Long-distance ABA transport can mediate distal tissue responses by affecting local ABA concentrations
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2508
comunitat-uji-handle3:10234/6999
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INVESTIGACIONMetadatos
Título
Long-distance ABA transport can mediate distal tissue responses by affecting local ABA concentrationsFecha de publicación
2018-01Editor
WileyCita bibliográfica
Li W, de Ollas C, Dodd IC (2017) Long-distance ABA transport can mediate distal tissue responses by affecting local ABA concentrations. J Integr Plant Biol 60: 16–33Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://onlinelibrary.wiley.com/doi/10.1111/jipb.12605/fullVersión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Environmental stresses that perturb plant water relations influence abscisic acid (ABA) concentrations, but it is unclear whether long-distance ABA transport contributes to changes in local ABA levels. To determine ... [+]
Environmental stresses that perturb plant water relations influence abscisic acid (ABA) concentrations, but it is unclear whether long-distance ABA transport contributes to changes in local ABA levels. To determine the physiological relevance of ABA transport, we made reciprocal- and self-grafts of ABA-deficient flacca mutant and wild-type (WT) tomato plants, in which low phosphorus (P) conditions decreased ABA concentrations while salinity increased ABA concentrations. Whereas foliar ABA concentrations in the WT scions were rootstock independent under conditions, salinity resulted in long-distance transport of ABA: flacca scions had approximately twice as much ABA when grafted on WT rootstocks compared to flacca rootstocks. Root ABA concentrations were scion dependent: both WT and flacca rootstocks had less ABA with the flacca mutant scion than with the WT scion under conditions. In WT scions, whereas rootstock genotype had limited effects on stomatal conductance under conditions, a flacca rootstock decreased leaf area of stressed plants, presumably due to attenuated root-to-shoot ABA transport. In flacca scions, a WT rootstock decreased stomatal conductance but increased leaf area of stressed plants, likely due to enhanced root-to-shoot ABA transport. Thus, long-distance ABA transport can affect responses in distal tissues by changing local ABA concentrations. [-]
Proyecto de investigación
National Natural Science Foundation of China (31300327) ; Excellent Young Scientist Foundation of Henan University (yqpy20140030) ; EU ROOTOPOWER (289365)Derechos de acceso
© 2017 Institute of Botany, Chinese Academy of Sciences
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