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62 results for “Zygnematophyceae”
Light micrographs on the morphological response to heat stress in the filamentous Zygnematophyceae Mougeotia sp. and Spirogyra pratensis
<p>Herein are the light micrographs of <em>Mougeotia</em> sp. and <em>Spirogyra pratensis</em> that were used to obtain the quantitative information for Figure 1 in the article "Heat stress response in the closest algal relatives of land plants reveals conserved stress signaling circuits" published in The Plant Journal, doi: 10.1111/tpj.14782</p>
Figs. 16-23 in Pseudofilamentous desmids (Zygnematophyceae) from an Amazonian floodplain lake (Macapá, AP, Brazil)
Figs. 16-23. Pseudofilamentous desmids of Curralinho Lake, Macapá, Amapá, Brazil. 16 A-B. Hyalotheca dissiliens var. dissiliens. A. fungi in the cell wall of the algae, B. detailed cells; 17 A-B. H. javanica. A. detailed pseudofilament, B. detailed cells; 18. Mateola curvata; 19 A-B. Phymatodocis nordstedtiana var. nordstedtiana f. minor. A. pseudofilament frontal view, B. pseudofilament lateral view; 20. Spondylosium desmidiiforme; 21. S. pulchrum var. pulchrum; 22. S. rectangulare var. rectangulare; 23 A-B. S. rectangulare var. goyazense, detailed cells and pseudofilaments. Scale bars = 10 µm.
Figs. 3-15 in Pseudofilamentous desmids (Zygnematophyceae) from an Amazonian floodplain lake (Macapá, AP, Brazil)
Figs. 3-15. Pseudofilamentous desmids of Curralinho Lake, Macapá, Amapá, Brazil. 3 A-C. Bambusina borreri. A, B. detailed cells; C. detailed pseudofilament; 4. B. borreri var. brasiliensis; 5 A-B. B. borreri var. majus, detailed cells and pseudofilaments; 6. Desmidium baileyi var. baileyi f. bailey; 7 A-B. D. elegans. A. detailed pseudofilament, B. detailed cell; 8 A-B. D. graciliceps var. graciliceps. A. frontal view of the pseudofilament, B. slight modification of the pseudofilament frontal view; 9. D. graciliceps var. groenbladii; 10 A-C. D. longatum. A. pseudofilament frontal view, B. formation of the elongate conjugation tube, C. zygospore; 11 A-B. D. quadratum var. quadratum. A. detailed pseudofilament, B. detailed cells; 12. D. quadratum var. constrictum; 13 A-B. Groenbladia neglecta var. neglecta. A. detailed pseudofilament, B. detailed cells; 14 A-B. G. neglecta var. elongata. A. detailed pseudofilament, B. detailed cells; 15. Haplozyga armata var. armata. Scale bars = 10 µm.
Figs. 2 A-B in Pseudofilamentous desmids (Zygnematophyceae) from an Amazonian floodplain lake (Macapá, AP, Brazil)
Figs. 2 A-B. Sampling station at Curralinho Lake. A. The dry season or less rainy period; B. The rainy season or flood period.
Figs. 1 A-C in Pseudofilamentous desmids (Zygnematophyceae) from an Amazonian floodplain lake (Macapá, AP, Brazil)
Figs. 1 A-C. Geographic localization of the Curralinho Lake, "Ressaca" area, Macapá, Amapá, Brazil. A. Localization of the Amapá state (AP) in Brazil (green color); B. Curiaú River basin, located in the Curiaú Enviroment Protection Area is highlighted in black; C. The sampling station at Curralinho Lake is a red circle.
Figure 2 in On the occurrence of Spirogyra maxima (Zygnematophyceae) in the Upper PArAná River floodplAin
Figure 2. Spirogyra maxima (Hassall) Wittrock. A. Vegetative filament; B. Vegetative cell with detail for the terminal walls; C. Detail showing the conjugation tube formed by both gametangia; D. Filaments with scaraliform conjugation. Bars = 50µm.
