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measurement of the cyanophycin granule polypeptide contained in the blue-green alga anabaena cylindrica.an assay was developed to determine the amount of cyanophycin granules in blue-green algae. the amount of this polypeptide in cells of anabaena cylindrica was measured as a function of culture age and was compared with changes in other proteinaceous cellular components. the data presented support the notion that the cyanophycin granule is a cellular nitrogen reserve.19734197270
[activity of fructose-1,6-diphosphate aldolase in blue-green algae]. 19734197706
simple methods for plating single vegetative cells of, and for replica-plating, filamentous blue-green algae. 19734197882
loss of photosynthetic activity in two blue-green algae as a result of osmotic stress.a progressive loss of photosynthetic activity occurred when cells of anacystis nidulans and coccochloris peniocystis were incubated in increasing concentrations of osmotica from 0.2 to 0.7 m, and there was a release of pteridine from the cells proportional to the loss of photosynthetic activity.19734197908
electron microscope and physical chemical characterization of c-phycocyanin from fresh extracts of two blue-green algae. 19734199438
the genetics of blue-green algae. 19724199772
the synthesis and stability of ribosomal rna in blue-green algae. 19734200178
differentiation in nostoc muscorum: nitrogenase is synthesized in heterocysts.cellular differentiation can be observed in certain filamentous blue-green algae after transfer of the cells from medium containing nh(4) (+) or no(3) (-) to nitrogen-free medium. the appearance of differentiated cells (heterocysts) is accompanied by an increase in the activity of nitrogenase, an enzyme complex that reduces n(2) to nh(3). we have separated vegetative cells from heterocysts in differentiated filaments of nostoc muscorum, and analyzed their proteins by polyacrylamide-gel electroph ...19734200722
the labeling of nucleic acids by radioactive precursors in the blue-green algae anacystis nidulans and synechocystis aquatilis sanv. 19734201019
[effect of carbon-containing compounds on the chromatic characteristics of anacystis nidulans blue-green algae]. 19734201591
cyanophages-viruses attacking blue-green algae. 19734202147
phycobilisomes in blue-green algae.fifteen species of freshwater blue-green algae, including unicellular, filamentous, and colonial forms, were subjected to a variety of fixatives, fixation conditions, and stains for comparison of the preservation of phycobilisomes. absorption spectra of the corresponding in vivo and released photosynthetic pigments, in 10 of the species that were maintained in culture, demonstrated the presence of phycocyanin in all 10 species and phycoerythrin in only 2 of them. spectroscope and electron micros ...19744204443
[lysis of blue-green algae by an agent of nonviral character]. 19734205238
[formation of the infectious form of the blue-green algae virus in plant tissue culture]. 19734205965
[a study of the dying off of blue-green algae in the dark]. 19744208198
[electron miscroscopic study of the morphogenesis of the blue-green algae virus]. 19734208366
[liberation of molecular hydrogen by cultures of blue-green algae]. 19734209236
[reactivity of the volatile exometabolites of some blue-green algae, bacteria, fungi and actinomycetes]. 19744211622
the isolation of gas vesicles from blue-green algae. 19744214028
photochemical activity and components of membrane preparations from blue-green algae. ii. low-temperature photooxidation of cytochrome b559. 19744214171
[oxygen consumption by blue-green algae]. 19744214568
the program of protein synthesis during heterocyst differentiation in nitrogen-fixing blue-green algae. 19744214619
control of macromolecular composition and cell division in the blue-green algae anacystis nidulans. 19744214895
estimation of the genome size of blue-green algae from dna renaturation rates. 19744215395
d-ribulose 1, 5-diphosphate carboxylase from blue-green algae. 19744216351
[concentration of several polyvalent metals in blue-green algae]. 19744217423
photosynthetic nitrogen fixation by blue-green algae. 19724218898
[nitrogen excretion by nitrogen fixing blue-green algae. i. growth of anabaena cylindriea and nostoc muscorum in various media, at different temperatures, and under light of different wavelengths (author's transl)]. 19734272180
extracellular products of blue-green algae. 19654285448
