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8 results for “Roholtiella”
FIGURE 7. Secondary structures for the D1–D1 in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 7. Secondary structures for the D1–D1' helix in the ITS regions for Roholtiella spp. and representative outgroup taxa, Calochaete cimrmanii and Nostoc indistinguendum. Arrows and a bold font style show bases variable among species, while the circled adenine residue is an alternate base in R. edaphica CCALA 1063 and circled cytosine is an alternate base in N. indistinguendum. A–B. Equally thermodynamically stable structures in R. edaphica are shown for the following strains: CCALA 1061 for the operon with no tRNA genes; CCALA 1055-56, 1060, 1062 for the no tRNA operon as well as the operon with both tRNA genes. C–D. Differences in operons are shown for R. mojaviensis. C. Operon with no tRNA for CCALA 1051 and 1052 as well as the operon with both tRNA for CCALA 1052. D. Variation of the operon with no tRNA of CCALA 1051. E. No sequence differences existed between operons with no or with both tRNAs for R. fluviatilis (CCALA 1058), and R. bashkiriorum (CCALA 1057, 1059). F. D1–D1' helix for C. cimrmanii (strain CCALA 1012) showing the operon with no tRNA. G. D1–D1' helix for recovered operons with and without both tRNAs for N. indistinguendum (strain CM1-VF10).
FIGURE 8. Secondary structures for the BoxB and V3 in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 8. Secondary structures for the BoxB and V3 helices in the ITS regions for Roholtiella spp. and representative outgroup taxa, C. cimrmanii and N. indistinguendum. Arrows and a bold font style show bases variable among species. Helices are arranged by taxon in vertical columns, with taxon label next to the V3 helix. A–F. BoxB helices from operons with both tRNA genes. A. Roholtiella edaphica strains CCALA 1055-56, CCALA 1060-61. B. Roholtiella edaphica strain CCALA 1062. C. Roholtiella mojaviensis strains CCALA 1051- 52. D. Roholtiella bashkiriorum strains CCALA 1057 and 1059. E. Roholtiella fluviatilis strain CCALA 1058. F. Nostoc indistinguendum strain CM1-VF10. G–M. BoxB helices from operons with no tRNA genes. G. Roholtiella edaphica strains CCALA 1055 and 1060. H. Roholtiella edaphica strain CCALA 1062. I. Roholtiella mojaviensis strain CCALA 1052. J. Roholtiella bashkiriorum strain CCALA 1057. K. Roholtiella fluviatilis strain CCALA 1058. L. C. cimrmanii strain CCALA 1012. M. Nostoc indistinguendum strain CM1-VF10. N–T. V3 helices. Circled residues represent alternate bases in different strains, or in the case of R. fluviatilis, between different operons in the same strain. N. The structure without the circled bases was obtained for R. edaphica strains CCALA 1060 (no and both tRNA operons) and CCALA 1056 (no tRNA operon).The alternative structure with the circled bases was obtained for strains CCALA 1061 (no tRNA operon) and CCALA 1055 (no and both tRNA operons). O. Roholtiella edaphica strain CCALA 1062. P. Roholtiella mojaviensis strains CCALA 1051-52. Q. The structure without the circled bases was obtained for R. bashkiriorum strains CCALA 1057 (both tRNA operons) and CCALA 1059 (no tRNA operon). The alternative structure with the circled bases was obtained for strain CCALA 1057 (no tRNA operon). R. The structure without the circled bases was obtained for R. fluviatilis strain CCALA 1058 for the operon with both tRNA. The alternative structure with the circled bases was obtained for the operon with no tRNA. S. C. cimrmanii strain CCALA 1012 showing the
FIGURE 4 in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 4. Ultrastructure of Roholtiella, strain CCALA 1061 R. edaphica in TEM. A–B. Cross-section of the vegetative cell. C. Longitudinal section of the filament surrounded by mucilaginous sheath, new cross-wall formation marked with arrow. D–E. Detail of the cell content and arrangement of thylakoids. F. Elongated cells in a young filament, longitudinal section. Cx = carboxyzome. Scale bars = 1 μm.
