Nutrient Requirement and Growth of a <i>Synechococcus</i> Species Isolated from Lake Balaton

Mastala, Zoltán; Herodek, Sándor; Balogh, Katalin; Borbély, György; Shafik, Hesham M.; Vörös, Lajos

doi:10.1002/iroh.19960810403

Cited by 10 publications

(6 citation statements)

References 22 publications

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“…muestra una preferencia a crecer a bajas e intermedias irradiancias. Este comportamiento ha sido descrito en poblaciones fitoplanctónicas, incluyendo a cepas de Synechococcus, las cuales se sitúan en la base de la zona eufótica (Mastala et al 1996). Se han realizado diversos trabajos sobre la influencia de la iluminación en cianobacterias y muchas de ellas se caracterizan por crecer de manera óptima a irradiancias bajas e intermedias, como por ejemplo Spirulina platensis (Baldia et al 1991), Pseudanabaena galeata (Romo 1994), Anabaena PCC7120 (Loreto et al 2003) y Anabaena variabilis (Yoon et al 2007).…”

Section: Discussionunclassified

Crecimiento y producción de metabolitos de la cianobacteria marina Synechococcus sp. (Chroococcales) en función de la irradiancia

Rosales-Loaiza¹,

Guevara²,

Lodeiros³

et al. 2007

RBT

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Las cianobacterias de ambientes salinos presentan una versatilidad metabólica inducida por los cambios de salinidad, temperatura e irradiancia, durante los períodos de sequía y lluvias. Por ello es importante la búsqueda en estos ambientes de cianobacterias con potencial biotecnológico para la producción de metabolitos de interés farmacéutico e industrial. Se reporta el crecimiento, masa seca y producción de metabolitos de la cianobacteria Synechococcus sp. MOF-03 en función de la irradiancia (78, 156 y 234 µmol q m-2 s-1). Los cultivos discontinuos por triplicado, fueron mantenidos con aireación constante, fotoperiodo 12:12 h, 30 ±2°C y a 35?. Los máximos valores de proteínas, carbohidratos y lípidos de 530.19 ±11.16, 408.94 ±4.27 y 56.20 ±1.17 µg ml-1 respectivamente, fueron obtenidos a 78 µmol q m-2 s-1. Los pigmentos, analizados por HPLC, mostraron los máximos a 78 µmol q m-2 s-1 para clorofila con 7.72 ±0.16 µg ml-1; y a 234 µmol q m-2 s-1 para β-caroteno y zeaxantina con 0.70 ±0.01 y 0.67 ±0.05 µg ml-1. La relación clorofila a:β-caroteno disminuyó de 17.15 hasta 6.91 a 78 y 234 µmol q m-2 s-1; mientras que la relación β-caroteno:zeaxantina se mantuvo sin cambios entre 78 y 156 µmol q m-2 s-1, con cerca de 1.21 y disminuyó a 234 µmol q m-2 s-1 a 1.04. La cianobacteria produjo la mayor densidad celular y masa seca a 156 µmol q m-2 s-1, con 406.13 ±21.74 x106 cel ml-1 y 1.49 ±0.11 mg ml-1 respectivamente. La producción de exopolisacáridos se mantuvo alrededor de 110 µg ml-1 entre 156 y 234 µmol qm-2 s-1. Así, esta cepa de Synechococcus muestra un gran potencial para la producción de biomasa enriquecida con metabolitos de alto valor comercial.

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Section: Discussionunclassified

Crecimiento y producción de metabolitos de la cianobacteria marina Synechococcus sp. (Chroococcales) en función de la irradiancia

Rosales-Loaiza¹,

Guevara²,

Lodeiros³

et al. 2007

RBT

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“…The negative correlation is depending on the growth rate. In case of relatively high growth rates, more nutrients can be taken up and more leakage occurs under the same growth conditions (Mastala et al 1996). This might be, because they have better metabolic cycle and good ion transport between the cell and the medium.…”

Section: Discussionmentioning

confidence: 99%

Growth ofCyclotella meneghinianaKutz. II. Growth and cell composition under different growth rates with different limiting nutrient

Shafik

Herodek

Présing

et al. 1997

Ann. Limnol. - Int. J. Lim.

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“…Several laboratory studies have been performed to test the growth ability of Synechococcus in conditions of different limiting nutrients (extensively reviewed in [ 3 ] for freshwater strains). There is evidence that ammonium is the preferred form of nitrogen for Synechococcus in culture [ 86 , 87 ], but when ammonium is exhausted, Synechococcus can utilize nitrate, thanks to a regulatory mechanism that can induce expression of nitrate reductases [ 88 ]. Furthermore, under severe inorganic N-limitation, urea present in the dissolved organic matter can become the main N source for cyanobacteria [ 89 ] and for Synechococcus [ 90 ].…”

Section: The Genus Synechococcusmentioning

confidence: 99%

The “Dark Side” of Picocyanobacteria: Life as We Do Not Know It (Yet)

2022

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Picocyanobacteria of the genus Synechococcus (together with Cyanobium and Prochlorococcus) have captured the attention of microbial ecologists since their description in the 1970s. These pico-sized microorganisms are ubiquitous in aquatic environments and are known to be some of the most ancient and adaptable primary producers. Yet, it was only recently, and thanks to developments in molecular biology and in the understanding of gene sequences and genomes, that we could shed light on the depth of the connection between their evolution and the history of life on the planet. Here, we briefly review the current understanding of these small prokaryotic cells, from their physiological features to their role and dynamics in different aquatic environments, focussing particularly on the still poorly understood ability of picocyanobacteria to adapt to dark conditions. While the recent discovery of Synechococcus strains able to survive in the deep Black Sea highlights how adaptable picocyanobacteria can be, it also raises more questions—showing how much we still do not know about microbial life. Using available information from brackish Black Sea strains able to perform and survive in dark (anoxic) conditions, we illustrate how adaptation to narrow ecological niches interacts with gene evolution and metabolic capacity.

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Nutrient Requirement and Growth of a Synechococcus Species Isolated from Lake Balaton

Cited by 10 publications

References 22 publications

Crecimiento y producción de metabolitos de la cianobacteria marina Synechococcus sp. (Chroococcales) en función de la irradiancia

Crecimiento y producción de metabolitos de la cianobacteria marina Synechococcus sp. (Chroococcales) en función de la irradiancia

Growth ofCyclotella meneghinianaKutz. II. Growth and cell composition under different growth rates with different limiting nutrient

The “Dark Side” of Picocyanobacteria: Life as We Do Not Know It (Yet)

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