Evento
Application of ABA and GA3 modulate synthesis of polyphenols, terpenes and free amino acids in Vitis Vinifera L.
Murcia, Germán; Retamales, Martín; Pontin, Mariela Ana
; Fontana, Ariel Ramón
; Bottini, Rubén; Piccoli, Patricia Noemí
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Colaboradores:
Pereyra Irujo, Gustavo Adrian
; Paz, Cosme Daniel
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Tipo del evento:
Congreso
Nombre del evento:
XV Congreso Latinoamericano; XXX Reunión Argentina de Fisiología Vegetal
Fecha del evento:
21/09/2014
Institución Organizadora:
Asociación Sociedad Argentina de Fisiología Vegetal;
Título del Libro:
Libro de Resúmenes: Conferencias, Simposios y Trabajos Presentados. XIV ReuniónLatinoamericana de Fisiología Vegetal y XXX Reunión Argentina de Fisiología Vegetal
Editorial:
Universidad Nacional de Mar del Plata
ISBN:
978-987-544-592-5
Idioma:
Inglés
Clasificación temática:
Resumen
ABA and gibberellins are terpenic phytohormones that modulate several physiological responses. In many species the resistance to stress conditions is related with increases of secondary metabolites, including polyphenols and terpenes (particularly ABA), and the amino acid proline. This study investigated polyphenol, terpene and amino acid profiles in grape plants submitted to ABA and GA3 application. By GC–EIMS analysis of berry, leaf and roots 19 terpenes, including monoterpenes, sesquiterpenes, diterpenes and triterpenes were characterized. Also, 14 amino acids were identified, with L-Glutamic acid and L-Aspartic acid, both related with antioxidant defense, as the most abundant in leaf tissues. By HPLC-MWD the anthocyanin polyphenol profile was assessed. Applications of the two phytohormones decreased the free amino acid levels, presumably used as precursors of secondary metabolites; especially triterpenes involved in acclimation to stress that were augmented. However, L-Glutamic acid and L-Aspartic acid were specifically enhanced after hormonal treatment. ABA applications improved synthesis of polyphenols with antioxidant properties suggesting mechanisms of defense against oxidative damage. Also, L-Proline accumulated whereas L-Phenylalanine was decreased, in concordance with literature showing an osmotic adjustment in water deficit-stressed plants.
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Eventos(IBAM)
Eventos de INST.DE BIOLOGIA AGRICOLA DE MENDOZA
Eventos de INST.DE BIOLOGIA AGRICOLA DE MENDOZA
Citación
Application of ABA and GA3 modulate synthesis of polyphenols, terpenes and free amino acids in Vitis Vinifera L.; XV Congreso Latinoamericano; XXX Reunión Argentina de Fisiología Vegetal; Mar del Plata; Argentina; 2014; 63-63
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