Search Reference

Obata, T., Araie, H., Shiraiwa, Y. 2004 Bioconcentration mechanism of selenium by a coccolithophorid, Emiliania huxleyi. Plant Cell Physiol., 45, 1434-1441.
Keywords: coccolithophorid; Emiliania huxleyi; selenite uptake; selenium accumulation
Strain(s): 837 
PubMed: 15564527
DOI: 10.1093/pcp/pch164
Obata, T., Sera, K., Futatsugawa, S., Shiraiwa, Y. 2004 Multi-element analysis of marine microalgae using particle-induced X-ray emission. Mar. Biotechnol., 6, 66-70.
Keywords: coccolithophorid; element concentration; elemental composition; Emiliania huxleyi; multi-element analysis; particle-induced X-ray emmision
Strain(s): 837 
Obata, T., Shiraiwa, Y. 2005 A novel eukaryotic selenoprotein in the haptophyte alga Emiliania huxleyi. J. Biol. Chem., 280, 18462-18468.
Strain(s): 837 
DOI: 10.1074/jbc.M501517200
Ochiai, T., Fukuda, T., Nakata, K., Murakami, T., Tryk, D. A., Koide, Y., Fujishima, A. 2010 Photocalalytic inactivation and removal of algae with TiO2-coated materials. J. Appl. Electrochem., 40, 1737–1742.
Keywords: TiO2 photocatalyst; photoelectrochemical deposition; photocatalytic inactivation; algae
Strain(s): 1668 
DOI: 10.1007/s10800-010-0133-7
Oda, T., Nakamura, A., Okamoto, T., Ishimatsu, A., Muramatsu, T. 1998 Lectin-induced enhancement of superoxide anion production by red tide phytoplankton. Mar. Biol., 131, 383-390.
Strain(s): 6 
Oda, T., Nakamura, A., Shikayama, M., Kawano,I., Ishimatsu, A., Muramatsu, T. 1997 Generation of reactive oxygen species by Raphidophycean phytoplankton. Biosci. Biotechnol. Biochem., 61, 1658-1662.
Keywords: red tide planlton; Raphidophyceae; Chattonella marina; reactive oxygen species; toxicity
Strain(s): 615 
DOI: 10.1271/bbb.61.1658
Oda, T., Sato, Y., Kim, D., Muramatsu, T., Matsuyama, Y., Honjo, T. 2001 Hemolytic activity of Heterocapsa circularisquama (Dinophyceae) and its possible involvement in shellfish toxicity. J. Phycol., 37, 509-516.
Keywords: Heterocapsa circularisquama; hemolysis; shellfish toxicity; harmful phytoplankton
Strain(s): 15 
Ogasawara, N., Miyachi, S. 1969 Effect of wavelength on 14CO2-fixation in Chlorella cells. In Progress in Photosynthesis Research, Vol. 3., Ed. by Metzner, H., Verlag C. Lichtenstein, München, p. 1653-1661.
Strain(s): 2170 
Ogasawara, N., Miyachi, S. 1970 Effects of disalicylidenepropandiamine and near far-red light on 14CO2-fixation in Chlorella cells. Plant Cell Physiol., 11, 411-416.
Strain(s): 2170 
DOI: 10.1093/oxfordjournals.pcp.a074523
Ogasawara, N., Miyachi, S. 1970 Regulation of CO2-fixation in Chlorella by light of varied wavelengths and intensities. Plant Cell Physiol., 11, 1-14.
Strain(s): 2170 
Ogasawara, N., Miyachi, S. 1971 Effects of dark preincubation and chloramphenicol on blue light-induced CO2 incorporation in Chlorella cells. Plant Cell Physiol., 12, 675-682.
Strain(s): 2170 
Ogawa, S., Hirota, K. 2000 Disintegration of chloroplasts during zygote maturation in Closterium ehrenbergii (Zygnematales, Chlorophyta). Int. J. Plant Sci., 161, 609-614.
Keywords: chloroplast; Closterium; conjugation; disintegration of chloroplast; Zygnematales; zygote maturation
Strain(s): 228229 
Ogawa, S., Iokawa, Y., Oba, T., Watanabe, T. 1999 Application of low-vacuum scanning electron microscope (LV SEM) to the classes for plankton observation. Bull. Joetsu Univ. Educ., 19, 99-109 (in Japanese with English summary).
Keywords: freeze-drying method; low-vacuum scanning electron microscope (LV SEM); plankton; scanning electron microscope (SEM)
Strain(s): 229 
Ogawa, S., Shatari, Y. 2004 Spot-like area of F-actin associated with the migrating nucleus in post-mitotic cells of Closterium moniliferum var. submoniliferum (Zygnematales, Chlorophyta). Bull. Joetsu univ. Educ., 23, 705-712.
Keywords: Cell division; Closterium; F-actin; microtubule; Nuclear migration; Zygnematales
Strain(s): 182 
Ogawa, T., Tamoi, M., Kimura, A., Mine, A., Sakuyama, H., Yoshida, E., Maruta, T., Suzuki, K., Ishikawa, T., Shigeoka, S. 2015 Enhancement of photosynthetic capacity in Euglena gracilis by expression of cyanobacterial fructose-1,6-/sedoheptulose-1,7-bisphosphatase leads to increases in biomass and wax ester production. Biotechnol. Biofuels, 8, 80 (article ID).
Keywords: Euglena gracilis; Biofuel; Wax ester; Paramylon; Biomass; fructose-1,6-/sedoheptulose-1,7-bisphosphatase; Photosynthesis
Strain(s): 48 
DOI: 10.1186/s13068-015-0264-5
Ogawa, Y., Kimura, S., Saito, Y., Wada, M. 2012 Infrared study on deuteration of highly-crystalline chitin. Carbohydr. Polym., 90, 650-657.