studies on the toxicity of polymyxin b to blue-green algae. 19674292854
nadh oxidase in blue-green algae. 19684300766
udp-d-glucuronate 4-epimerase in blue-green algae. 19694306269
a comparison of the fine structure and nucleic acid biochemistry of chloroplasts and blue-green algae. 19714326562
[mutagenesis in blue-green algae synechocystis aquatilis sanv]. 19714347182
the detection of a bound ferredoxin in the photosynthetic lamellae of blue-green algae and other oxygen evolving photosynthetic organisms. 19734350064
soluble & membrane-bound superoxide dismutases in a blue-green algae (spirulina)and spinach. 19744364622
[gas vacuoles in blue-green algae and bacteria]. 19744366354
phosphate metabolism in blue-green algae. i. fine structure of the "polyphosphate overplus" phenomenon in plectonema boryanum. 19744371465
reduced nicotinamide-adenine dinucleotide phosphate oxidase in the autotrophic blue-green algae anabaena variabilis. 19684386501
special aspects of nitrogen fixation by blue-green algae. 19694389401
respiration in blue-green algae.the low rate of endogenous respiration exhibited by the blue-green algae anacystis nidulans and phormidium luridum was not increased by the addition of respiratory substrates. however, endogenous respiration was inhibited by low concentrations of cyanide and by high carbon monoxide tensions. in addition, the uncouplers dinitrophenol and carbonyl cyanide p-trifluoromethoxyphenylhydrazone both stimulated the respiratory rate. the transition of cells from the aerobic steady state to anaerobiosis wa ...19694390093
growth of the blue-green algae virus lpp-1 under conditions which impair photosynthesis. 19714399444
oxidation--reduction properties of phytoflavin, a flavoprotein from blue-green algae. 19724402991
the heterocysts of blue-green algae. 3. differentiation and nitrogenase activity. 19724403286
preliminary analysis of lipids and fatty acids of green bacteria and chloroflexus aurantiacus.the complex lipids and fatty acids of the seven type species of green bacteria and three strains of chloroflexus aurantiacus were analyzed. the green bacteria contained lipids that behaved as cardiolipin and phosphatidylglycerol on thin-layer chromatography. they did not contain phosphatidylethanolamine or phosphatidylserine. similarly, chloroflexus contained lipids that behaved as phosphatidylglycerol and phosphatidylinositol on thin-layer chromatography and did not contain phosphatidylethanola ...19744421249
fatty acid composition of unicellular strains of blue-green algae.the fatty acids of 34 strains of unicellular blue-green algae provisionally assigned to the genera synechococcus, aphanocapsa, gloeocapsa, microcystis, and chlorogloea by stanier et al. have been chemically characterized. the strains analyzed can be divided into a series of compositional groups based upon the highest degree of unsaturation of the major cellular fatty acids. twenty strains fall into the group characterized by one trienoic fatty acid isomer (alpha-linolenic acid), and seven strain ...19724621688
homology between nucleic acids of blue-green algae and chloroplasts of euglena gracilis.ribosomal rna from several blue-green algae was hybridized to dna from euglena gracilis chloroplasts by the membrane filter procedure. this hydridization was competitive with chloroplast ribosomal rna and indicates significant genetic homology between blue-green algae and plastids from euglena gracilis.19724621951
photooxidation of 3,3'-diaminobenzidine by blue-green algae and chlamydomonas reinhardii. 19724623089
fatty acid composition and physiological properties of some filamentous blue-green algae. 19724623694
[serological investigations on thylakoids of photosynthetic bacteria and blue-green algae]. 19724623872
[blue-green algae in norwegian inland waters. the possible health consequences in man and animals]. 19724623926
[intercellular interactions and recovery of the population of plectonema boryanum blue-green algae following gamma-irradiation]. 19724624190
[photoinduced ph changes in cell suspensions of the blue-green algae anabaena variabilis and synechosystis aquatilis]. 19724625326
[correlation of photo-induced ph changes in cell suspensions of obligate phototrophic blue-green algae with photosynthetic o2 evolution and after-light respiration]. 19724625445
mesosomes in blue-green algae. 19724626335
antimicrobial effects of cellvibrio on blue-green algae. 19724626336
