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Leaf age effects on photosynthetic activity and sugar accumulation in droughted and rewatered Lupinus albus L. plants

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dc.contributor.authorDavid, Maria Manuela
dc.contributor.authorCoelho, Dulce
dc.contributor.authorBarrote, Isabel
dc.contributor.authorCorreia, Maria João
dc.date.accessioned2014-01-10T10:44:32Z
dc.date.available2014-01-10T10:44:32Z
dc.date.issued1998
dc.description.abstractChanges in the photosynthetic rate (A), stomatal conductance (g), water relations, photosynthetic pigments, Rubisco and soluble sugars accumulation were studied in different aged leaves of white lupin during soil drying and following rehydration. In water-stressed plants, A and g sharply declined and recovered only partially after rewatering. The way Ci and A/gchanged with drought was strongly dependent on leaf age; only in the young leaves did A/g increase and Ci decrease. Drought induced accumulation of soluble sugars was also age dependent, decreasing as leaves aged. In response to soil drying, the contents of photosynthetic pigments, total soluble protein and Rubisco protein increased in the young leaves and were either not affected or slightly decreased in the older ones. Rehydration accentuated the losses in pigments and Rubisco in the old leaves of water-stressed plants. These results suggest that the contribution of mesophyll limitations to explain drought inhibition of photosynthesis increases with leaf age, decreasing the ability to recover after rewatering. In young leaves the tolerance of the photosynthetic apparatus to dehydration and rehydration episodes is high and it is associated with high contents of Rubisco and in soluble sugars, particularly hexoses.por
dc.description.sponsorshipPBIC/AGR/2292/95
dc.identifier.citationDavid M.M., Coelho D., Barrote I., Correia M.J. (1998). Leaf age effects on photosynthetic activity and sugar accumulation in droughted and rewatered Lupinus albus L. plants. Aust. J. Plant Physiol. 25: 299-306por
dc.identifier.doihttp://dx.doi.org/10.1071/PP97142
dc.identifier.issn1445-4408
dc.identifier.otherAUT: MDA00369; IBA00639; JCO00381;
dc.identifier.urihttp://hdl.handle.net/10400.1/3327
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherCSIROpor
dc.relation.publisherversionhttp://www.publish.csiro.au/?paper=PP97142por
dc.subjectPhotosynthetic activitypor
dc.subjectSugar accumulationpor
dc.subjectDroughtpor
dc.subjectWater deficitpor
dc.subjectRewateringpor
dc.subjectLupinus albuspor
dc.subjectLeaf agepor
dc.subjectLeaf senescencepor
dc.subjectPhotosynthesispor
dc.subjectWater relationspor
dc.subjectPhotosynthetic pigmentspor
dc.subjectStarchpor
dc.titleLeaf age effects on photosynthetic activity and sugar accumulation in droughted and rewatered Lupinus albus L. plantspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage306por
oaire.citation.startPage299por
oaire.citation.titleAustralian Journal of Plant Physiologypor
oaire.citation.volume25por
person.familyNameDavid
person.familyNameBarrote
person.givenNameMaria Manuela
person.givenNameIsabel
person.identifier.ciencia-idE31B-16E0-7562
person.identifier.ciencia-id801C-0AE4-B5CA
person.identifier.orcid0000-0001-6251-7222
person.identifier.orcid0000-0002-0922-0259
person.identifier.ridN-8024-2013
person.identifier.scopus-author-id7402103697
person.identifier.scopus-author-id8659654200
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationb4ac527b-f4a2-4983-b98c-f5614f59dd49
relation.isAuthorOfPublication8027b4d2-ee8d-4432-be75-7a2342a905a8
relation.isAuthorOfPublication.latestForDiscoveryb4ac527b-f4a2-4983-b98c-f5614f59dd49

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