The synergistic effect of Selenium (selenite, -SeO32-) dose and irradiance intensity in Chlorella cultures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F17%3A00507324" target="_blank" >RIV/61388971:_____/17:00507324 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/17:43895468

Result on the web

<a href="https://amb-express.springeropen.com/articles/10.1186/s13568-017-0348-7" target="_blank" >https://amb-express.springeropen.com/articles/10.1186/s13568-017-0348-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s13568-017-0348-7" target="_blank" >10.1186/s13568-017-0348-7</a>

Result language

angličtina

Original language name

The synergistic effect of Selenium (selenite, -SeO32-) dose and irradiance intensity in Chlorella cultures

Original language description

Microalgae are able to metabolize inorganic selenium (Se) to organic forms (e.g. Se-proteins) nevertheless at certain Se concentration culture growth is inhibited. The aim of this work was to confirm the hypothesis that the limit of Se tolerance in Chlorella cultures is related to photosynthetic performance, i.e. depends on light intensity. We studied the relation between the dose and irradiance to find the range of Se tolerance in laboratory and outdoor cultures. At low irradiance (250 mu mol photons m(-2) s(-1)), the daily dose of Se below 8.5 mg per g of biomass (< 20 mu M) partially stimulated the photosynthetic activity (relative electron transport rate) and growth of Chlorella cultures (biomass density of similar to 1.5 g DW L-1) compared to the control (no Se added). It was accompanied by substantial Se incorporation to microalgae biomass (similar to 0.5 mg Se g(-1) DW). When the Se daily dose and level of irradiance were doubled (16 mg Se g(-1) DW 500 mu mol photons m(-2) s(-1)), the photosynthetic activity and growth were stimulated for several days and ample incorporation of Se to biomass (7.1 mg g(-1) DW) was observed. Yet, the same Se daily dose under increased irradiance (750 mu mol photons m(-2) s(-1)) caused the synergistic effect manifested by significant inhibition of photosynthesis, growth and lowered Se incorporation to biomass. In the present experiments Chl fluorescence techniques were used to monitor photosynthetic activity for determination of optimal Se doses in order to achieve efficient incorporation without substantial inhibition of microalgae growth when producing Se-enriched biomass.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10606 - Microbiology

Project

<a href="/en/project/LO1416" target="_blank" >LO1416: Algatech plus</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

AMB Express

ISSN

2191-0855

e-ISSN

—

Volume of the periodical

7

Issue of the periodical within the volume

MAR 7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

56

UT code for WoS article

000395980800001

EID of the result in the Scopus database

2-s2.0-85014780026