Počet záznamů: 1
Effects of rare earth elements on growth rate, lipids, fatty acids and pigments in microalgae
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SYSNO ASEP 0479289 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effects of rare earth elements on growth rate, lipids, fatty acids and pigments in microalgae Tvůrce(i) Goecke, Franz (MBU-M)
Vítová, Milada (MBU-M) RID, ORCID
Lukavský, Jaromír (BU-J) RID, ORCID
Nedbalová, L. (CZ)
Řezanka, Tomáš (MBU-M) ORCID
Zachleder, Vilém (MBU-M) ORCIDZdroj.dok. Phycological Research - ISSN 1322-0829
Roč. 65, č. 3 (2017), s. 226-234Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova carotenoids ; chlorophylls ; lanthanides Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology Vědní obor RIV – spolupráce Botanický ústav - Biotechnologie a bionika CEP LO1416 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy TE01020080 GA TA ČR - Technologická agentura ČR TA03011027 GA TA ČR - Technologická agentura ČR GA14-00227S GA ČR - Grantová agentura ČR Institucionální podpora MBU-M - RVO:61388971 ; BU-J - RVO:67985939 UT WOS 000404727400006 EID SCOPUS 85018390479 DOI 10.1111/pre.12180 Anotace 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. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2018
Počet záznamů: 1