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| Titel: |
Activity of the Yeasts Cryptococcus laurentii and Rhodotorula glutinis Against Post-harvest Rots on Different Fruits |
| Auteur: |
De Cicco, Giuseppe Lima Filippo De Curtis Raffaello Castoria Vincenzo |
| Verschenen in: |
Biocontrol science and technology |
| Paginering: | Jaargang 8 (1998) nr. 2 pagina's 257-267 |
| Jaar: |
1998-06-01 |
| Inhoud: |
More than 200 yeasts were selectively isolated from microbial populations on the surface of different fruits. Fifty of these isolates were tested against blue mould ( Penicillium expansum ) on wounded apples. Isolates LS-11 of Rhodotorula glutinis and LS-28 of Cryptococcus laurentii were the most effective antagonists. They were further evaluated at 20IC on different fruits (apples, pears, strawberries, kiwi fruits and table grapes) against several of the main post-harvest pathogens ( Botrytis cinerea, Penicillium expansum, Rhizopus stolonifer and Aspergillus niger ) and at 4IC on apples inoculated with P. expansum . At 20IC the antagonists significantly reduced rot incidence and showed a wide range of activity on different hostpathogen combinations; isolate LS-28 exhibited a higher and more stable activity than LS-11. Both yeasts were also effective against P. expansum in cold storage conditions. Populations of the two yeasts were assessed on wounded and unwounded surfaces of apples kept at both 20 and 4IC. At either temperature, isolate LS-28 reached greater densities in wounded tissues than LS-11, but had a lower ability to colonize unwounded apple skin. The two yeasts were able to grow in culture at temperatures ranging from 0 to 35IC. In assays performed in vitro at 24IC, the antagonists showed low sensitivity towards several fungicides commonly applied on fruits and vegetables. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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