Reference Type: Journal Article Record Number: 113 Author
Notes: FLA 0028646x Cambridge University Press Copyright 1990 New Phytologist Trust URL
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Notes: FLA 0028646x
Cambridge University Press Copyright 1990 New Phytologist Trust URL: http://links.jstor.org/sici?sici=0028-646X%28199009%29116%3A1%3C177%3ATPROTK%3E2.0.CO%3B2-W Reference Type: Journal Article Record Number: 195 Author: Mishra, A. K.; Tiwari, D. N. Year: 1989 Title: Isolation and characterization of pigment mutants from a filamentous cyanobacterium Journal: Folia Microbiologica (Prague, Czech Republic) Volume: 34 Issue: 3 Pages: 243-51 Accession Number: AN 1989:611758 Keywords: Pigments (of Gloeotrichia ghosei mutants); Phycocyanins; Phycoerythrins Role: BIOL (Biological study) (of Gloeotrichia ghosei mutants); Gloeotrichia ghosei (pigmentation mutants of, isolation and characterization of) Gloeotrichia pigmentation mutant Abstract: Five strains of a pigment mutant were isolated following UV irradn. and N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) mutagenesis from a non-nitrogen fixing mutant of the cyanobacterium Gloeotrichia ghosei. Two of them (B-1 and V-1) were isolated by UV mutagenesis and the other three (B-3, B-7, and Br-6) by MNNG mutagenesis. Among the five strains, cultures of three strains (B-1, B-3, and B-7) were typically blue-green in color. Strain V-1 was violet-pink and Br-6 was brownish in color. The parent strain of these mutants was dark-blue in color. Blue-green mutants showed a predominance of phycocyanin (610 nm), whereas violet-pink and brown strains showed a predominance of phycoerythrin (550 nm) in the absorption spectra of water-sol. pigments. In contrast to these strains, there parent strain showed both absorption peaks (at 550 and 610 nm). The occurrence of stable pigment mutants of a filamentous cyanobacterium indicates that the synthesis of water-sol. pigments is genetically controlled in these mutant strains. [on SciFinder (R)] Notes: CAN 111:211758 10-4
Microbial Biochemistry Cent. Adv. Study Bot.,Banaras Hindu Univ.,Varanasi,India. Journal 0015-5632 written in English. Reference Type: Journal Article Record Number: 194 Author: Mishra, A. K.; Tiwari, D. N. Year: 1989 Title: Nitrogen Nutrition and Developmental Behavior of Some Non-Nitrogen-Fixing Mutants of Cyanobacterium Gloeotrichia-Ghosei Journal: Annales Des Sciences Naturelles-Botanique Et Biologie Vegetale Volume: 10 Issue: 4 Pages: 149-155 Accession Number: ISI:A1989DP90500001 Notes: Cited References: CARR NG, 1973, BIOL BLUE GREEN ALGA, P39 CURRIER TC, 1977, J BACTERIOL, V129, P1545 FAY P, 1968, NATURE, V220, P810 FOGG FE, 1944, NEW PHYTOL, V43, P164 GOTTO JW, 1979, J BACTERIOL, V140, P327 HASELKORN R, 1978, ANNU REV PLANT PHYS, V29, P319 HAURY JF, 1978, J BACTERIOL, V136, P688 HERBERT D, 1971, METHODS MICROBIOLO B, V5, P209 KRATZ WA, 1955, AM J BOT, V42, P282 KULASOORIYA SA, 1972, P ROY SOC B, V181, P199 MISHRA AK, 1986, NEW PHYTOL, V103, P69 MYERS J, 1955, J GEN PHYSIOL, V39, P11 NEILSON A, 1971, ARCH MIKROBIOL, V76, P139 OGAWA RE, 1969, LIMNOL OCEANOGR, V14, P342 RIPPKA R, 1978, J GEN MICROBIOL, V105, P83 SAFFERMAN RS, 1964, J BACTERIOL, V88, P771 SINHA BD, 1973, ANN BOT, V37, P673 SYRETT PJ, 1972, PHYSL BIOCH ALGAE, P171 TIWARI DN, 1977, BEITR BIOL PFLANZ, V53, P177 WILCOX M, 1975, ARCH MICROBIOL, V103, P219 WOLK CP, 1980, NITROGEN FIXATION, V2, P279 YADAVA PK, 1979, MOL GEN GENET, V173, P153 English
