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, n
o6, pp. 595-600 (35 ref.)
Langue / Language
Anglais
Editeur / Publisher
American Phytopathological Society, St. Paul, MN, ETATS-UNIS
(1911)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 674, 35400008736697.0040
Nº notice refdoc (ud4) : 1424928
