9 documents found, page 1 of 1
LipidTOX: A fatty acid-based index efficient for ecotoxicological studies with ...
Duarte, Bernardo; Feijão, Eduardo; Franzitta, Marco; Duarte, Irina A.; de Carvalho, Ricardo Cruz; Cabrita, Maria Teresa; Marques, João CarlosContaminants, when present above certain thresholds, can induce physiological constraints to organisms, namely diatoms, a model group representative of marine phytoplankton, triggering feedback mechanisms, such as changes in cell's fatty acid profiles, that can be used as biomarkers towards xenobiotic exposure. Having this in mind and considering the ecological relevance of diatom fatty acid profiles as well as...
LipidTOX: A fatty acid-based index efficient for ecotoxicological studies with ...
Duarte, Bernardo; Feijão, Eduardo; Franzitta, Marco; Duarte, Irina A.; Cruz De Carvalho, Ricardo; Cabrita, Maria Teresa; Marques, João CarlosContaminants, when present above certain thresholds, can induce physiological constraints to organisms, namely diatoms, a model group representative of marine phytoplankton, triggering feedback mechanisms, such as changes in cell’s fatty acid profiles, that can be used as biomarkers towards xenobiotic exposure. Having this in mind and considering the ecological relevance of diatom fatty acid profiles as well as...
LipidTOX: a fatty acid-based index efficient for ecotoxicological studies with ...
Duarte, Bernardo; Feijão, Eduardo; Franzitta, Marco; Duarte, Irina A.; de Carvalho, Ricardo Cruz; Cabrita, Maria Teresa; Marques, João CarlosContaminants, when present above certain thresholds, can induce physiological constraints to organisms, namely diatoms, a model group representative of marine phytoplankton, triggering feedback mechanisms, such as changes in cell’s fatty acid profiles, that can be used as biomarkers towards xenobiotic exposure. Having this in mind and considering the ecological relevance of diatom fatty acid profiles as well as...
Unlocking Kautsky’s dark box: Development of an optical toxicity classification...
Duarte, Bernardo; Feijão, Eduardo; Carvalho, Ricardo Cruz de; Franzitta, Marco; Marques, João Carlos; Caçador, Maria Isabel ViolanteChlorophyll a induction curves, or Kautsky curves, have been extensively used to study physiological stress conditions in phototrophic organisms, with the analysis of several derived parameters. Nevertheless, these variables use only about 10 % of the information comprised in the complete Kautsky curve dataset, leaving 90 % of the photochemical data within an underutilized dark box, that is not translated into ...
Unlocking Kautsky’s dark box: development of an optical toxicity classification...
Duarte, Bernardo; Feijão, Eduardo; Cruz de Carvalho, Ricardo; Franzitta, Marco; Carlos Marques, João; Caçador, Isabel; Cabrita, Maria TeresaChlorophyll a induction curves, or Kautsky curves, have been extensively used to study physiological stress conditions in phototrophic organisms, with the analysis of several derived parameters. Nevertheless, these variables use only about 10 % of the information comprised in the complete Kautsky curve dataset, leaving 90 % of the photochemical data within an underutilized dark box, that is not translated into ...
Toxicity Going Nano: Ionic Versus Engineered Cu Nanoparticles Impacts on the Ph...
Franzitta, Marco; Feijão, Eduardo; Cabrita, Maria Teresa; Gameiro, Carla; Matos, Ana Rita; Marques, João Carlos; Goessling, Johannes W.Increasing input of Metal Engineered Nano Particles (MeENPs) in marine ecosystems has raised concerns about their potential toxicity on phytoplankton. Given the lack of knowledge on MeENPs impact on these important primary producers, the effects of Copper Oxide (CuO) ENPs on growth, physiology, pigment profiles, fatty acid (FA) metabolism, and oxidative stress were investigated in the model diatom Pheodactylum ...
Marine heat waves alter gene expression of key enzymes of membrane and storage ...
Feijão, Eduardo; Franzitta, Marco; Cabrita, Maria Teresa; Caçador, Isabel; Duarte, Bernardo; Gameiro, Carla; Matos, Ana RitaAcross the globe, heat waves are getting more intense and frequent. Diatoms are a major group of microalgae at the base of the marine food webs and an important source of long chain polyunsaturated fatty acids that are transferred through the food web. The present study investigates the possible impacts of temperature increase on lipid classes and expression of genes encoding enzymes related to lipid metabolism...
Heat wave impacts on the model diatom Phaeodactylum tricornutum: Searching for ...
Feijão, Eduardo; Gameiro, C.; Franzitta, Marco; Duarte, Bernardo; Caçador, Isabel; Cabrita, Maria Teresa; Matos, Ana RitaGlobal warming is increasing the frequency and intensity of extreme thermal events, with inevitable consequences for marine ecosystems and organisms. Phytoplankton is at the base of marine food webs and diatoms are major contributors to global primary production. Therefore, environmental changes, such as heat, influencing growth, physiology and biochemical composition of diatoms, impact other organisms at highe...
Heat wave impacts on the model diatom Phaeodactylum tricornutum: searching for ...
Feijão, Eduardo; Gameiro, Carla; Franzitta, Marco; Duarte, Bernardo; Caçador, Isabel; Cabrita, Maria Teresa; Matos, Ana RitaGlobal warming is increasing the frequency and intensity of extreme thermal events, with inevitable consequences for marine ecosystems and organisms. Phytoplankton is at the base of marine food webs and diatoms are major contributors to global primary production. Therefore, environmental changes, such as heat, influencing growth, physiology and biochemical composition of diatoms, impact other organisms at highe...