Jasmonic Acid Is Required for Plant Acclimation to a Combination of High Light and Heat Stress
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Otros documentos de la autoría: Balfagón Sanmartín, Damián; Sengupta, Soham; Gomez-Cadenas, Aurelio; Fritschi, Felix; Azad, Rajeev K.; Mittler, Ron; I Zandalinas, Sara
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INVESTIGACIONMetadatos
Título
Jasmonic Acid Is Required for Plant Acclimation to a Combination of High Light and Heat StressAutoría
Fecha de publicación
2019Editor
American Society of Plant BiologistsISSN
0032-0889; 1532-2548Cita bibliográfica
BALFAGÓN, Damián, et al. Jasmonic acid is required for plant acclimation to a combination of high light and heat stress. Plant physiology, 2019, vol. 181, no 4, p. 1668-1682.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.plantphysiol.org/content/181/4/1668Versión
info:eu-repo/semantics/publishedVersionResumen
In the field, plants experience high light (HL) intensities that are often accompanied by elevated temperatures. Such conditions
are a serious threat to agriculture production, because photosynthesis is highly sensitive ... [+]
In the field, plants experience high light (HL) intensities that are often accompanied by elevated temperatures. Such conditions
are a serious threat to agriculture production, because photosynthesis is highly sensitive to both HL intensities and hightemperature stress. One of the potential cellular targets of HL and heat stress (HS) combination is PSII because its degree of
photoinhibition depends on the balance between the rate of PSII damage (induced by light stress), and the rate of PSII repair
(impaired under HS). Here, we studied the responses of Arabidopsis (Arabidopsis thaliana) plants to a combination of HL and HS
(HL1HS) conditions. Combined HL1HS was accompanied by irreversible damage to PSII, decreased D1 (PsbA) protein levels,
and an enhanced transcriptional response indicative of PSII repair activation. We further identified several unique aspects of this
stress combination that included enhanced accumulation of jasmonic acid (JA) and JA-Ile, elevated expression of over 2,200
different transcripts that are unique to the stress combination (including many that are JA-associated), and distinctive structural
changes to chloroplasts. A mutant deficient in JA biosynthesis (allene oxide synthase) displayed enhanced sensitivity to
combined HL1HS and further analysis revealed that JA is required for regulating several transcriptional responses unique to
the stress combination. Our study reveals that JA plays an important role in the acclimation of plants to a combination of
HL1HS. [-]
Publicado en
Plant physiology, 2019, vol. 181, no 4, p. 1668-1682.Proyecto de investigación
IOS-1353886, MCB-1936590, and IOS1932639, AGL2016-76574-RDerechos de acceso
Copyright © 2019 American Society of Plant Biologists. All rights reserved.
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