Phytoplankton Lipids: Interspecific Differences and Effects of Nitrate, Silicate and Light-Dark Cycles1

Shifrin, Neil; Chisholm, Sallie W.

doi:10.1111/j.0022-3646.1981.00374.x

Cited by 392 publications

(249 citation statements)

References 31 publications

Supporting

Mentioning

225

Contrasting

Order By: Relevance

“…Although previous studies suggested that nitrogen concentration would contribute significantly to the results (Barclay etal., 1986;Ben-Amotz etal., 1985;Shifrin & Chisholm, 1981), we did not know if other variables would interact with nitrogen concentration to affect biomass or lipid accumulation. This work has shown that conductivity influences the effects seen as a result of nitrogen concentration in three of the four models.…”

Section: Discussionmentioning

confidence: 95%

“…It has been known for some time that nitrogen (or silicon) limitation results in increased lipid accumulation in many species of algae (Ben-Amotz etal., 1985;Collyer & Fogg, 1955;Laing, 1985;Shifrin & Chisholm, 1981;Spoehr & Milner, 1949;Suen et al, 1987;Taguchi et al, 1987;Werner, 1966), but the interaction of nutrient limitation with other environmental factors is poorly understood. Temperature is known to affect photosynthesis and productivity in many algae (McCombie, 1960;Richmond, 1986;Sorokin & Krauss, 1961), but very little literature exists relating temperature to lipid production (see Fogg, 1956;Shifrin & Chisholm, 1981). Most reports of temperature effects are concerned with fatty acid composition rather than quantity of lipid accumulated.…”

Section: Introductionmentioning

confidence: 99%

“…Most reports of temperature effects are concerned with fatty acid composition rather than quantity of lipid accumulated. Shifrin and Chisholm (1981) highlighted one of the central issues in the problem of environmental regulation: lipid production by microalgae is regulated by environmental factors but not always in the same manner for all species. One-factorat-a-time experimentation would not seem to be a fruitful approach in such a complex system.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Environmental control of lipid and biomass production in two diatom species

Chelf¹

1990

J Appl Phycol

View full text Add to dashboard Cite

Biomass and neutral lipid accumulation were examined in Chaetoceros muelleri var. subsalsum and Navicula saprophila using a multivariate, fractional factorial design. Variables included were conductivity, temperature, nitrogen concentration, silicon concentration, time (culture age), and alkalinity. Measured characteristics included nile red fluorescence (as a measure of neutral lipid content) and ash-free dry weight (AFDW). Nitrogen concentration was the variable with the greatest effect on neutral lipid and ash-free dry weight accumulation over the ranges tested. Increasing conductivity in the range examined had a significant, negative impact on neutral lipid accumulation in both of these strains, while increasing alkalinity had a positive effect on lipid and ash-free dry weight in both strains. Experimental designs such as those described here have great potential utility in biological systems with complex interactions.

show abstract

Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Environmental control of lipid and biomass production in two diatom species

Chelf¹

1990

J Appl Phycol

View full text Add to dashboard Cite

show abstract

“…In some extreme cases, it can reach 70-90% of dry weight (Chisti 2007, Li et al 2008. Nitrate and silicate stress has effect on the lipid content in a variety of phytoplankton (Shifrin and Chisholm 1981). Illman et al (2000) studied five strains of the green alga Chlorella, and reported an increase in lipid content in all five strains when grown in low-nitrogen media.…”

Section: Introductionmentioning

confidence: 99%

Impact of nitrogen regime on fatty acid profiles of Desmodesmus quadricaudatus and Chlorella sp. and ability to produce biofuel

Shafik

Saad

El‐Serehy

2015

Acta Botanica Hungarica

View full text Add to dashboard Cite

Microalgae have emerged as one of the most promising sources for fatty acid production. Since the various fatty acid profiles (chain length, degree of unsaturation, and branching of the chain) of the different sources influence biodiesel fuel properties, it is important to possess data on how the presence of NaNO 3 as nitrogen source can influence the profile of produced fatty acids from algae. The fatty acid profiles of Desmodesmus quadricaudatus and Chlorella sp. were detected in pure batch cultures experiments. BG-11 nitrogen free medium and the medium contained 1.5 g NaNO 3 l -1 were used in this investigation. At late stationary growth phase in nitrogen free medium, Chlorella sp. produced 58.39% saturated fatty acids and 41.60% unsaturated fatty acids. While in medium contained 1.5 g NaNO 3 l -1 Chlorella sp. produced 62.08% saturated fatty acids and 37.92% unsaturated fatty acids. In nitrogen free medium D. quadricaudatus produced 66.92% saturated fatty acids and 33.07% unsaturated fatty acids. While in cultures contained 1.5 g NaNO 3 l -1 D. quadricaudatus produced 51.62% saturated fatty acids and 48.37% unsaturated fatty acids.The fatty acid profile of Chlorella sp. and D. quadricaudatus that isolated from Egyptian water body and grown in nitrogen free medium may be suitable for biodiesel production. The results discussed and compared to fatty acid profiles produced by other algal species.

show abstract

“…The main constraint of artificial cultivation is the low biomass concentration achieved, c.a. 0.1% (w/w) [3], which makes the separation process difficult and expensive. However, the importance of microalgae in aquaculture is large because they start the food chain.…”

Section: Introductionmentioning

confidence: 99%

Growth aspects of the marine microalga Nannochloropsis gaditana

Rocha

García

Henriques

2003

Biomolecular Engineering

173

View full text Add to dashboard Cite

Nannochloropsis is well appreciated in aquaculture due to its nutritional value and the ability to produce valuable chemical compounds, such as pigments (zeaxanthin, astaxanthin. . .) and polyunsaturated fatty acids (EPA). Commercial exploitation needs high cell densities but the low growth rate and the small size of cells are practical difficulties. To increase biomass concentration the positive effect of several factors was evident: (i) pH:/8 control (with dilute Tris Á/HCl buffer); (ii) the continuous illumination (no evidence of photo-inhibition was observed); (iii) a quite large temperature range (259/5 8C); (iv) the presence of organic carbon source (with the danger of contamination); (v) the presence of urea as an additional nitrogen source (10 mM); (vi) a small air flow rate with large bubbles can be more efficient for CO 2 mass transfer (associated to reduced shearing). #

show abstract

Phytoplankton Lipids: Interspecific Differences and Effects of Nitrate, Silicate and Light-Dark Cycles1

Cited by 392 publications

References 31 publications

Environmental control of lipid and biomass production in two diatom species

Environmental control of lipid and biomass production in two diatom species

Impact of nitrogen regime on fatty acid profiles of Desmodesmus quadricaudatus and Chlorella sp. and ability to produce biofuel

Growth aspects of the marine microalga Nannochloropsis gaditana

Contact Info

Product

Resources

About