aquí, como las 10 Tipos de semillas pueden mejorar la salud. - 1.4)- TIPOS DE TRATAMIENTO DE ENFERMEDADES AUTOINMUNES. -1.4.1)- Remedios Naturales. -1.4.1.1)- Mejorar la Dieta. -
Protistology Light-Microscopic Morphology and Ultrastructure Of
Protistology 13 (1), 26–35 (2019) Protistology Light-microscopic morphology and ultrastructure of Polychaos annulatum (Penard, 1902) Smirnov et Goodkov, 1998 (Amoebozoa, Tubulinea, Euamo- ebida), re-isolated from the surroundings of St. Petersburg (Russia) Oksana Kamyshatskaya1,2, Yelisei Mesentsev1, Ludmila Chistyakova2 and Alexey Smirnov1 1 Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia 2 Core Facility Center “Culturing of microorganisms”, Research park of St. Petersburg State Univeristy, St. Petersburg State University, Botanicheskaya St., 17A, 198504, Peterhof, St. Petersburg, Russia | Submitted December 15, 2018 | Accepted January 21, 2019 | Summary We isolated the species Polychaos annulatum (Penard, 1902) Smirnov et Goodkov, 1998 from a freshwater habitat in the surrounding of Saint-Petersburg. The previous re-isolation of this species took place in 1998; at that time the studies of its light- microscopic morphology were limited with the phase contrast optics, and the electron- microscopic data were obtained using the traditional glutaraldehyde fixation, preceded with prefixation and followed by postfixation with osmium tetroxide. In the present paper, we provide modern DIC images of P. annulatum. Using the fixation protocol that includes a mixture of the glutaraldehyde and paraformaldehyde we were able to obtain better fixation quality for this species. We provide some novel details of its locomotive morphology, nuclear morphology, and ultrastructure. The present finding evidence that P. annulatum is a widely distributed species that could be isolated from a variety of freshwater habitats. Key words: amoebae, Polychaos, ultrastructure, Amoebozoa Introduction Amoeba proteus). These amoebae usually have a relatively large size, exceeding hundred of microns, The largest species of naked lobose amoebae they produce broad, thick pseudopodia with (gymnamoebae) – members of the family Amoe- smooth outlines (lobopodia). -
Seaweeds of California Green Algae
PDF version Remove references Seaweeds of California (draft: Sun Nov 24 15:32:39 2019) This page provides current names for California seaweed species, including those whose names have changed since the publication of Marine Algae of California (Abbott & Hollenberg 1976). Both former names (1976) and current names are provided. This list is organized by group (green, brown, red algae); within each group are genera and species in alphabetical order. California seaweeds discovered or described since 1976 are indicated by an asterisk. This is a draft of an on-going project. If you have questions or comments, please contact Kathy Ann Miller, University Herbarium, University of California at Berkeley. [email protected] Green Algae Blidingia minima (Nägeli ex Kützing) Kylin Blidingia minima var. vexata (Setchell & N.L. Gardner) J.N. Norris Former name: Blidingia minima var. subsalsa (Kjellman) R.F. Scagel Current name: Blidingia subsalsa (Kjellman) R.F. Scagel et al. Kornmann, P. & Sahling, P.H. 1978. Die Blidingia-Arten von Helgoland (Ulvales, Chlorophyta). Helgoländer Wissenschaftliche Meeresuntersuchungen 31: 391-413. Scagel, R.F., Gabrielson, P.W., Garbary, D.J., Golden, L., Hawkes, M.W., Lindstrom, S.C., Oliveira, J.C. & Widdowson, T.B. 1989. A synopsis of the benthic marine algae of British Columbia, southeast Alaska, Washington and Oregon. Phycological Contributions, University of British Columbia 3: vi + 532. Bolbocoleon piliferum Pringsheim Bryopsis corticulans Setchell Bryopsis hypnoides Lamouroux Former name: Bryopsis pennatula J. Agardh Current name: Bryopsis pennata var. minor J. Agardh Silva, P.C., Basson, P.W. & Moe, R.L. 1996. Catalogue of the benthic marine algae of the Indian Ocean. -
Ulva L. (Ulvales, Chlorophyta) from Manawatāwhi/ Three Kings Islands, New Zealand: Ulva Piritoka Ngāti Kuri, Heesch & W.A.Nelson, Sp
