Developmentally controlled changes during Arabidopsis leaf development indicate causes for loss of stress tolerance with age

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dc.citation.issue20
dc.citation.volume71
dc.contributor.authorKanojia A
dc.contributor.authorGupta S
dc.contributor.authorBenina M
dc.contributor.authorFernie AR
dc.contributor.authorMueller-Roeber B
dc.contributor.authorGechev T
dc.contributor.authorDijkwel PP
dc.contributor.editorFoyer C
dc.date.accessioned2023-12-15T01:14:28Z
dc.date.accessioned2024-07-25T06:50:21Z
dc.date.available2020-08-28
dc.date.available2023-12-15T01:14:28Z
dc.date.available2024-07-25T06:50:21Z
dc.date.issued2020-10-22
dc.description.abstractLeaf senescence is the final stage of leaf development and is induced by the gradual occurrence of age-related changes (ARCs). The process of leaf senescence has been well described, but the cellular events leading to this process are still poorly understood. By analysis of progressively ageing, but not yet senescing, Arabidopsis thaliana rosette leaves, we aimed to better understand processes occurring prior to the onset of senescence. Using gene expression analysis, we found that as leaves mature, genes responding to oxidative stress and genes involved in stress hormone biosynthesis and signalling were up-regulated. A decrease in primary metabolites that provide protection against oxidative stress was a possible explanation for the increased stress signature. The gene expression and metabolomics changes occurred concomitantly to a decrease in drought, salinity, and dark stress tolerance of individual leaves. Importantly, stress-related genes showed elevated expression in the early ageing mutant old5 and decreased expression in the delayed ageing mutant ore9. We propose that the decreased stress tolerance with age results from the occurrence of senescence-inducing ARCs that is integrated into the leaf developmental programme, and that this ensures a timely and certain death.
dc.description.confidentialfalse
dc.format.pagination6340-6354
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000605983900014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationKanojia A, Gupta S, Benina M, Fernie AR, Mueller-Roeber B, Gechev T, Dijkwel PP. (2020). Developmentally controlled changes during Arabidopsis leaf development indicate causes for loss of stress tolerance with age. Journal of Experimental Botany. 71. 20. (pp. 6340-6354).
dc.identifier.doi10.1093/JXB/ERAA347
dc.identifier.eissn1460-2431
dc.identifier.elements-typejournal-article
dc.identifier.issn0022-0957
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/70984
dc.languageEnglish
dc.publisherOxford University Press on behalf of the Society for Experimental Biology
dc.publisher.urihttps://academic.oup.com/jxb/article/71/20/6340/5877291
dc.relation.isPartOfJournal of Experimental Botany
dc.rights(c) The author/sen
dc.rights.licenseCC BY 4.0en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectAbiotic stress
dc.subjectageing
dc.subjectage-related changes
dc.subjectArabidopsis
dc.subjectdevelopment
dc.subjectoxidative stress
dc.subjectsenescence
dc.subjectstress-responsive metabolites
dc.titleDevelopmentally controlled changes during Arabidopsis leaf development indicate causes for loss of stress tolerance with age
dc.typeJournal article
pubs.elements-id438522
pubs.organisational-groupOther
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