Differential responses of five cherry tomato varieties to water stress: changes on phenolic metabolites and related enzymes.
Phytochemistry
; 72(8): 723-9, 2011 Jun.
Article
en En
| MEDLINE
| ID: mdl-21420135
ABSTRACT
Different tomato cultivars (Solanum lycopersicum L.) with differences in tolerance to drought were subjected to moderate water stress to test the effects on flavonoids and caffeoyl derivatives and related enzymes. Our results indicate that water stress resulted in decreased shikimate pathway (DAHP synthase, shikimate dehydrogenase, phenylalanine ammonium lyase, cinnamate 4-hydroxylase, 4-coumarate CoA ligase) and phenolic compounds (caffeoylquinic acid derivatives, quercetin and kaempferol) in the cultivars more sensitive to water stress. However, cv. Zarina is more tolerant, and registered a rise in querc-3-rut-pent, kaempferol-3-api-rut, and kaempferol-3-rut under the treatment of water stress. Moreover, this cultivar show increased activities of flavonoid and phenylpropanoid synthesis and decreased in degradation-related enzymes. These results show that moderate water stress can induce shikimate pathway in tolerant cultivar.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Flavonoides
/
Solanum lycopersicum
Idioma:
En
Revista:
Phytochemistry
Año:
2011
Tipo del documento:
Article
País de afiliación:
España