cryptogamie Algologie 2021 ● 42 ● 9 DIRECTEUR DE LA PUBLICATION / PUBLICATION DIRECTOR : Bruno DAVID Président du Muséum national d’Histoire naturelle RÉDACTRICE EN CHEF / EDITOR-IN-CHIEF : Line LE GALL Muséum national d’Histoire naturelle ASSISTANTE DE RÉDACTION / ASSISTANT EDITOR : Marianne SALAÜN ([email protected]) MISE EN PAGE / PAGE LAYOUT : Marianne SALAÜN RÉDACTEURS ASSOCIÉS / ASSOCIATE EDITORS Ecoevolutionary dynamics of algae in a changing world Stacy KRUEGER-HADFIELD Department of Biology, University of Alabama, 1300 University Blvd, Birmingham, AL 35294 (United States) Jana KULICHOVA Department of Botany, Charles University, Prague (Czech Republic) Cecilia TOTTI Dipartimento di Scienze della Vita e dell’Ambiente, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona (Italy) Phylogenetic systematics, species delimitation & genetics of speciation Sylvain FAUGERON UMI3614 Evolutionary Biology and Ecology of Algae, Departamento de Ecología, Facultad de Ciencias Biologicas, Pontificia Universidad Catolica de Chile, Av. Bernardo O’Higgins 340, Santiago (Chile) Marie-Laure GUILLEMIN Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia (Chile) Diana SARNO Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli (Italy) Comparative evolutionary genomics of algae Nicolas BLOUIN Department of Molecular Biology, University of Wyoming, Dept. 3944, 1000 E University Ave, Laramie, WY 82071 (United States) Heroen VERBRUGGEN School of BioSciences, -
(Amoebozoa, Discosea, Dactylopodida) — a New Freshwater Amoeba with Unusual Combination of Scales
Protistology 11 (4), 238–247 (2017) Protistology Korotnevella novazelandica n. sp. (Amoebozoa, Discosea, Dactylopodida) — a new freshwater amoeba with unusual combination of scales Ilya A. Udalov1, Eckhard Völcker2 and Alexey Smirnov1 1 Department of Invertebrate Zoology, Faculty of Biology, St. Petersburg State University, St. Petersburg, Russia 2 Penard Labs, Cape Town, South Africa | Submitted November 25, 2017 | Accepted December 6, 2017 | Summary A new freshwater species of naked lobose amoebae, Korotnevella novazelandica n. sp. (Amoebozoa, Discosea, Flabellinia, Dactylopodida), from New Zealand was studied and described. This species has sombrero-shaped as well as dish-shaped scales, a combination previously not known in Korotnevella. Phylogenetic analysis based on 18S rRNA gene placed it in a clade along with Korotnevella species possessing uniform sombrero-shaped scales: K. pelagolacustris, K. jeppesenii and K. fousta. At the level of light microscopy, K. novazelandica lacks clear distinctions from the above-mentioned species, but it could be easily distinguished from them in electron microscopy by the presence of dish-shaped scales. The presence of dish-shaped scales may be considered as a primitive character for the K. pelagolacustris + K. jeppesenii + K. fousta + K. novazelandica clade, which were secondarily lost in the most of species in this clade. The sombrero-shaped scales could have evolved from basket scales or developed de novo after the loss of basket scales. Key words: 18S rRNA gene, Korotnevella, molecular phylogeny, scales, systematics, ultrastructure Introduction considered to be species-specific (Pennick and Goodfellow, 1975; Page, 1981; Smirnov, 1999; The genus Korotnevella encompasses flattened O’Kelly et al., 2001; Udalov, 2015, 2016; Udalov amoebae of dactylopodial morphotype (Smirnov et al., 2016; Zlatogursky et al., 2016; Van Wichelen and Goodkov, 1999; Smirnov and Brown, 2004), et al., 2016). -
Amoebozoa, Discosea, Dermamoebida) in Ukrainian Water Bodies
Zoodiversity, 54(2): 89–94, 2020 Fauna and Systematics DOI 10.15407/zoo2020.02.089 UDC 593.121 NAKED LOBOSE AMOEBAE OF THE GENUS MAYORELLA (AMOEBOZOA, DISCOSEA, DERMAMOEBIDA) IN UKRAINIAN WATER BODIES M. K. Patsyuk Zhytomyr Ivan Franko State University, Vel. Berdychivska st., 40, Zhytomyr, 10008 Ukraine E-mail: [email protected] Naked Lobose Amoebae of the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Ukrainian Water Bodies. Patsyuk, M. K. — In Ukrainian water bodies, the genus Mayorella Schaeff er, 1926 is represented by ten species: Mayorella cantabrigiensis Page, 1983, Mayorella vespertilioides Page, 1983, Mayorella bigemma Schaeff er, 1918, Mayorella leidyi Bovee, 1970, Mayorella penardi Page, 1972, Mayorella viridis Leidy, 1874, Mayorella sp. (1), Mayorella sp. (2), Mayorella sp. (3), Mayorella sp. (4). Th e most widely distributed are M. cantabrigiensis, M. vespertilioides, Mayorella sp. (1), the least observed are M. leidyi, M. penardi, M. viridis, Mayorella sp. (4). Th e distribution of amoebae is infl uenced by abiotic environmental factors. Key words: naked amoebae, Mayorella, Ukrainian water bodies, abiotic factors. Introduction Schaeff er erected the genus Mayorella in 1926 with the type species Mayorella bigemma (Amoeba bigemma) Schaeff er, 1918 (Glotova et al., 2018). In the current system of naked lobose amoebae (Smirnov et al., 2011), this genus belongs to the class Discosea Cavalier-Smith et al., 2004, order Dermamoebida Cavalier-Smith, 2004, family Mayorellidae Schaeff er, 1926. Th e amoebae have mayorellian morphotype (Smirnov & Goodkov, 1999), generally with undivided fi ngerlike hyaline subpseudopodia of approximately equal length produced out of hya- line cytoplasm; in some species, subpseudopodia may be temporarily absent during locomotion.