Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/23573
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dc.contributor.authorSerôdio, Joãopt
dc.contributor.authorEzequiel, Joãopt
dc.contributor.authorFrommlet, Jörgpt
dc.contributor.authorLaviale, Martinpt
dc.contributor.authorLavaud, Johannpt
dc.date.accessioned2018-06-19T15:10:46Z-
dc.date.issued2013-
dc.identifier.issn0032-0889pt
dc.identifier.urihttp://hdl.handle.net/10773/23573-
dc.description.abstractLight-response curves (LCs) of chlorophyll fluorescence are widely used in plant physiology. Most commonly, LCs are generated sequentially, exposing the same sample to a sequence of distinct actinic light intensities. These measurements are not independent, as the response to each new light level is affected by the light exposure history experienced during previous steps of the LC, an issue particularly relevant in the case of the popular rapid light curves. In this work, we demonstrate the proof of concept of a new method for the rapid generation of LCs from nonsequential, temporally independent fluorescence measurements. The method is based on the combined use of sample illumination with digitally controlled, spatially separated beams of actinic light and a fluorescence imaging system. It allows the generation of a whole LC, including a large number of actinic light steps and adequate replication, within the time required for a single measurement (and therefore named "single-pulse light curve"). This method is illustrated for the generation of LCs of photosystem II quantum yield, relative electron transport rate, and nonphotochemical quenching on intact plant leaves exhibiting distinct light responses. This approach makes it also possible to easily characterize the integrated dynamic light response of a sample by combining the measurement of LCs (actinic light intensity is varied while measuring time is fixed) with induction/relaxation kinetics (actinic light intensity is fixed and the response is followed over time), describing both how the response to light varies with time and how the response kinetics varies with light intensity.pt
dc.language.isoengpt
dc.publisherAmerican Society of Plant Biologistspt
dc.rightsrestrictedAccesspor
dc.titleA method for the rapid generation of nonsequential light-response curves of chlorophyll fluorescencept
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage1089pt
degois.publication.issue3
degois.publication.lastPage1102pt
degois.publication.titlePlant Physiologypt
degois.publication.volume163pt
dc.date.embargo10000-01-01-
dc.identifier.doi10.1104/pp.113.225243pt
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