Browsing by Author "Herrero, Concepción"
Now showing items 1-20 of 72
-
A capillary zone electrophoresis for determination of thiolic peptides in biological samples
Pérez Rama, Mónica; Abalde, Julio; Herrero, Concepción; Suárez, Cristina; Torres, Enrique (WILEY-VCH Verlag, 2009-06)A new method to improve the analyses of thiolic peptides (cysteine, γGlu-Cys, glutathione, phytochelatins and desglycyl-phytochelatins) derivatized with monobromobimane (mBrB) in complex biological samples by CZE is ... -
A Comparison of the Relative Sensitivity of Structural and Functional Cellular Responses in the Alga Chlamydomonas eugametos Exposed to the Herbicide Paraquat
Franqueira, Dolores; Cid, Ángeles; Torres, Enrique; Orosa García, Miguel; Herrero, Concepción (Springer, 1999-04)The effect of the herbicide paraquat on the freshwater microalga Chlamydomonas eugametos was studied in function of different parameters such as growth, elemental composition, total lipids, and photosynthetic pigments ... -
Acute effects of a prooxidant herbicide on the microalga Chlamydomonas reinhardtii: Screening cytotoxicity and genotoxicity endpoints
Esperanza, Marta; Cid, Ángeles; Herrero, Concepción; Rioboo, Carmen (Elsevier, 2015-08)Since recent evidence has demonstrated that many types of chemicals exhibit oxidative and/or genotoxic potential on living organisms, reactive oxygen species (ROS) formation and DNA damage are currently the best accepted ... -
Alteration of photosynthesis related parameters of Chlamydomonas moewusii stressed by paraquat
Cid, Ángeles; Franqueira, Dolores; Rioboo, Carmen; Prado, Raquel; Herrero, Concepción (Research Trends, 2008)Paraquat toxic action on the freshwater microalga Chlamydomonas moewusii was determined by several physiological parameters. ATP content seems to be the most sensitive parameter analyzed; it was reduced by the lowest ... -
Approach to biomass production of the marine microalga Tetraselmis suecica (kylin) butch using common garden fertilizer and soil extract as cheap nutrient supply in batch cultures
Fábregas, Jaime; Toribio, Luisa; Abalde, Julio; Cabezas, Buenaventura; Herrero, Concepción (Elsevier Applied Science Publishers, 1987)We report the possibility of an economic cultivation of the marine microalga Tetraselmis suecica, using different mixtures of a common garden fertilizer, soil extract, micronutrients and vitamins. Maximum cellular densities ... -
Astaxanthin Production in Cysts and Vegetative Cells of the Microalga Haematococcus Pluvialis Flotow
Herrero, Concepción; Orosa García, Miguel; Abalde, Julio; Rioboo, Carmen; Cid, Ángeles (Nova Science Publishers, 2012) -
Atrazine induced changes in elemental and biochemical composition and nitrate reductase activity in Chlamydomonas reinhardtii
Fernández-Naveira, Ánxela; Rioboo, Carmen; Cid, Ángeles; Herrero, Concepción (Taylor & Francis, 2016)Herbicides play an important role in agricultural practices but the introduction of these compounds into the aquatic environment can have severe consequences for non-target organisms such as microalgae. The ubiquitous green ... -
Atrazine-Induced Chlorosis in Synechococcus elongatus Cells
González Barreiro, Óscar; Rioboo, Carmen; Cid, Ángeles; Herrero, Concepción (Springer, 2004)The effects of a widely used herbicide, atrazine, on the freshwater cyanobacterium Synechococcus elongatus were studied. The cyanobacteria were exposed to varying concentrations of atrazine (0.025, 0.05, 0.1, 0.25, and ... -
Biochemical composition and growth of the marine microalga Dunaliella tertiolecta (Butcher) with different ammonium nitrogen concentrations as chloride, sulphate, nitrate and carbonate.
