Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| some points in the life history and in the decomposition of blue-green algae as illustrated by oscillaria prolifica (with samples). | 1901 | 19601023 | |
| nitrogen fixation by blue-green algae. | 1930 | 17818238 | |
| causes of color change in blue-green algae. | 1934 | 16587880 | |
| observations on the pathological changes produced by a toxic substance present in blue-green algae (microcystis aeruginosa). | 1946 | 19970869 | |
| observations on the pathological changes produced by a toxic substance present in blue-green algae (microcystis aeruginosa). | 1946 | 21018103 | |
| oriented movement of blue-green algae on a stretched gel. | 1947 | 20239736 | |
| aqueous chlorophyll preparations from blue-green algae. | 1950 | 14791538 | |
| internal conversion in the photosynthetic mechanism of blue-green algae. | 1. in chroococcus a quantum of light absorbed by phycocyanin has 90 per cent the chance of doing photosynthesis that a quantum absorbed by chlorophyll has. 2. by a process analogous to internal conversion in radioactivity (but with the linear dimensions and the wave length 10(4) times larger) there will be transferred from phycocyanin to chlorophyll see pdf for equation (a number of the order of 100) quanta for every one emitted as fluorescent light by the phycocyanin in the chroococcus cell. 3. ... | 1950 | 15410487 |
| effect of nitrogen-fixing blue-green algae on the growth of rice plants. | 1951 | 14882339 | |
| production in cultural solution of some amino acids by the atmospheric nitrogen-fixing blue-green algae. | 1951 | 14904032 | |
| cutaneous sensitization to blue-green algae. | 1953 | 13084359 | |
| development of toxicity in blue-green algae. | 1953 | 13094595 | |
| relation between pigment content and photosynthetic characteristics in a blue-green algae. | 1. the blue-green alga anacystis nidulans was cultured under steady state conditions at 25 and 39 degrees c. and under several different light intensities to give five different types of cells. 2. cells were submitted to pigment analysis based upon acetone extracts and aqueous extracts obtained by sonic disintegration. the different cell types show a threefold range of chlorophyll content and a fourfold range of phycocyanin content with only minor changes in the chlorophyll/phycocyanin ratio. ce ... | 1955 | 13252232 |
| studies on nitrogen-fixing blue-green algae. i. growth and nitrogen fixation by anabaena cylindrica lemm. | 1955 | 16654787 | |
| photosynthesis and respiration of three blue-green algae. | 1955 | 16654770 | |
| delayed light production by blue-green algae, red algae, and purple bacteria. | 1. blue-green algae, red algae, and purple bacteria all show the emission of delayed light. 2. the action spectra for the production of delayed light by three species of blue-green algae have one broad band with a peak at 620 mmicro. 3. the action spectrum for production of delayed light by the red algae has one peak at 550 mmicro with a shoulder from 600 to 660 mmicro. 4. the emission spectra of the delayed light from both the blue-green and red algae were the same as from the green algae, chlo ... | 1956 | 13286450 |
| the comparative physiology and biochemistry of the blue-green algae. | 1956 | 13363770 | |
| periodic phenomena in photosynthesis as reflected by oxygen exchange of blue-green algae. | 1957 | 13436453 | |
| a simple method of staining nuclei-like bodies in bacteria and blue-green algae with celestine blue b-iron. | 1957 | 13451200 | |
| the nature and distribution of carotenoids in some blue-green algae. | 1957 | 13481328 | |
| light-dark transients in oxygen exchange of blue-green algae. | 1957 | 13436454 | |
| delayed light action spectra of several algae in visible and ultraviolet light. | action spectra for delayed light production by several algae were determined from 250 to 750 mmicro incident light. in the visible portion of the spectrum the action spectra resemble those reported by previous workers for photosynthesis and light emission. blue-green algae had a maximum at 620 mmicro, red algae at 550 mmicro, whereas green and brown algae have action spectra corresponding to chlorophyll and carotenoid absorption. in the ultraviolet portion of the spectrum delayed light is emitte ... | 1958 | 13587909 |
