| photochemical activity and components of membrane preparations from blue-green algae. ii. low-temperature photooxidation of cytochrome b559. | | 1974 | 4214171 |
| the genetics of blue-green algae. | | 1972 | 4199772 |
| the labeling of nucleic acids by radioactive precursors in the blue-green algae anacystis nidulans and synechocystis aquatilis sanv. | | 1973 | 4201019 |
| the synthesis and stability of ribosomal rna in blue-green algae. | | 1973 | 4200178 |
| [effect of carbon-containing compounds on the chromatic characteristics of anacystis nidulans blue-green algae]. | | 1973 | 4201591 |
| 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 ... | 1973 | 4200722 |
| nadh:hydroxypyruvate reductase and nadph:glyoxylate reductase in algae: partial purification and characterization from chlamydomonas reinhardtii. | hydroxypyruvate and glyoxylate reductase activities were measured in extracts from the unicellular green algae, chlamydomonas reinhardtii, chlorella vulgaris, chlorella miniata, and dunaliella tertiolecta. only trace levels of these activities were detectable in the blue-green algae, anabaena variabilis and synechococcus leopoliensis. a nadh-dependent hydroxypyruvate reductase was purified 130-fold from chlamydomonas to a specific activity of 18 mumol nadh oxidized x min-1 x mg protein-1. the ph ... | 1987 | 3545081 |
| peculiar feature of the organization of rrna genes of the chlorella chloroplast dna. | the organization of a cloned rrna gene cluster from chlorella ellipsoidea chloroplast dna (cpdna) has been analyzed. southern hybridization experiments with labelled chloroplast rrnas as probes revealed an extraordinarily large size of the 16s-23s rrna spacer region, ca. 4.8 kbp, almost twice as large as those of most higher plants. the nucleotide sequence determined on this region has shown that: (1) the trnaile gene locating in this region is similar to those of higher plant chloroplasts, blue ... | 1986 | 3714498 |
| structure and localization of long-chain glycolipids in the heterocyst envelope of a blue-green algae. | | 1973 | 4127514 |
| 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 ... | 1974 | 4204443 |
| [lysis of blue-green algae by an agent of nonviral character]. | | 1973 | 4205238 |
| pyridine nucleotide-dependent glucose dehydrogenase activity in blue-green algae. | pyridine nucleotide-dependent glucose dehydrogenase activity (gpnd) is described for the first time in cell-free extracts of certain blue-green algae. when glucose is added to these crude cell extracts, nicotinamide adenine dinucleotide phosphate is reduced at twice the rate as nicotinamide adenine dinucleotide; but evidence suggests that this activity is due to a single enzyme. the distribution and level of gpnd in selected blue-green algae correlates with the heterotrophic potential of each sp ... | 1973 | 4144590 |
| effect of pesticides on blue-green algae. | | 1973 | 4120877 |
| [oxygen consumption by blue-green algae]. | | 1974 | 4214568 |
| the program of protein synthesis during heterocyst differentiation in nitrogen-fixing blue-green algae. | | 1974 | 4214619 |
| the isolation of gas vesicles from blue-green algae. | | 1974 | 4214028 |
| fine control of citrate synthase activity in blue-green algae. | | 1973 | 4147752 |
| d-ribulose 1, 5-diphosphate carboxylase from blue-green algae. | | 1974 | 4216351 |
| [concentration of several polyvalent metals in blue-green algae]. | | 1974 | 4217423 |
| observations of toxic blue-green algae (cyanobacteria) in some scandinavian lakes. | | 1986 | 3105274 |
| estimation of the genome size of blue-green algae from dna renaturation rates. | | 1974 | 4215395 |
| control of macromolecular composition and cell division in the blue-green algae anacystis nidulans. | | 1974 | 4214895 |
| photosynthetic nitrogen fixation by blue-green algae. | | 1972 | 4218898 |
| nadh oxidase in blue-green algae. | | 1968 | 4300766 |
| udp-d-glucuronate 4-epimerase in blue-green algae. | | 1969 | 4306269 |
| [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)]. | | 1973 | 4272180 |
