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Author Address: State Univ. New York, Binghamton, NY 13901, USA Reference Type: Journal Article Record Number: 222 Author: Lambert, Grant R.; Carr, Noel G. Year: 1984 Title: Resistance of DNA from filamentous and unicellular cyanobacteria to restriction endonuclease cleavage Journal: Biochimica et Biophysica Acta Volume: 781 Issue: 1-2 Pages: 45-55 Accession Number: AN 1984:134496 Keywords: Anabaena; Anabaena variabilis; Anacystis nidulans; Aphanocapsa; Aphanothece halophytica; Cyanobacteria; Escherichia coli; Gloeocapsa alpicola; Gloeotrichia; Nostoc; Plectonema boryanum; Synechococcus (DNA of, methylation state of, restriction endonuclease cleavage in relation to); Methylation (of DNA, of cyanobacteria, restriction endonuclease cleavage in relation to); Deoxyribonucleic acids Role: BIOL (Biological study) (of cyanobacteria, methylation state of, restriction endonuclease cleavage in relation to) cyanobacteria DNA methylation restriction endonuclease; chromosome DNA methylation cyanobacteria Abstract: Chromosomal DNA from 9 species of filamentous cyanobacteria as diverse as Nostoc, Gloeotrichia, and Plectonema is suggested to be extensively modified (methylated) by its resistance to cleavage by a no. of restriction endonucleases. A remarkably similar pattern of DNA modification in these species contrasts with the known heterogeneity of their type II restriction endonuclease content. In particular, Nostoc PCC 73102, which lacks detectable sequence-specific endonucleases, possesses extensive DNA modification. The use of isoschizomers demonstrates the presence of a methylase in the filamentous strains analogous to the dam enzyme of Escherichia coli. As a preliminary to assessing the significance of the DNA modification, a study of susceptibility to restriction endonuclease cleavage of the genomes of 5 unicellular cyanobacteria revealed considerable variation among the different strains. The significance of the DNA modification patterns elucidated is discussed in terms of the restriction endonuclease content and cellular differentiation of the relevant cyanobacterial strains. [on SciFinder (R)] Notes: CAN 100:134496 6-2
General Biochemistry Dep. Biochem.,Univ. Liverpool,Liverpool,UK. Journal 0006-3002 written in English. 80449-04-3; 80498-17-5; 81295-09-2; 81295-12-7; 81295-18-3; 81295-22-9; 81295-24-1; 81295-25-2; 81295-28-5; 81295-32-1; 81295-33-2; 81295-34-3; 81295-38-7; 81295-42-3; 81295-43-4; 81458-03-9; 81458-04-0; 81811-55-4; 83589-01-9; 83589-02-0 Role: BIOL (Biological study) (DNA of cyanobacteria cleavage by, DNA methylation state in relation to) Reference Type: Journal Article Record Number: 223 Author: Cmiech, H. A.; Leedale, G. F.; Reynolds, C. S. Year: 1984 Title: Morphological and ultrastructural variability of planktonic Cyanophyceae in relation to seasonal periodicity. I. Gloeotrichia echinulata: Vegetative cells, polarity, heterocysts, akinetes Journal: Br. Phycol. J. Volume: 19 Issue: 3 Pages: 259-275 Accession Number: 3906585 Keywords: cell morphology; phytoplankton; seasonal variations; ultrastructure; cytology; Gloeotrichia echinulata Freshwater Q1 01223 Taxonomy and morphology Abstract: Morphology, cytology and ultrastructure of vegetative cells, filament polarity, heterocyst differentiation and akinete development in Gloeotrichia echinulata are described under natural conditions for the first time by following wild populations of the alga over two successive field seasons. The ageing sequence of vegetative cells is studied in space and time by comparing cells from one end of a filament to the other and by comparing filaments through a complete cycle of growth and development. Heterocysts are characterized by massive sheaths and absence of membranous polar elaborations; healthy gas vesicles are retained in the heterocyst, even into senescence. Akinetes develop a "spore sheath" by modification of the filament sheath. As the akinete develops, a dense stratified deposit accumulates externally to the adjacent chain of meristematic cells. These become isolated and eventually detached, presumably as a hormogonial form of perennation. (DBO) Notes: 1984 0007-1617 English Journal Article Author Address: Dep. Plant Sci., Univ. Leeds, Leeds LS2 9JT, UK Reference Type: Book Record Number: 224 Author: Chang, T. P. Year: 1984 Title: Revision of the genus Gloeotrichia (Cyanophyta) ISBN: 0022-3646 Accession Number: 909740 Keywords: plant morphology; taxonomy; Gloeotrichia Freshwater Q1 01223 Taxonomy and morphology
