Temporal characteristics of chlorophyll fluorescence quenching and dissolved oxygen concentration as indicators of photosynthetic activity in Chlorella emersonii
A simple chlorophyll fluorescence (CF) measuring system has been implemented to study temporal characteristics of chlorophyll fluorescence induction (CFI) in dark-adapted freshwater algal cultures of Chlorella emersonii. There were two different decay time constants describing the CF quenching: τ₀ (...
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| Published in | Photosynthetica Vol. 46; no. 1; pp. 79 - 83 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Dordrecht
Dordrecht : Springer Netherlands
01.03.2008
Springer Netherlands |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0300-3604 1573-9058 1573-9058 |
| DOI | 10.1007/s11099-008-0014-z |
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| Abstract | A simple chlorophyll fluorescence (CF) measuring system has been implemented to study temporal characteristics of chlorophyll fluorescence induction (CFI) in dark-adapted freshwater algal cultures of Chlorella emersonii. There were two different decay time constants describing the CF quenching: τ₀ (the faster) and τ₁ (the slower) with amplitudes A₀ and A₁, respectively. The relative amplitude of the faster quenching component decreased once the sample was subject to deprivation from dissolved oxygen (DO). The DO concentration of samples was monitored to validate the effects of deprivation from air contact for up to 7 d and to the effect of adding DCMU to the culture (herbicide for blocking electron transport of photosystem 2). CFI analysis and DO measurements showed that the relative amplitude of A₀ to (A₀ + A₁) and the DO concentration can be used as an indication of relative photosynthetic activity, thus allowing for the possibility to classify the physiological state of algal blooms into active and inactive states. |
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| AbstractList | A simple chlorophyll fluorescence (CF) measuring system has been implemented to study temporal characteristics of chlorophyll fluorescence induction (CFI) in dark-adapted freshwater algal cultures of Chlorella emersonii. There were two different decay time constants describing the CF quenching: tau sub(0) (the faster) and tau sub(1) (the slower) with amplitudes A sub(0) and A sub(1), respectively. The relative amplitude of the faster quenching component decreased once the sample was subject to deprivation from dissolved oxygen (DO). The DO concentration of samples was monitored to validate the effects of deprivation from air contact for up to 7 d and to the effect of adding DCMU to the culture (herbicide for blocking electron transport of photosystem 2). CFI analysis and DO measurements showed that the relative amplitude of A sub(0) to (A sub(0) + A sub(1)) and the DO concentration can be used as an indication of relative photosynthetic activity, thus allowing for the possibility to classify the physiological state of algal blooms into active and inactive states. A simple chlorophyll fluorescence (CF) measuring system has been implemented to study temporal characteristics of chlorophyll fluorescence induction (CFI) in dark-adapted freshwater algal cultures of Chlorella emersonii. There were two different decay time constants describing the CF quenching: τ₀ (the faster) and τ₁ (the slower) with amplitudes A₀ and A₁, respectively. The relative amplitude of the faster quenching component decreased once the sample was subject to deprivation from dissolved oxygen (DO). The DO concentration of samples was monitored to validate the effects of deprivation from air contact for up to 7 d and to the effect of adding DCMU to the culture (herbicide for blocking electron transport of photosystem 2). CFI analysis and DO measurements showed that the relative amplitude of A₀ to (A₀ + A₁) and the DO concentration can be used as an indication of relative photosynthetic activity, thus allowing for the possibility to classify the physiological state of algal blooms into active and inactive states. A simple chlorophyll fluorescence (CF) measuring system has been implemented to study temporal characteristics of chlorophyll fluorescence induction (CFI) in dark-adapted freshwater algal cultures of Chlorella emersonii . There were two different decay time constants describing the CF quenching: τ 0 (the faster) and τ 1 (the slower) with amplitudes A 0 and A 1 , respectively. The relative amplitude of the faster quenching component decreased once the sample was subject to deprivation from dissolved oxygen (DO). The DO concentration of samples was monitored to validate the effects of deprivation from air contact for up to 7 d and to the effect of adding DCMU to the culture (herbicide for blocking electron transport of photosystem 2). CFI analysis and DO measurements showed that the relative amplitude of A 0 to (A 0 + A 1 ) and the DO concentration can be used as an indication of relative photosynthetic activity, thus allowing for the possibility to classify the physiological state of algal blooms into active and inactive states. |
