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Columbianetin, a phytoalexin associated with celery resistance to pathogens during storage.

Afek, U.; Carmeli, S.; Aharoni, N.;

Phytochemistry Year: 1995 Vol: 39 Issue: 6 Pages: 1347-1350 Ref: 17 ref.

1995

บทคัดย่อ

Columbianetin, a phytoalexin associated with celery resistance to pathogens during storage.

 

Columbianetin, rather than psoralens, is a new phytoalexin associated with celery resistance to pathogens during storage. In vitro, columbianetin had at least 80 times greater antifungal activity than furanocoumarins (psoralens and angelicin) against Botrytis cinerea, Alternaria alternata and Sclerotinia sclerotiorum. In vivo, the concn of furanocoumarins in celery was 8 micro g/g FW and this is <0.25% of the concn required for growth inhibition of celery pathogens. However, the concn of columbianetin in vitro was 38 micro g/g FW and this is close to the concn required for growth inhibition of celery pathogens in vitro.