נגישות
menu      
Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Erwinia amylovora populations resistant to oxolinic acid in Israel: Prevalence, persistence and fitness
Year:
2005
Source of publication :
Plant Pathology
Authors :
Blachinsky, Daphna
;
.
Dror, Orit
;
.
Kleitman, Frida
;
.
Shtienberg, Dan
;
.
Volume :
54
Co-Authors:
Kleitman, F., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Shtienberg, D., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Blachinsky, D., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Oppenheim, D., Department of Plant Protection, Min. of Agric. and Rural Development, Extension Service, Bet Dagan 50250, Israel
Zilberstaine, M., Department of Plant Protection, Min. of Agric. and Rural Development, Extension Service, Bet Dagan 50250, Israel
Dror, O., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Manulis, S., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
108
To page:
115
(
Total pages:
8
)
Abstract:
Oxolinic acid (OA) has been the only bactericide used against fire blight in pear and quince orchards in Israel since 1998. OA-resistant Erwinia amylovora strains (Ea-OAR) were detected in several orchards in two restricted areas in the northern Galilee region during 1999-2001. In the following years, resistant strains could not be detected in some of these locations. Documenting the fate of Ea-OAR strains in commercial orchards at eight sites in northern Israel during 2000/03 revealed that the resistant population appeared irrespective of the number of sprays applied and the severity of the disease. The persistence of the Ea-OAR populations varied from site to site, ranging from 4 to 20 months; these differences could be attributed to the fire blight management activities of growers. Comparative studies on the fitness of Ea-OAR and E. amylovora strains sensitive to OA (Ea-OAS) were conducted in vitro and in planta using two strains of each group. In four of the six comparisons, disease incidence on detached blossoms inoculated with Ea-OAS was significantly higher than that on blossoms inoculated with Ea-OAR. In two experiments conducted on 8-year-old pear trees grown under netting, the colonization of Ea-OAS in blossoms, annual shoots and perennial spurs was significantly higher than that of the Ea-OAR. In two experiments conducted on 2-year-old trees grown under netting in an experimental station, the incidence of shoots exhibiting fire blight symptoms and the rate of symptom progress within the branches were significantly higher in trees inoculated with Ea-OAS than in those inoculated with Ea-OAR. The results of this study suggest that OA-resistant E. amylovora strains have lower fitness than wild-type strains. These findings may have implications for fire blight management. © 2005 BSPP.
Note:
Related Files :
Apple
disease incidence
Erwinia amylovora
fire blight
Galilee
Israel
pesticide resistance
Quince
Show More
Related Content
More details
DOI :
10.1111/j.1365-3059.2005.01146.x
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29964
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:50
You may also be interested in
Scientific Publication
Erwinia amylovora populations resistant to oxolinic acid in Israel: Prevalence, persistence and fitness
54
Kleitman, F., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Shtienberg, D., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Blachinsky, D., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Oppenheim, D., Department of Plant Protection, Min. of Agric. and Rural Development, Extension Service, Bet Dagan 50250, Israel
Zilberstaine, M., Department of Plant Protection, Min. of Agric. and Rural Development, Extension Service, Bet Dagan 50250, Israel
Dror, O., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Manulis, S., Dept. of Plant Pathol. and Weed Res., ARO, Volcani Center, Bet Dagan 50250, Israel
Erwinia amylovora populations resistant to oxolinic acid in Israel: Prevalence, persistence and fitness
Oxolinic acid (OA) has been the only bactericide used against fire blight in pear and quince orchards in Israel since 1998. OA-resistant Erwinia amylovora strains (Ea-OAR) were detected in several orchards in two restricted areas in the northern Galilee region during 1999-2001. In the following years, resistant strains could not be detected in some of these locations. Documenting the fate of Ea-OAR strains in commercial orchards at eight sites in northern Israel during 2000/03 revealed that the resistant population appeared irrespective of the number of sprays applied and the severity of the disease. The persistence of the Ea-OAR populations varied from site to site, ranging from 4 to 20 months; these differences could be attributed to the fire blight management activities of growers. Comparative studies on the fitness of Ea-OAR and E. amylovora strains sensitive to OA (Ea-OAS) were conducted in vitro and in planta using two strains of each group. In four of the six comparisons, disease incidence on detached blossoms inoculated with Ea-OAS was significantly higher than that on blossoms inoculated with Ea-OAR. In two experiments conducted on 8-year-old pear trees grown under netting, the colonization of Ea-OAS in blossoms, annual shoots and perennial spurs was significantly higher than that of the Ea-OAR. In two experiments conducted on 2-year-old trees grown under netting in an experimental station, the incidence of shoots exhibiting fire blight symptoms and the rate of symptom progress within the branches were significantly higher in trees inoculated with Ea-OAS than in those inoculated with Ea-OAR. The results of this study suggest that OA-resistant E. amylovora strains have lower fitness than wild-type strains. These findings may have implications for fire blight management. © 2005 BSPP.
Scientific Publication
You may also be interested in