[Penicillium-inhibiting yeasts].
The objective of this work was to establish the in vitro and in vivo inhibition of post-harvest pathogenic moulds by yeasts in order to make a biocontrol product. Post-harvest pathogenic moulds Penicillium digitatum, P. italicum, P. ulaiense, Phyllosticta sp., Galactomyces geotrichum and yeasts belonging to genera Brettanomyces, Candida, Cryptococcus, Kloeckera, Pichia, Rhodotorula were isolated from citrus fruits. Some yeasts strains were also isolated from other sources. The yeasts were identified by their macro and micro-morphology and physiological tests. The in vitro and in vivo activities against P. digitatum or P. ulaiense were different. Candida cantarellii and one strain of Pichia subpelliculosa produced a significant reduction of the lesion area caused by the pathogenic moulds P. digitatum and P. ulaiense, and could be used in a biocontrol product formulation.
Benítez Ahrendts
M R
MR
Facultad de Ciencias Agrarias, Universidad Nacional de Jujuy, Alberdi 47, 4600 SS Jujuy.
Carrillo
L
L
D002957:Citrus / Q000382:microbiology*; D005638:Fruit / Q000382:microbiology; D016533:Mycological Typing Techniques; D010407:Penicillium / Q000254:growth & development / Q000502:physiology*; D010572:Pest Control, Biological; D010935:Plant Diseases / Q000382:microbiology*; D015003:Yeasts / Q000145:classification / Q000302:isolation & purification / Q000502:physiology* / Q000648:ultrastructure