บทคัดย่องานวิจัย

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The involvement of marmesin in celery resistance to pathogens during storage and the effect of temperature on its concentration.

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

Phytopathology Year: 1995 Vol: 85 Issue: 6 Pages: 711-714 Ref: 37 ref.

1995

บทคัดย่อ

The involvement of marmesin in celery resistance to pathogens during storage and the effect of temperature on its concentration.

 

Evidence is presented that (+)marmesin, rather than linear furanocoumarins (psoralens), may play the major role in celery resistance to pathogens during storage. (+)Marmesin, the precursor of psoralens in celery, has at least 100 times greater antifungal activity in vitro in the dark than psoralens. Increased susceptibility of celery to pathogens during 1 month of storage was accompanied by a decrease in (+)marmesin concn and a corresponding increase in psoralen concn. An increase in celery decay was negatively correlated with (+)marmesin concn and positively correlated with psoralen concn. After 1 month of storage at 0 or 2 deg C, the concn of psoralens increased from 10 to 136 or 78 micro g/g FW, respectively, while the concn of (+)marmesin under the same storage conditions decreased from 33 to 4 or 11 micro g/g FW, respectively. Incidence of decay after 1 month of storage at 0 or 2 deg was 62 or 27%, respectively.