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19 results for “Ulvales”
Figure 4 in Surveying seaweeds from the Ulvales and Fucales in the world's most frequently used artificial waterway, the Kiel Canal
Figure 4: Number of branches versus thallus height for Ulva intestinalis (A) and Ulva linza (B) collected in the Kiel Canal. Numbers indicate sampling sites and lines connect data in the sequence of sites along the canal (sites 1–16 for U. intestinalis and 9–16 for U. linza; compare Figure 1C).
Figure 3 in Surveying seaweeds from the Ulvales and Fucales in the world's most frequently used artificial waterway, the Kiel Canal
Figure 3: Morphology of material genetically identified as Ulva intestinalis collected from the Kiel Canal. Sampling sites with salinity recorded during collection are indicated. (A–B) Display the typical unbranched morphotype of U. intestinalis, whereas some specimens only exhibited branches at the thallus base (C–D); i is a close-up of thallus base of D. (E–F) Display branched forms of U. intestinalis with reduced thallus size encountered at low salinity sampling sites.
Figure 1 in Surveying seaweeds from the Ulvales and Fucales in the world's most frequently used artificial waterway, the Kiel Canal
Figure 1: Map of the study area and distribution of chemical parameters and detected species. (A) Map of the Kiel Canal (black line) in Northern Germany with location of sampling sites (arrowheads). (B) Salinity, dissolved inorganic nitrogen (DIN) and phosphate at the sampling sites 1–16 and the reference sites C1–C3 outside the canal, where only water parameters were measured. (C) Spatial distribution of Ulvales and Fucus species within the Kiel Canal. Arrows indicate major inflows of freshwater, names refer to larger towns or regions to facilitate orientation.
Figure 2 in Surveying seaweeds from the Ulvales and Fucales in the world's most frequently used artificial waterway, the Kiel Canal
Figure 2: Maximum likelihood tree inferred from tufA sequences, representing Ulvales species and their respective morphotypes, present in the Kiel Canal. Numbers at nodes refer to bootstrap values>70. Branch lengths are drawn proportionally to the amount of sequence change and GenBank accession numbers are given for all included samples. Clades containing specimens investigated within this study are highlighted in gray. Sample sites and their recorded salinity within the Kiel Canal are indicated. Samples marked with a solid circle are of unbranched morphology, those labeled with an asterisk are branched.
Figure 5 in Surveying seaweeds from the Ulvales and Fucales in the world's most frequently used artificial waterway, the Kiel Canal
Figure 5: Morphology of material genetically identified as Ulva linza collected from the Kiel Canal. Sampling sites with salinity recorded during collection are indicated. Branched and unbranched morphotypes of U. linza observed at two sampling sites with relatively high (A–B) and low (C–D) salinity are shown.
Fig. 6 in New records of two ulvophycean freshwater species, Lithotrichon pulchrum (Ulvales, Ulvophyceae) and Tupiella speciosa (Ulotrichales, Ulvophyceae)
Fig. 6. Molecular phylogeny of Ulotrichales. The phylogenetic trees shown were inferred using the maximum likelihood method based on the SSU and ITS rDNA data sets (2355 aligned positions of 31 taxa) using RAxML. The Bayesian posterior probability (pp), maximum likelihood (ML) bootstrap, maximum parsimony (MP), and distance values (NJ) are shown above or below the branches. The bold branches indicate strongly supported values (pp = 1.00 and ML, MP, and NJ = 100%). Scale bar indicates the number of substitutions/sites.
Fig. 5 in New records of two ulvophycean freshwater species, Lithotrichon pulchrum (Ulvales, Ulvophyceae) and Tupiella speciosa (Ulotrichales, Ulvophyceae)
Fig. 5. Molecular phylogeny of Ulvales. The phylogenetic trees shown were inferred using the maximum likelihood method based on the SSU and ITS rDNA data sets (2554 aligned positions of 29 taxa) using RAxML. The Bayesian posterior probability (pp), maximum likelihood (ML) bootstrap, maximum parsimony (MP), and distance values (NJ) are shown above or below the branches. The bold branches indicate strongly supported values (pp = 1.00 and ML, MP, and NJ = 100%). Scale bar indicates the number of substitutions/sites.
Fig. 2 in New records of two ulvophycean freshwater species, Lithotrichon pulchrum (Ulvales, Ulvophyceae) and Tupiella speciosa (Ulotrichales, Ulvophyceae)
Fig. 2. Ultrastructure of Lithotrichon pulchrum. A. Vegetative cell; B. Pyrenoid penetrated by thylakoid membrane (arrow); C. Mitochondrion; D. Golgi body; E. Flament cell with one pyrenoid; F. Flament cell with two pyrenoids. Cp, chloroplast; PCW, primary cell wall; G, Golgi body; Mt, mitochondrion; N, nucleus; Py, pyrenoid; S, starch; SCW, secondary cell wall. Scale bars: A = 1 μm, B-D = 0.5 μm, E, F = 2 μm.
