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31 results for “Oculatellaceae”
FIGURE 16. Drouetiella hepatica. A in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 16. Drouetiella hepatica. A. Heterogeneity in trichome width between young and mature filaments, young filaments isodiametric to slightly cylindrical. B–C. False-branching very rare in young trichomes, only single false-branches observered. D–F. Sheath sometimes elongated and lamellate as in (E). G. Rapid cell division in meristematic zones sometimes caused twisted trichomes. H. Frequent necridia occur along actively dividing trichomes. Scale bar 10μm in 1000X magnification.
FIGURE 23. Kaiparowitsia implicata.A in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 23. Kaiparowitsia implicata.A. Fasicles of trichomes without common sheath. B–C. Tightly entangled filaments forming compact coils. D. Disintegration of trichomes within common sheath occasionally observed. E–F. Nodule formation common. F–H. Distinctively longer than width common cells and crooked, Arthronema-like involution from cells along trichomes. G–I. Multiple trichomes entangled within one common sheath also observed. Scale bar 10μm in 1000X magnification.
FIGURE 13. Pegethrix indistincta. A–B in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 13. Pegethrix indistincta. A–B. Double and single-false branching filaments. C. Multiple trichomes coiling in one common sheath. D. Thick and firm sheath observed in mature trichomes. E–F. Hormogonia released from bundles of trichome undergoing rapid disintegration (note necridia). Scale bar 10μm in 1000X magnification.
FIGURE 10. Pegethrix bostrychoides. A. Nodule formation. B in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 10. Pegethrix bostrychoides. A. Nodule formation. B. Existence of multiple trichomes within common sheath. C–G. Variation in the degree of filament coiling, from flexuous to spiral coils. H–I. Double false-branches and single false-branches. J–K. Sheath tightly embraces trichome or expands from trichome. L. Heterogeneity in cell shape and trichome width between young and mature trichomes. Meristematic zone of cell division shown on mature trichome. Scale bar 10μm in 1000X magnification.
FIGURE 19. Cartusia fontana. A in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 19. Cartusia fontana. A. Fasicle of trichomes within one common sheath. B. Expanded and lamellate sheath. C. Variation in width between young and mature trichome, with cell division in meristematic zones. D. Meristematic zone of cell division in mature trichomes, with necridia; necridia in both young and senescing trichomes, filaments in mature trichomes occasionally with thick, slightly layered sheath. Scale bar 10μm in 1000X magnification.
FIGURE 9. V3 in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 9. V3 helices of species described in Oculatellaceae. All species described have this structure. The V3 helix of Cartusia aeruginosa is missing because we do not have the full length of its ITS region.
FIGURE 15. Drouetiella fasciculata. A. Fasiculated filaments with individual sheath. B in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 15. Drouetiella fasciculata. A. Fasiculated filaments with individual sheath. B. Mature trichomes with one to two large central granules. B–C. Different coiling patterns of filaments. D. Hormogonia. E–G. Cells barrel-shaped, not constricted and separated by somewhat translucent cross-walls. Scale bar 10μm in 400X (A) and 1000X magnification (B–J).
FIGURE 7. Box B in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 7. Box B helices of species described in Oculatellaceae. The structures of genera described previously in other publications (Oculatella, Thermoleptolyngbya, Timaviella) or in publications under provision (Trichotorquatus) are not shown here.
FIGURE 3. 16S in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 3. 16S rRNA phylogeny of the filamentous group of Synechococcales cyanobacteria, showing Prochlorotrichaceae, Trichocoleaceae and Pseudanabaenaceae. Black polygons represent genera that have been described, with length correspond to the distance from the most basal OTU to the most diverged OTU of the genus. Posterior probabilities for the BI analysis are given above the nodes. Taxa which we consider to be incorrectly named in NCBI or requiring revisionary work are in quotation marks.
FIGURE 1. 16S in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 1. 16S rRNA Bayesian Inference analysis of the filamentous group of Synechococcales cyanobacteria, showing Leptolyngbyaceae. Black polygons represent genera that have been described or are named in provision (e.g., "Myxacorys"), with length corresponding to the distance from the most basal OTU to the most diverged OTU of the genus. Posterior probabilities for the BI analysis are given above the nodes. Taxa which we consider to be incorrectly named in NCBI or requiring revisionary work are in quotation marks.