Keywords: α-Chitin; β-Chitin; Deuteration; FT-IR spectroscopy; X-ray diffraction
Strain(s): 1396 
Ogawa, Y., Kimura, S., Wada, M., Kuga, S. 2010 Crystal analysis and high-resolution imaging of microfibrillar a-chitin from Phaeocystis. J. Struct. Biol., 171, 111-116.
Keywords: a-chitin microfibril; Phaeocystis; FT-IR spectroscopy; X-ray diffraction; high-resolution electron microscopy; lattice imaging
Strain(s): 1396 
Oh, S. J., Kim, D.-I., Sajima, T., Shimasaki, Y., Matsuyama, Y., Oshima, Y., Honjo, T., Yang, H.-S. 2008 Effects of irradiance of various wavelengths from light-emitting diodes on the growth of the harmful dinoflagellate Heterocapsa circularisquama and the diatom Skeletonema costatum. Fish. Sci., 74, 137-145.
Keywords: Heterocapsa circularisquama; irradiance; light wavelengths; light-emitting diode; Skeletonema costatum
Strain(s): 324 
Oh-hama, T., Miyachi, S. 1959 Effect of illumination and oxygen supply upon the levels of pyridine nucleotides in Chlorella cells. Biochim. Biophys. Acta, 34, 202-210.
Strain(s): 2170 
Oh-hama, T., Miyachi, S. 1960 Changes in levels of pyridine nucleotides in Chlorella cells during the course of photosynthesis. Plant Cell Physiol., 1, 155-162.
Strain(s): 2170 
Oh-hama, T., Moriyama, Y., Tamiya, H. 1965 Changes in contents and oxidoreductive states of pyridine nucleotides in Chlorella cells during their life cycle. In Beitr. zur Biochem. und Physiol. von Naturstoffen (Festschr. f. K. Mothes), Gustav Fischer, Jena, p. 341-345.
Strain(s): 2170 
Oh-hama, T., Senger, H. 1978 Spectral effectiveness in chlorophyll and 5-amino levulinic acid formation during regreening of glucose-bleached cells of Chlorella protothecoides. Plant Cell Physiol., 19, 1295-1299.
Keywords: ALA synthesis; blue light effect; Chlorella protothecoides; chlorophyll formation
Strain(s): 227 
Oh-hama, T., Seto, H., Miyachi, S. 1985 13C-Nuclear magnetic resonance studies of the biosynthesis of 5-aminolevulinic acid destined for chlorophyll formation in dark-grown Scenedesmus obliquus. Plant Sci., 42, 153-158.
Keywords: biosynthesis of 5-aminolevulinic acid; chlorophyll biosynthesis; 13C-nuclear magnetic resonance; Scenedesmus obliquus
Strain(s): 2280 
Oh-hama, T., Seto, H., Otake, N., Miyachi, S. 1982 13C-NMR evidence for the pathway of chlorophyll biosynthesis in algae. Biochem. Biophys. Res. Commun., 105, 647-652.
Strain(s): 2280 
Oh-hama, T., Seto, H., Otake, N., Miyachi, S. 1983 13C-NMR spectra of chlorophylls a and b in green algae biosynthetically enriched with [1-13C] glutamate. FEBS Lett., 153, 404-408.
Keywords: 5-aminolevulinic acid; chlorophyll a; chlorophyll b; 13C-NMR; [1-13C]glutamic acid; Scenedesmus obliquus
Strain(s): 2280 
Oh-hama, T., Siebelt, F., Furihata, K., Seto, H., Miyachi, S., Ohmori, K. 1986 31P-NMR studies on inorganic polyphosphates in microalgae. J. Phycol., 22, 485-490.
Keywords: Anabaena cylindrica; Chlorella vulgaris 11h; inorganic polyphosphate; 13P nuclear magnetic resonance of algae
Strain(s): 2280 
Ohko, Y., Nagao, Y., Okano, K., Sugiura, N., Fukuda, A., Yang, Y., Negishi, N., Takeuchi, M., Hanada, S. 2009 Prevention of Phormidium tenue biofilm formation by TiO2 photocatalysis. Microbes. Environ., 24, 241-245.
Keywords: Phormidium tenue; cyanobacteria; TiO2 photocatalyst; anti-biofilm; UV light
Strain(s): 512 
Ohkouchi, Y., Tajima, S., Nomura, M., Itoh, S. 2015 Inflammatory responses and potencies of various lipopolysaccharides from bacteria and cyanobacteria in aquatic environments and water supply systems. Toxicon, 97, 23-31.
Keywords: Lipopolysaccharide (LPS); Purification; Endotoxin; Indigenous bacteria/cyanobacteria; Human monocytic cells; Cytokine secretion
Strain(s): 44946 
DOI: 10.1016/j.toxicon.2015.02.003
Ohmori, K., Hirose, M., Ohmori, M. 1993 An increase in the intracellular concentration of cAMP triggers formation of an algal mat by the cyanobacterium Spirulina platensis. Plant Cell Physiol., 34, 169-171.
Keywords: cyanobacteria (blue-green algae); cyclic AMP; motility; Spirulina platensis
Strain(s): 39 
Ohmori, K., Ohmori, M. 1988 Ammonium assimilation in the blue-green alga Spirulina platensis. Jpn. J. Phycol., 36, 12-16.
Strain(s): 39 
Ohmori, M. 1984 Effects of preillumination on dark nitrogen fixation and respiration by Anabaena cylindrica. Plant Cell Physiol., 25, 125-130.
Keywords: acetylene reduction; Anabaena; dark nitrogen fixation; respiration
Strain(s): 19 
Ohmori, M. 1989 cAMP in Anabaena cylindrica: Rapid changes in cellular levels in response to changes in extracellular environments. Plant Cell Physiol., 30, 911-914.
