บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Antagonistic action of siderophores from Rhodotorula glutinis upon the postharvest pathogen Penicillium expansum.

Calvente, V.; Benuzzi, D.; Tosetti, M. I. S. de;

International Biodeterioration & Biodegradation Year: 1999 Vol: 43 Issue: 4 Pages: 167-172 Ref: 14 ref.

1999

บทคัดย่อ

Antagonistic action of siderophores from Rhodotorula glutinis upon the postharvest pathogen Penicillium expansum.

Rhodotorulic acid produced by R. glutinis strains improved the biological control of blue rot caused by P. expansum in harvested apples from Argentina. The production of the siderophore was closely associated with the iron concentration in the medium. Thus, very low additions of the metal reduced the siderophore production considerably. The antagonistic effect of R. glutinis and rhodotorulic acid was studied by using in vitro and in vivo assays. In the in vitro assays, rhodotorulic acid reduced the growth of P. expansum, whereas the chelate (rhodotorulic acid plus iron) did not. Siderophore antagonism was then related to competition for iron. In biocontrol assays on apple wounds, the blue mould was more effectively controlled by the antagonistic agent plus siderophore than by the antagonistic agent alone. The disease incidence (DI percentage of treated wounds that developed rot) was 34% when apples were protected by R. glutinis alone, whereas it was 6% when the fruits were protected by R. glutin

is plus rhodotorulic acid.