Fatty Acid Profile Changes During Gradual Soil Water Depletion in Oats Suggests a Role for Jasmonates in Coping With Drought
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Otros documentos de la autoría: Sánchez Martín, Javier; Canales, Francisco J.; Tweed, John K. S.; Lee, Michael R. F.; Rubiales, Diego; Gomez-Cadenas, Aurelio; Arbona, Vicent; Mur, Luis; Prats, Elena
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Título
Fatty Acid Profile Changes During Gradual Soil Water Depletion in Oats Suggests a Role for Jasmonates in Coping With DroughtAutoría
Fecha de publicación
2018-07-31Editor
Frontiers MediaCita bibliográfica
SÁNCHEZ MARTÍN, Javier; CANALES, Francisco J. ; TWEED, John K. S.; LEE, Michael R. F.; RUBIALES, Diego; GÓMEZ CADENAS, Aurelio; ARBONA, Vicent; MUR, Luis; PRATS, Elena (2018). Fatty Acid Profile Changes During Gradual Soil Water Depletion in Oats Suggests a Role for Jasmonates in Coping With Drought. Frontiers in Plant Science, v. 9Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.frontiersin.org/articles/10.3389/fpls.2018.01077/fullVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Although often investigated within the context of plant growth and development and/or
seed composition, plant lipids have roles in responses to environment. To dissect
changes in lipid and fatty acid ... [+]
Although often investigated within the context of plant growth and development and/or
seed composition, plant lipids have roles in responses to environment. To dissect
changes in lipid and fatty acid composition linked to drought tolerance responses
in oats, we performed a detailed profiling of (
>
90) different lipids classes during a
time course of water stress. We used two oat cultivars, Flega and Patones previously
characterized as susceptible and tolerant to drought, respectively. Significant differences
in lipid classes (mono, di and triacylglycerols; [respectively MAG, DAG, and TAG] and
free fatty acids [FFA]) and in their fatty acid (FA) composition was observed between
cultivars upon drought stress. In Flega there was an increase of saturated FAs, in
particular 16:0 in the DAG and TAG fractions. This led to significant lower values of
the double bond index and polyunsaturated/saturated ratio in Flega compared with
Patones. By contrast, Patones was characterized by the early induction of signaling-
related lipids and fatty acids, such as DAGs and linolenic acid. Since the latter is a
precursor of jasmonates, we investigated further changes of this signaling molecule.
Targeted measurements of jasmonic acid (JA) and Ile-JA indicated early increases in
the concentrations of these molecules in Patones upon drought stress whereas no
changes were observed in Flega. Altogether, these data suggest a role for jasmonates
and specific fatty acids in different lipid classes in coping with drought stress in oat. [-]
Publicado en
Frontiers in Plant Science (2018), v. 9Proyecto de investigación
1) Spanish Ministry of Economy and Competitiveness (AGL2016-78965AGR); 2) Regional government through the AGR-253 group, the European Regional and Social Development Funds.Derechos de acceso
info:eu-repo/semantics/openAccess
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