Keywords: Anabaena cylindrica; cAMP; cyanobacteria; membrane potential
Strain(s): 19 
Ohmori, M., Hasunuma, K., Furukawa, K. 1988 GTP-binding proteins in a cyanobacterium Anabaena cylindrica. Biochem. Biophys. Res. Commun., 151, 215-221.
Strain(s): 19 
Ohmori, M., Hattori, A. 1971 Heterocyst and nitrogen fixation in Anabaena cylindrica. In Proceedings of the Seventh International Seaweed Symposium, University of Tokyo Press, Tokyo, p. 598-601.
Strain(s): 19 
Ohmori, M., Hattori, A. 1971 Nitrogen fixation and heterocysts in the blue-green alga Anabaena cylindrica. Plant Cell Physiol., 12, 961-967.
Strain(s): 19 
Ohmori, M., Hattori, A. 1972 Effect of nitrate on nitrogen-fixation by the blue-green alga Anabaena cylindrica. Plant Cell Physiol., 13, 589-599.
Strain(s): 19 
Ohmori, M., Hattori, A. 1974 Effect of ammonia on nitrogen fixation by the blue-green alga Anabaena cylindrica. Plant Cell Physiol., 15, 131-142.
Strain(s): 19 
Ohmori, M., Hattori, A. 1978 Transfer change in the ATP pool of Anabaena cylindrica associated with ammonia assimilation. Arch. Mikrobiol., 117, 17-20.
Strain(s): 19 
Ohmori, M., Hattori, A. 1980 C2H2 reduction and 15N2 fixation in blue-green algae. In Molybdenum Chemistry of Biological Significance, Eds. by Newton, W. E. & Otsuka, S., Plenum Publishing Co., New York, p. 95-104.
Strain(s): 19 
Ohmori, M., Kanda, J. 1987 H+ and K+ efflux associated with NH4+ uptake in Anabaena cylindrica cells in the dark. J. Gen. Appl. Microbiol., 33, 311-319.
Strain(s): 19 
Ohmori, M., Miyachi, S., Okabe, K., Miyachi, S. 1984 Effects of ammonia on respiration, adenylate levels, amino acid synthesis and CO2 fixation in cells of Chlorella vulgaris 11h in darkness. Plant Cell Physiol., 25, 749-756.
Keywords: adenylate level; amino acid; ammonia effect; Chlorella vulgaris; dark CO2 fixation; respiration
Strain(s): 2160 
Ohmori, M., Oh-hama, T., Furihata, K., Miyachi, S. 1986 Effect of ammonia on cellular pH of Anabaena cylindrica determined with 31P NMR spectroscopy. Plant Cell Physiol., 27, 563-566.
Keywords: ammonia effect; Anabaena cylindrica; 31P NMR spectroscopy; cellular pH
Strain(s): 19 
Ohmori, M., Ohmori, K. 1982 Application of glass fiber paper chromatography to measurement of 15N content of amino acids. Radioisotopes, 31, 651-653.
Keywords: glass fiber paper chromatography; nitrogen-15-amino acid
Strain(s): 19 
Ohmori, M., Ohmori, K. 1985 Differential effects of methionine sulfoximine on light and dark uptake of nitrate by Anabaena cylindrica. Plant Cell Physiol., 26, 957-960.
Keywords: Anabaena cylindrica; methionine sulfoximine; nitrate uptake; nitrite uptake
Strain(s): 19 
Ohmori, M., Ohmori, K., Hasunuma, K. 1988 Rapid change in cyclic 3',5'-AMP concentration triggered by a light-off or light-on signal in Anabaena cylindrica. Arch. Mikrobiol., 150, 203-204.
Strain(s): 19 
Ohmori, M., Ohmori, K., Strotman, H. 1977 Inhibition of nitrate uptake by ammonia in a blue-green alga, Anabaena cylindrica. Arch. Mikrobiol., 114, 225-229.
Strain(s): 19 
Ohmori, M., Saito, T., Ohmori, K. 1985 Occurrence of glutamine-2-oxoacid transaminase in a blue-green alga, Anabaena cylindrica. J. Gen. Appl. Microbiol., 31, 171-176.
Strain(s): 192170 
Ohmori, M., Satoh, Y., Urata, K. 1989 Light-induced accumulation of lactate and succinate in Anabaena cylindrica (Cyanophyta). Arch. Mikrobiol., 151, 101-104.
Strain(s): 19 
Ohmura, Y., Kawachi, M., Kasai, F., Watanabe, M. M., Takeshita, S. 2006 Genetic combinations of symbionts in a vegetatively reproducing lichen, Parmotrema tinctorum, based on its rDNA sequences. Bryologist, 109, 43-59.
Keywords: diversity; ITS rDNA; mycobiont; Parmotrema tinctorum; photobiont; selectivety; Trebouxia corticola; vegetative reproduction.
Strain(s): 1446144714481449145014511452145314541455 
DOI: 10.1639/0007-2745(2006)109[0043:GCOSIA]2.0.CO;2
Ohnuma, M., Kuroiwa, T., Tanaka, K. 2011 Optimization of cryopreservation conditions for the unicellular red alga Cyanidioschyzon merolae. J. Gen. Appl. Micobiol.,, 57, 137-143.
Keywords: cryoinjury; cryopreservation; Cyanidioschyzon merolae; unicellular red alga
Strain(s): 13323377 
Ohnuma, M., Misumi, O., Fujiwara, T., Watanabe, S., Tanaka, K., Kuroiwa, T. 2009 Transient gene suppression in a red alga, Cyanidioschyzon merolae 10D. Protoplasma, 236, 107-112.
