Effect of temperature on the growth, total lipid content and fatty acid composition of recently isolated tropical microalgae Isochrysis sp., Nitzschia closterium, Nitzschia paleacea, and commercial species Isochrysis sp. (clone T.ISO)

Renaud, Susan M.; Zhou, Haibo; Parry, David L.; Thinh, Luong-Van; Woo, K. C.

doi:10.1007/bf00003948

Cited by 166 publications

(99 citation statements)

References 19 publications

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“…There was no consistent pattern for production of lipids as influenced by temperature (Renaud et al 1995). Increasing lipid content with increasing temperature had been shown in some algae (Zhu et al 1997), however low temperature resulted in higher lipid production for Nitzschia paleacea (Renaud et al 1995). The present study showed that lipid tended to accumulate at both low and high growth temperatures.…”

Section: Discussioncontrasting

confidence: 52%

“…It was reported that salinity had a great effect on lipid content (Al-Hasan et al 1990;Renaud and Parry 1994), however, our results showed that within the salinity range 22-49 g l )1 the lipid content remained constant except that lipid content increased dramatically at extremely high salt concentration. There was no consistent pattern for production of lipids as influenced by temperature (Renaud et al 1995). Increasing lipid content with increasing temperature had been shown in some algae (Zhu et al 1997), however low temperature resulted in higher lipid production for Nitzschia paleacea (Renaud et al 1995).…”

Section: Discussionmentioning

confidence: 89%

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Response of Growth and Fatty Acid Compositions of Nannochloropsis sp. to Environmental Factors Under Elevated CO2 Concentration

Gao

2006

Biotechnol Lett

162

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Nannochloropsis sp. was grown with different levels of nitrate, phosphate, salinity and temperature with CO 2 at 2,800 ll l )1 . Increased levels of NaNO 3 and KH 2 PO 4 raised protein and polyunsaturated fatty acids (PUFAs) contents but decreased carbohydrate, total lipid and total fatty acids (TFA) contents. Nannochloropsis sp. grew well at salinities from 22 to 49 g l )1 , and lowering salinity enhanced TFA and PUFAs contents. TFA contents increased with the increasing temperature but PUFAs contents decreased. The highest eicosapentaenoic acid (EPA, 20:5x3) content based on the dry mass was above 3% under low N (150 lM NaNO 3 ) or high N (3000 lM NaNO 3 ) condition. Excessive nitrate, low salinity and temperature are thus favorable factors for improving EPA yields in Nannochloropsis sp.

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Section: Discussioncontrasting

confidence: 52%

Section: Discussionmentioning

confidence: 89%

Response of Growth and Fatty Acid Compositions of Nannochloropsis sp. to Environmental Factors Under Elevated CO2 Concentration

Gao

2006

Biotechnol Lett

162

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“…The decrease of the T. pseudonana growth temperature from moderate to 12°C caused a decrease of the saturated (16:0 and 24:0) and an increase of the unsaturated fatty acids. Such changes play an essential role in the maintenance of the fluidity of the hydrophobic membrane regions [15,36,37] thereby providing stability to the metabolomic processes which take place within the membrane, such as photosynthetic light-harvesting and electron transport [38]. Additionally, we observed an increase of the EPA contents in T. pseudonana cells when cultures were transferred from 20 to 12°C.…”

Section: Resultsmentioning

confidence: 65%

Acclimatization of Thalassiosira pseudonana Photosynthetic Membranes to Environmental Temperature Changes

Bojko¹,

Olchawa-Pajor²,

Chyc³

et al. 2017

Proceedings of the 2nd World Congress on New Technologies

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-The greenhouse effect results in warming the planet's surface and a higher ocean heat content. It causes changes of the water circulation frequency and turbulent mixing, delivering warm water, phytoplankton nutrients and CO2 from deeper layers of water to the water surface. All of these changes can have an impact on Earth's ecosystems. In the present study the effect of changing environmental temperature on a model diatom species, Thalassiosira pseudonana was tested under laboratory conditions. The purpose of the work was to analyze the temperature effect on fluidity and chemical composition of the thylakoid membranes. The photosynthetic activity and photosynthetic pigment contents of diatoms adapted to different temperatures were also determined. Our result show decreases of the growth rate and chlorophylls concentration in diatom cells cultured at lower temperature. It was also detected that increases of the polyunsaturated and decreases of saturated fatty acids, as well as changes in lipids:proteins ratio, resulted in stabilization of the thylakoid membranes fluidity and photosynthetic efficiency (Fv/Fm) in a physiological range of the temperature. The result show that the regulation of the concentration and interaction of fatty acids, proteins and pigments is the most important factor in the adaptation strategies of diatoms to the environmental temperature changes. Additionally, the regulation of membrane fluidity was demonstrated as important mechanism of the diatom adaptation to greenhouse effects. We also postulate that the adaptive mechanisms to temperature changes are differently expressed in the polar or hydrophobic regions of photosynthetic membranes.