| effects of extracts of blue-green algae on pigment production by serratia marcescens. | 1959 | 13664907 | |
| toxic waterblooms of blue-green algae. | unialgal cultures of several species and strains of blue-green algae, including those most suspected of causing animal deaths, have been grown and found to vary greatly in toxicity. at least four toxic factors have been recognized. one produces fast deaths and is algal in origin. the others produce slow deaths and are bacterial in origin. the fast-death factor (fdf) is an endotoxin that so far has been encountered only with strains of microcystis aeruginosa kütz. emend. elenkin. its production i ... | 1960 | 17421184 |
| pteridines in blue green algae. | 1961 | 16655500 | |
| electron microscope studies on blue-green algae. | several species of blue-green algae were studied in thin sections with the electron microscope. our electron micrographs confirm the view that the cell of blue-green algae is different and simpler in organization than the typical plant or animal cell. on the other hand, the general pattern of ultrastructure is the same as that found in bacteria and streptomyces. the cell boundary is formed by a double membrane which consists of two typical unit membranes. situated in between these membranes is t ... | 1961 | 13741827 |
| isolation of bacteria-free cultures from hormogone-producing blue-green algae. | 1961 | 13874676 | |
| use of antibiotics to purify blue-green algae. | 1961 | 13920023 | |
| preliminary note on a new phycobilin pigment isolated from blue-green algae. | 1962 | 13895764 | |
| [studies on morphologically-differentiated cells in developing cultures of blue-green algae with the aid of triphenyl-tetrazolium chloride]. | 1962 | 13903104 | |
| physiological and biochemical studies on nitrogen fixing blue-green algae. i. on the nature of cellular and extracellular nitrogenous substances formed by nostoc commune. | 1962 | 13918955 | |
| physiological and biochemical studies on nitrogen fixing blue-green algae. | 1962 | 13918956 | |
| a study of several blue-green algae in the electron microscope. | 1962 | 14020147 | |
| the action of lysozyme on several blue-green algae. | 1962 | 14023796 | |
| laboratory studies on the toxins produced by waterblooms of blue-green algae. | 1962 | 13949274 | |
| role of aldolase in photosynthesis. i. enzyme studies with photosynthetic organisms with special reference to blue-green algae. | 1962 | 16655666 | |
| on the pigment absorbing at 750 mmu occurring in some blue-green algae. | 1962 | 16655706 | |
| characteristics of marine blue-green algae with uric acid as nitrogen source. | 1963 | 14058996 | |
| liberation of extracellular nitrogen by 2 nitrogen-fixing blue-green algae. | 1963 | 14097731 | |
| [the effect of concentration of different components of the medium on the growth and nitrogen fixation by blue-green algae]. | 1963 | 14074532 | |
| ultrastructural studies on the blue-green algal symbiont in cyanophora paradoxa korschikoff. | studies conducted on the ultrastructure of cyanophora paradoxa korschikoff (a cryptomonad) have shown that its intracellular symbiont is closely related to unicellular blue-green algae. due to its peculiar habitat, the intracellular symbiont lacks the characteristic cyanophycean double-layered cell wall, but is surrounded by a thin protoplasmic membrane. the protoplasm itself is differentiated into a lamellated chromatoplasm containing photosynthetic pigments, polyphosphate granules, and possibl ... | 1963 | 14086136 |
| intramitochondrial fibers with dna characteristics. i. fixation and electron staining reactions. | chick embryo mitochondria, studied with the electron microscope, show crista-free areas of low electron opacity. these areas are observable after fixation with osmium tetroxide, calcium permanganate, potassium permanganate, formaldehyde, acrolein, acrolein followed by osmium tetroxide, uranyl acetate followed by calcium permanganate, and acetic acid-alcohol. staining of sections with lead hydroxide or uranyl acetate, or with both, resulted in an increased density of a fibrous material within the ... | 1963 | 14086138 |