Keywords: Antisense suppression; Cyanidioschyzon merolae; Catalase; GFP; Transformation
Strain(s): 3377 
Ohnuma, M., Yokoyama, T., Inouye, T., Sekine, Y., Tanaka, K. 2008 Polyethylene glycol (PEG)-mediated transient gene expression in a Red Alga, Cyanidioschyzon merolae 10D. Plant Cell Physiol., 49, 117-120.
Keywords: Cyanidioschyzon merolae; Hemagglutinin; Polyethylene glycol; Transformation; Transient expression system
Strain(s): 3377 
Ohta, N., Matsuzaki, M., Misumi, O., Miyagishima, S., Nozaki, H., Tanaka, K., Shin-I, T., Kohara, Y., Kuroiwa, T. 2003 Complete sequence and analysis of the plastid genome of the unicellular red alga Cyanidioschyzon merolae. DNA Res., 10, 67-77.
Keywords: Cyanidioschyzon merolae; red algae; plastid; genome sequencing
Strain(s): 13323377 
PubMed: 12755171
DOI: 10.1093/dnares/10.2.67
Ohta, N., Nagashima, H., Kawano, S., Kuroiwa, T. 1992 Isolation of the chloroplast DNA and the sequence of the trnK gene from Cyanidium caldarium strain RK-1. Plant Cell Physiol., 33, 657-661.
Keywords: chloroplast DNA; Cyanidium caldarium; transfer RNA-lysine
Strain(s): 2137 
Ohta, N., Satao, N., Ueda, K., Kuroiwa, T. 1997 Analysis of a plastid gene cluster reveals a close relationship between Cyanidioschyzon and Cyanidium. J. Plant Res., 110, 235-245.
Keywords: Cyanidioschyzon merolae; Cyanidium caldarium; Plastid genome; Rhodophyta
Strain(s): 3377 
Ohta, N., Sato, N., Kuroiwa, T. 1998 Structure and organization of the mitochondrial genome of the unicellular red alga Cyanidioschyzon merolae deduced from the complete nucleotide sequence. Nucleic Acids Res., 26, 5190-5198.
Strain(s): 13323377 
DOI: 10.1093/nar/26.22.5190
Ohta, N., Sato, N., Kuroiwa, T. 1999 The organellar genomes of Cyanidioschyzon merolae. In Enigmatic Microorganisms and Life in Extreme Environments, Ed. by Seckbach, J., Kluwer Academic Publishers, p. 139-149.
Strain(s): 3377 
Ohta, S., Chang, T., Aozasa, O., Kondo, M., Miyata, H. 1992 Sustained production of arachidonic and eicosapentaenoic acids by the red alga Porphyridium purpureum cultured in a light/dark cycle. J. Ferment. Bioengin., 74, 398-402.
Strain(s): 214021682256 
Ohta, S., Miyamoto, K., Miura, Y. 1987 Hydrogen evolution as a consumption mode of reducing equivalents in green algal fermentation. Plant Physiol., 83, 1022-1026.
Strain(s): 2169 
DOI: 10.1104/pp.83.4.1022
Oikawa, E. Ishibashi, Y., 2004 Species specificity of musty odor producing Phormidium tenue in Lake Kamafusa. Wat. Sci. Tech., 49, 41-46.
Keywords: 16S-rDNA sequence; 2-methylisoborneol; musty odor; Phormidium tenue phylogenetic tree
Strain(s): 213033417376512611 
Oikawa, E., Ishibashi, Y., Abe, T., Umetsu, H. 2000 Phylogenetic classification of musty odor and/or toxic compounds producing cyanobacteria. Environ. Eng. Res., 37, 183-191 (in Japanese with English summary).
Keywords: cyanobacteria; musty odor; 16S ribosomal RNA; PCR; phylogenetic trees
Strain(s): 213033417376512 
Oikawa, E., Ohnuma, T., Shimizu, A., Ishibashi, Y. 1994 Phylogenetic studies on musty odor producing cyanobacteria using the 16S ribosomal RNA [16S ribosômu RNA enki-hairetsu no hikaku ni yoru kabi-shû sansei ransô-rui no bunrui]. J. Jpn. Water Works Assoc. [Suidô-Kyôkai Zasshi], 63(12), 56-63 (in Japanese without English title).
Keywords: musty odor; gene; cyanobacteria
Strain(s): 3676512 
Oishi, S., Watanabe, M. F. 1986 Acute toxicity of Microcystis aeruginosa and its cardiovascular effects. Environ. Res., 40, 518-524.
Strain(s): 3349 
Okamoto, N., Inouye, I. 2005 The katablepharids are a distant sister group of the Cryptophyta: a proposal for Katablepharidophyta divisio nova/Kathablepharida phylum novum based on SSU rDNA and beta-tubulin phylogeny. Protist, 156, 163-179.
Keywords: beta-tubulin; Cryptophyta; Katablepharidophyta/Kathablepharida; Katablepharis/Kathablepharis japonica; Leucocrypta; Leucocryptos marina; phylogeny; SSU rDNA
Strain(s): 133313341335 
DOI: 10.1016/j.protis.2004.12.003
Okamoto, T., Kim, D., Oda, T., Matsuoka, K., Ishimatsu, A., Muramatsu, T. 2000 Concanavalin A-induced discharge of glycocalyx of raphidophycean flagellates, Chattonella marina and Heteroshigma akashiwo. Biosci. Biotechnol. Biochem., 64, 1767-1770.
Keywords: red tide; concanavalin A; glycocalyx; phytoplankton
Strain(s): 6 
Okamura, H., Aoyama, I., Liu, D., Maguire, R. J., Pacepavicius, G. J., Lau, Y. L. 2000 Fate and ecotoxicity of the new antifouling compound irgarol 1051 in the aquatic environment. Water Res., 34, 3523-3530.
