Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.

Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.

The study of cyanobacteria isolated from hypersaline environments is of interest because of their metabolic and ecophysiologic versatility in adapting to extreme conditions of salinity, temperature, irradiance and nutrient availability. The effect of salinity at 0‰, 35‰, 70‰ and 100‰ on the growth,...

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Autores principales: Rosales, N, Ortega, J, Mora, R, Morales, E
Formato: Online
Lenguaje:eng
Publicado: Iniversidad Autónoma de Baja California 2005
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/59
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spelling oai:cienciasmarinas.com.mx:article-592019-04-24T17:58:31Z Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp. Influencia de la salinidad sobre crecimiento y composición bioquímica de la cianobacteria Synechococcus sp. Rosales, N Ortega, J Mora, R Morales, E cyanobacterium growth HPLC nutrients nitrate pigments exopolysaccharides salinity Synechococcus cianobacteria crecimiento HPLC nutrientes nitrato pigmentos exopolisacáridos salinidad Synechococcus The study of cyanobacteria isolated from hypersaline environments is of interest because of their metabolic and ecophysiologic versatility in adapting to extreme conditions of salinity, temperature, irradiance and nutrient availability. The effect of salinity at 0‰, 35‰, 70‰ and 100‰ on the growth, dry weight, and pigment, protein, carbohydrate and lipid production of the cyanobacterium Synechococcus sp. was determined. Bioassays were kept in ALGAL medium equivalent to 8 mM NaNO3, constant aeration, 12:12 h photoperiod, 28 ± 2ºC and 156 µmol quanta m–2 s–1 of irradiance. The cyanobacterium was able to grow under all salinities tested. Cell density was optimized at 35‰, with 607.64 ± 14.35 cells mL–1. The highest values of dry weight (3.87 ± 0.03 ng cell–1), chlorophyll a (41.86 ± 0.39 fg cell–1), ß-carotene (9.03 ± 0.15 fg cell–1), zeaxanthin (9.74 ± 0.24 fg cell–1), proteins (1.95 ± 0.05 pg cell–1) and carbohydrates (1.80 ± 0.05 pg cell–1) were obtained at 100‰; however, the highest lipid content (0.45 ± 0.04 pg cell–1) was reached at 0‰. This Synechococcus strain shows halotolerance and the capacity to modulate the production of enriched biomass with pigments, proteins, carbohydrates and lipids in terms of salinity. El estudio de cianobacterias aisladas de ambientes hipersalinos es de interés debido a su versatilidad metabólica y ecofisiológica para adaptarse a condiciones extremas de salinidad, temperatura, irradiancia y limitación de nutrientes. Se reporta el efecto de la salinidad a 0‰, 35‰, 70‰ y 100‰ sobre el crecimiento, masa seca y producción de pigmentos, proteínas, carbohidratos y lípidos de la cianobacteria Synechococcus sp. Los bioensayos fueron mantenidos con medio ALGAL equivalente a 8 mM NaNO3, aireación constante, fotoperiodo 12:12 h, 28 ± 2ºC y 156 µmol quanta m–2 s–1 de irradiancia. La cianobacteria fue capaz de crecer bajo todas las salinidades probadas. La densidad celular fue mejorada a 35‰, con 607.64 ± 14.35 cél mL–1. A 100‰ se alcanzaron los máximos valores de masa seca, clorofila a, ß-caroteno, zeaxantina, proteínas y carbohidratos con 3.87 ± 0.03 ng cél–1; 41.86 ± 0.39 fg cél–1; 9.03 ± 0.15 fg cél–1; 9.74 ± 0.24 fg cél–1; 1.95 ± 0.05 y 1.80 ± 0.05 pg cél–1, respectivamente. Sin embargo, el mayor contenido de lípidos fue alcanzado a 0‰ con 0.45 ± 0.04 pg cél–1. Esta cepa halotolerante de la cianobacteria Synechococcus muestra capacidad para modular la producción de biomasa enriquecida con pigmentos, proteínas, carbohidratos y lípidos en función de la salinidad. Iniversidad Autónoma de Baja California 2005-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/59 10.7773/cm.v31i2.59 Ciencias Marinas; Vol. 31 No. 2 (2005); 349-355 Ciencias Marinas; Vol. 31 Núm. 2 (2005); 349-355 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/59/41
institution Ciencias Marinas
collection OJS
language eng
format Online
author Rosales, N
Ortega, J
Mora, R
Morales, E
spellingShingle Rosales, N
Ortega, J
Mora, R
Morales, E
Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.
author_facet Rosales, N
Ortega, J
Mora, R
Morales, E
author_sort Rosales, N
title Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.
title_short Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.
title_full Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.
title_fullStr Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.
title_full_unstemmed Influence of salinity on the growth and biochemical composition of the cyanobacterium Synechococcus sp.
title_sort influence of salinity on the growth and biochemical composition of the cyanobacterium synechococcus sp.
description The study of cyanobacteria isolated from hypersaline environments is of interest because of their metabolic and ecophysiologic versatility in adapting to extreme conditions of salinity, temperature, irradiance and nutrient availability. The effect of salinity at 0‰, 35‰, 70‰ and 100‰ on the growth, dry weight, and pigment, protein, carbohydrate and lipid production of the cyanobacterium Synechococcus sp. was determined. Bioassays were kept in ALGAL medium equivalent to 8 mM NaNO3, constant aeration, 12:12 h photoperiod, 28 ± 2ºC and 156 µmol quanta m–2 s–1 of irradiance. The cyanobacterium was able to grow under all salinities tested. Cell density was optimized at 35‰, with 607.64 ± 14.35 cells mL–1. The highest values of dry weight (3.87 ± 0.03 ng cell–1), chlorophyll a (41.86 ± 0.39 fg cell–1), ß-carotene (9.03 ± 0.15 fg cell–1), zeaxanthin (9.74 ± 0.24 fg cell–1), proteins (1.95 ± 0.05 pg cell–1) and carbohydrates (1.80 ± 0.05 pg cell–1) were obtained at 100‰; however, the highest lipid content (0.45 ± 0.04 pg cell–1) was reached at 0‰. This Synechococcus strain shows halotolerance and the capacity to modulate the production of enriched biomass with pigments, proteins, carbohydrates and lipids in terms of salinity.
publisher Iniversidad Autónoma de Baja California
publishDate 2005
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/59
_version_ 1715723929527517184

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