| [nitrogen fixation in blue-green algae]. | 1963 | 14093557 | |
| [the effect of hydrogen-ion concentration (ph) in the medium and temperature on the growth and nitrogen fixation of blue-green algae]. | 1963 | 14137792 | |
| photochemical reduction of triphosphopyridine nucleotide by cell-free extracts of blue-green algae. | 1963 | 13971359 | |
| algal virus: isolation. | freshwater blue-green algae of the genera lyngbya, plectonema, and phormidium are susceptible to a virus recently isolated from a waste-stabilization pond. electron micrographs of a partially purified preparation show that the viral particle has an icosahedral structure about 66 mmicro in diameter. | 1963 | 13976026 |
| physiological and biochemical studies on nitrogen fixation by blue-green algae. iii. the growth and nitrogen fixation of nostoc commune as influenced by culture conditions. | 1963 | 13980209 | |
| morphology of representative blue-green algae. | 1963 | 14018053 | |
| on the nitrogen fixation by egyptian blue green algae. | 1963 | 5889156 | |
| light-induced absorption-change transients in some blue-green algae. | 1964 | 14197380 | |
| [dynamics of the development of blue-green algae and bacteria in ponds in the environment of kiev]. | 1964 | 14301125 | |
| spectrophotometric evidence for the participation of a quinone in photosynthesis of intact blue-green algae. | 1964 | 14163511 | |
| extracellular polysaccharides of algae: effects on life-support systems. | the amount of extracellular polysaccharide produced by eight species of green and blue-green algae ranges from 174 milligrams per liter to 557 milligrams per liter. most of the polymers are composed of four monosaccharides: a hexose, a pentose, a methyl pentose, and uronic acid. the production of excessive amounts of these photosynthetic end products will undoubtedly influence the effective recycling time of growth media in life-support systems. | 1964 | 14163784 |
| absence of sterols in blue-green algae. | 1964 | 14168239 | |
| studies on photosynthesis using cell free preparations of blue-green algae. | 1964 | 14211158 | |
| [the effect of nitrogen compounds on the growth of blue-green algae and their fixation of molecular nitrogen]. | 1964 | 14237035 | |
| the relationship between blue-green algae and bacteria. | 1965 | 14296764 | |
| light-induced changes in absorbancy and fluorescence of chlorophyllous pigments associated with the pigment systems 1 and 2 in blue-green algae. | 1965 | 14314345 | |
| [changes in the composition and pigment content of blue-green algae in the presence of additional carbon and nitrogen sources]. | 1965 | 5887024 | |
| [comparative study of nitrogen-fixing blue-green algae isolated from various soils of the ussr]. | 1965 | 5887026 | |
| aldolase in blue-green algae. | 1965 | 5830153 | |
| [influence of irradiated nitrogen on the nitrogen fixation of blue-green algae]. | 1965 | 5848610 | |
| the lipid metabolism of blue-green algae. | 1965 | 5856800 | |
| [blue-green algae fixing nitrogen and their practical use. i. current views on the problems of nitrogen fixation by blue-green algae]. | 1965 | 5859921 | |
| [changes in the composition and content of pigments in blue-green algae in relation to the spectral composition of light and of the illumination degree]. | 1965 | 5865393 | |
| [amino acid composition of the blue-green algae phormidium uncinatum (ag) gom]. | 1965 | 5865402 | |
| light-induced rapid absorption changes during photosynthesis. vi. complex reactions in some blue-green algae. | 1965 | 5867545 | |
| photoassimilation of organic compounds by autotrophic blue-green algae. | 1965 | 5867564 | |
| [algicidal properties of aquatic and shore plants of the kremenchug reservoir with respect to the blue-green algae microcystis pulverea and anabaena hassalii]. | 1965 | 5869328 | |
| extracellular products of blue-green algae. | 1965 | 4285448 | |