| a comparison of the fine structure and nucleic acid biochemistry of chloroplasts and blue-green algae. | | 1971 | 4326562 |
| extracellular products of blue-green algae. | | 1965 | 4285448 |
| [photoinduced ph changes in cell suspensions of the blue-green algae anabaena variabilis and synechosystis aquatilis]. | | 1972 | 4625326 |
| [a study of the dying off of blue-green algae in the dark]. | | 1974 | 4208198 |
| studies on the toxicity of polymyxin b to blue-green algae. | | 1967 | 4292854 |
| the detection of a bound ferredoxin in the photosynthetic lamellae of blue-green algae and other oxygen evolving photosynthetic organisms. | | 1973 | 4350064 |
| light effect on the internal osmotic pressure of the blue-green algae plectonema boryanum and phormidium luridum. | | 1972 | 4629378 |
| metabolism of glucose by unicellular blue-green algae. | | 1972 | 4629415 |
| tetrazolium reduction and nitrogenase activity in heterocystous blue-green algae. | | 1972 | 4629416 |
| [gas vacuoles in blue-green algae and bacteria]. | | 1974 | 4366354 |
| [electron miscroscopic study of the morphogenesis of the blue-green algae virus]. | | 1973 | 4208366 |
| [liberation of molecular hydrogen by cultures of blue-green algae]. | | 1973 | 4209236 |
| [mutagenesis in blue-green algae synechocystis aquatilis sanv]. | | 1971 | 4347182 |
| sequence of a genomic dna clone for the small subunit of ribulose bis-phosphate carboxylase-oxygenase from tobacco. | we have cloned and sequenced a gene for the small subunit (ss) of ribulose bis-phosphate carboxylase-oxygenase from nicotiana tabacum. the tobacco gene is most closely related to the ss genes from the dicots soybean and pea, and less so to the monocots wheat and lemna; the deduced amino acid sequence of the mature protein is in all cases more closely conserved than is its chloroplast transit sequence. unlike the genomic sequences of the two monocots, which have one intron, and the two other dico ... | 1985 | 4000958 |
| soluble & membrane-bound superoxide dismutases in a blue-green algae (spirulina)and spinach. | | 1974 | 4364622 |
| 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 ... | 1969 | 4390093 |
| 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 ... | 1974 | 4421249 |
| growth of the blue-green algae virus lpp-1 under conditions which impair photosynthesis. | | 1971 | 4399444 |
| the fine structure of blue-green algae. | | 1968 | 4879516 |
| 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. | 1972 | 4621951 |
| 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 ... | 1972 | 4621688 |
| oxidation--reduction properties of phytoflavin, a flavoprotein from blue-green algae. | | 1972 | 4402991 |
| [blue-green algae as producers of toxic substances]. | | 1968 | 4903619 |
| fatty acid composition and physiological properties of some filamentous blue-green algae. | | 1972 | 4623694 |
| [serological investigations on thylakoids of photosynthetic bacteria and blue-green algae]. | | 1972 | 4623872 |
| [carbohydrates of some blue-green algae]. | | 1969 | 4981326 |
| [blue-green algae in norwegian inland waters. the possible health consequences in man and animals]. | | 1972 | 4623926 |
| the heterocysts of blue-green algae. 3. differentiation and nitrogenase activity. | | 1972 | 4403286 |
| [correlation of photo-induced ph changes in cell suspensions of obligate phototrophic blue-green algae with photosynthetic o2 evolution and after-light respiration]. | | 1972 | 4625445 |
| photooxidation of 3,3'-diaminobenzidine by blue-green algae and chlamydomonas reinhardii. | | 1972 | 4623089 |
| is the heterocyst the site of nitrogen fixation in blue-green algae? | | 1968 | 4880705 |
| [intercellular interactions and recovery of the population of plectonema boryanum blue-green algae following gamma-irradiation]. | | 1972 | 4624190 |
| thermophilic blue-green algae and the thermal environment. | | 1969 | 4984428 |
| mesosomes in blue-green algae. | | 1972 | 4626335 |
| characterization of the ribosomal ribonucleic acids of blue-green algae. | | 1972 | 4628668 |
