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19 results for “Discosea”
Fig. 2 in Molecular Phylogenetics Evidence for a Novel Lineage of Amoebae Within Discosea (Amoebozoa: Lobosa)
Fig. 2. Maximum-Likelihood SSU tree of subphylum Lobosa, with emphasis on major representatives of the class Discosea. The monophyletic resolution of Flabellinia and Longamoebia was obtained after omitting unstable taxa Stygamoeba and Vermistella (see Fig. 1). Members of the class Tubulinea were used as outgroup. Bootstrap values (BV) for ML/NJ/MP were presented at nodes; filled circles – 100% BV with all methods; * – node supported but BV <40%. For acc. nos. – see Fig. 1.
Fig. 1 in Molecular Phylogenetics Evidence for a Novel Lineage of Amoebae Within Discosea (Amoebozoa: Lobosa)
Fig. 1. Maximum-Likelihood tree based on SSU rDNA of major representatives of the subphylum Lobosa and the class Discosea, following the classification of Smirnov et al. (2011). Members of the class Tubulinea were used as outgroup. Subclasses and orders were indicated, and for Dermamoebida families also. Bootstrap values (BV) for ML/NJ/MP were presented at nodes; filled circles – 100% BV with all methods; * – node supported but BV <40%.
Fig. 1 in High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats
Fig. 1. Diversity of locomotive and floating forms of studied strains: A–E – Mayorella sp. strain Belaya; F–J – Mayorella sp. strain 2Th5; K–O – Mayorella sp. strain FE 16; P–S – Mayorella sp. strain JJP2003. DIC and phase contrast images, scale bar is 20 μm.
Fig. 4 in High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats
Fig. 4. Phylogenetic tree based on SSU rRNA gene sequences for Mayorella species only, with few outgroups. Supports are indicated as PP/ BS; black dots indicate 1.0/100 PP/BS support. GTR + γ + I model of evolution; 1414 sites.
Fig. 3 in High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats
Fig. 3. Phylogenetic tree based on SSU rRNA gene sequences for all available Mayorella sequences and a wide sample of Discosea and Tubulinea taxa. Supports are indicated as PP/BS; black dots indicate 1.0/100 PP/BS support. GTR + γ + I model of evolution; 1554 sites.
Fig. 2 in High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats
Fig. 2. Diversity of locomotive and floating forms of studied strains: A–E – Mayorella sp. strain Amur_2; F–J – Mayorella sp. strain FE_2; K–O – Mayorella sp. strain Germany; P–T – Mayorella sp. strain FE_mz241; U–Y – Mayorella sp. strain Oklahoma. Scale bar is 20 μm.
Fig. 1 in Naked Lobose Amoebae Of The Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) In Ukrainian Water Bodies
Fig. 1. Sampling localities (Ukraine).
Fig. 2 in Naked Lobose Amoebae Of The Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) In Ukrainian Water Bodies
Fig. 2. Naked amoeba of the
Fig. S3 in High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats
Fig. S3
Fig. S1 in High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats
Fig. S1
Fig. 4 A–D in Thecochaos is not a myth: study of the genus Thecochaos (Amoebozoa, Discosea) - a rediscovered group of lobose amoeba, with short SSU gene
Fig. 4 A–D Ultrastructure of the nucleus of Thecochaos fibrillosum. A Cross-section through the nucleus of amoeba and the contractile vacuole surrounded with tubulovesicular spongiom. B A portion of the nuclear membrane with the underlying microfilamentous layer (black arrow) and nuclear pores (black arrowheads). C The fragment of the patchy nucleolus showing several small lacunae filled with the karyoplasm (one is marked with a white asterisk). Small patches of electron-dense material, appearing darker than the nucleolus' main material, are labeled with white arrows. A granule of electron-dense material resembling chromatin is labeled with the white arrowhead. D The fragment of amoebae cell showing the nucleus and the spongiom of the contractile vacuole localized near the nucleus. This is another section of the same nucleus as illustrated in A. Abbreviations: nu, nucleolus; l, lacuna; b, bacteria; m, mitochondria; cv, contractile vacuole; pm, plasma membrane; nm, nuclear membrane; n, nucleus; s, spongiom. Scale bars: A, D, 1 μm; B, 200 nm; C, 500 nm
Fig. 3 A–E in Thecochaos is not a myth: study of the genus Thecochaos (Amoebozoa, Discosea) - a rediscovered group of lobose amoeba, with short SSU gene