| microorganisms from the late precambrian of central australia. | an assemblage of structurally and organically well preserved microorganisms, interpreted as both green and blue-green algae, has been found in chert facies of the bitter springs limestone from the upper precambrian of central australia. this appears to be the earliest known occurrence of green algae in the fossil record. these organisms are among the oldest known multicellular and unicellular fossils exhibiting distinct histological preservation. | 1965 | 17742361 |
| significance of the gunflint (precambrian) microflora: photosynthetic oxygen may have had important local effects before becoming a major atmospheric gas. | several categories of biological microstructures 1.9+/- billion years old are here described, illustrated, and referred to a group of early thallophytes that includes the thread bacteria and the blue-green algae. these microstructures were almost surely autotrophic and in the line of evolution toward green-plant photosynthesis, if not themselves oxygen producers. geochemical evidence has been interpreted by some to imply that the contemporaneous atmosphere was essentially anoxygenic (reducing), ... | 1965 | 17773767 |
| blue-green algae: fine structure of the gas vacuoles. | the gas vacuoles seen in several species of blue-green algae under the light microscope are shown by electron microscopy to correspond to packed arrays of cylindrical, electron-transparent vesicles. single vesicles average 75 millimicrons in diameter, range from 0.2 micron to 1.0 micron in length, have conical ends, and are bounded by a single membrane 2 millimicrons wide. the reversible disappearance of gas vacuoles induced by sudden application of pressure is accompanied by a reversible collap ... | 1965 | 17776627 |
| feedback regulation of arginine biosynthesis in blue-green algae and photosynthetic bacteria. | hoare, d. s. (the university of texas, austin), and s. l. hoare. feedback regulation of arginine biosynthesis in blue-green algae and photosynthetic bacteria. j. bacteriol. 92:375-379. 1966.-a number of blue-green algae and photosynthetic bacteria synthesize arginine from glutamate via acetylated intermediates. cell-free extracts of these photosynthetic microorganisms contain an n-acetyl glutamate phosphokinase, which is specifically inhibited by arginine. they also contain a transacetylase whic ... | 1966 | 16562123 |
| the blue-green algae. | 1966 | 5930598 | |
| urease activity in blue-green algae. | the apparent enzymatic hydrolysis of urea has been detected in whole blue-green algae and in cell extracts. urease is present as an intracellullar component in cultures in which no bacterial contaminants are found. the activity in the cells was recovered from the extracts. | 1966 | 5931453 |
| respiratory chain of colorless algae. ii. cyanophyta. | whole cell difference spectra of the blue-green algae, saprospira grandis, leucothrix mucor, and vitreoscilla sp. have one, or at the most 2, broad alpha-bands near 560 mmu. at -190 degrees these bands split to give 4 peaks in the alpha-region for b and c-type cytochromes, but no alpha-band for a-type cytochromes is visible. the nadh oxidase activity of these organisms was shown to be associated with particulate fractions of cell homogenates. the response of this activity to inhibitors differed ... | 1966 | 5932404 |
| the relationship of the hill reaction to photosynthesis: studies with fluoride-poisoned blue-green algae. | 1966 | 5961833 | |
| decarboxylation performed by particulate fractions of two nitrogen-fixing blue-green algae. | 1966 | 5971862 | |
| [effect of light on growth and nitrogen fixation by soil blue-green algae]. | 1966 | 6002933 | |
| the cell wall of rickettsia mooseri. i. morphology and chemical composition. | cell walls prepared by mechanically disrupting intact rickettsia mooseri (r. typhi) were examined in an electron microscope and analyzed chemically. electron micrographs of metal-shadowed and negatively stained rickettsial cell walls revealed no significant differences, except for smaller size, from bacterial cell walls prepared in a similar manner. the chemical composition was complex, and resembled that of gram-negative bacterial cell walls more closely than that of gram-positive bacterial cel ... | 1967 | 6025416 |