| Author | El Khachia, N. -E O'Mongain, E Collins, A |
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| Cites_doi | 10.1007/s11120-005-9018-8 10.1046/j.1365-3040.1999.00475.x 10.1016/0005-2728(75)90209-1 10.1007/BF01584008 10.1109/19.930440 10.1179/037366802125000313 10.1104/pp.63.5.857 10.1007/s11120-004-6430-4 10.1007/s11120-004-5829-2 10.1007/978-3-642-66505-9_8 |
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| References | Kitajima, Butler (CR8) 1975; 376 Butler, Trebst, Avron (CR3) 1977 Acreman (CR1) 1994; 12 Waloszek, Wieckowski (CR10) 2005; 83 Bulgarea, Boukadoum (CR2) 2001; 50 Calvayrac, Bomsel, Laval-Martin (CR4) 1979; 63 Kaiblinger, Dokulil (CR7) 2006; 88 Goh, Schreiber, Hedrich (CR5) 1999; 22 Hendrickson, Förster, Pogson, Chow (CR6) 2005; 84 Smith (CR9) 2002; 24 ref8 ref7 ref9 ref4 ref3 ref6 ref5 ref0 ref2 ref1 |
| References_xml | – volume: 88 start-page: 19 year: 2006 end-page: 30 ident: CR7 article-title: Application of fast repetition rate fluorometry to phytoplankton photosynthetic parameters in freshwater publication-title: Photosynth. Res. doi: 10.1007/s11120-005-9018-8 – volume: 22 start-page: 1057 year: 1999 end-page: 1070 ident: CR5 article-title: New approach of monitoring changes in chlorophyll fluorescence of single guard cells and protoplasts in response to physiological stimuli publication-title: Plant Cell Environ. doi: 10.1046/j.1365-3040.1999.00475.x – volume: 376 start-page: 105 year: 1975 end-page: 115 ident: CR8 article-title: Quenching of chlorophyll fluorescence and primary photochemistry in chloroplasts by dibromothymoquinone publication-title: Biochim. biophys. Acta doi: 10.1016/0005-2728(75)90209-1 – volume: 12 start-page: 193 year: 1994 end-page: 194 ident: CR1 article-title: Algae and cyanobacteria: isolation, culture and long-term maintenance publication-title: J. ind. Microbiol. doi: 10.1007/BF01584008 – volume: 50 start-page: 679 year: 2001 end-page: 689 ident: CR2 article-title: A high-performance instrumentation system to measure the fluorescence kinetics of plants for in vivo photosynthesis research publication-title: IEEE Trans. Instrument. Measure. doi: 10.1109/19.930440 – volume: 24 start-page: 17 year: 2002 end-page: 23 ident: CR9 article-title: analysis of rapid chlorophyll fluorescence induction effects: aspects relating to the study of bryophytes publication-title: J. Bryol. doi: 10.1179/037366802125000313 – volume: 63 start-page: 857 year: 1979 end-page: 865 ident: CR4 article-title: Analysis and characterization of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU)-resistant . I. Growth, metabolic and ultrastructural modifications during adaptation to different doses of DCMU publication-title: Plant Physiol. doi: 10.1104/pp.63.5.857 – start-page: 149 year: 1977 end-page: 167 ident: CR3 article-title: Chlorophyll fluorescence: A probe for electron transfer and energy transfer publication-title: Photosynthesis I – volume: 84 start-page: 43 year: 2005 end-page: 49 ident: CR6 article-title: A simple chlorophyll fluorescence parameter that correlates with the rate coefficient of photoinactivation of Photosystem II publication-title: Photosynth. Res. doi: 10.1007/s11120-004-6430-4 – volume: 83 start-page: 287 year: 2005 end-page: 296 ident: CR10 article-title: Dioxygen uptake by isolated thylakoids from lettuce ( L.): simultaneous measurements of dioxygen uptake, pH change of medium and chlorophyll fluorescence parameters publication-title: Photosynth. Res. doi: 10.1007/s11120-004-5829-2 – ident: ref3 doi: 10.1104/pp.63.5.857 – ident: ref7 doi: 10.1016/0005-2728(75)90209-1 – ident: ref2 doi: 10.1007/978-3-642-66505-9_8 – ident: ref5 doi: 10.1007/s11120-004-6430-4 – ident: ref6 doi: 10.1007/s11120-005-9018-8 – ident: ref0 doi: 10.1007/BF01584008 – ident: ref9 doi: 10.1007/s11120-004-5829-2 – ident: ref8 doi: 10.1179/037366802125000313 – ident: ref4 doi: 10.1046/j.1365-3040.1999.00475.x – ident: ref1 doi: 10.1109/19.930440 |
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| SubjectTerms | air algal blooms Biomedical and Life Sciences Chlorella Chlorella emersonii chlorophyll DCMU dissolved oxygen electron transfer fluorescence freshwater herbicides Life Sciences non-photochemical quenching Original Papers photosystem 2 photosystem II physiological state Plant Physiology sampling zero oxygen tablets |
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| Title | Temporal characteristics of chlorophyll fluorescence quenching and dissolved oxygen concentration as indicators of photosynthetic activity in Chlorella emersonii |
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