Fig. 3 in New records of two ulvophycean freshwater species, Lithotrichon pulchrum (Ulvales, Ulvophyceae) and Tupiella speciosa (Ulotrichales, Ulvophyceae)
Fig. 3. Morphology of Tupiella speciosa Songchonmot180226S. A. Vegetative cell; B. Young filament; C, D. Thick cell wall-enveloped akinetes including 1-4 cells. CW, cell wall; Py, pyrenoid. Scale bars: 10 μm.
Fig. 1 in New records of two ulvophycean freshwater species, Lithotrichon pulchrum (Ulvales, Ulvophyceae) and Tupiella speciosa (Ulotrichales, Ulvophyceae)
Fig. 1. Morphology of Lithotrichon pulchrum Samcheokhang190409G. A. Vegetative cells; B. The erect system formed by a short filament cell (arrow); C. Filament cells; D. Bilaterally branched from. Py, pyrenoid. Scale bars: 10 μm.
Fig. 4 in New records of two ulvophycean freshwater species, Lithotrichon pulchrum (Ulvales, Ulvophyceae) and Tupiella speciosa (Ulotrichales, Ulvophyceae)
Fig. 4. Ultrastructure of Tupiella speciosa. A. Vegetative cell; B. Pyrenoid penetrated by thylakoid membrane (arrow); C. Mitochondrion; D. Golgi body; E. Akinete including two cells; F. Flament cell with one pyrenoid; G. Flament cell with four pyrenoids. Cp, chloroplast; CW, cell wall; G, Golgi body; Mt, mitochondrion; N, nucleus; Py, pyrenoid; S, starch. Scale bars: A, E-G = 2 μm, B = 1 μm, C, D = 0.5 μm.
FIG. 1 in Rindifilum ramosum gen. nov., sp. nov., a new freshwater genus within the Ulvales (Ulvophyceae, Chlorophyta)
FIG. 1. — The phylogenetic position of Rindifilum ramosum gen. nov., sp. nov., obtained by a Bayesian inference analysis of the concatenated and partitioned 18S rDNA, tufA, and rbcL dataset. Asterisks indicate the highest support values obtained by all three inference methods. GenBank accession numbers for the concatenated sequences (18S rDNA, tufA and rbcL, respectively) accompany each species name. Newly obtained sequences are given in bold. Scale bar shows the estimated number of substitutions per site.
FIG. 2 in Rindifilum ramosum gen. nov., sp. nov., a new freshwater genus within the Ulvales (Ulvophyceae, Chlorophyta)
FIG. 2. — Light microscopic morphology of Rindifilum ramosum gen. nov., sp. nov. A-Q, SAG 2052; R, S, SAG 2039. Scale bars: 5 μm.
FIG. 5 in Ulva L. (Ulvales, Chlorophyta) from Manawatāwhi/ Three Kings Islands, New Zealand: Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. and records of two nonnative species, U. compressa and U. rigida
FIG. 5. — Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov.: A, surface view showing rhizoids extending from cells; B, rhizoidal clump from lower surface of thallus. Scale bars: A, 20 µm; B, 50 µm
FIG. 3 in Ulva L. (Ulvales, Chlorophyta) from Manawatāwhi/ Three Kings Islands, New Zealand: Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. and records of two nonnative species, U. compressa and U. rigida
FIG. 3. — Phylogenetic tree inferred by Maximum Likelihood analysis from partial rbcL sequences of Ulvacean species. Numbers above lines indicate ML bootstrap support values (BS) and Bayesian posterior probabilities (PP). BS values below 60% and PP values below 0.9 are not shown. Species names (reflecting current nomenclature; Guiry & Guiry 2021) are followed by GenBank/ENA accession numbers and origin of the sample (see Table 2 for references). New sequences are set in bold.
FIG. 4. — A in Ulva L. (Ulvales, Chlorophyta) from Manawatāwhi/ Three Kings Islands, New Zealand: Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. and records of two nonnative species, U. compressa and U. rigida
FIG. 4. — A, Holotype Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov.; B, section through distromatic blade; C, section in region of rhizodal clump showing deeper adaxial cell layer and rhizoids arising from cells of both thallus layers. Scale bars: A, 2 cm; B, C, 50 µm
FIG. 3 in Rindifilum ramosum gen. nov., sp. nov., a new freshwater genus within the Ulvales (Ulvophyceae, Chlorophyta)
FIG. 3. — Rindifilum ramosum gen. nov., sp. nov. (SAG 2052). Scale bar: 5 μm.
FIG. 1 in Ulva L. (Ulvales, Chlorophyta) from Manawatāwhi/ Three Kings Islands, New Zealand: Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. and records of two nonnative species, U. compressa and U. rigida
FIG. 1. — Map of northern New Zealand showing the position of Manawatāwhi/Three Kings Islands.
FIG. 2 in Ulva L. (Ulvales, Chlorophyta) from Manawatāwhi/ Three Kings Islands, New Zealand: Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov. and records of two nonnative species, U. compressa and U. rigida
FIG. 2. — Subtidal patches of Ulva piritoka Ngāti Kuri, Heesch & W.A.Nelson, sp. nov.
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