Effects on grape amino acid concentration through foliar application of three different elicitors.
Food Res Int
; 99(Pt 1): 688-692, 2017 09.
Article
en En
| MEDLINE
| ID: mdl-28784532
ABSTRACT
Elicitors play an important role in the defense against pathogens as an alternative to chemical pesticides by increasing secondary metabolites. Their effect on grape amino acid has been little investigated. Thus, the aim of this research was to study the influence of methyl jasmonate (MeJ), chitosan (CHT), and a yeast extract (YE) on grape amino acid composition, through foliar applications to grapevines. The must amino acid concentration was analyzed by HPLC. The results showed that CHT and YE treatments decreased the must concentration of several amino acids, affecting total amino acid content (from 2364 to 1961, and 1818mg/L, respectively). However, MeJ treatment had a slight effect on grape amino acid content, increasing the concentration of Met (from 8.95 to 12.13mg/L) and Phe (from 7.96 to 9.29mg/L). It seems to be that, the resistance induction through CHT and YE treatments results in physiological costs to grapevines associated with a decrease on grape amino acid concentration. Consequently, MeJ applications, as a viticultural practice, could be a better tool than CHT and YE treatments, because did not affect grape amino acid concentration.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Levaduras
/
Ciclopentanos
/
Vitis
/
Quitosano
/
Oxilipinas
/
Aminoácidos
/
Acetatos
Idioma:
En
Revista:
Food Res Int
Año:
2017
Tipo del documento:
Article
País de afiliación:
España