Fábregas, Jaime; Abalde, Julio; Herrero, Concepción (Elsevier Science Publishers, 1989)Cultures of the marine microalga Dunaliella tertiolecta were grown in ammonium chloride, sulphate, nitrate and carbonate at concentrations ranging from 0.25 to 16 mg.atom N/l. Cells were harvested in the stationary phase ... -
Biomass production and biochemical composition in mass cultures of the marine microalga Isochrysis galbana Parke at varying nutrient concentrations
Fábregas, Jaime; Herrero, Concepción; Cabezas, Buenaventura; Abalde, Julio (Elsevier Science Publishers, 1986)Mass cultures of Isochrysis galbana were carried out with four nutrient concentrations ranging from 2 to 16 mM of NaNO3 and salinity 35‰. An air flow of 15 l/min maintained a CO2 transference rate sufficient to keep the ... -
Biomass production and biochemical variability of the marine microalga Dunaliella tertiolecta (Butcher) with high nutrient concentrations
Fábregas, Jaime; Herrero, Concepción; Abalde, Julio; Cabezas, Buenaventura (Elsevier Science Editors, 1986)Mass cultures of Dunaliella tertiolecta were carried out in 10-l flasks with four nutrient concentrations in order to obtain a maximum biomass production and to find out its biochemical variability. Using these cultural ... -
Cadmium removal by living cells of the marine microalgaTetraselmis suecica
Torres, Enrique; Pérez Rama, Mónica; Abalde, Julio; Herrero, Concepción (2002-09)[Abstract] Cadmium removal by living cells of the marine microalga Tetraselmis suecica was tested in cultures exposed to different cadmium concentrations (0.6, 3, 6, 15, 30 and 45 mg/l). The EC50 for growth was 7.9 mg Cd/l ... -
Cadmium toxicity on the freshwater microalga Chlamydomonas moewusii Gerloff: Biosynthesis of thiol compounds
Suárez, Cristina; Torres, Enrique; Pérez Rama, Mónica; Herrero, Concepción; Abalde, Julio (SETAC-Press (Society of Environmental Toxicology and Chemistry), 2010-09)Cadmium (Cd) toxicity and production of different thiols (phytochelatins, glutathione, γ-Glu-Cys and cysteine) were studied in the microalga Chlamydomonas moewusii exposed to different concentrations of this metal (1, 2, ... -
Cell proliferation alterations in Chlorella cells under stress conditions
Rioboo, Carmen; O’Connor, José Enrique; Prado, Raquel; Herrero, Concepción; Cid, Ángeles (2009-09)[Abstract]Very little is known about growth and proliferation in relation to the cell cycle regulation of algae. The lack of knowledge is even greater when referring to the potential toxic effects of pollutants on microalgal ... -
Changes in protein, carbohydrates and gross energy in the marine microalga Dunaliella tertiolecta (Butcher) by nitrogen concentrations as nitrate, nitrite and urea
Fábregas, Jaime; Abalde, Julio; Cabezas, Buenaventura; Herrero, Concepción (Elsevier Science Publishers, 1989)Cultures of the marine microalga Dunaliella tertiolecta were grown in nitrate, nitrite and urea at concentrations ranging from 0·25 to 16 mg atom. N/litre. Great biochemical variability has been shown in this microalga ... -
Characterization of cell response in Chlamydomonas moewusiicultures exposed to the herbicide paraquat: Induction of chlorosis
Prado, Raquel; Rioboo, Carmen; Herrero, Concepción; Cid, Ángeles (2011-03)[Abstract] The use of herbicides constitutes the principal method of weed control, but the introduction of these compounds into the aquatic environment can provoke severe consequences for non-target organisms such as ... -
Chlamydomonas Reinhardtii Cells Adjust the Metabolism to Maintain Viability in Response to Atrazine Stress
Esperanza, Marta; Seoane, Marta; Rioboo, Carmen; Herrero, Concepción; Cid, Ángeles (Elsevier, 2015-05-19)[Abstract] Chlamydomonas reinhardtii cells were exposed to a sublethal concentration of the widespread herbicide atrazine for 3 and 24 h. Physiological parameters related to cellular energy status, such as cellular ... -
Class III metallothioneins in response to cadmium toxicity in the marine microalga Tetraselmis suecica (Kylin) Butch
Pérez-Rama, Mónica; Herrero, Concepción; Abalde, Julio; Torres, Enrique (Wiley, 2001-09)Microalgae are one of the most important organisms in our ecosystems being seriously affected by metal pollution. However, the microalgae Tetraselmis suecica (Kylin) Butch is tolerant to cadmium; the concentration of this ... -
Comparison of the accumulation of astaxanthin in Haematococcus pluvialis and other green microalgae under N-starvation and high light conditions
Orosa García, Miguel; Valero, J. F.; Herrero, Concepción; Abalde, Julio (Springer, 2001-07)Haematococcus pluvialis gave the highest astaxanthin accumulation rate (2.7 mg l−1 day−1) and total astaxanthin content ( 22.7 mg g−1 biomass). Astaxanthin accumulation in Neochloris wimmeri, Protosiphon botryoides, ... -
Comparison of the sensitivity of different toxicity test endpoints in a microalga exposed to the herbicide paraquat
Prado, Raquel; García Díaz, Rosa; Rioboo, Carmen; Herrero, Concepción; Abalde, Julio; Cid, Ángeles (2009-02)[Abstract]The use of herbicides constitutes the principal method of weed control but the introduction of these compounds into the aquatic environment can provoke severe consequences for non-target organisms such as microalgae. ...