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|a 10.1094/PDIS-92-4-0555
|2 doi
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|a eng
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| 100 |
1 |
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|a Rosenzweig, N
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Monitoring and Tracking Changes in Sensitivity to Azoxystrobin Fungicide in Alternaria solani in Wisconsin
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| 264 |
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|c 2008
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| 336 |
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Azoxystrobin is a common fungicide used by farmers of Solanaceous crops against Alternaria solani, but there was growing concern about decreased sensitivity with repeated applications. In 2002 and 2003, monitoring of A. solani from commercial potato fields in Wisconsin indicated increased frequency and a statewide distribution of isolates with decreased in vitro sensitivity to azoxystrobin. Mean effective concentration in inhibiting spore germination by 50% values gathered in 2002 and 2003 were approximately 20-fold higher than baseline isolates of A. solani collected in 1998 from fields that had never been treated with azoxystrobin. This sensitivity decrease was correlated with site-specific mutations in the cytochrome b detected by quantitative real-time polymerase chain reaction. The F129L and the G143A substitution have been shown to cause a reduction in sensitivity or resistance, respectively, to quinone outside inhibitors. All of the recovered A. solani isolates collected in 2002 and 2003 were wild type at position 143. However, all three mutations responsible for the F129L substitution (TTA, CTC, and TTG) were detected in our samples. In addition, the frequency of this amino acid substitution in A. solani isolates was statistically different across sampling sites and years, indicating that sensitivity changes depended on specific disease management practices
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| 650 |
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4 |
|a Journal Article
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| 650 |
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4 |
|a QoI
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| 650 |
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4 |
|a fungicide resistance
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| 650 |
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4 |
|a quantitative PCR
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| 700 |
1 |
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|a Olaya, G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Atallah, Z K
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cleere, S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stanger, C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stevenson, W R
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
|d 1997
|g 92(2008), 4 vom: 11. Apr., Seite 555-560
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|x 0191-2917
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|g volume:92
|g year:2008
|g number:4
|g day:11
|g month:04
|g pages:555-560
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|u http://dx.doi.org/10.1094/PDIS-92-4-0555
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