Figs. 25-45. 25 in Novos registros de táxons dos gêneros Euastrum Ehrenb. ex Ralfs e Micrasterias C. Agardh ex Ralfs (Zygnematophyceae, Desmidiaceae) para a Bahia e o Brasil
Figs. 25-45. 25. Euastrum gayanum var. gayanum; 26. E. gayanum var. angulatum; 27. E. gemmatum var. pinheirensis; 28. E. humbertii; 29-31. E. inerme; 32. E. inusitatum var. symmetricum; 33. E. luetkemuellerii var. luetkemuellerii; 34. E. luetkemuellerii var. carniolicum; 35. E. montanum var. montanum; 36-38. E. obesum var. obesum; 39, 40. E. pectinatum var. brasiliense; 41. E. pectinatum var. pinhareense; 42, 43. E. platycerum var. groenbladii f. goyazense; 44. E. rectangulare; 45. E. spinulosum var. grandeornatum. Barras: Figs. 25, 26, 29-31, 35, 44 = 10 µm; Figs. 28, 32-34, 36-40, 42, 43, 45 = 20 µm; Figs. 27, 41 = 30 µm.
Figs. 46-60. 46 in Novos registros de táxons dos gêneros Euastrum Ehrenb. ex Ralfs e Micrasterias C. Agardh ex Ralfs (Zygnematophyceae, Desmidiaceae) para a Bahia e o Brasil
Figs. 46-60. 46. Euastrum sublobatum var. sublobatum; 47. E. sublobatum var.dissimile; 48. E. sublobatum var. subangustatum; 49. E. subornatum var. brasiliense; 50. E. umbonatum; 51. Micrasterias arcuata var. expansa f. expansa; 52. M. denticulata var. denticulata; 53, 54. M. laticeps var. ampliata; 55, 56. M. prescottiana; 57. M. papillifera var. glabra; 58. M. radiosa var. radiosa; 59, 60. M. radiosa var. ornata f. ornata. Barras: Figs. 48, 49 = 10 µm; Figs. 46, 20 = 20 µm; Figs. 51= 40 µm; Figs. 52-60 = 50 µm.
Figs. 2-24. 2 in Novos registros de táxons dos gêneros Euastrum Ehrenb. ex Ralfs e Micrasterias C. Agardh ex Ralfs (Zygnematophyceae, Desmidiaceae) para a Bahia e o Brasil
Figs. 2-24. 2. Euastrum abruptum var. lagoense; 3. E. ansatum var. attenuatum; 4, 5. E. attenuatum var. brasiliense; 6. E. arciferum var. mediolaeve; 7, 8. E. binale var. hians; 9. E. binale var. papiliferum; 10, 11. E. cornubiense var. cornubiense; 12. E. cornubiense var. medianum; 13, 14. E. croasdaleae var. croasdaleae; 15. E. cuspidatum var. goyazense; 16, 17. E. divaricatum var. divaricatum; 18, 19. E. dubium var. dubium; 20, 21. E. eckertii; 22. E. evolutum var. perornatum; 23, 24. E. fissum var. brasiliense. Barras: Figs. 6-9, 13, 14, 16, 17 = 10 µm; Figs. 2-5, 10-12, 15, 18-24 = 20 µm.
Fig. 1 in Novos registros de táxons dos gêneros Euastrum Ehrenb. ex Ralfs e Micrasterias C. Agardh ex Ralfs (Zygnematophyceae, Desmidiaceae) para a Bahia e o Brasil
Fig. 1. Mapa de localização do Brasil e do estado da Bahia. Em destaque a Área de Proteção Ambiental Litoral Norte.
Fig. 1. Mapa com a in DeSmídiAS PSeudofilAmentoSAS (Zygnematophyceae) dA ÁreA de Proteção AmbientAl do IbirAPuitã, BiomA PAmPA, Rio GrAnde do Sul, BrASil
Fig. 1. Mapa com a localização das estações de amostragem na APA do Ibirapuitã, Rio Grande do Sul, Brasil.
