J 2018

Oxygen evolution rate in Antarctic filamentous alga Stigeoclonium sp. evaluated by optodes relates to chlorophyll fluorescence parameters

VÁCZI, Peter

Basic information

Original name

Oxygen evolution rate in Antarctic filamentous alga Stigeoclonium sp. evaluated by optodes relates to chlorophyll fluorescence parameters

Authors

VÁCZI, Peter (703 Slovakia, guarantor, belonging to the institution)

Edition

Czech Polar Reports, Brno, muniPress Masaryk University Brno, 2018, 1805-0689

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10611 Plant sciences, botany

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/00216224:14310/18:00108942

Organization unit

Faculty of Science

Keywords in English

effective quantum yield; oxygen evolution rate; Antarctic phototroph photosynthesis

Tags

Tags

International impact, Reviewed
Změněno: 23/3/2020 16:14, Mgr. Marie Šípková, DiS.

Abstract

V originále

Photosynthetic reactions of algal communities, the essential component of primary production in Polar Regions, are strongly dependent on environmental factors. Among them, availability and amount of light in particular parts of growing season are of major importance. In this paper, the response of the photosynthetic processes of a filamentous freshwater alga to photosynthetically active radiation (PAR) was studied by two approaches. The simultaneous measurements of the effective quantum yield (QYPSII) and oxygen evolution rate (OER) at stepwise increasing photosynthetically active radiation provided data for beneficial correlation analysis of the QYPSII to OER relationship in a wide range of PAR. In this study, the culture of filamentous alga Stigeoclonium sp. was analyzed. The linear relationship between QYPSII and OER was found for the low PAR (the range of 0 – 200 umol.m-2.s-1). At high PAR levels (200 – 1000 umol.m-2.s-1) another linear relationship with different slope was found. The approach combining the fluorometric and oxymetric method might be used for calibration of data in follow up studies and, consequently for evaluation of photosynthetic rates (O2 evolution) from chlorophyll fluorescence data.

Links

EF16_013/0001708, research and development project
Name: ECOPOLARIS - Změny ve struktuře a funkci součástí terestrických polárních ekosystémů (CzechPolar2)
LM2015078, research and development project
Name: Česká polární výzkumná infrastruktura (Acronym: CzechPolar2)
Investor: Ministry of Education, Youth and Sports of the CR