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Titre du document / Document title

(+)-Catechin acts as an infection-inhibiting factor in strawberry leaf

Auteur(s) / Author(s)

YAMAMOTO M. (1) ; NAKATSUKA S. (1) ; OTANI H. (2) ; KOHMOTO K. (2) ; NISHIMURA S. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) School of Agriculture, Nagoya University, Nagoya 464-8601, JAPON
(2) Faculty of Agriculture, Tottori University, Tottori 680-8553, JAPON

Résumé / Abstract

An infection-inhibiting factor (IIF) was isolated from strawberry leaves and identified as (+)-catechin, This compound inhibited the formation of infection hyphae from appressoria of Alternaria alternata, but allowed both spore germination and appressorial formation. It is a normal component of strawberry leaves, but further accumulates as the major IIF in response to inoculation with nonpathogenic spores of A. alternata. The accumulation of (+)-catechin on a susceptible host was not induced, however, by inoculation with pathogenic spores of the strawberry pathotype or by inoculation with nonpathogenic spores supplemented with host-specific toxin (AF-toxin I). These results imply that (+)-catechin acts as a protective agent during induced resistance and that AF-toxin I acts as a fungal suppressor of induced resistance.

Revue / Journal Title

Phytopathology    ISSN  0031-949X   CODEN PHYTAJ 

Source / Source

2000, vol. 90, no6, pp. 595-600 (35 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Phytopathological Society, St. Paul, MN, ETATS-UNIS  (1911) (Revue)

Mots-clés anglais / English Keywords

Alternaria alternata

;

Fragaria ananassa

;

Fungus resistance

;

Induced resistance

;

Antifungal agent

;

Toxin

;

Phytotoxin

;

Host specificity

;

Pathotype

;

Catechin

;

Fungi Imperfecti

;

Fungi

;

Thallophyta

;

Rosaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Plant pathogen

;

Host agent relation

;

Small fruits

;

Mots-clés français / French Keywords

Alternaria alternata

;

Fragaria ananassa

;

Résistance champignon

;

Résistance induite

;

Antifongique

;

Toxine

;

Phytotoxine

;

Spécificité hôte

;

Pathotype

;

Catéchine

;

Fungi Imperfecti

;

Fungi

;

Thallophyta

;

Rosaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Phytopathogène

;

Relation hôte agent

;

Petit fruit

;

Mots-clés espagnols / Spanish Keywords

Alternaria alternata

;

Fragaria ananassa

;

Resistencia a los hongos

;

Resistencia inducida

;

Antifúngico

;

Toxina

;

Fitotoxina

;

Especificidad huesped

;

Patotipo

;

Fungi Imperfecti

;

Fungi

;

Thallophyta

;

Rosaceae

;

Dicotyledones

;

Angiospermae

;

Spermatophyta

;

Fitopatógeno

;

Relación huesped agente

;

Pequeño fruto

;

Localisation / Location

INIST-CNRS, Cote INIST : 674, 35400008736697.0040

Nº notice refdoc (ud4) : 1424928



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