Keywords: antifouling compound; degradation product; ecotoxicity; fate; berbicide; Irgarol 1051; M1; Seto Inland Sea Japan; transformation
Strain(s): 35 
Okamura, H., Kitano, S., Toyota, S., Harino, H., Thomas, K. V. 2009 Ecotoxicity of the degradation products of triphenylborane pyridine (TPBP) antifouling agent. Chemosphere, 74, 1275-1278.
Keywords: Artemia; bioassay; biocide; biphenyl; marina; Skeletonema
Strain(s): 323 
PubMed: 19095285
DOI: 10.1016/j.chemosphere.2008.11.014
Okamura, H., Piao, M., Aoyama, I., Sudo, M., Okubo, T., Nakamura, M. 2002 Algal growth inhibition by river water pollutants in the agricultural area around Lake Biwa, Japan. Environ. Pollut., 117, 411-419.
Keywords: Algal bioassay; Herbicide; Lake Biwa; Runoff; Simetryn
Strain(s): 35 
Okamura, K. 1992 Growth characteristics of Skeletonema costatum for algal growth potential. Kanagawa-ken Kankyô Kagaku Sentâ Kenkyû Hôkoku, 15, 12-15 (in Japanese with English title).
Strain(s): 324 
Okamura, T., Kondo, R. 2015 Suigetsumonas clinomigrationis gen. et sp. nov., a novel facultative anaerobic nanoflagellate isolated from the meromictic Lake Suigetsu, Japan. Protist, 166, 409-421.
Keywords: Nanoflagellate; Placididea; Stramenopiles; Ultrastructure
Strain(s): 3647 
PubMed: 26202992
DOI: 10.1016/j.protis.2015.06.003
Okano, K., Miyata, N., Ozaki, Y. 2015 Whole genome sequence of the non-microcystin-producing Microcystis aeruginosa strain NIES-44. GenomeA, 3, e00135-15 (article ID).
Strain(s): 44 
DOI: 10.1128/genomeA.00135-15
Okino, T., Matsuda, H., Murakami, M., Yamaguchi, K. 1993 Microginin, an angiotensin-converting enzyme inhibitor from the blue-green alga Microcystis aeruginosa. Tetrahedron Letters, 34, 501-504.
Strain(s): 100 
Okino, T., Matsuda, H., Murakami, M., Yamaguchi, K. 1995 New microviridins, elastase inhibitors from the blue-green alga Microcystis aeruginosa. Tetrahedron, 51, 10679-10686.
Strain(s): 298 
Okino, T., Murakami, M., Haraguchi, R., Munekata, H., Matsuda, H., Yamaguchi, K. 1993 Micropeptins A and B, plasmin and trypsin inhibitors from the blue-green alga Microcystis aeruginosa. Tetrahedron Letters, 34, 8131-8134.
Strain(s): 100 
Okino, T., Sun, Q., Matsuda, H., Murakami, M., Yamaguchi, K. 1997 Nostopeptins A and B, elastase inhibitors from the cyanobacterium Nostoc minutum. J. Nat. Prod., 60, 158-161.
Strain(s): 26 
Okubo, Y., Inoue, T., Yokoto, K. 2012 Estimating bioavailability of soil particulate phosphorus toMicrocystis aeruginosa. J. Appl. Phycol., 24, 1503-1507.
Keywords: Particulate phosphorus; Bioavailable phosphorus; Microcystis aeruginosa; Cyanobacteria; Sequential phosphorus extraction
Strain(s): 44 
Okumura, C., Saffreena, N., Rahman, M. A., Hasegawa, H., Miki, O., Takimoto, A. 2015 Economic efficiency of different light wavelengths and intensities using LEDs for the cultivation of green microalga Botryococcus braunii (NIES-836) for biofuel production. Environ. Prog. Sustain. Energy, 34, 269-275.
Keywords: microalgae; Botryococcus braunii (NIES-836); growth efficiency; light-emitting diodes (LEDS); economic efficiency
Strain(s): 836 
DOI: 10.1002/ep.11951
Okumura, Y., Koyama, J., Takaku, H., Satoh, H. 2001 Influence of organic solvents on the growth of marine microalgae. Arch. Environ. Contam. Toxicol., 41, 123-128.
Strain(s): 6324 
Okuyama, H., Kogame, K., Takeda, S. 1993 Phylogenetic significance of the limited distribution of octadecapentaenoic acid in Prymnesiophytes and photocynthetic dinoflagellates. Polar Biol., 6, 21-26.
Strain(s): 353369 
Okuyama, H., Morita, N., Kogame, K. 1992 Occurrence of octadecapentaenoic acid in lipids of a cold stenothermic alga, prymnesiophyte strain B. J. Phycol., 28, 465-472.
Keywords: Antarctic; cold stenotherm; fatty acid composition; octadecapentaenoic acid; prymnesiophytes; psychrophile
Strain(s): 8 
Omata, T., Murata, N. 1986 Glucolipid synthesis activities in cytoplasmic and the thylakoid membranes from the cytoplasmic Anacystis nidulans. Plant Cell Physiol., 27, 485-490.
Keywords: Anacystis nidulans; cyanobacterium; cytoplasmic membrane; glucolipid; lipid biosynthesis; thylakoid membrane
Strain(s): 21703277 
Omura, T., Umita, T., Aizawa, J., Komatsu, Y., Ishizaki, M., Onuma, M. 1991 Accumulation of extracellular non-volatile organic acids in batch cultures of Chlorella vulgaris and Microcystis aeruginosa. Jpn. J. Water Poll. Res., 14, 615-623 (in Japanese with English summary).