Fig. 3 A–E Ultrastructure of Thecochaos fibrillosum. A A fragment of the amoeba cell demonstrating the stratification of the cytoplasm into the peripheral hyaloplasm and the inner granuloplasm. Numerous vacuoles and vesicles are noticeable at the periphery of the granuloplasm. B Cell coat consisting of the loose filamentous layer (distinct filaments are pointed by black arrows), covering a thick basal layer of electron-dense amorphous glycocalyx (black double arrowheads). C The peripheral area of the hyaloplasm, containing microfilamentous bundles, perpendicular to the plasma membrane (black arrowheads). Black arrows indicate cross-sections of filaments belonging to the upper layer of the glycocalyx. D An area of the granuloplasm containing dictyosomes of the Golgi complex, mitochondria with tubular cristae and dense matrix, and a single-membraned microbody. E Vacuoles containing bacteria. Abbreviations: pm, plasma membrane; hl, hyaloplasm; gr, granuloplasm; m, mitochondria; d, dictyosome of the Golgi complex; b, bacteria. Scale bars: A, 1 μm; B and C, 200 nm; D and E, 500 nm
Fig. 7 A–I in Thecochaos is not a myth: study of the genus Thecochaos (Amoebozoa, Discosea) - a rediscovered group of lobose amoeba, with short SSU gene
Fig. 7 A–I Materials on Thecochaos species hold in the collection of E. Penard's slides deposited with the British Museum of Natural History (London). DIC optics is used to enhance the contrast of these rather bleach ancient preparations. A Page from the collection catalog, listing seven slides of T. album and the only slide of T. fibrillosum. B, C Actual view of these slides, showing the high quality of mount and good conditions of the preparation. D, E Thecochaos album, the overall appearance of the cell. F Thecochaos album nuclei showing the peripheral position of the nucleolar material
Fig. 2 A–M in Thecochaos is not a myth: study of the genus Thecochaos (Amoebozoa, Discosea) - a rediscovered group of lobose amoeba, with short SSU gene
Fig. 2 A–M Light microscopy of Thecochaos fibrillosum, DIC. A–C Moving cells on the glass surface. D–M Light microscopy of the cytoplasm and nuclei of Thecochaos fibrillosum, showing variants of
Fig. 6 A, B in Thecochaos is not a myth: study of the genus Thecochaos (Amoebozoa, Discosea) - a rediscovered group of lobose amoeba, with short SSU gene
Fig. 6 A, B Multigene phylogeny of Thecochaos fibrillosum. A Tree based on the alignment of 58 genes, each individual gene alignment contained both Thecochaos (11 021 AA positions in total) and Stratorugosa gene sequences (18 761 AA positions in total). RAxML (LGX+ G4m model + I)/ Phylobayes (LG model with CAT approximation)/IqTree/ (LG+ F + R4 model). Black circles indicate full support by all methods used. "–" indicates that the pattern of branching was not recovered by one of the reconstruction methods used. Gray arrow indicates the alterative position of Stratorugosa clade under PhyloBayes analysis. B Tree based on the alignment of 151 protein-coding genes including either Thecochaos (13 898 AA positions) or Stratorugosa sequences (42 744 AA positions) or both, so the 58 gene set is also in. IQTree; Sh-aLRT supports values are indicated
Fig. 8 A–E in Thecochaos is not a myth: study of the genus Thecochaos (Amoebozoa, Discosea) - a rediscovered group of lobose amoeba, with short SSU gene
Fig. 8 A–E Schemes or phylogenetic trees of Discosea obtained in SSU and multigene phylogenetic analyses and comparison of two alternative configurations obtained in the present SSU phylogenetic analysis
Fig. 5 in Thecochaos is not a myth: study of the genus Thecochaos (Amoebozoa, Discosea) - a rediscovered group of lobose amoeba, with short SSU gene
Fig. 5 SSU phylogenetic tree showing the position of Thecochaos fibrillosum. PhyML analysis (GTRGAMMA model and a proportion of invariant sites; 1620 sites used) and Bayesian analysis (GTR- GAMMA model (8 rate categories) and the covarion model, same mask). Black circles indicate full support (100/1.0 of BS/PP). Open
Fig. 3 in Molecular Phylogenetics Evidence for a Novel Lineage of Amoebae Within Discosea (Amoebozoa: Lobosa)
Fig. 3. Maximum-Likelihood trees including partial sequences retrieved from GenBank, based on the 660-bp Ami fragment (A – LG30-03 positions: 566-1228), and on the first 5' 550-bp portion (B – LG30-03 positions: 1-547). Trees were rooted on the Dermamoebidae. At nodes, BV for ML/NJ/MP (filled circles – 100% BV with all methods; * – node supported but BV <40%). See Fig. 1 for acc. nos.
Fig. S2 in High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats
Fig. S2
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