URL: Author Address: BANARAS HINDU UNIV,CTR ADV STUDY BOT,VARANASI 221005,UTTAR PRADESH,INDIA. Reference Type: Journal Article Record Number: 196 Author: Lennihan, R.; Dickson, L. G. Year: 1989 Title: Distribution, abundance and physiological aspects of N. commune in a high arctic ecosystem Journal: Journal of Phycology Volume: 25 Issue: 2 suppl. Pages: 16 Alternate Journal: J. Phycol. Accession Number: 2130136 Keywords: nitrogen fixation; primary production; soils; algae; abundance; Nostoc commune Arctic zone Freshwater Q1 01482 Ecosystems and energetics
1989
0022-3646 Summary only. English Journal Article; Conference; Summary Author Address: Dep. Bot., Univ. Washington, Seattle, WA 98195, USA Reference Type: Journal Article Record Number: 198 Author: Lebedev, N. N.; Chan Van, Ni; Krasnovskii, A. A. Year: 1989 Title: Reversible reorganization of the chlorophyll-protein complexes of photosystem II in cyanobacterium cells in the dark Journal: FEBS Letters Volume: 247 Issue: 1 Pages: 97-100 Accession Number: AN 1989:209496 Keywords: Gloeotrichia raciborski (chlorophyll-protein complexes of photosystem II of, reversible reorganization of); Photosynthetic systems (II, chlorophyll-protein complexes of, reversible organization of, Gloeotrichia raciborski); Chlorophylls Role: PROC (Process) (complexes, with proteins, of photosystem II, of Gloeotrichia raciborski, reversible reorganization of) Gloeotrichia photosystem II chlorophyll protein complex Abstract: A new emission band at 673 nm was detected in the low-temp. fluorescence spectrum of dark-adapted cyanobacteria Gloeotrichia raciborski.,. The excitation spectrum of this band was close to the absorbance of the isolated reaction center of photosystem (PS) II. The relative intensities of the bands of chlorophyll and pheophytin in this spectrum showed the relative concns. of these pigments to be about 3:1. The intensity of the band increased with darkness (half-time about 2 h). Under illumination the band rapidly disappeared (half-time about 60 s). The appearance of a 673 nm band in the dark and its disappearance in the light were accompanied by a decrease, and, resp., an increase in the fluorescence of the PS II band at 697 nm. [on SciFinder (R)] Notes: CAN 110:209496 11-6
Plant Biochemistry A. N. Bakh Inst. Biochem.,Moscow,USSR. Journal 0014-5793 written in English. Reference Type: Journal Article Record Number: 197 Author: Lebedev, N. N.; Ni, Chanvan; Krasnovskii, A. A. Year: 1989 Title: Short-wave fluorescence of photosystem II in cyanobacteria cells Journal: Doklady Akademii Nauk SSSR Volume: 304 Issue: 6 Pages: 1482-5 [Biophys ] Accession Number: AN 1989:189686 Keywords: Gloeotrichia raciborskii (D1 protein dark formation and light-dependent transformation in); Fluorescence (of photosystem II in cyanobacteria, D1 protein dark formation and light-dependent transformation in response to); Proteins Role: BIOL (Biological study) (QB, formation and transformation of, in cyanobacteria); Proteins Role: FORM (Formation, nonpreparative) (photosystem II-assocd., 47,000-mol.-wt., formation of, from D1 protein, in cyanobacteria) cyanobacteria protein D1 formation transformation; QB photosystem II antenna protein Gloeotrichia Abstract: Protein D1, fluorescing at 673 nm, formed within 7 h of dark incubation of light-grown Gloeotrichia raciborski cyanobacteria. Within 3-5 min of light exposure, D1 was transformed into the 47-kDa protein of the internal antenna of photosystem II, fluorescing at 697 nm. [on SciFinder (R)] Notes: CAN 110:189686 11-6
