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אסיף מאגר המחקר החקלאי
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Biological Aspects of Citrus Molds Tolerant to Benzimidazole Fungicides
Year:
1981
Source of publication :
Phytopathology
Authors :
Gutter, Yakir
;
.
Schiffmann-Nadel, Mina
;
.
Volume :
71
Co-Authors:

A. Shachnai and A. Dinoor

Facilitators :
From page:
482
To page:
487
(
Total pages:
6
)
Abstract:

A survey of the incidence and occurrence in Israel of strains of the green and blue molds of citrus (Penicillium digitatum and P. italicum, respectively) tolerant to benzimidazoles revealed that their incidence was low in the orchards, medium in the packinghouses, and high in the storage rooms. Strains were found that are tolerant to concentrations of benzimidazoles 500–1,000 times greater than those required to inhibit the sensitive “wild types.” The antifungal properties of benomyl were, in all cases, greater than those of thiabendazole at equal concentrations. All tolerant isolates under study were also tolerant to other compounds of the benzimidazole group—carbendazim, cypendazole, fuberidazole, and thiophanate-ethyl. A relatively constant degree of tolerance was maintained even after 16 weekly transfers to a fungicide-free medium or after inoculation to and recovery from untreated citrus fruits. Our results suggest that tolerant strains were capable of surviving extended periods along with the susceptible strains even in the absence of selection pressure.

Note:
Related Files :
Benzimidazoles
Citrus
Decay
fungi
fungicides
molds
pest control
plant diseases and disorders
plant rots
Resistance
Show More
Related Content
More details
DOI :
10.1094/Phyto-71-482
Article number:
0
Affiliations:
Database:
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
57094
Last updated date:
02/03/2022 17:27
Creation date:
29/11/2021 11:35
Scientific Publication
Biological Aspects of Citrus Molds Tolerant to Benzimidazole Fungicides
71

A. Shachnai and A. Dinoor

Biological Aspects of Citrus Molds Tolerant to Benzimidazole Fungicides

A survey of the incidence and occurrence in Israel of strains of the green and blue molds of citrus (Penicillium digitatum and P. italicum, respectively) tolerant to benzimidazoles revealed that their incidence was low in the orchards, medium in the packinghouses, and high in the storage rooms. Strains were found that are tolerant to concentrations of benzimidazoles 500–1,000 times greater than those required to inhibit the sensitive “wild types.” The antifungal properties of benomyl were, in all cases, greater than those of thiabendazole at equal concentrations. All tolerant isolates under study were also tolerant to other compounds of the benzimidazole group—carbendazim, cypendazole, fuberidazole, and thiophanate-ethyl. A relatively constant degree of tolerance was maintained even after 16 weekly transfers to a fungicide-free medium or after inoculation to and recovery from untreated citrus fruits. Our results suggest that tolerant strains were capable of surviving extended periods along with the susceptible strains even in the absence of selection pressure.

Scientific Publication
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