photooxidative death in blue-green algae.when incubated in the light under 100% oxygen, wild-type blue-green algae (anacystis nidulans, synechococcus cedrorum) die out rapidly at temperatures of 4 to 15 c, and at 35 c (or at 26 c in the case of s. cedrorum) in the absence of co(2). photosynthesis is impaired in these cells long before they die. blocking of photosystem ii at high temperatures in the presence of co(2) sensitizes the algae to photooxidative death. photooxidative death and bleaching of photosynthetic pigments are separable ...19724626540
photosynthetic and dark carbon metabolism in unicellular blue-green algae. 19724628178
characterization of the ribosomal ribonucleic acids of blue-green algae. 19724628668
light effect on the internal osmotic pressure of the blue-green algae plectonema boryanum and phormidium luridum. 19724629378
metabolism of glucose by unicellular blue-green algae. 19724629415
tetrazolium reduction and nitrogenase activity in heterocystous blue-green algae. 19724629416
the activity of deoxyribonucleic acid polymerase in some species of algae.1. the activities of dna polymerase preparations from the algae euglena gracilis, chlamydomonas reinhardtii, chlorella pyrenoidosa, anabaena variabilis and anacystis nidulans were measured. the blue-green algae anabaena and anacystis contain a 5-20-fold higher activity of the enzyme than do the green algae. dna polymerases from the blue-green algae show a ph optimum of 9 and prefer a relatively low mg(2+) concentration (1-3mm). dna polymerases from the green algae, however, display a ph optimum ...19724629975
[molybdenum and cobalt requirements of nitrogen-fixing blue-green algae with different nitrogen sources]. 19724630048
blue-green algae: why they become dominant.the injection of carbon dioxide and the addition of nitrogen and phosphorus to a lake population dominated by blue-green algae results in a rapid shift to dominance by green algae. the basis for the change and its implications are discussed.19734630211
ribosomal ribonucleic acid and ribosomal precursor ribonucleic acid in anacystis nidulans.the rna of the blue-green alga anacystis nidulans contains three ribosomal rna species with molecular weights of 0.56x10(6), 0.9x10(6), and 1.1x10(6) if the rna is extracted in the absence of mg(2+). the 0.9x10(6)mol.wt. rrna is extremely slowly labelled in (32)p-incorporation experiments. this rrna may be a cleavage product of the 1.1x10(6)mol.wt. rrna from the ribosomes of cells in certain physiological states (e.g. light-deficiency during growth). the cleavage of the 1.1x10(6)mol.wt. rrna dur ...19724630449
formation of hybrid proteins form the and subunits of phycocyanins of unicellular and filamentous blue-green algae. 19734630850
simulation of organisms using a developmental model. 2. the heterocyst formation problem in blue-green algae. 19724631547
ammonia assimilation in blue-green algae. 19734632607
[flexibacterium lyzing blue-green algae]. 19724633037
physiology and cytological chemistry blue-green algae. 19734633592
the veterinarian's part in the regulation of the movement of livestock and meat. 20154675709
the fine structure of blue-green algae. 19684879516
ecology, physiology, and biochemistry of blue-green algae. 19684880646
is the heterocyst the site of nitrogen fixation in blue-green algae? 19684880705
cytophaga that kills or lyses algae.a myxobacterium (cytophaga n-5) isolated from sewage kills or lyses an array of living green and blue-green algae. when assayed with nostoc muscorum or plectonema boryanum, plaques form like those caused by the blue-green algal virus lpp-1. this isolate lyses or inhibits mutually gram-positive and gram-negative eubacteria.19694891858
[blue-green algae as producers of toxic substances]. 19684903619
biochemical basis of obligate autotrophy in blue-green algae and thiobacilli.differential rates of incorporation of sugars, organic acids, and amino acids during autotrophic growth of several blue-green algae and thiobacilli have been determined. in obligate autotrophs (both blue-green algae and thiobacilli), exogenously furnished organic compounds make a very small contribution to cellular carbon; acetate, the most readily incorporated compound of those studied, contributes about 10% of newly synthesized cellular carbon. in thiobacillus intermedius, a facultative chemoa ...19674963789
nitrogenase activity in heterocysts of blue-green algae. 19694981122
[carbohydrates of some blue-green algae]. 19694981326
[role of nitrogen fixing blue-green algae in the soil of mecklenburg]. 19674981705