Plant Biochemistry Inst. Biokhim.,Moscow,USSR. Journal 0002-3264 written in Russian. Reference Type: Journal Article Record Number: 199 Author: Khan, K. R.; Maxwell, T. F.; Forest, H. S. Year: 1989 Title: Taxonomic implications of developmental morphology in blue-green algae: Rivularia, Gloeotrichia , and Calothrix Journal: Journal of Phycology Volume: 25 Issue: 2 suppl. Pages: 15 Alternate Journal: J. Phycol. Accession Number: 2130037 Keywords: morphogenesis; taxonomy; Cyanophyta; Rivularia; Gloeotrichia; Calothrix algal culture Q1 01223 Taxonomy and morphology; Q3 01585 Plant culture Abstract: Cultures were obtained from collections and started with material collected in the field. Included were planktonic and non-planktonic forms, with and without gas vacuoles. Although assigned to different genera in classical taxonomy, all of the algae showed similarity in development, including stages in which the trichomes are not tapered and lack heterocysts. Gas vacuoles were not a constant character in any culture. Small differences were observed among cultures, but they were interpreted as being in the order of population variation not taxonomic categories. Notes: Annu. Meet. of the Phycological Soc. of America, Toronto, Ont. (Canada), 6-10 Aug 1989 1989
0022-3646 Summary only. English Journal Article; Conference; Summary Author Address: State Univ. New York, Geneseo, NY 14454-1401, USA Reference Type: Journal Article Record Number: 200 Author: Codd, G. A.; Brooks, W. P.; Priestley, I. M.; Poon, G. K.; Bell, S. G.; Fawell, J. K. Year: 1989 Title: Production, detection, and quantification of cyanobacterial toxins Journal: Toxicity Assessment Volume: 4 Issue: 4 Pages: 499-511 Accession Number: AN 1990:2365 Keywords: Toxins Role: BIOL (Biological study) (of cyanobacteria, prodn. and detection and quantification of); Anabaena; Aphanizomenon flos-aquae; Cyanobacteria; Gloeotrichia echinulata; Microcystis aeruginosa; Oscillatoria (toxins of, prodn. and detection and quantification of) cyanobacteria toxin prodn detection Abstract: Cyanobacterial blooms from several British freshwaters have been toxic by mouse bioassay each year since annual sampling began in 1981. Toxic blooms of Microcystis aeruginosa, Anabaena, Gloeotrichia echinulata, Oscillatoria, and Aphanizomenon flos-aquae occur, with peptide toxin-producing Microcystis and Anabaena being most often encountered. A range of detection and quantification methods were developed for cyanobacterial peptide and alkaloid toxins to supplement the std. mouse bioassay. Both types of toxins can be readily assayed by HPLC, and facile high-performance TLC procedures were developed for their detection from natural blooms and lab. cultures. Also polyclonal and monoclonal antibodies for the assay of Microcystis toxins by ELISA and in vitro fibroblast cytotoxicity assays for the toxins of Microcystis and other cyanobacteria were developed. [on SciFinder (R)] Notes: CAN 112:2365 4-5
Toxicology Dep. Biol. Sci.,Univ. Dundee,Dundee,UK. Journal 0884-8181 written in English. Reference Type: Journal Article Record Number: 201 Author: Aziz, A.; Almousawi, A.; Whitton, B. A. Year: 1989 Title: Morphogenesis of Blue-Green-Algae .2. Hair Differentiation in Gloeotrichia Journal: Bangladesh Journal of Botany Volume: 18 Issue: 2 Pages: 205-208 Date: Dec Accession Number: ISI:A1989CF10500012 Notes: English URL: Author Address: AZIZ, A, UNIV DHAKA,DEPT BOT,DHAKA 1000,BANGLADESH. Reference Type: Journal Article Record Number: 202 Author: Singh, A. L.; Singh, P. K.; Singh, P. L. Year: 1988 Title: Effects of different herbicides on the Azolla and blue-green algal biofertilization of rice Journal: Journal of Agricultural Science Volume: 111 Issue: 3 Pages: 451-8 Accession Number: AN 1989:533179 Keywords: Rice (biofertilizers for, Azolla and blue-green algae as, herbicides effect on efficiency of); Nitrogen fixation (by Azolla and cyanobacteria, herbicides effect on, biofertilization