Environmental effects on growth and fatty acids in three isolates of Derbesia tenuissima (Bryopsidales, Chlorophyta)

B J Gosch; R J Lawton; Nicholas A Paul; R de Nys; M Magnusson

doi:10.1016/j.algal.2015.02.022

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Environmental effects on growth and fatty acids in three isolates of Derbesia tenuissima (Bryopsidales, Chlorophyta)

Journal article

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Environmental effects on growth and fatty acids in three isolates of Derbesia tenuissima (Bryopsidales, Chlorophyta)

B J Gosch, R J Lawton, Nicholas A Paul, R de Nys and M Magnusson

Algal Research, Vol.9, pp.82-93

2015

DOI: https://doi.org/10.1016/j.algal.2015.02.022

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Abstract

bryopsidales

chlorophyta

environmental manipulation

fatty acids

PUFA(n-3)

seaweed

strain selection

temperature

We quantified the effects of temperature, light and nitrogen availability on the growth and fatty acids (FAs) in three isolates of the green seaweed Derbesia tenuissima to portion the environmental and the genotypic (between isolates) components of variation. Growth ranged from 13 to 33% day-1 and 27% of the variation was between isolates and 48% of variation was explained by light intensity. The content of total FA (TFA) ranged from 34 to 55mgg-1 dw and 49% of the variation was between isolates, while the TFA was 20% lower in the high light and low nitrogen treatment combination. The proportion of omega-3 polyunsaturated FA (PUFA(n-3)) ranged from 31 to 46% of TFA with a strong interactive effect of isolate and temperature. In two isolates, the proportion of PUFA(n-3) increased by 20% under cultivation at low temperature while in a third isolate temperature had no effect. Increases in PUFA(n-3) occurred with a stable content of TFA and high growth rates, leading to net increases in PUFA(n-3) productivity in two isolates. This research highlights the potential for environmental manipulation and strain selection to further improve the productivity and quality of fatty acids in seaweed. © 2015 Elsevier B.V.

Details

Title: Environmental effects on growth and fatty acids in three isolates of Derbesia tenuissima (Bryopsidales, Chlorophyta)
Authors: B J Gosch (Author) - James Cook University
R J Lawton (Author) - James Cook University
Nicholas A Paul (Author) - James Cook University
R de Nys (Author) - James Cook University
M Magnusson (Author) - James Cook University
Publication details: Algal Research, Vol.9, pp.82-93
Publisher: Elsevier BV
Date published: 2015
DOI: 10.1016/j.algal.2015.02.022
ISSN: 2211-9264
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99451200802621
Output Type: Journal article

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