(ABSTRACTS. ANNUAL MEETING OF THE PHYCOLOGICAL SOCIETY OF AMERICA, 1984)., 1984, p. 26, Journal of Phycology [J. PHYCOL.], vol. 20, no. suppl. Summary only. English
Book Monograph; Conference; Summary Author Address: Inst. Radiat. Hyg., BGA, D-8042 Neuherberg, FRG Reference Type: Journal Article Record Number: 225 Author: Oliver, R. L.; Utkilen, H. C.; Walsby, A. E. Year: 1983 Title: Two mechanisms of buoyancy change in planktonic Cyanobacteria Journal: Br. Phycol. J. Volume: 18 Issue: 2 Pages: 207 Accession Number: 545671 Keywords: buoyancy; density; plant physiology gas vesicles; Cyanobacteria Freshwater Q1 01223 Taxonomy and morphology Abstract: Planktonic Cyanobacteria are able to derive buoyancy from their gas vesicles but many species are positively buoyant only at low light intensities. It has been proposed that in some, e.g., species of Anabaena , Aphanizomenon and Gloeotrichia , loss of buoyancy at high light intensity results from collapse of a proportion of their gas vesicles by increased cell turgor pressure. Indirect evidence for this mechanism has been provided by analysis of gas vesicle collapse-pressure curves. Experiments with Anabaena flos-aquae confirmed that the volume of gas vesicles collapsed accounted for the loss of buoyancey. Similar measurements of a red-coloured variety of Oscillatoria agardhii showed that gas vesicle collapse did not occur in this organism, because its gas vesicles were much stronger. This prevented gas vesicle regulation by turgor pressure. Changes in density of the Oscillatoria resulted from the dilution of gas vesicles by growth and the accumulation of cell components that contributed ballast. Notes: Winter Meeting of the British Phycological Society, Newcastle (UK), 4-7 Jan 1983 1983
English Journal Article; Conference; Summary Author Address: Univ. Bristol, Bristol, UK Reference Type: Journal Article Record Number: 227 Author: Martinez, M. R.; Dulayleong, N.; Aquino, R. F. Year: 1983 Title: Resistance of the Blue-Green-Alga Gloeotrichia-Natans to Desiccation Journal: Kalikasan-the Philippine Journal of Biology Volume: 12 Issue: 1-2 Pages: 182-186 Accession Number: ISI:A1983RB98200025 Notes: English URL: Author Address: MARTINEZ, MR, UNIV PHILIPPINES,DEPT BOT,LOS BANOS 3720,PHILIPPINES. Reference Type: Journal Article Record Number: 226 Author: Martinez, M. R.; Dulay-Leong, N.; Aquino, R. F. Year: 1983 Title: Resistance of the blue-green alga Gloeotrichia natans to desiccation Journal: Kalikasan Volume: 12 Issue: 1-2 Pages: 182-186 Accession Number: 886910 Keywords: desiccation; biological resistance; Gloeotrichia natans resistance; characterization; biological resistance Freshwater K 03005 Algae; Q1 01422 Environmental effects Notes: 1983 English
Journal Article Author Address: Dep. Bot., Univ. Philippines at Los Banos, College, Laguna 3720, Philippines Reference Type: Journal Article Record Number: 228 Author: Leeuwangh, P.; Kappers, F. I.; Dekker, M.; Koerselman, W. Year: 1983 Title: Toxicity of cyanobacteria in Dutch lakes and reservoirs Journal: Aquatic Toxicology Volume: 4 Issue: 1 Pages: 63-72 Accession Number: AN 1983:502015 Keywords: Toxins Role: BIOL (Biological study) (from cyanobacteria in waterblooms in lakes and reservoirs of Holland); Gloeotrichia echinulata; Microcystis aeruginosa; Oscillatoria agardhii (toxins from waterblooms of, in lakes and reservoirs of Holland); Cyanobacteria (toxins from, in lakes and reservoirs of Holland) cyanobacteria waterbloom toxin; Microcystis waterbloom toxin; Oscillatoria waterbloom toxin; Gloeotrichia waterbloom toxin Abstract: In the summer of 1980, waterblooms and scums of Microcystis aeruginosa, Oscillatoria agardhii, and Gloeotrichia echinulata were collected at 11 locations. Acute toxicity of sonificated cyanobacterial suspensions was tested by i.p. injection in mice. The results indicate than in 9 of 10 locations, M. aeruginosa hepatotoxin(s) were present. These cyanobacterial endotoxin(s), the so-called Fast-Death Factor (FDF) or mycrocystin, caused death in mice within 3 h. In most samples, assocd. bacterial toxin(s), the so-called Slow-Death Factor (SDF), causing death within 4 to 48 h were possibly involved in SDF intoxication symptoms and mortality. Suspensions of O. agardhii were also found to be lethal. Symptoms and mortality are thought to be attributed to >=2 toxic factors, one resembling FDF, the other possibly resulting from assocg. bacteria. Administration of G. echinulata suspensions did not kill mice but produced symptoms of illness. The symptoms were not consistent with those obsd. with Microcystis FDF or SDF. [on SciFinder (R)] Notes: CAN 99:102015 10-1
