Results 211 to 220 of about 63,158 (225)

A genetically engineered mosquitocidal cyanobacterium

Journal of Applied Phycology, 1994
Larvae of the mosquitoAedes aegypti ingested, and developed into adults, on a diet of 1O of 14 different species of cyanobacteria includingAgmenellum quadruplicatum PR-6 (=Synechococcus PCC7002). Mosquito larvae ingested and grew on cells of PR-6 adapted to growth in the absence of NaCl.
S. Edward Stevens, Randy C. Murphy, William J. Lamoreaux, Lewis B. Coons   +3 more
openaire   +1 more source

Effect of 1.7 MHz ultrasound on a gas-vacuolate cyanobacterium and a gas-vacuole negative cyanobacterium

Colloids and Surfaces B: Biointerfaces, 2004
Ultrasonic signals propagated through medium were directly applied to unicellular cyanobacterium cell surfaces to investigate the biological effects induced by ultrasound. The gas-vacuolate cyanobacterium Microcystis aeruginosa and the gas-vacuole negative cyanobacterium Synechococcus PCC 7942 responded differently to ultrasound. When M. aeruginosa was
Jiao Wen, Tang, Qing Yu, Wu, Hong Wei, Hao, Yifang, Chen, Minsheng, Wu   +4 more
openaire   +2 more sources

Cellular differentiation in the cyanobacterium Nostoc punctiforme

Archives of Microbiology, 2002
Nostoc punctiforme is a phenotypically complex, filamentous, nitrogen-fixing cyanobacterium, whose vegetative cells can mature in four developmental directions. The particular developmental direction is determined by environmental signals. The vegetative cell cycle is maintained when nutrients are sufficient.
John C, Meeks, Elsie L, Campbell, Michael L, Summers, Francis C, Wong   +3 more
openaire   +2 more sources

Toxicity of the cyanobacterium Nodularia spumigena Mertens

Toxicon, 1988
The bloom forming cyanobacterium (blue-green alga) Nodularia spumigena produced a peptide hepatotoxin with an LD50 of 70 micrograms/kg i.p. in mice. The livers of lethally poisoned mice were haemorrhagic and enlarged, the weight doubling to about 10% of total body weight.
M T, Runnegar, A R, Jackson, I R, Falconer   +2 more
openaire   +2 more sources

Novel Virus on Filamentous Arthronema africanum Cyanobacterium

Microbial Ecology, 2020
Widely distributed in water environments and in soil, cyanobacteria are hosts of lysogenic or lytic bacterioviruses. A novel, probably lysogenic virus (phage) for which the name Arthronema africanum virus TR020 (Aa-TR020) is proposed, has been isolated from filamentous freshwater cyanobacterium Arthronema africanum.
Karel Petrzik, Jaromír Lukavský, Igor Koloniuk   +2 more
openaire   +2 more sources

Extracellular glycoconjugates produced by cyanobacterium Wollea saccata

International Journal of Biological Macromolecules, 2011
In order to survive in a highly competitive environment, freshwater or marine phototrophic microorganisms have to develop defense strategies that result in a tremendous diversity of compounds from different metabolic pathways. Recent trends in drug research from natural sources have shown that algae and cyanobacteria are promising organisms to furnish ...
B, Ray, S S, Bandyopadhyay, P, Capek, J, Kopecký, F, Hindák, J, Lukavský   +5 more
openaire   +2 more sources

Serinol-Derived Malyngamides from an Australian Cyanobacterium

Journal of Natural Products, 1999
Serinol derivatives 4a and 4b were isolated from an Australian blue-green alga and characterized by spectroscopic means. Their absolute stereochemistry was established by chemical methods.
F, Wan, K L, Erickson
openaire   +2 more sources

An Unusual Phycoerythrin from a Marine Cyanobacterium

Science, 1984
Phycoerythrin conjugates are reagents for cell sorting and analyses in which the argon-ion laser line at 488 nanometers is used for excitation. Many marine Synechococcus strains contain phycoerythrins with absorption maxima at approximately 490 and 550 nanometers; these maxima indicate the presence of phycourobilin ...
L J, Ong, A N, Glazer, J B, Waterbury
openaire   +2 more sources

Interference of Nucleases in Cyanobacterium Ferredoxin Purification

Preparative Biochemistry, 1995
Isolation of cyanobacterial ferredoxin is normally carried out using nucleases in order to degrade the nucleic acids that accompany this protein during the purification procedure. However, this practice presents the inconvenience that these proteins remain in trace amounts in the purified ferredoxin preparations, although they are not visible by ...
M T, Bes, P, Razquin, C, Gómez-Moreno
openaire   +2 more sources

Maculalactone M from the marine cyanobacterium Kyrtuthrix maculans

Phytochemistry, 2002
Maculalactone M, a seco-dibenzyldiphenyl-4,5,6,7-tetrahydrobenzofuranone, was isolated from the epilithic encrusting cyanobacterium Kyrtuthrix maculans. A possible biogenetic route to this compound is proposed involving cleavage of an allylic hydroperoxide.
Wong, HF, Williams, GA, Brown, GD
openaire   +4 more sources