Photosynthetic induction in Eucalyptus urograndis seedlings and cuttings measured by an open photoacoustic cell

dc.creatorBarja, PR
dc.creatorMansanares, AM
dc.creatorDa Silva, EC
dc.creatorMagalhaes, ACN
dc.creatorAlves, PLCA
dc.date2001
dc.date2014-11-18T01:55:14Z
dc.date2015-11-26T16:49:35Z
dc.date2014-11-18T01:55:14Z
dc.date2015-11-26T16:49:35Z
dc.date.accessioned2018-03-28T23:36:19Z
dc.date.available2018-03-28T23:36:19Z
dc.identifierPhotosynthetica. Acad Sci Czech Republic, Inst Experimental Botany, v. 39, n. 4, n. 489, n. 495, 2001.
dc.identifier0300-3604
dc.identifierWOS:000175142100002
dc.identifier10.1023/A:1015687525198
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59692
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/59692
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59692
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1275496
dc.descriptionPhotosynthetic induction in leaves of four-month-old Eucalyptus urograndis seedlings and of cuttings obtained from adult trees that were previously dark-adapted was studied by the in vivo and in situ Open Photoacoustic Cell Technique, Results for the gas exchange component of the photoacoustic (PA) signal were interpreted considering that the gas uptake component would have a phase angle nearly opposite to that of the oxygen evolution component. By subtracting the thermal component from the total PA signal, we studied the competition between gas uptake and oxygen evolution during the photosynthetic induction. Seedlings presented a net oxygen evolution prior to cuttings, but cuttings reached a higher steady-state photosynthetic activity. The chlorophyll (Chl) a/b ratio and the Chl fluorescence induction characteristic F-v/F-m were significantly higher for cuttings, while there was no difference between samples in stomata density and leaf thickness. Thus the differences in PA signals of seedlings and cuttings are associated to differences between the photosystem 2 antenna systems of these samples.
dc.description39
dc.description4
dc.description489
dc.description495
dc.languageen
dc.publisherAcad Sci Czech Republic, Inst Experimental Botany
dc.publisherPrague 6
dc.publisherRepública Checa
dc.relationPhotosynthetica
dc.relationPhotosynthetica
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectchlorophyll fluorescence
dc.subjectclone differences
dc.subjectgas uptake
dc.subjectleaf thickness
dc.subjectoxygen evolution
dc.subjectphotobaric signal
dc.subjectphotothermal signal
dc.subjectstomata density
dc.subjectOxygen Evolution
dc.subjectTobacco-leaves
dc.subjectIntact Leaves
dc.subjectUptake Signal
dc.subjectPhase
dc.subjectSpectroscopy
dc.subjectExchange
dc.titlePhotosynthetic induction in Eucalyptus urograndis seedlings and cuttings measured by an open photoacoustic cell
dc.typeArtículos de revistas


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