FIGURE 4. rpoC1 in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 4. rpoC1 Bayesian Inference analysis of the filamentous Synechococcales cyanobacteria with representatives of family Leptolyngbyaceae, Oculatellaceae. Prochlorotrichaceae and Pseudanabaenaceae. OTUs demonstrated to be within specific families defined in 16S rRNA phylogenies are anotated accordingly. The Oculatellaceae (top clade) has the same composition as the family in the 16S rRNA gene phylogeny, except for Tildeniella nuda, which is in the Leptolyngbyaceae clade in this analysis. Several OTUs previously listed under Leptolyngbyaceae and Prochlorotrichaceae have changed their positions with respect to the 16S rRNA gene phylogeny. Taxa which we consider to be incorrectly named in NCBI or requiring revisionary work are in quotation marks.
FIGURE 5 in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 5. Molecular diagnosis of the families proposed or described in this study. Only helices 23 and 27 are shown as they are considered to be the most straightforward and useful for family distinction.
FIGURE 12. Pegethrix convoluta. A. Consecutively false-branching filaments. B–C in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 12. Pegethrix convoluta. A. Consecutively false-branching filaments. B–C. Compact nodules formed by rapid cell division in local region of trichomes. D–E. Sheath rarely irregular and stratified, more commonly tightly attached to trichomes. F. Necridia abundant in mature trichomes. Scale bar 10μm in 1000X magnification.
FIGURE 14. Drouetiella lurida. A in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 14. Drouetiella lurida. A. Olive-greenish trichome coloration of mature culture. B. Liver-brown filament coloration in healthy culture. C–D. Filaments with thin, attached sheath, indistinct with no diacritical characters. Scale bar 10μm in 400X (A) and 1000X magnification (B–D).
FIGURE 8. V2 in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 8. V2 helices of species described in Oculatellaceae. Several species do not have this structure, including Pegethrix convoluta, P. indistincta, Antartic Pegethrix species, Cartusia fontana¸ Kaiparowitsia implicata.
FIGURE 18. Timaviella radians. A–B in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 18. Timaviella radians. A–B. Rapid cell division at apical region commonly observed, forming a "basal" part to filament. C. Radial formation of colonies based on trichomes radiating from an attachment point. D. False-branches in singles or in pairs, consecutive, sometimes geminate branching, E. Compact rope-like coils. F. Rapid cell division causing twists and turn of trichome within sheath. Mature filaments isodiametric, trichomes constricted at distinct cross-walls, with one large central granule dominates cytoplasm. Scale bar 10μm in 400X (C) and 1000X magnification (A–B, D–F).
FIGURE 6. D1-D1 in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 6. D1-D1' stems of species described in Oculatellaceae. The stem structures of genera described previously in other publications (Oculatella, Thermoleptolyngbya, Timaviella) or in publications under provision (Trichotorquatus) are not shown here.
FIGURE 2. 16S in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 2. 16S rRNA Bayesian Inference analysis of the filamentous group of Synechococcales cyanobacteria, showing Oculatellaceae. Black polygons represent genera that have been validly described or are named in provision (e.g., "Trichotorquatus"), with length corresponding to the distance from the most basal OTU to the most diverged OTU of the genus. Posterior probabilities for the BI analysis are given above the nodes. Taxa which we consider to be incorrectly named in NCBI or requiring revisionary work are in quotation marks.
FIGURE 17. Timaviella obliquedivisa. A–B. Slightly tapering filaments. C–E in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 17. Timaviella obliquedivisa. A–B. Slightly tapering filaments. C–E. Consecutive double and single false-branches in filaments resulting in branch-like structures. F–G. Cell division in oblique angles, causing geminate, knot-like branching or resembling to truebranching. H. Compact coiling of trichomes within sheath. Scale bar 10μm in 1000X magnification.
FIGURE 22. Komarkovaea angustata. A–B in Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species
FIGURE 22. Komarkovaea angustata. A–B. Variation in trichome width between mature and young filament or hormogonia. C. Variation in cell shapes between young and mature trichomes: isodiametric, slightly longer than width or barrel-shaped, and abundance of necridia in mature trichomes. D. Rapid regional cell division along trichomes resulting in basal and apical parts of filaments. E. Reddish small granules occassionaly observed on cells. Scale bar 10μm in 1000X magnification.
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