efficiency in rice fields in relation to); Azolla pinnata (growth and nitrogen fixation by, in rice fields, herbicides effect on, biofertilization efficiency in relation to); Herbicides (growth and nitrogen fixation of Azolla and blue-green algae in rice fields response to, biofertilization efficiency in relation to); Cyanobacteria (in rice fields, herbicides effect on, biofertilization efficiency in relation to); Toxicity (of herbicides, to cyanobacteria in rice); Fertilizer experiment (with Azolla and cyanobacteria and herbicides, with rice); Fertilizers Role: BIOL (Biological study) (bio-, Azolla and blue-green algae, for rice, herbicides effect on); Toxicity (phyto-, of herbicides, to Azolla in rice) rice biofertilizer Azolla blue green algae; herbicide rice Azolla cyanobacteria Abstract: Pre-emergence herbicides applied at recommended rates 3 days after transplanting (DAT) rice plants, inhibited growth and N2-fixation of A. pinnata and BGA (blue-green algae dry mixts. contg. mainly Aulosira, Gloeotrichia, and Aphanothece) inoculated 10 DAT. This inhibition was up to 15 DAT in Azolla and up to 20 DAT in BGA. Butachlor (Machete) and oxadiazon (Ronstar) resulted in higher toxicity to Azolla and BGA than benthiocarb (Saturn) and pendimethalin (Stomp). The application of 0.5 kg/ha 2,4-D Na salt did not inhibit growth of Azolla but inhibited BGA growth. However, 2,4-DEE (Knochweed), a postemergence herbicide, applied 30 DAT showed inhibited the growth and N2-fixation of both Azolla and BGA. Inoculation of 2.0 tons/ha of fresh Azolla 10 DAT produced max. biomass within 20-25 days of herbicide treatments, depending upon the season. Inoculation of 10 kg/ha of a dry mixt. of BGA 10 DAT could produce the max. biomass 60 and 80 DAT in control and herbicide treated plots, resp. The biomass and nitrogen produced by Azolla recorded at max. mat formation were similar in both herbicide-treated and untreated plots, but in BGA these were higher in controls than those of herbicide-treated plots. The use of Azolla and BGA biofertilizers along with herbicides increased the grain and straw yields, and panicle no. and nitrogen uptake, by rice over no Azolla or BGA treatments. The Azolla and BGA treatments even without weeding increased rice yield up to that of herbicide and biofertilizer treatments. [on SciFinder (R)] Notes: CAN 111:133179 19-5
Fertilizers, Soils, and Plant Nutrition Cent. Rice Res. Inst.,Cuttack,India. Journal 0021-8596 written in English. 533-23-3 (Knochweed); 2702-72-9; 19666-30-9 (Ronstar); 23184-66-9; 28249-77-6 (Saturn); 40487-42-1 Role: BIOL (Biological study) (growth and nitrogen fixation of Azolla and blue-green algae in rice fields response to, biofertilization efficiency in relation to); 7727-37-9 Role: BIOL (Biological study) (nitrogen fixation, by Azolla and cyanobacteria, herbicides effect on, biofertilization efficiency in rice fields in relation to) Reference Type: Journal Article Record Number: 44 Author: Richardson, Laurie L.; Aguilar, Carmen; Nealson, Kenneth H. Year: 1988 Title: Manganese Oxidation in pH and $O_2$ Microenvironments Produced by Phytoplankton Journal: Limnology and Oceanography Volume: 33 Issue: 3 Pages: 352-363 Date: May Abstract: Pure cultures of Chlorella sp. catalyzed the oxidation of soluble Mn(II) to particulate, extracellular, manganic oxides. Manganese oxidation was dependent on photosynthetic activity: no oxidation was observed in the dark when cells were grown heterotrophically on glucose, or in the light when photosystem II was inhibited by the addition of DCMU. Manganates were not formed when media were buffered below pH 8.0, suggesting that an