Search results for "Photosynthetic pigments"

showing 2 items of 2 documents

Biological and physical modification of carbonate system parameters along the salinity gradient in shallow hypersaline solar salterns in Trapani, Ita…

2017

Abstract We investigated changes in the chemical characteristics of evaporating seawater under the influence of microbial activity by conducting geochemical analyses of the brines and evaporite sediments collected from solar salterns in Trapani, Italy. The microbial activity had a substantial effect on the carbonate system parameters. Dissolved inorganic carbon (DIC) was substantially removed from the brine during the course of evaporation from the seawater to the point where calcium carbonate precipitates, with an accompanying decrease in its carbon isotopic composition (δ 13 C DIC ) to as low as −10.6‰. Although the removal of DIC was due to calcium carbonate precipitation, photosynthesis…

0301 basic medicine010504 meteorology & atmospheric sciencesEvaporiteMineralogyengineering.materialBiogeochemical cycle01 natural sciences03 medical and health scienceschemistry.chemical_compoundMicrobial matGeochemistry and PetrologyCompound-specific isotope analysishemic and lymphatic diseasesDissolved organic carbonPhotosynthetic pigmentSulfate0105 earth and related environmental sciencesHypersaline environmentSalinity030104 developmental biologyCalcium carbonatechemistryBiogeochemical cycle; Carbonate system; Compound-specific isotope analysis; Hypersaline environment; Microbial mat; Photosynthetic pigments;Photosynthetic pigmentsengineeringHaliteCarbonateSeawaterCarbonate systemCompound-specific isotope analysiGeologycirculatory and respiratory physiology
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Boronic Acids of Pharmaceutical Importance Affect the Growth and Photosynthetic Apparatus of Cyanobacteria in a Dose-Dependent Manner

2020

The dynamic increase in the commercial application of antimicrobial derivatives of boronic acids, and potential impact of their presence in aquatic systems, supports the necessity to study the toxicity of these substances towards microorganisms of crucial meaning in the environment. One example of the mentioned derivatives is tavaborole (5-fluoro-substituted benzoxaborole), a pharmaceutical agent with antifungal activity. Cyanobacteria were used as model organisms, which are photoautotrophic prokaryotes, as representative aquatic bacteria and photoautotrophs associated with the plant kingdom. To the best of our knowledge, we investigated this issue for the first time. In order to recognize …

ChlorophyllCyanobacteriaHealth Toxicology and MutagenesisMicroorganismlcsh:Medicinebactericidal activitypharmaceuticalsToxicologyPhotosynthesisaryl boronic acids01 natural sciencescyanobacteriaArticle03 medical and health scienceschemistry.chemical_compoundFood sciencephotosynthetic pigmentsPhotosynthesisCarotenoidchemistry.chemical_classification0303 health sciencesDose-Response Relationship Drugbiology010405 organic chemistry030306 microbiologyChemistryPhycobiliproteinlcsh:RAntimicrobialbiology.organism_classificationBoronic AcidsHalophile0104 chemical sciencesChlorophyllToxins
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