Detection of photosynthetic activity under cadmium stress by measurement of the red and far-red chlorophyll fluorescence

Simple item page
dc.contributor.authorCherif J.
dc.contributor.authorDerbel N.
dc.contributor.authorNakkach M.
dc.contributor.authorMediouni C.
dc.contributor.authorvon Bergmann H.
dc.contributor.authorJemal F.
dc.contributor.authorLakhdar Z.B.
dc.date.accessioned2011-10-13T16:58:35Z
dc.date.available2011-10-13T16:58:35Z
dc.date.issued2011
dc.description.abstractIn this work it is shown that, with a new spectroscopic method based on ultraviolet light emitting diode-induced fluorescence spectroscopy (UV-LED IFS), the photosynthetic activity of an intact attached leaf can be measured in a non-destructive way within a few seconds. The effects of cadmium (Cd) toxicity on the photosynthetic activity of tomato plants (Solanum lycopersicum) were studied using various CdCl2 (cadmium chloride) concentrations. The Cd treatment decreases the photosynthetic activity, measured via a decline of the variable chlorophyll (chl) fluorescence decrease ratio (RFd) values, calculated at 690 and 730nm. The chl fluorescence ratios of intensity (FIR) and band area were also calculated. It was found that the RFd(690) and RFd(730) values decreased whereas the FIR increased from 1 mMCd treatment and this behaviour is enhanced with the increasing of Cd concentrations. At 10 and 25 μMCd, the decrease in RFd values was associated with a strong decline in the chlorophyll-a {thorn} chlorophyll-b (chl-a {thorn} b). The chl-a {thorn} b decline could also be followed via an increase of the chl fluorescence ratio F690/F730. Our study demonstrates that the UV-LED IFS is a promising technique for early detection of Cd stress (from 1 μM) in tomato plants, before visual symptoms appear. © 2011 Taylor & Francis.
dc.description.versionArticle
dc.identifier.citationInternational Journal of Remote Sensing
dc.identifier.citation32
dc.identifier.citation15
dc.identifier.citationhttp://www.scopus.com/inward/record.url?eid=2-s2.0-80051737082&partnerID=40&md5=5b3666065da3f5fb1049618446127c60
dc.identifier.issn1431161
dc.identifier.other10.1080/01431161.2010.486014
dc.identifier.urihttp://hdl.handle.net/10019.1/16781
dc.subjectCadmium stress
dc.subjectCd concentrations
dc.subjectChlorophyll a
dc.subjectChlorophyll fluorescence
dc.subjectEarly detection
dc.subjectFluorescence ratio
dc.subjectNon destructive
dc.subjectPhotosynthetic activity
dc.subjectSolanum lycopersicum
dc.subjectSpectroscopic method
dc.subjectTomato plants
dc.subjectUltraviolet light-emitting
dc.subjectVisual symptoms
dc.subjectCadmium
dc.subjectCadmium chloride
dc.subjectChlorine compounds
dc.subjectChlorophyll
dc.subjectFluorescence spectroscopy
dc.subjectFruits
dc.subjectLight emitting diodes
dc.subjectPlants (botany)
dc.subjectSpectroscopic analysis
dc.subjectUltraviolet radiation
dc.subjectFluorescence
dc.subjectcadmium
dc.subjectchloride
dc.subjectchlorophyll a
dc.subjectfluorescence
dc.subjectleaf
dc.subjectphotosynthesis
dc.subjecttoxicity
dc.subjectLycopersicon esculentum
dc.titleDetection of photosynthetic activity under cadmium stress by measurement of the red and far-red chlorophyll fluorescence
dc.typeArticle
Files
Collections
Stellenbosch University - Scopus Publications