บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

A possible involvement of gibberellic acid in celery resistance to pathogens during storage.

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

Acta Horticulturae Year: 1994 Issue: No. 381 Pages: 583-588 Ref: 24 ref.

1994

บทคัดย่อ

A possible involvement of gibberellic acid in celery resistance to pathogens during storage.

ABSTRACT

Psoralens (furanocoumarins) are considered to be phytoalexins associated with the resistance of celery to pathogens. Results have indicated that psoralens have a weak antifungal activity in vitro. An alternative mechanism for celery resistance to pathogens during storage is suggested. This proposes that marmesin, the precursor of psoralens in celery and other plants, which has at least 100 times greater antifungal activity in vitro than psoralens, is associated with celery resistance to pathogens. Increased susceptibility of celery to pathogens during storage was accompanied by an increase in psoralen concn and a corresponding decrease in marmesin concn. Postharvest treatment of celery with gibberellin (GA3) prior to storage resulted in decay inhibition and a corresponding delay in the increase of psoralen concn and the decrease of marmesin concn.