| 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 ... | 1972 | 4626540 |
| antimicrobial effects of cellvibrio on blue-green algae. | | 1972 | 4626336 |
| possible evolutionary significance of polyunsaturated fatty acids in blue-green algae. | | 1970 | 4988959 |
| 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 ... | 1972 | 4629975 |
| [utilization by higher plants of nitrogen fixed from the atmosphere by blue-green algae]. | | 1969 | 4990417 |
| photosynthetic and dark carbon metabolism in unicellular blue-green algae. | | 1972 | 4628178 |
| phosphate metabolism in blue-green algae. i. fine structure of the "polyphosphate overplus" phenomenon in plectonema boryanum. | | 1974 | 4371465 |
| 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 ... | 1970 | 4990764 |
| simulation of organisms using a developmental model. 2. the heterocyst formation problem in blue-green algae. | | 1972 | 4631547 |
| reduced nicotinamide-adenine dinucleotide phosphate oxidase in the autotrophic blue-green algae anabaena variabilis. | | 1968 | 4386501 |
| special aspects of nitrogen fixation by blue-green algae. | | 1969 | 4389401 |
| physiology and cytological chemistry blue-green algae. | | 1973 | 4633592 |
| ecology, physiology, and biochemistry of blue-green algae. | | 1968 | 4880646 |
| formation of hybrid proteins form the and subunits of phycocyanins of unicellular and filamentous blue-green algae. | | 1973 | 4630850 |
| 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. | 1969 | 4891858 |
| [effect of nitrogen-fixing blue-green algae on crop plants]. | | 1969 | 4993451 |
| gas vacuoles. light shielding in blue-green algae. | | 1971 | 4993483 |
| [metabolically active spheroplasts of blue-green algae]. | | 1970 | 4993267 |
| nitrogenase activity in heterocysts of blue-green algae. | | 1969 | 4981122 |
| ammonia assimilation in blue-green algae. | | 1973 | 4632607 |
| [role of nitrogen fixing blue-green algae in the soil of mecklenburg]. | | 1967 | 4981705 |
| [flexibacterium lyzing blue-green algae]. | | 1972 | 4633037 |
| endogenous dark respiration of the blue-green alga, plectonema boryanum. | endogenous dark respiration in the blue-green alga plectonema boryanum is markedly affected by preincubation in the light: it can be increased from a basal rate of 5 nmoles of o(2) to 55 nmoles of o(2) per mg of cell protein per min after exposure of the cells to light for 8 to 10 hr. under conditions of enhanced dark respiration, cyanophage multiplication in the dark increases drastically and approaches the cyanophage yields obtained in photosynthesizing plectonema cells. this implies that the ... | 1971 | 4994602 |
| 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 ... | 1967 | 4963789 |
| nitrogen fixation by unicellular blue-green algae. | | 1971 | 4996394 |
| 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 ... | 1969 | 4982667 |
| [isolation and characteristic propertyies of dna of the blue-green algae anacystic nidulans]. | | 1971 | 4997702 |
| free amino acid composition of some nitrogen fixing blue-green algae in heterocystous and non-heterocystous conditions. | | 1970 | 4983791 |
| [nitrogen-fixing ability of blue-green algae in paddy fields in the south of the ukrainian ssr]. | | 1970 | 4996785 |
| nitrogen chlorosis in blue-green algae. | | 1969 | 4986616 |
| 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. | 1970 | 4986715 |
| studies with deoxyribonucleic acid from blue-green algae. | | 1969 | 4988685 |
| 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 ... | 1970 | 4986835 |
| on biological nitrogen fixation in nature, particularly in blue-green algae. | | 1970 | 4988906 |
| [molybdenum and cobalt requirements of nitrogen-fixing blue-green algae with different nitrogen sources]. | | 1972 | 4630048 |
| 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 ... | 1967 | 4990040 |
| 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. | 1973 | 4630211 |
| 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 ... | 1972 | 4630449 |
| 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 ... | 1970 | 4988043 |