The use of chlorophyll fluorescence to predict CO 2 fixation during photosynthetic oscillations
1990; Royal Society; Volume: 241; Issue: 1300 Linguagem: Inglês
10.1098/rspb.1990.0066
ISSN1471-2954
Autores Tópico(s)Atmospheric and Environmental Gas Dynamics
ResumoRestricted accessMoreSectionsView PDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmail Cite this article Keiller Don R. and Walker David Alan 1990The use of chlorophyll fluorescence to predict CO2 fixation during photosynthetic oscillationsProc. R. Soc. Lond. B.24159–64http://doi.org/10.1098/rspb.1990.0066SectionRestricted accessArticleThe use of chlorophyll fluorescence to predict CO2 fixation during photosynthetic oscillations Don R. Keiller Google Scholar Find this author on PubMed Search for more papers by this author and David Alan Walker Google Scholar Find this author on PubMed Search for more papers by this author Don R. Keiller Google Scholar Find this author on PubMed and David Alan Walker Google Scholar Find this author on PubMed Published:23 July 1990https://doi.org/10.1098/rspb.1990.0066AbstractThe relation between photosynthetic electron transport and chlorophyll a fluorescence is of fundamental importance and would have immense practical potential in measurement if properly understood. For this reason we have examined some aspects of this relation in the context of recently proposed models. Chlorophyll fluorescence quenching was measured (together with quantum yields of CO2 fixation) at different light intensities and during oscillations in photosynthesis induced by abrupt changes in CO2 concentration or re-illumination after 1 min darkness. The relation between (i) the quantum yield of open photosystem II (PSII) centres (ϕp) and non-photochemical quenching (qN), and (ii) the quantum yield of CO2 fixation (ϕS) and the fluorescence parameter Fm–Fs/Fm were examined for barley and wheat at different light intensities, CO2 concentrations, and temperatures. From this data two empirical equations (i) ϕs = qp x (0.153–0.131 x qN) and (ii) ϕs = ((Fm–Fs/Fm)–0.0085)/7.94, which related ϕs to chlorophyll-fluorescence parameters, were obtained. Both equations allowed good predictions to be made of CO2 fixation during oscillatory behaviour. However, further examination of the relation between ϕp and qN showed that this is not always linear. Moreover it is complicated by the fact that it is impossible to measure dark-level fluorescence (F0) without disturbing photosynthesis. For these and other reasons it was concluded that the relation between ϕs and Fm–Fs/Fm provides a better indicator of photosynthetic electron transport particularly under conditions in which F0 and qN are likely to show large variations.FootnotesThis text was harvested from a scanned image of the original document using optical character recognition (OCR) software. As such, it may contain errors. Please contact the Royal Society if you find an error you would like to see corrected. Mathematical notations produced through Infty OCR. Previous ArticleNext Article VIEW FULL TEXT DOWNLOAD PDF FiguresRelatedReferencesDetailsCited by Valluru R, Link J and Claupein W (2011) Natural variation and morpho-physiological traits associated with water-soluble carbohydrate concentration in wheat under different nitrogen levels, Field Crops Research, 10.1016/j.fcr.2011.06.008, 124:1, (104-113), Online publication date: 1-Oct-2011. Farazdaghi H (2011) The single-process biochemical reaction of Rubisco: A unified theory and model with the effects of irradiance, CO2 and rate-limiting step on the kinetics of C3 and C4 photosynthesis from gas exchange, Biosystems, 10.1016/j.biosystems.2010.11.004, 103:2, (265-284), Online publication date: 1-Feb-2011. Lazár D, Kaňa R, Klinkovský T and Nauš J (2005) Experimental and theoretical study on high temperature induced changes in chlorophyll a fluorescence oscillations in barley leaves upon 2 % CO2, Photosynthetica, 10.1007/s11099-005-3027-x, 43:1, (13-27), Online publication date: 1-Mar-2005. Tsuyama M, Shibata M and Kobayashi Y (2003) Leaf factors affecting the relationship between chlorophyll fluorescence and the rate of photosynthetic electron transport as determined from CO2 uptake, Journal of Plant Physiology, 10.1078/0176-1617-01067, 160:10, (1131-1139), Online publication date: 1-Jan-2003. 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BAKER N and ORT D (1992) Light and crop photosynthetic performance Crop Photosynthesis, 10.1016/B978-0-444-89608-7.50020-4, (289-312), . Seaton G and Walker D (1997) Chlorophyll fluorescence as a measure of photosynthetic carbon assimilation, Proceedings of the Royal Society of London. Series B: Biological Sciences, 242:1303, (29-35), Online publication date: 22-Oct-1990. This Issue23 July 1990Volume 241Issue 1300 Article InformationDOI:https://doi.org/10.1098/rspb.1990.0066Published by:Royal SocietyPrint ISSN:0962-8452Online ISSN:1471-2954History: Manuscript received14/03/1990Manuscript accepted09/04/1990Published online01/01/1997Published in print23/07/1990 License:Scanned images copyright © 2017, Royal Society Citations and impact Large datasets are available through Proceedings B's partnership with Dryad
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