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Titolo:
Induction and accumulation of caffeine in young, actively growing leaves of cocoa (Theobroma cacao L.) by wounding or infection with Crinipellis perniciosa
Autore:
Aneja, M; Gianfagna, T;
Indirizzi:
Rutgers State Univ, Dept Plant Sci, New Brunswick, NJ 08901 USA Rutgers State Univ New Brunswick NJ USA 08901 New Brunswick, NJ 08901 USA
Titolo Testata:
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
fascicolo: 1, volume: 59, anno: 2001,
pagine: 13 - 16
SICI:
0885-5765(200107)59:1<13:IAAOCI>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
COFFEA-ARABICA; PURINE ALKALOIDS; BIOSYNTHESIS; METABOLISM; EXPRESSION;
Keywords:
cacao; salicylic acid; benzothiadiazole; witches' broom disease;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Aneja, M Rutgers State Univ, Dept Plant Sci, 59 Dudley Rd, New Brunswick, NJ 08901 USA Rutgers State Univ 59 Dudley Rd New Brunswick NJ USA 08901 01 USA
Citazione:
M. Aneja e T. Gianfagna, "Induction and accumulation of caffeine in young, actively growing leaves of cocoa (Theobroma cacao L.) by wounding or infection with Crinipellis perniciosa", PHYSL MOL P, 59(1), 2001, pp. 13-16

Abstract

Grinipellis perniciosa, the causal agent of witches' broom disease, attacks young actively growing shoots, flowers and developing fruits of cocoa (Theobroma cacao L.). Infected shouts become fasciated and a profusion of hypertrophic shoots with small leaves develop from the lateral buds. This is followed by desiccation and death of the infected stem and leaves. Infected stein tissue contains significant amounts of caffeine (109 +/- 35 mug g(-1)), approximately seven to eight times greater than healthy stems (14 +/- 1 mug g(-1)). Wounding young actively growing leaves induces the production ofconsiderable amounts of caffeine within 1 day of treatment, whereas the level of caffeine in older leaves is unaffected by wounding. Caffeine production is stimulated by treatment of young actively growing leaves with salicylic acid (SA) and its synthetic analog, benzothiadiazole, compounds that induce pathogen defense responses in plants. Growth of C. perniciosa is also significantly inhibited on caffeine-containing media. The results suggest that in cocoa, the caffeine pathway is inducible in young actively growing leaves by pathogen attack, wounding and SA, and may be part of the defense response of this species to herbivory and infection, (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 21:43:09