Effects of rare earth elements on growth rate, lipids, fatty acids and pigments in microalgae
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F17%3A00479289" target="_blank" >RIV/61388971:_____/17:00479289 - isvavai.cz</a>
Alternative codes found
RIV/67985939:_____/17:00479289 RIV/00216208:11310/17:10360957
Result on the web
<a href="http://dx.doi.org/10.1111/pre.12180" target="_blank" >http://dx.doi.org/10.1111/pre.12180</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/pre.12180" target="_blank" >10.1111/pre.12180</a>
Alternative languages
Result language
angličtina
Original language name
Effects of rare earth elements on growth rate, lipids, fatty acids and pigments in microalgae
Original language description
The extensive exploitation of rare earth elements (REEs), particularly in electronic technologies and agriculture has concomitantly raised the environmental load. Their resulting effects on primary producers such as microalgae are, however, poorly understood. We have studied these effects on two microalgae of biotechnological interest. The yellow-green alga Trachydiscus minutus (Eustigmatophyceae, Ochrophyta), and the green alga Parachlorella kessleri (Trebouxiophyceae, Chlorophyta) were cultivated in mineral medium supplemented with 10molL(-1) chlorides of REEs: cerium, gadolinium, lanthanum, lutetium, praseodymium, scandium, and with monazite, which is a mineral rich in those elements. We observed growth rates at different mean light intensities (20, 50, 150 and 300molm(-2)s(-1)). The high growth rate of P. kessleri was not affected by the presence of any lanthanide, and decreased proportionally with light intensity (from 0.2 to 0.04 doublings per hour). In contrast, the growth rate of T. minutus was about three times lower compared with P. kessleri, with an optimum at 50molm(-2)s(-1) and decreased at higher or lower light intensities. In the presence of Ce3+, La3+ and Sc3+, the growth rate markedly increased to a value that corresponded to the growth rate in P. kessleri at the same light intensity. The composition and content of pigments and lipids were followed at the optimum light intensity for both species. The lipid content (percentage of dry weight) varied only slightly in the presence of individual rare earths. There was, however, an increase in saturated fatty acids at the expense of polyunsaturated fatty acids. The effect of REEs on pigments was variable: the presence of Ce3+, Gd3+, La3+ and Sc3+ caused an increase in the concentrations of major pigments such as lutein, violaxanthin, -carotene or chlorophylls, while Pr3+ and Lu3+ reduced them.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Phycological Research
ISSN
1322-0829
e-ISSN
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Volume of the periodical
65
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
226-234
UT code for WoS article
000404727400006
EID of the result in the Scopus database
2-s2.0-85018390479