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“…Entre los principales factores que influyen el desarrollo microalgal, está la temperatura e iluminación, los cuales tienen un efecto sobre la actividad fotosintética, el contenido de pigmentos, velocidad de crecimiento y composición química de la microalga [62]. En las pruebas realizadas en condiciones de invernadero por un periodo de tres días y en diferentes tiempos, se observa que las condiciones abióticas tanto del invernadero (Temperatura y Luminosidad) y de los cultivos (Temperatura y pH), cuyos datos fueron tomados previos a la inyección del CO 2 , no existen diferencias significativas, lo cual indica que no afectarían al desarrollo de las microalgas.…”

Section: Figuraunclassified

Impacto del CO2 sobre la densidad celular en seis cepas de microalgas marinas

Huaynate¹,

Huamán²,

Ávila³

et al. 2015

rev.ion

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ResumenDebido a la gran facilidad con que las microalgas pueden capturar el CO 2 del medio ambiente, resulta interesante evaluar la cantidad y tiempo de ingreso de éste a los cultivos masivos, con la fi nalidad de aumentar la densidad celular. El objetivo del presente estudio fue evaluar los tiempos de inyección del mencionado gas, durante la producción de biomasa que conlleve a una mayor densidad celular, evaluando además, la variación del pH sin alterar la calidad del cultivo. A partir de seis cepas obtenidas del Banco de Germoplasma del Instituto del Mar del Perú, se realizaron cultivos tipo batch de 300L en invernadero, el tiempo de cultivo de la fase exponencial donde se realizaron las pruebas fue de tres días. Los datos se procesaron mediante el análisis del parámetro pendiente de la regresión lineal. Los resultados mostraron que la densidad celular es inversamente proporcional al tiempo de inyección de CO 2 al cultivo. La mayor densidad celular, en las diferentes cepas, se obtuvo a los 5min, excepto para las cepas Chaetoceros gracilis y Nannochloris maculata, las cuales obtienen la mayor densidad a los 10 y 15min, respectivamente. La variación de pH tendió hacia la acidez, en un rango de 8 a 4, sin alterar la densidad celular, por el contrario, los cultivos permanecieron libres de contaminantes. En conclusión, los resultados permiten establecer tiempos adecuados de inyección del CO 2 , los cuales fortalecen la fase de crecimiento exponencial aumentando la densidad poblacional en un 30% sobre lo establecido en esta fase.Palabras clave: microalgas, densidad celular, CO 2 , cultivo masivo. AbstractAs microalgae can capture CO 2 easily from the environment, it is interesting to measure the amount and time control of the entry of this gas into microalgae mass culture, in order to increase cell density. The aim of this study was to evaluate the injection times of CO 2 for biomass production that may lead to a higher cell density, it was also evaluated the pH variation without altering the quality of the crop. The work was made with six strains from the Germplasm Bank of the Instituto del Mar del Perú. There were performed cultures like 300L batch in a greenhouse, the cultivation time of the exponential phase lasted three days. The slope of the regression line parameters was analyzed to process data. The results showed that the cell density is inversely proportional to CO 2 injection time cultivation. The higher cell density 23 Cita: Oscanoa Huaynate AI, Ynga Huamán GA, Chang Ávila IL, Aguilar Samanamud CP. Impacto del CO 2 sobre la densidad celular en seis cepas de microalgas marinas. rev.ion. 2015;28(2):23-32.

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Effect of temperature on the growth, total lipid content and fatty acid composition of recently isolated tropical microalgae Isochrysis sp., Nitzschia closterium, Nitzschia paleacea, and commercial species Isochrysis sp. (clone T.ISO)

Cited by 166 publications

References 19 publications

Response of Growth and Fatty Acid Compositions of Nannochloropsis sp. to Environmental Factors Under Elevated CO2 Concentration

Response of Growth and Fatty Acid Compositions of Nannochloropsis sp. to Environmental Factors Under Elevated CO2 Concentration

Acclimatization of Thalassiosira pseudonana Photosynthetic Membranes to Environmental Temperature Changes

Impacto del CO2 sobre la densidad celular en seis cepas de microalgas marinas

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