Keywords: Chlorella vulgaris; Microcystis aeruginosa; batch culture; non-volatile organic acids; dissolved organic carbon
Strain(s): 87227 
Onduka, T., Kakuno, A., Kono, K., Ito, K., Mochida, K., Fujii, K. 2012 Toxicity of chlorothalonil to marine organisms. Fish. Sci., 78, 1301-1308.
Keywords: Antifouling biocides; Toxicity; Early-life-stage Toxicity test; Predicted no-effect concentration
Strain(s): 324 
Onduka, T., Mochida, K., Harino, H., Ito, K., Kakuno, A., Fujii, K. 2010 Toxicity of metal pyrithione photodegradation products to marine organisms with indirect evidence for their presence in seawater. Arch. Environ. Contam. Toxicol., 58, 991-997.
Strain(s): 324 
Onduka, T., Ojima, D., Ito, M., Ito, K., Mochida, K., Fujii, K. 2013 Toxicity of degradation products of the antifouling biocide pyridine triphenylborane to marine organisms. Arch. Environ. Contam. Toxicol., 65, 724-732.
Strain(s): 324 
DOI: 10.1007/s00244-013-9945-x
Onduka, T., Ojima, D., Kakuno, A., Mochida, K., Ito, K., Koyama, J., Fujii, K. 2012 Nitrated polycyclic aromatic hydrocarbons in the marine environment: acute toxicities for organisms at three trophic levels. Jpn. J. Environ. Toxicol., 15, 1-10.
Keywords: alga; crustacean, fish, nitro-PAHs; predicted no effect concentrations
Strain(s): 324 
Onduka,T., Ojima, D., Ito, M., Ito, K., Mochida, K., Fujii, K. 2013 Toxicity of the antifouling biocide Sea-Nine 211 to marine algae, crustacea, and a polychaete. Fish. Sci., 79, 999-1006.
Keywords: Risk assessment; Ecological toxicity; Coastal area of Japan; Perinereis nuntia; Sediment toxicity test; No-observed-effect concentration
Strain(s): 324 
Onishi, Y., Mohri, Y., Tuji, A., Ohgi, K., Yamaguchi, A., Imai, I. 2014 The seagrass Zostera marina harbors growth-inhibiting bacteria against the toxic dinoflagellate Alexandrium tamarense. Fish. Sci., 80, 353-362.
Keywords: Toxic blooms; Alexandrium tamarense; Algicidal bacteria; Seagrass; Zostera marina; Mitigation; Prevention
Strain(s): 1 
Onji, M., Nakano, S.-I., Suzuki, S. 2003 Virus-like particles suppress growth of the red-tide-forming marine dinoflagellate Gymnodinium mikimotoi. Mar. Biotechnol., 5, 435-442.
Keywords: Gymnodinium mikimotoi; virus; red tide
Strain(s): 37 
Ono, M., Sawada, K., Kubota, M., Shiraiwa, Y. 2009 Change of the unsaturation degree of alkenone and alkenoate during acclimation to salinity change in Emiliania huxleyi and Gephyrocapsa oceanica with reference to palaeosalinity indicator. Res. Org. Geochem., 25, 53-60.
Strain(s): 837839 
Ono, T., Murata, N., Fujita, T. 1983 Thermal analysis of membrane lipids from the blue-green algae Anacystis nidulans and Anabaena variabilis. Plant Cell Physiol., 24, 635-639.
Keywords: Anabaena variabilis; Anacystis nidulans; blue-green alga; lipid; thermal analysis; thylakoid membrane
Strain(s): 2093 
Ono, Y., Okamura,H., Kawara, O., Aoyama, I., Oda, Y. 1999 Genotoxicity and ecotoxicity of sediment in road runoff. J. Jpn. Soc. Wat. Environ., 22, 561-567 (in Japanese with English summary).
Keywords: road runoff; road sediment; genotoxicity; growth inhibition; acute toxicity
Strain(s): 35 
Onodera, H., Oshima, Y., Watanabe, M. F., Watanabe, M., Bolch, C. J., Blackburn, S., Yasumoto, T. 1996 Screening of paralytic shellfish toxins in freshwater cyanobacteria and chemical confirmation of the toxins in cultured Anabaena circinalis from Australia. In Intergovernmental Oceanographic Commissions of UNESCO, Eds. by Yasumoto, T., Oshima, Y. & Fukuyo, Y., p. 563-566.
Strain(s): 1063106810791084109010931099 
Ooi, T., Kusumi, T., Kakisawa, H., Watanabe, M. M. 1989 Structure of cyanoviridin RR, a toxin from the blue-green alga, Microcystis viridis. J. Appl. Phycol., 1, 31-38.
Keywords: blue-green alga; Microcystis viridis; cyanoviridin RR; microcystin RR, toxins
Strain(s): 102 
Osafune, T. 1973 Three-dimensional structures of giant mitochondria, dictyosomes and “concentric lamellar bodies” formed during the cell cycle of Euglena gracilis (Z) in synchronous culture. J. Electron Microscopy, 22, 51-61.
Strain(s): 48 
Osafune, T., Ehara, T., Ito, A., Hase, E. 1990 Incorporation of cytoplasmic structures by developing proplastids in dark-grown Euglena gracilis cells transferred to an inorganic medium in darkness. J. Electr. Microsc., 39, 168-171.
Keywords: Euglena gracilis; dark proplastid development; incorporation; cytoplasmic structure
Strain(s): 48 
Osafune, T., Ehara, T., Sumida, S., Hase, E. 1985 Interactions between the nucleus and cytoplasmic organelles durihg the cell cycle of Euglena gracilis in synchronized cultures. II. Associations between the nucleus and chloroplasts at an early stage of the cell cycle under photoautotrophic conditions. Plant Cell Physiol., 26, 263-270.