comparative study of the structure of gas vacuoles.the fine structure of gas vacuoles was examined in two blue-green algae, two green bacteria, three purple sulfur bacteria, and two halobacteria. the gas vacuole is a compound organelle, composed of a variable number of gas vesicles. these are closed, cylindrical, gas-containing structures with conical ends, about 80 to 100 nm in width and of variable length, ranging from 0.2 to over 1.0 mum. the wall of the gas vesicle is a non-unit membrane 2 to 3 nm in thickness, bearing very regular striation ...19694982667
free amino acid composition of some nitrogen fixing blue-green algae in heterocystous and non-heterocystous conditions. 19704983791
thermophilic blue-green algae and the thermal environment. 19694984428
nitrogen chlorosis in blue-green algae. 19694986616
biological nitrogen fixation in lake erie.biological nitrogen fixation, as determined by acetylene reduction, occurs in lake erie. fixation potential by blue-green algae in situ in water and by bacteria in collected sediments was demonstrated. nitrogen-fixing activity occurred from june through november suggesting that it is significant over the extremes of seasonal variation in light, temperature, and nutrients.19704986715
biosynthesis of phytoquinones. homogentisic acid: a precursor of plastoquinones, tocopherols and alpha-tocopherolquinone in higher plants, green algae and blue-green algae.1. by means of (14)c tracer experiments and isotope competition experiments the roles of d-tyrosine, p-hydroxyphenylpyruvic acid, p-hydroxyphenylacetic acid, phenylacetic acid, homogentisic acid and homoarbutin (2-methylquinol 4-beta-d-glucoside) in the biosynthesis of plastoquinones, tocopherols and alpha-tocopherolquinone by maize shoots was investigated. it was established that d-tyrosine, p-hydroxyphenylpyruvic acid and homogentisic acid can all be utilized for this purpose, whereas p-hydrox ...19704986835
wall development and tetrazolium chloride reduction in heterocysts of blue-green algae, anabaena ambigua. 19704987427
characteristics of a stable, filamentous mutant of a coccoid blue-green alga.filamentous mutants were induced in a coccoid blue-green alga, agmenellum quadruplicatum strain bg1, after treatment with n-methyl-n'-nitro-n-nitrosoguanidine (ntg). the mutants fall into two general classes: filaments with cross walls and filaments without cross walls. all mutants of these general types derived from bg1 are stable and have growth rates the same as or very similar to the wild type under a variety of conditions. detailed examination of one mutant, 53sb2, revealed no difference in ...19704988043
studies with deoxyribonucleic acid from blue-green algae. 19694988685
on biological nitrogen fixation in nature, particularly in blue-green algae. 19704988906
possible evolutionary significance of polyunsaturated fatty acids in blue-green algae. 19704988959
morphology of a virus of blue-green algae and properties of its deoxyribonucleic acid.the morphology of safferman's virus of blue-green algae (phycovirus lpp-1) has been studied by electron microscopy and physicochemical methods. the virion has a short (100 to 200 a long, 150 a in diameter) forked tail, with an outer sheath, an inner core, and a capital attached to one of the vertices of a polyhedral head. the head capsid edge-to-edge distance is 600 a, based upon internal calibration of the magnification in electron micrographs by use of the line-line spacing of catalase crystal ...19674990040
[utilization by higher plants of nitrogen fixed from the atmosphere by blue-green algae]. 19694990417
[carotenoids of the blue-green algae anacystis nidulans]. 19694990485
[glucokinase activity of some green and blue-green algae]. 19704990492
lysis of blue-green algae by myxobacter.enrichment from local fishponds led to the isolation of a bacterium capable of lysing many species of unicellular and filamentous blue-green algae, as well as certain bacteria. the isolate is an aflagellate, motile rod which moves in a gliding, flexuous manner; the organism is capable of digesting starch and agar, but not cellulose and gelatin. its deoxyribonucleic acid base pair composition (per cent guanine plus cytosine approximately 70) shows a close resemblance to that of the fruiting myxob ...19704990764
one-dimensional pattern found in blue-green algae. 19704990855
the effect of light on growth and development of two nitrogen fixing blue-green algae. 19704992044
[molybdenum requirements of several nitrogen-fixing blue-green algae]. 19704992443
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