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Scientia Horticulturae

Charles L. Wilson 
Edo Chalutz 

Two yeasts, Debaryomyces hansenii (Zopf) Van Rij and Aureobasidium pullulans (De Bary) Arnaud, and two bacteria, Pseudomonas cepacia (Van Hall) Bergy et al. and P. syringae Burkholder, were the most effective antagonists from over 100 isolates tested against Penicillium digitatum Sacc. and Penicillium italicum Wehmer rots on citrus fruit. Overall, P. cepacia provided the best protection against both of these rots. P. cepacia produced antibiotic zones against the two Penicillia rot organisms in culture, whereas P. syringae, D. hansenii and A. pullulans did not. All four antagonists show promise as biocontrol agents.

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Postharvest biological control of Penicillium rots of citrus with antagonistic yeasts and bacteria
40(2)

Charles L. Wilson 
Edo Chalutz 

Postharvest biological control of Penicillium rots of citrus with antagonistic yeasts and bacteria .

Two yeasts, Debaryomyces hansenii (Zopf) Van Rij and Aureobasidium pullulans (De Bary) Arnaud, and two bacteria, Pseudomonas cepacia (Van Hall) Bergy et al. and P. syringae Burkholder, were the most effective antagonists from over 100 isolates tested against Penicillium digitatum Sacc. and Penicillium italicum Wehmer rots on citrus fruit. Overall, P. cepacia provided the best protection against both of these rots. P. cepacia produced antibiotic zones against the two Penicillia rot organisms in culture, whereas P. syringae, D. hansenii and A. pullulans did not. All four antagonists show promise as biocontrol agents.

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