Microbial Biochemistry Dep. Vet. Pharmacol. Pharm. Toxicol.,Univ. Utrecht,Utrecht,Neth. Journal 0166-445X written in English. Reference Type: Journal Article Record Number: 230 Author: Chang, T. P. Year: 1983 Title: The Morphology of Gloeotrichia-Echinulata (Smith) Richter in Axenic Culture Journal: Schweizerische Zeitschrift Fur Hydrologie-Swiss Journal of Hydrology Volume: 45 Issue: 1 Pages: 296-297 Accession Number: ISI:A1983RQ96900022 Notes: German URL: Author Address: BUNDESGESUNDHEITSAMT,INST STRAHLENHYG,D-8042 NEUHERBERG,FED REP GER. Reference Type: Journal Article Record Number: 229 Author: Chang, T. P. Year: 1983 Title: Interaction of water-blooming cyanophyte Gloeotrichia echinulata and its endophytic blue-green alga Pseudanabaena catenata Journal: Archiv fur Hydrobiologie. Stuttgart Volume: 97 Issue: 3 Pages: 320-328 Alternate Journal: Arch. Hydrobiol. Accession Number: 655272 Keywords: algal blooms; seasonality; endoparasitism; Pseudanabaena catenata Gloetricha echinulata; Germany, Fed. Rep., Schleswig-Holstein, Great Ploener L. Freshwater Q1 01484 Species interactions: parasites and diseases
0003-9136 English Journal Article Author Address: Inst. Strahlenhyg. Bundesgesundheitsamtes, Ingolstaedter Landst. 1, 8042 Neuherberg, FRG Reference Type: Journal Article Record Number: 17 Author: Cattaneo, A. Year: 1983 Title: Grazing on Epiphytes Journal: Limnology and Oceanography Volume: 28 Issue: 1 Pages: 124-132 Date: Jan. Abstract: A correlation was found between the seasonal epiphyte cycle in Lake Memphremagog (Quebec-Vermont), with a maximum in mid-June, and the abundance of grazers (mainly oligochaetes and chironomids). Evidence for a cause and effect relationship was provided by exclosure-enclosure experiments. When grazers were excluded epiphyte biomass did not decline as it did in the lake. Addition of grazers to a dense epiphyte over resulted in a decline qualitatively and quantitatively similar to that in the lake. Grazing pressure, calculated from general empirical equations for aquatic deposit feeders, was of the required order of magnitude to explain the decline in epiphyte biomass. Because similar seasonal epiphyte cycles have been described elsewhere these findings should have a wider relevance. Notes: FLA 00243590
American Society of Limnology and Oceanography Copyright 1983 American Society of Limnology and Oceanography URL: http://links.jstor.org/sici?sici=0024-3590%28198301%2928%3A1%3C124%3AGOE%3E2.0.CO%3B2-A Reference Type: Journal Article Record Number: 231 Author: Yallop, M. L.; Whitton, B. A. Year: 1982 Title: Physiological Ecology of Blue-Green Algae in Deepwater Rice/Fields of Bangladesh Journal: Br. Phycol. J. Volume: 17 Issue: 2 Pages: 241 Accession Number: 267381 Keywords: ecophysiology; nitrogen fixation; light intensity; rice fields; Cyanophyta; Aulosira; Gloeotrichia; Spirogyra; Draparnaldia; Bangladesh Freshwater Q1 01461 Plankton
1982
Summary only. Journal Article; Conference; Summary Author Address: Univ. Durham, Durham, UK Reference Type: Journal Article Record Number: 97 Author: Stauffer, Robert E. Year: 1982 Title: Wind Stress Effects on Chlorophyll Distribution in Stratified Eutrophic Lakes Journal: Limnology and Oceanography Volume: 27 Issue: 1 Pages: 66-74 Date: Jan. Abstract: The spatial distribution of Chl a in eutrophic Lakes Mendota and Delavan, Wisconsin, were studied during the 1971-1972 stratified seasons. A surface bloom was present on only 6 of 64 sampling dates, always associated with calm, sunny weather following cold fronts. A subsurface Chl a maximum was often observed at 3-5 m, associated with a transient upper breeze thermocline. Analysis of distributed-lag antecedent wind stress showed that stress during the 6 h immediately before sampling predicts lateral gradients in chlorophyll standing crop (CSC) unless slight recent stress follows both high stress and an important directional shift. The short response time agrees with fetch transit times for the surface wind drift current and lag times involving the epilimnetic set-up. Increasing the average CSC increases its lateral response to wind stress, possibly because large standing crops tend to be buoyant and hence readily advected by the wind. Notes: FLA 00243590
