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פותח על ידי קלירמאש פתרונות בע"מ -
Vegetative compatibility groups in Colletotrichum coccodes, the causal agent of black dot on potato
Year:
2002
Source of publication :
Phytopathology
Authors :
חזנובסקי, מרינה
;
.
צרור, לאה
;
.
Volume :
92
Co-Authors:
Nitzan, N., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Hazanovsky, M., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Tal, M., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Tsror, L., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Facilitators :
From page:
827
To page:
832
(
Total pages:
6
)
Abstract:
Black dot of potato, caused by Colletotrichum coccodes, is a disease of growing economic importance, but the degree of genetic diversity and pathogenic differentiation among isolates is unknown. Using nitrate auxotrophic (Nit) mutants, we characterized vegetative compatibility groups (VCG) diversity for C. coccodes for 110 isolates originating from Israel, The Netherlands, and France. We recovered frequencies of nit1 and NitM mutant classes at 38.5 and 7.2%, respectively, and selected 12 isolates as tester isolates. Using these testers, we defined four multi-member VCGs at 7.3, 35.5, 20.0, and 10.0% frequency in this sample. Thirty isolates (27.3% of all tested isolates) could not be assigned to any of the major groups, and showed only self-compatibility. The frequency of recovery of Nit mutant sectors was highest in isolates from VCG4, with 50.9 and 13.6% recovery for nit1 and NitM, respectively. However, we did not detect differences in the frequency of mutant classes among the three countries of origin. In pathogenicity tests, isolates from VCG3 were the most aggressive to potato, as expressed by high stem colonization levels and sclerotia density on root and crown. These results suggest that there is significant VCG diversity in this species and that this VCG diversity may be correlated with pathogenic characteristics or specialization.
Note:
Related Files :
auxotrophy
Black dot
fungal isolate
fungus mutant
gene frequency
self compatibility
vegetative growth
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32603
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:11
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Scientific Publication
Vegetative compatibility groups in Colletotrichum coccodes, the causal agent of black dot on potato
92
Nitzan, N., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Hazanovsky, M., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Tal, M., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Tsror, L., Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
Vegetative compatibility groups in Colletotrichum coccodes, the causal agent of black dot on potato
Black dot of potato, caused by Colletotrichum coccodes, is a disease of growing economic importance, but the degree of genetic diversity and pathogenic differentiation among isolates is unknown. Using nitrate auxotrophic (Nit) mutants, we characterized vegetative compatibility groups (VCG) diversity for C. coccodes for 110 isolates originating from Israel, The Netherlands, and France. We recovered frequencies of nit1 and NitM mutant classes at 38.5 and 7.2%, respectively, and selected 12 isolates as tester isolates. Using these testers, we defined four multi-member VCGs at 7.3, 35.5, 20.0, and 10.0% frequency in this sample. Thirty isolates (27.3% of all tested isolates) could not be assigned to any of the major groups, and showed only self-compatibility. The frequency of recovery of Nit mutant sectors was highest in isolates from VCG4, with 50.9 and 13.6% recovery for nit1 and NitM, respectively. However, we did not detect differences in the frequency of mutant classes among the three countries of origin. In pathogenicity tests, isolates from VCG3 were the most aggressive to potato, as expressed by high stem colonization levels and sclerotia density on root and crown. These results suggest that there is significant VCG diversity in this species and that this VCG diversity may be correlated with pathogenic characteristics or specialization.
Scientific Publication
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