Keywords: cell cycle; chloroplast nucleoid; chloroplast-nucleus connection; chromosome; Euglena gracilis
Strain(s): 48 
Osafune, T., Ehara, T., Tahara, M., Hase, E. 1990 Effects of blue and red light on chloroplast development in dark-grown wax-rich cells of Euglena gracilis transferred to inorganic medium. J. Electr. Microsc., 39, 254-259.
Keywords: Euglena gracilis; blue and red light; chloroplast development
Strain(s): 48 
Osafune, T., Mihara, S., Hase, E., Ohkuro, I. 1972 Electron microscope studies on the vegetative cellular life cycle of Chlamydomonas reinhardi Dangeard in synchronous culture. I. Some characteristics of changes in subcellular structures during the cell cycle, especially in formation of giant mitochondria. Plant Cell Physiol., 13, 211-227.
Strain(s): 2235 
Osafune, T., Mihara, S., Hase, E., Ohkuro, I. 1972 Electron microscope studies on the vegetative cellular life cycle of Chlamydomonas reinhardi Dangeard in synchronous culture. II. Association of mitochondria and the chloroplast at an early developmental stage. Plant Cell Physiol., 13, 981-989.
Strain(s): 2235 
Osafune, T., Mihara, S., Hase, E., Ohkuro, I. 1975 Electron microscope studies on the vegetative cellular life cycle of Chlamydomonas reinhardi Dangeard in synchronous culture. III. Three-dimensional structures of mitochondria in the cells at intermediate stages of the growth phase of the cell cycle. J. Electr. Microsc., 24, 247-252.
Strain(s): 2235 
Osafune, T., Mihara, S., Hase, E., Ohkuro, I. 1975 Formation and division of giant mitochondria during the cell cycle of Euglena gracilis Z in synchronous culture. I. Some characteristics of changes in the morphology of mitochondria and oxygen-uptake activity of cells. Plant Cell Physiol., 16, 313-326.
Strain(s): 48 
Osafune, T., Mihara, S., Hase, E., Ohkuro, I. 1975 Formation and division of giant mitochondria during the cell cycle of Euglena gracilis Z in synchronous culture. II. Modes of division of giant mitochondria. J. Electron Microscopy, 24, 33-39.
Strain(s): 48 
Osafune, T., Mihara, S., Hase, E., Ohkuro, I. 1975 Formation and division of giant mitochondria during the cell cycle of Euglena gracilis Z in synchronous culture. III. Three-dimensional structures of mitochondria after division of giant forms. J. Electron Microscopy, 24, 283-286.
Strain(s): 48 
Osafune, T., Mihara, S., Hase, E., Ohkuro, I. 1976 Electron microscope studies on the vegetative cellular life cycle of Chlamydomonas reinhardi Dangeard in synchronous culture. IV. Mitochondria in dividing cells. J. Electr. Microsc., 25, 261-269.
Strain(s): 2235 
Osafune, T., Schiff. J. A., Hase, E. 1990 Immunogold localization of LHCP II apoprotein in the Golgi of Euglena. Cell Struct. Funct., 15, 99-105.
Keywords: Euglena; Golgi apparatus; immunogold localization; LHCP II
Strain(s): 48 
Osafune, T., Sumida, S., Ehara, T., Hase, E. 1989 Three-dimensional distribution of ribulose-1,5-bisphosphate carboxylase/oxygenase in chloroplasts of actively photosynthesizing cell of Euglena gracilis. J. Electr. Microsc., 38, 399-402.
Keywords: Euglena gracilis Z; immunoelectron microscopy; chloroplast; RuBisCO; three-dimensional distribution
Strain(s): 48 
Osafune, T., Sumida, S., Ehara, T., Kodama, M., Hase, E. 1990 Immunoelectron microscopic evidence for the occurrence of ribulose 1,5-bisphosphate carboxylase/oxygenase in "propyrenoids" of Euglena gracilis. J. Electr. Microsc., 39, 101-104.
Keywords: chloroplast development; Euglena; propyrenoid; ribulose-1,5-bisphosphate carboxylase/oxygenase; immunocytochemistry
Strain(s): 48 
Osafune, T., Yokota, A., Sumida, S., Hase, E. 1990 Immunogold localization of ribulose-1,5-bisphosphate carboxylase with reference to pyrenoid morphology in chloroplasts of synchronized Euglena gracilis cells. Plant Physiol., 92, 802-808.
Strain(s): 48 
DOI: 10.1104/pp.92.3.802
Ota, S., Matsuda, T., Takeshita, T., Yamazaki, T., Kazama, Y., Abe, T., Kawano, S. 2013 Phenotypic spectrum of Parachlorella kessleri (Chlorophyta) mutants produced by heavy-ion irradiation. Biores. Technol., 149, 432-438.
Keywords: Algae; Breeding; Parachlorella; Heavy-ion irradiation; Mutation
Strain(s): 2152 
PubMed: 24135567
DOI: 10.1016/j.biortech.2013.09.079
Ota, S., Oshima, K., Yamazaki, T., Kim, S., Yu, Z., Yoshihara, M., Takeda, K., Takeshita, T., Hirata, A., Bišová, K., Zachleder, V., Hattori, M., Kawano, S. 2016 Highly efficient lipid production in the green alga Parachlorella kessleri: draft genome and transcriptome endorsed by whole-cell 3D ultrastructure. Biotechnol. Biofuels, 9, 13 (article ID).
Keywords: Genome; Green alga; Lipid body; Parachlorella kessleri; RNA-seq; Whole-genome sequence; Transcriptome; 3D-TEM
Strain(s): 2152 
PubMed: 26811738
DOI: 10.1186/s13068-016-0424-2
Ota, S., Vaulot, D. 2012 Lotharella reticulosa sp. nov.: a highly reticulated network forming chlorarachniophyte from the Mediterranean Sea. Protist, 163, 91-104.
