Effect of surfactants on photocatalytic toxicity of TiO2- based nanoparticles toward Vibrio fischeri marine bacteria

2020 ◽  
Vol 116 ◽  
pp. 107936 ◽  
Author(s):  
Hamed Baniamerian ◽  
Panagiotis Tsapekos ◽  
Merlin Alvarado-Morales ◽  
Soheila Shokrollahzadeh ◽  
Maliheh Safavi ◽  
...  
Keyword(s):  
Marine Bacteria ◽  
Vibrio Fischeri

scholarly journals Preliminary ecotoxicity assessment of selected flavour and fragrance compounds using Microtox assay

2019 ◽  
Vol 100 ◽  
pp. 00036
Author(s):  
Wojciech Kołodyński ◽  
Katarzyna Piekarska ◽  
Daniel Strub
Keyword(s):  
Marine Bacteria ◽  
Vibrio Fischeri ◽  
Inorganic Compounds ◽  
Chemical Compounds ◽  
Potential Threat ◽  
Chemical Substances ◽  
Microtox Assay ◽  
Bioluminescence Inhibition ◽  
The Many ◽  
Fragrance Compounds

The bioluminescence inhibition bioassay using marine bacteria Vibrio fischeri is widely used as a tool to assess the toxicity of chemical compounds, because of the many benefits comprising cost and time effectiveness, rapidness, sensitivity, and ease of operation. In addition, the test is used for various types of organic and inorganic compounds. Due to the insolubility of organic compounds in water, a suitable solubilizer should be applied. The ecotoxicity of the solvent should be negligible in relation to marine bacteria. On account of superior human activities the synthesis of new chemical substances is inextricably linked to the emergence of chemical compounds that are a potential threat on environment. A Microtox system utilizing the 81.9% Basic Test with 14 dilutions was applied to pre-evaluate the ecotoxicity of β-cyclocitral oxime, citronellal oxime and perillaldehyde oxime. Substances solutions with an initial concentration of 0.036% in DMSO were prepared. The preliminary results show that the studied scent compounds are characterized by quite high toxicity. In order to confirm the received ecotoxicity values, it is necessary to carry out additional surveys using another range of concentrations and biotests on organisms at each trophic level.

Vibrio fischeriexhibit the growth advantage in stationary-phase phenotype

2013 ◽  
Vol 59 (2) ◽  
pp. 130-135 ◽  
Author(s):  
Branden Petrun ◽  
C. Phoebe Lostroh
Keyword(s):  
Population Growth ◽  
Stationary Phase ◽  
Marine Bacteria ◽  
Bacterial Population ◽  
Vibrio Fischeri ◽  
Light Organ ◽  
Ocean Water ◽  
Euprymna Scolopes ◽  
Bacterial Bioluminescence ◽  
Nutrient Conditions

Vibrio fischeri are bioluminescent marine bacteria that can be isolated from their symbiotic animal partners or from ocean water. A V. fischeri population increases exponentially inside the light organ of the Hawaiian bobtail squid (Euprymna scolopes) while the host is quiescent during the day. This bacterial light organ population reaches stationary phase and then remains high during the night, when the squid use bacterial bioluminescence as a counter-predation strategy. At dawn, host squid release 90%–95% of the light organ contents into the ocean water prior to burying in the sand for the day. As the squid sleeps, the cycle of bacterial population growth in the light organ begins again. These V. fischeri cells that are vented into the ocean must persist under typical marine low nutrient conditions until they encounter another opportunity to colonize a host. We hypothesized that because V. fischeri regularly encounter cycles of feast and famine in nature, they would exhibit the growth advantage in stationary phase (GASP) phenotype. We found that older V. fischeri cells exhibit a Class 2 GASP response in which old cells increase dramatically in frequency while the population of young V. fischeri cells remains almost constant during co-incubation.

Ecotoxicity analysis of cholinium-based ionic liquids to Vibrio fischeri marine bacteria

2014 ◽  
Vol 102 ◽  
pp. 48-54 ◽  
Author(s):  
Sónia P.M. Ventura ◽  
Francisca A. e Silva ◽  
Ana M.M. Gonçalves ◽  
Joana L. Pereira ◽  
Fernando Gonçalves ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Marine Bacteria ◽  
Vibrio Fischeri

Toxicity assessment of various ionic liquid families towards Vibrio fischeri marine bacteria

2012 ◽  
Vol 76 ◽  
pp. 162-168 ◽  
Author(s):  
Sónia P.M. Ventura ◽  
Carolina S. Marques ◽  
Andreia A. Rosatella ◽  
Carlos A.M. Afonso ◽  
Fernando Gonçalves ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Marine Bacteria ◽  
Vibrio Fischeri ◽  
Toxicity Assessment

Ecotoxicity of Nanomaterials on the Basis of Clay Minerals

2013 ◽  
Vol 853 ◽  
pp. 282-287
Author(s):  
Barbora Pjurova ◽  
Helena Raclavska ◽  
Hana Skrobankova
Keyword(s):  
Particle Size ◽  
Clay Minerals ◽  
Marine Bacteria ◽  
Vibrio Fischeri ◽  
Reference Substance ◽  
Significant Dependence ◽  
Council Decision

This article deals with the verification of ecotoxicity of nanomaterials on the basis of selected clay minerals (montmorillonite, kaolinite) and quartz as a reference substance. The ecotoxicity was determined by the inhibition of marine bacteria Vibrio fischeri, with relationship to the particle size and concentration of minerals in water leachate prepared according to Council Decision 2003/33/EC. Statistically significant dependence between inhibition of Vibrio fischeri and the concentration of minerals in water leachate was found for montmorillonite.

Evaluation of the anticancer potential of marine bacteria isolated from a New Caledonia's extreme environment

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
V Guillemard ◽  
L Guentas-Dombrowsky ◽  
E Lobbens ◽  
C Payri
Keyword(s):  
Marine Bacteria ◽  
Extreme Environment

Oxygen Triggering Reversible Modulation of Vibrio fischeri Strain Y1 Bioluminescence In Vivo¶

2004 ◽  
Vol 79 (1) ◽  
pp. 120 ◽  
Author(s):  
Hajime Karatani ◽  
Susumu Yoshizawa ◽  
Satoshi Hirayama
Keyword(s):  
Vibrio Fischeri
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