Linked collectors and determiners for: Culture Collection of Microalgae and Zygnematophyceae Collection Hamburg (MZCH-SVCK).
Natural history specimen data linked to collectors and determiners held within, "Culture Collection of Microalgae and Zygnematophyceae Collection Hamburg (MZCH-SVCK)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/d44f84b0-e947-11e2-961f-00145eb45e9a">https://bionomia.net/dataset/d44f84b0-e947-11e2-961f-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/d44f84b0-e947-11e2-961f-00145eb45e9a">https://gbif.org/dataset/d44f84b0-e947-11e2-961f-00145eb45e9a</a>. Formatted as a Frictionless Data package.
Table 1 in Pseudofilamentous desmids (Zygnematophyceae) from an Amazonian floodplain lake (Macapá, AP, Brazil)
<p><b>Table 1.</b> Seasonal occurrence of pseudofilamentous desmids at Curralinho Lake (FR: relative frequency; F: frequent; LC: less common; R: rare; BP: both periods, rainy and less rainy; RP: rainy period.</p><table><tbody><tr><th><b>Taxon</b></th><th><b>F.R. (%)</b></th><th><b>Category</b></th><th><b>Seasonal occurrence</b></th></tr></tbody><tbody><tr><th><i>Bambusina borreri</i> var. <i>borreri</i></th><td>58,33</td><td>F</td><td>BP</td></tr><tr><th><i>B. borreri</i> var. <i>brasiliense</i></th><td>50</td><td>F</td><td>BP</td></tr><tr><th><i>B. borreri</i> var. <i>majus</i></th><td>50</td><td>F</td><td>BP</td></tr><tr><th><i>Desmidium baileyi</i> var. <i>baileyi</i> f. <i>baileyi</i></th><td>33.33</td><td>LC</td><td>RP</td></tr><tr><th><i>D. elegans</i></th><td>50</td><td>F</td><td>BP</td></tr><tr><th><i>D. graciliceps</i> var. <i>graciliceps</i></th><td>16.66</td><td>LC</td><td>BP</td></tr><tr><th><i>D. graciliceps</i> var. <i>groenbladii</i></th><td>25</td><td>LC</td><td>BP</td></tr><tr><th><i>D. longatum</i></th><td>33.33</td><td>LC</td><td>BP</td></tr><tr><th><i>D. quadratum</i> var. <i>quadratum</i></th><td>16.66</td><td>LC</td><td>RP</td></tr><tr><th><i>D. quadratum</i> var. <i>constrictum</i></th><td>16.66</td><td>LC</td><td>RP</td></tr><tr><th><i>Groenbladia neglecta</i> var. <i>neglecta</i></th><td>58.33</td><td>F</td><td>BP</td></tr><tr><th><i>G. neglecta</i> var. <i>elongata</i></th><td>58.33</td><td>F</td><td>BP</td></tr><tr><th><i>Haplozyga armata</i> var. <i>armata</i></th><td>41.66</td><td>F</td><td>RP</td></tr><tr><th><i>Hyalotheca dissiliens</i> var. <i>dissiliens</i></th><td>41.66</td><td>F</td><td>BP</td></tr><tr><th><i>H. javanica</i></th><td>58.33</td><td>F</td><td>BP</td></tr><tr><th><i>Mateola curvata</i></th><td>8.33</td><td>R</td><td>RP</td></tr><tr><th><i>Phymatodocis nordstedtiniana</i> var. <i>nordstedtiniana</i> f. <i>minor</i></th><td>25</td><td>LC</td><td>BP</td></tr><tr><th><i>Spondylosium desmidiiforme</i></th><td>8.33</td><td>R</td><td>RP</td></tr><tr><th><i>S. pulchrum</i> var. <i>pulchrum</i></th><td>16.66</td><td>LC</td><td>BP</td></tr><tr><th><i>S. rectangulare</i> var. <i>rectangulare</i></th><td>41.66</td><td>F</td><td>BP</td></tr><tr><th><i>S. rectangulare</i> var. <i>goyazense</i></th><td>25</td><td>LC</td><td>BP</td></tr></tbody></table>
FIGURES 19–28 in New taxa of Cosmarium and Euastrum (Zygnematophyceae) from the North Coast of Bahia, Brazil
FIGURES 19–28. Cosmarium panamense var. therezienii var. nov. (19–23): LM (20–23), SEM (19), frontal view (20–21), lateral view (22), apical view (23). Euastrum evolutum var. truncatum var. nov. (24–28): LM (25–26), SEM (24), frontal view (25–26), lateral view (27), apical view (28). Scale Bar: 10 μm.