| mevalonic acid kinase in euglena gracilis. | the isolation and partial purification of mevalonic acid kinase from euglena gracilis is described. the product of the reaction mva-5-p has been characterized by paper chromatography. the apparent km values for l-mevalonic acid, atp, and mg(2+) are 3 x 10(-5)m, 6 x 10(-3)m, and 9 x 10(-3)m, respectively. a concentration of 1 x 10(-3)mp-hydroxymercuribenzoate completely inactivates the enzyme. a distribution study has shown that mevalonic acid kinase is present in most higher plants and the algae ... | 1967 | 6042361 |
| the tocopherols of the blue-green algae. | 1967 | 6048761 | |
| effect of carbohydrates on the symbiotic growth of planktonic blue-green algae with bacteria. | 1967 | 6052729 | |
| the metabolism of acetate by the blue-green algae, anabaena variabilis and anacystis nidulans. | 1967 | 6077932 | |
| oxygen inhibition of nitrogen fixation in cell-free preparations of blue-green algae. | 1967 | 6078112 | |
| [on the chemical composition of some blue-green algae]. | 1967 | 5609777 | |
| [fine structure of parachromatophores in blue-green algae, anacystis nidulans r]. | 1967 | 5611660 | |
| [nitrogen-fixing ability of some blue-green algae]. | 1967 | 5618084 | |
| [a study of the carbohydrate content in the cells of some nitrogen-fixing blue-green algae]. | 1967 | 5618105 | |
| on the origin of mitosing cells | a theory of the origin of eukaryotic cells ("higher" cells which divide by classical mitosis) is presented. by hypothesis, three fundamental organelles: the mitochondria, the photosynthetic plastids and the (9+2) basal bodies of flagella were themselves once free-living (prokaryotic) cells. the evolution of photosynthesis under the anaerobic conditions of the early atmosphere to form anaerobic bacteria, photosynthetic bacteria and eventually blue-green algae (and protoplastids) is described. the ... | 1967 | 11541392 |
| 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 |
| 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 |
| [role of nitrogen fixing blue-green algae in the soil of mecklenburg]. | 1967 | 4981705 | |
| studies on the toxicity of polymyxin b to blue-green algae. | 1967 | 4292854 | |
| deoxyribonucleic acid of the blue-green algae (cyanophyta). | 1967 | 16350207 | |
| fatty acids in eleven species of blue-green algae: geochemical significance. | analyses of the total lipids of 11 species of blue-green algae showed a simple but qualitatively variable fatty acid composition. the species can be grouped in three categories on the basis of their oleic, linoleic, and linolenic acid content. one species was unusual in that the ten-carbon acid accounts for one-half of its total fatty acid. branched chain acids are absent in the algae, but are major components of marine bacteria. the geochemical significance of the data is discussed. | 1967 | 17807956 |
| relationship between the absorption and emission spectra and the "red drop" in the action spectra of fluorescence in vivo. | the stepanov equation, relating the intensity of emission, f(e)(v), at a given frequency, and that of absorption, k(v), at the same frequency, is applied, in its modified form (see equation 3 in text) to suspensions of chlorella, porphyridium, and anacystis and to chlorophyll solutions. this application can reveal whether the yield of fluorescence, phi(v), is constant, or changes with frequency. in chlorella (green alga) a sharp drop of phi(v) is indicated towards the lower frequencies (longer w ... | 1967 | 19431346 |
| odorous compounds in natural waters. some sulfur compounds associated with blue-green algae. | 1967 | 22247995 | |
| the occurrence and biosynthesis of gamma-linolenic acid in a blue-green alga,spirulina platensis. | the acyl-lipid and fatty acid composition of six blue-green algae, namely,spirulina platensis, myxosarcina chroococcoides, chlorogloea fritschii, anabaena cylindrica, anabaena flos-aquae, and mastigocladus laminosus is reported.all contain major proportions of mono-and digalactosyl diglyceride, sulfoquinovosyl diglyceride, and phosphatidyl glycerol, but none possess lecithin, phophatidyl ethanolamine, or phosphatidyl inositol. trans-3-hexadecenoic acid was absent from all extracts.the analyses p ... | 1968 | 17805841 |