FIGURE 1. A in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 1. A–AB. Roholtiella edaphica, sp. nov. A–G. Hormogonia. H–I. Young tapered filaments with conical end cell. J–Q. Calothrix-like filaments with swollen base and basal heterocyte. J. Filament with intercalary heterocyte (marked with arrow). K, N–O. Filaments false branched at the heterocyte. R. Young filaments with isopolar growth. S–W. Mature filaments. S. Tapered mature filaments with brownish colored sheath, diffluent at the ends (marked with arrow). T–U. Single false branching. X–AB. Formation and releasing of arthrospores. Strains used in this figure: CCALA 1055 = I–J, Q, AB; CCALA 1056 = D–E, U–V, Y; CCALA 1060 = L, W; CCALA 1061 = A, H, R–T, Z; CCALA 1062 = B–C, F, M, O, X; CCALA 1063 = G, K, N, P, AA. Scale bar applies to all figures, in A–Q and S–AB = 20 μm, in R = 100 μm.
FIGURE 6. A in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 6. A. Phylogenetic analysis based on 16S rDNA sequences of 142 OTUs demonstrating position of Roholtiella, gen. nov. B. Phylogenetic analysis based on concatenated 16s rDNA and 16S-ITS rDNA (operon lacking sequence for tRNAIle and tRNAAla) sequences including all members of the Roholtiella clade shown in Fig. 6A. The trees are both based on Bayesian topology and the support values are given for Bayesian posterior probabilities, maximum likelihood, and maximum parsimony (BI/ML/MP). The cut-off values for bootstrap and probability are 50 and 0.5, respectively. Clades c1-c5 represent different taxonomic groups at the family or subfamily level (see text).
FIGURE 3. A–S in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 3. A–S. Roholtiella mojaviensis, sp. nov. A. Hormogonia. B–C. Maturing hormogonia. D–H, L–M. Tapered Calothrix-like filaments. E. False branching. H. Isopolar filament with two adjacent intercalary heterocytes, arrow marks a point of subsequent breakage. I–J. Mature filaments with near-spherical cells. K. False branching. N–Q. Rows of arthrospores. R. Releasing of arthrospores from the opened end of the filament. S. Mature tapered filament with thick structured colored sheath. Strains used in this figure: CCALA 1051 = A, D–I, K–O, Q–R, CCALA 1052 = B–C, J, P, S. Scale bar applies to all figures, in A–J and L–S = 20 μm, in K = 50 μm.
FIGURE 5 in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 5. Sequence of 16S-23S ITS flanking regions of the BoxB and V3 helices for Roholtiella species. Base pair position shown above sequences, with sequences of BoxB, BoxA-D4, and V3 not shown. Variable bases shaded in gray.
FIGURE 2. A–O in Roholtiella, gen. nov. (Nostocales, Cyanobacteria)-a tapering and branching cyanobacteria of the family Nostocaceae
FIGURE 2. A–O. Roholtiella bashkiriorum, sp. nov. A. Hormogonium. B–E. Young tapered, Calothrix-like filaments. F. Branching at the heterocyte. I, K. Isopolar filaments with intercalary heterocyte(s), arrow marks a point of subsequent breakage. G–H, J, M–N. Mature filaments becoming arthrospores and being released from the opened ends. L, O. Rows of arthrospores. P–X. Roholtiella fluviatilis, sp. nov. P, S. Young tapered filaments. Q–X. Mature filaments and formation of arthrospores. R. Double false branching. U. Row of arthrospores. X. Filaments with reddish colored sheath. Strains used in this figure: CCALA 1057 = B–C, F, I–J, L, O, CCALA 1059 = A, D–E, G–H, K, M–N. CCALA 1058 = P–X. Scale bar applies to all figures, in A, B, D–H, J–P, R, T–X = 20 μm, in C, I, Q, S = 50 μm.
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