Keywords: chlorarachniophytes; Lotharella; Mediterranean Sea; RCC375, RCC376; taxonomy
Strain(s): 2584 
PubMed: 21497132
DOI: 10.1016/j.protis.2011.02.004
Ota, S., Yoshihara, M., Yamazaki, T., Takeshita, T., Hirata, A., Konomi, M., Oshima, K., Hattori, M., Bišová, K., Zachleder, V., Kawano, S. 2016 Deciphering the relationship among phosphate dynamics, electron-dense body and lipid accumulation in the green alga Parachlorella kessleri. Sci Rep, 6, 25731 (article ID).
Strain(s): 2152 
DOI: 10.1038/srep25731
Otsuka, S., Suda, S., Li, R., Matsumoto, S., Watanabe, M. M. 2000 Morphological variability of colonies of Microcystis morphospecies in culture. J. Gen. Appl. Microbiol., 46, 39-50.
Keywords: colony; cyanobacteria; Microcystis; morphology; phycoerythrin; pigment
Strain(s): 843901 
Otsuka, S., Suda, S., Li, R., Watanabe, M., Oyaizu, H., Matsumoto, S., Watanabe, M. M. 1998 16S rDNA sequences and phylogenetic analyses of Microcystis strains with and without phycoerythrin. FEMS Mircobiol. Lett., 164, 119-124.
Keywords: cyanobacterium; Microcystis; 16S rDNA; taxonomy
Strain(s): 1054105510671072108510901143 
Otsuka, S., Suda, S., Li, R., Watanabe, M., Oyaizu, H., Matsumoto, S., Watanabe, M. M. 1999 Phylogenetic relationships between toxic and non-toxic strains of the genus Microcystis based on 16S to 23S internal transcribed spacer sequence. FEMS Mircobiol. Lett., 172, 15-21.
Keywords: cyanobacteria; Microcystis; internal transcribed spacer; phylogeny; microcystin
Strain(s): 44104111105410551058106710681072108510861090109110921105111511171143 
Otsuka, S., Suda, S., Shibata, S., Oyaizu, H., Matsumoto, S., Watanabe, M. M. 2001 A proposal for the unification of five species of the cyanobacterial genus Microcystis Kützing ex Lemmermann 1907 under the rules of the Bacteriological Code. Int. J. Syst. Evol. Microbiol., 51, 873-879.
Keywords: cyanobacteria; DNA-DNA hybridization; Microcystis; taxonomy; unification
Strain(s): 843 
Otsuki, A., Watanabe, M. M., Sugahara, K. 1987 Chlorophyll pigments in methanol extracts from ten axenic cultured diatoms and three green algae as determined by reverse phase HPLC with fluorometric detection. J. Phycol., 23, 406-414.
Keywords: chlorophyll c complex; chlorophyll pigments; diatoms; field desorption mass spectrometry; methanol extracts; reverse phase HPLC
Strain(s): 16565771157225534 
Oyama, Y., Matsushita, B., Fukushima, T., Chen, J., Nagai, T., Imai, A. 2010 Testing the spectral decomposition algorithm (SDA) for different phytoplankton species by a simulation based on tank experiments. Int. J. Remote Sens., 31, 1605-1623.
Strain(s): 4475204803 
Ozaki, K., Ito, E., Tanabe, S., Natsume, K., Tsuji, K., Harada, K. 2009 Electron microscopic study on lysis of a cyanobacterium Microcystis. J. Health Sci., 55, 578-585.
Keywords: cyanobacteria; scanning electron microscope; transmission electron microscope; morphological change; b-cyclocitral; L-lysine
Strain(s): 102298 
Ozaki, K., Ohta, A., Iwata, C., Horikawa, A., Tsuji, K., Ito, E., Ikai, Y., Harada, K-I. 2008 Lysis of cyanobacteria with volatile organic compounds. Chemosphere, 71, 1531-1538.
Keywords: Cyanobacteria; Lysis; Microorganism; Volatile compound; b-Cyclocitral
Strain(s): 73102103112298 
PubMed: 18179811
DOI: 10.1016/j.chemosphere.2007.11.052
Okumura, C., Hasegawa, H., Mizumoto, H., Maki, T., Ueda, K. 2004 Size fractionation of iron compounds in phytoplankton cultures in the presence of chelating ligands. Bunseki Kagaku, 53, 1215-1221 (in Japanese with English summary).
Keywords: iron; speciation; chelating ligands; phytoplankton growth
Strain(s): 324 
Ohara, S., Uehara, T., Kimura, K. Yoshida, T., Fujiwara, S., Mizuguchi, H., Fuse, Y., Yamada, E. 2009 Behavior of humic substances and algal dissolved organic matter as precursors of trihalomethane in Lake Biwa. Bunseki Kagaku, 58, 231-240 (in Japanese with English summary).
Keywords: dissolved organic matter (DOM); humic substances; algal DOM; trihalomethane precursors; Lake Biwa
Strain(s): 109275665 
Oshimi, M., Fujimoto, N., Ohnishi, A., Suzuki, M., Akiba, M., Kunikane, S. 2005 Isolation of bacteria lysing musty odor producing alga Phormidium tenue and its lytic characteristics. J. Jpn. Soc. Wat. Environ., 28, 379-384 (in Japanese with English summary).
Keywords: alga-lytic bacteria; musty odor; Phormidium tenue; Pseudomonas KA6
Strain(s): 96211227244298512817 
Ohtaka,K., Hori, K., Kanno, Y., Seo, M., Ohta, H. 2017 Primitive Auxin Response without TIR1 and Aux/IAA in the Charophyte Alga Klebsormidium nitens. Plant Physiol.,
Strain(s): 2285 
DOI: 10.1104/pp.17.00274

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