important driving force for manganese oxidation was the high pH resulting from photosynthesis. Field studies with minielectrodes in Oneida Lake, New York, demonstrated steep gradients of $O_2$ and pH and the presence of particulate manganic oxides associated with pelagic aggregates of the cyanobacterium Microcystis sp. The manganese oxidation reaction apparently occurs only when photosynthesizing algae are present as dense populations that can generate microenvironments of high (> 9.0) pH, either as aggregates in the pelagic zone or concentrated cell cultures in the laboratory. A large-scale transition from soluble to particulate manganese was measured in the surface waters of Oneida Lake throughout summer 1986. Removal of Mn(II) was correlated with the presence of aggregate-forming cyanobacteria that oxidize Mn(II) by the mechanism described above. Notes: FLA 00243590
American Society of Limnology and Oceanography latex
Copyright 1988 American Society of Limnology and Oceanography URL: http://links.jstor.org/sici?sici=0024-3590%28198805%2933%3A3%3C352%3AMOIPAM%3E2.0.CO%3B2-8 Reference Type: Journal Article Record Number: 26 Author: Paerl, Hans W. Year: 1988 Title: Nuisance Phytoplankton Blooms in Coastal, Estuarine, and Inland Waters Journal: Limnology and Oceanography Volume: 33 Issue: 4, Part 2: Comparative Ecology of Freshwater and Marine Ecosystems Pages: 823-847 Date: Jul. Abstract: Multiple interacting physical, chemical, and biotic factors, in proper combination, lead to the development and persistence of nuisance algal blooms. Upon examining combinations of environmental conditions most likely to elicit nuisance blooms, commonalities and analog situations become more apparent among coastal marine (dinoflagellate-dominated), estuarine (dinoflagellate and cyanobacteria-dominated), and freshwater (cyanobacteria-dominated) ecosystems. A combination of the following hydrological, chemical, and biotic factors will most likely lead to bloom-sensitive waters: a horizontally distinct water mass; a vertically stratified water column; warm weather conditions, as typified by dry monsoon tropical climates and summer seasons in temperate zones; high incident photosynthetically active radiation (PAR); enhanced allochthonous organic matter loading (both as DOC and POC); enhanced allochthonous inorganic nutrient loading (nitrogen and/or phosphorus); adequate availability of essential metals, supplied by terrigenous inputs or upwelling; underlying sediments physically and nutritionally suitable as "seed beds" for resting cysts and akinetes; algal-bacterial synergism, which exhibits positive impacts on phycosphere nutrient cycling; algal-micrograzer (protists and rotifers) synergism, which also enhances nutrient cycling without consumption of filamentous and colonial nuisance taxa; and selective (for nonnuisance taxa) activities of macrograzers (crustacean zooplankton, larval fish). Nuisance bloom taxa share numerous additional physiological and ecological characteristics, including limited heterotrophic capabilities, high degrees of motility, and toxicity. Given such a set of commonalities, it would appear useful and timely to identify and address generally applicable criteria for deeming a water body "bloom sensitive" and to incorporate such criteria into the design of water quality management strategies applicable to both coastal marine and freshwater habitats. Notes: FLA Part 2: Comparative Ecology of Freshwater and Marine Ecosystems 00243590 American Society of Limnology and Oceanography Copyright 1988 American Society of Limnology and Oceanography
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