FIGURES 6–18 in New taxa of Cosmarium and Euastrum (Zygnematophyceae) from the North Coast of Bahia, Brazil
FIGURES 6–18. Cosmarium lineatum sp. nov. (6–14): frontal view (6–12), details of the thick layer of mucilage (6), lateral view (13), apical view (14). C. margigranulatum sp. nov. (15–18): frontal view (15–16), lateral view (17), apical view (18). Scale Bar: 10 μm.
FIGURES 2–5. Line drawings. 2 in New taxa of Cosmarium and Euastrum (Zygnematophyceae) from the North Coast of Bahia, Brazil
FIGURES 2–5. Line drawings. 2. Cosmarium lineatum sp. nov. 3. C. margigranulatum sp. nov. 4. C. panamense var. therezienii var. nov. 5. Euastrum evolutum var. truncatum var. nov. Scale Bar: 10 μm.
FIGURE 1 in New taxa of Cosmarium and Euastrum (Zygnematophyceae) from the North Coast of Bahia, Brazil
FIGURE 1. Location map of Camaçari-Mirim river (P1–P2 stations) and Capivara Grande (P3–P5 stations) basin in municipality of Camaçari, Bahia, Brazil.
FIGURES 66–67 in Taxonomic notes on genera Bourrellyodesmus and Xanthidium (Zygnematophyceae) from Chapada Diamantina, Bahia, Brazil
FIGURES 66–67. Xanthidium nordstedtii (66): frontal view (SEM). Xanthidium trilobum (67): frontal view (SEM). Scale Bar: 20 μm.
FIGURES 8–30 in Taxonomic notes on genera Bourrellyodesmus and Xanthidium (Zygnematophyceae) from Chapada Diamantina, Bahia, Brazil
FIGURES 8–30. Bourrelyodesmus comperei sp. nov. (8–16): frontal view (8, 11, 13–16), lateral view (9), apical view (10, 12), morphological variation (13–16). Xanthidium concinnum var. longispinum var. nov. (17–24): frontal view (17, 20, 23–24), lateral view (18, 21), apical view (19, 22), morphological variation (23–24). Xanthidium mamillosum var. mediolaeve (25–30): frontal view (25, 28), empty cell after reproduction (26), zygospore (27), lateral view (29), apical view (30). Scale Bar: 10 μm, except Fig. 25, 28–30 (40 μm), Fig. 26–27 (50 μm, horizontal bar).
FIGURES 48–65 in Taxonomic notes on genera Bourrellyodesmus and Xanthidium (Zygnematophyceae) from Chapada Diamantina, Bahia, Brazil
FIGURES 48–65. Xanthidium trilobum (48–54): frontal view (48, 53), lateral view (49), apical view (50), detail of central ornamentation circled on semicell of Fig. 48 (51), cell–division (52), zygospore (54). Xanthidium verrucosum sp. nov. (55–65): frontal view (55, 59, 62–65), lateral view (56, 61), apical view (57–58, 60), morphological variation of the ornamentation (55, 65) and spines size (63–65). Cell formation (65), showing a tiny spine on the basal lobe (arrows). Scale Bar: 40 μm, except Fig. 54 (50 μm, horizontal bar).
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