Effect of Nutrient Starvation under High Irradiance on Lipid and Starch Accumulation in Chlorella fusca (Chlorophyta)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F16%3A00468874" target="_blank" >RIV/61388971:_____/16:00468874 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/16:43890617
Result on the web
<a href="http://dx.doi.org/10.1007/s10126-015-9664-6" target="_blank" >http://dx.doi.org/10.1007/s10126-015-9664-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10126-015-9664-6" target="_blank" >10.1007/s10126-015-9664-6</a>
Alternative languages
Result language
angličtina
Original language name
Effect of Nutrient Starvation under High Irradiance on Lipid and Starch Accumulation in Chlorella fusca (Chlorophyta)
Original language description
The effect of nitrogen and sulphur limitation under high irradiance (PAR) was studied in the green microalga Chlorella fusca (Chlorophyta) in order to follow lipid and/or starch accumulation. Growth, biomass composition and the changes in photosynthetic activity (in vivo chlorophyll a fluorescence) were followed in the trials. The full nutrient culture showed high biomass production and starch accumulation at Day 1, when photosynthetic activity was high. Gradual deprivation (no nutrients added) became evident when photosynthesis was significantly suppressed (Day 3 onwards), which entailed a decrease of maximum relative electron transport rate (rETR(max)) and increase of non-photochemical quenching (NPQ), accompanied by the onset of lipid accumulation and decline in starch content. In N- and S-starved cultures, rETRmax significantly decreased by Day 3, which caused a substantial drop in biomass production, cell number, biovolume and induction of lipid and starch accumulation. High starch content (45-50 % of DW) was found at the initial stage in full nutrient culture and at the stationary phase in nutrient-starved cultures. By the end of the trial, all treatments showed high lipid content (similar to 30 % of DW). The full nutrient culture had higher biomass yield than starved treatments although starch (similar to 0.2 g L-1 day(-1)) and lipid (similar to 0.15 g L-1 day(-1)) productivities were fairly similar in all the cultures. Our results showed that we could enrich biomass of C. fusca (%DW) in lipids using a two-stage strategy (a nutrient replete stage followed by gradual nutrient limitation) while under either procedure, N- or S-starvation, both high lipid and starch contents could be achieved.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EE - Microbiology, virology
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Marine Biotechnology
ISSN
1436-2228
e-ISSN
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Volume of the periodical
18
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
24-36
UT code for WoS article
000378136600003
EID of the result in the Scopus database
2-s2.0-84953354282