Involvement of reactive oxygen species in the induction of (S)-N-p-coumaroyloctopamine accumulation by beta-1,3-glucooligosaccharide elicitors in potato tuber tissues.
Z Naturforsch C J Biosci
; 56(3-4): 228-34, 2001.
Article
em En
| MEDLINE
| ID: mdl-11371013
Treatment of potato tuber tissues with beta-1,3-glucooligosaccharide induces accumulation of (S)-N-p-coumaroyloctopamine (p-CO). We examined the role of reactive oxygen species (ROS) and nitric oxide (NO) in the signal transduction leading to p-CO accumulation. Induction was suppressed by an NADPH-oxidase inhibitor, diphenyleneiodonium chloride, and oxygen radical scavengers. H2O2 was generated in the tuber tissue within a few minutes of treatment with beta-1,3-glucooligosaccharide. On the other hand, treatment with NO specific scavenger, nitric oxide synthase inhibitor, and serine protease inhibitor did not inhibit p-CO induction. Our findings suggest that ROS generated by the action of NADPH-oxidase play an important role in this system, while NO and serine protease are unlikely to be involved in this process.
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Base de dados:
MEDLINE
Assunto principal:
Oligossacarídeos
/
Solanum tuberosum
/
Octopamina
/
Espécies Reativas de Oxigênio
/
Ácidos Cumáricos
Idioma:
En
Revista:
Z Naturforsch C J Biosci
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Japão