American Society of Limnology and Oceanography Copyright 1982 American Society of Limnology and Oceanography URL: http://links.jstor.org/sici?sici=0024-3590%28198201%2927%3A1%3C66%3AWSEOCD%3E2.0.CO%3B2-I Reference Type: Journal Article Record Number: 232 Author: Kostyaev, V. Ya Year: 1982 Title: Molecular nitrogen fixation by an epiphyte complex of aquatic plants in Latvian lakes Journal: Mikrobiologiya Volume: 51 Issue: 6 Pages: 1015-18 Accession Number: AN 1983:124866 Keywords: Cyanobacteria; Gloeotrichia pisum; Gloetrichia pisum (nitrogen fixation by aquatic plants of Latvian lakes in relation to); Plant (aquatic, nitrogen fixation by, in Latvian lakes, cyanobacteria role in); Waters (lake, nitrogen fixation by aquatic plants of, of Lativa, cyanobacteria role in) nitrogen fixation aq plant cyanobacteria Abstract: The N fixation by macrophytes from various lakes of Latvia was strongly correlated with the abundance in them of cyanobacteria. The Gleotricha pisum colonies were not assocd. with any specific plant of the coastal zones of the lakes. N fixation by plants without cyanobacteria ranged on av. from 1.54 to 3.3 and by those with cyanobacteria from 23.6 to 65.87 mg N/g/day; thus the cyanobacteria presence increased the N fixation >=20-fold. The data can be used for calcg. the N fixation in lakes; for that purpose it is necessary to know not only the area occupied by macrophytes but also the area occupied by cyanobacteria-inhabiting plants. [on SciFinder (R)] Notes: CAN 98:124866 19-7
Fertilizers, Soils, and Plant Nutrition Inst. Biol. Vnutr. Vod,Borok,USSR. Journal 0026-3656 written in Russian. Reference Type: Journal Article Record Number: 233 Author: Kappers, F. I. Year: 1982 Title: Toxic cyanobacteria in the Netherlands Journal: Hydrobiol. Bull. Volume: 16 Issue: 2-3 Pages: 291 Accession Number: 679910 Keywords: toxicity; biological poisons; algal blooms; Microcystis aeruginosa; Oscillatoria agardhii; Gloeotrichia echinulata; Netherlands Freshwater Q1 01524 Public health, medicines, dangerous organisms
Summary only. English Journal Article; Summary Author Address: Natl. Inst. Water Supply, Postbus 150, 2260 AD Leidschendam, Netherlands Reference Type: Journal Article Record Number: 234 Author: Huang, Chi Min; Chang, Chin Hua; Wang, Chwan Chau Year: 1982 Title: Effect of soil inoculant application on sugarcane growth Journal: Taiwan Tangye Yanjiuso Yanjiu Huibao Volume: 98 Pages: 15-24 Accession Number: AN 1983:538761 Keywords: Nitrogen fixation (by cyanobacteria from soil inoculant, sugarcane growth in relation to); Anabaena; Gloeocapsa; Gloeotrichia; Hapalosiphon; Merismopedia; Nostoc (nitrogen fixation by, sugarcane response to soil inoculant in relation to); Sugarcane (soil inoculation with nitrogen-fixing cyanobacteria effect on); Cyanobacteria (nitrogen-fixing, soil inoculation with, sugarcane response to) cyanobacteria soil inoculation sugarcane; nitrogen fixation cyanobacteria sugarcane Directory: chemistry chemistry -> Summer 2015 Research Opportunities for Chemistry & Biochemistry Undergraduates chemistry -> Application for Summer Undergraduate Research Program nsf research Experiences for Undergraduates (reu) – 2015 Please Print Clearly or Type chemistry -> Application for Summer Undergraduate Research Program nsf research Experiences for Undergraduates (reu) – 2016 Please Print Clearly or Type chemistry -> Summer 2014 Research Opportunities for Chemistry & Biochemistry Undergraduates chemistry -> Summer 2016 Research Opportunities for Chemistry & Biochemistry Undergraduates chemistry -> Cloud Point Extraction Methodology for Separation and Microamounts Determination of Lead chemistry -> Spring Hill College List of Nearby Restaurant Options Atlanta Bread Company chemistry -> Where the heck is Fernando de Noronha? chemistry -> Topics 6 & 16: Kinetics 1 Collision theory and rates of reaction Download 1.4 Mb. Share with your friends:
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