บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Phytoalexin elicitation in grape berries and their susceptibility to Rhizopus stolonifer.

Sarig, P.; Zutkhi, Y.; Monjauze, A.; Lisker, N.; Ben-Arie, R.;

Physiological and Molecular Plant Pathology Year: 1997 Vol: 50 Issue: 5 Pages: 337-347 Ref: 29 ref.

1997

บทคัดย่อ

Phytoalexin elicitation in grape berries and their susceptibility to Rhizopus stolonifer.

Grape berries produced similar amounts of the phytoalexins resveratrol and pterostilbene after inoculation with R. stolonifer and after exposure to UV radiation (254 nm for 10 minutes). The time taken for phytoalexin accumulation depended on induction treatment. The relative amount of each phytoalexin produced was cultivar dependent. The phytoalexins were fungitoxic in vitro, inhibiting spore germination and hyphal growth of R. stolonifer and Botrytis cinerea. A negative correlation occurred between the potential for resveratrol accumulation in different cultivars and their susceptibility to R. stolonifer. Phytoalexin concentrations declined with increasing age of the berries, coinciding with increased susceptibility.