Table 2.
Isolateb | Location and yr of isolation | MgCYP51 substitutions(s) | Mean EC50 (mg liter−1)a |
|||||
---|---|---|---|---|---|---|---|---|
Epoxiconazole | Tebuconazole | Triadimenol | Prochloraz | Prothioconazole | Propiconazole | |||
IPO323 | North Brabant, Netherlands; 1981 | None (wt) | 0.0019 | 0.053 | 0.927 | 0.027 | 0.051 | 0.008 |
MM20 | Aragon, Spain; 2006 | None (wt) | 0.0017 | 0.063 | 0.714 | 0.016 | 0.194 | 0.014 |
MBC/ST1 | UK; 1973 | None (wt) | 0.0069 | 0.146 | 1.45 | 0.021 | 0.091 | 0.022 |
Bd17 | Aragon, Spain; 2006 | None (wt) | 0.001 | 0.026 | 0.366 | 0.002 | 0.056 | 0.005 |
Mean | 0.0028 | 0.072 | 0.864 | 0.016 | 0.098 | 0.012 | ||
Avg deviation | 0.002 | 0.037 | 0.324 | 0.007 | 0.048 | 0.0057 | ||
Mean RF | 1 | 1 | 1 | 1 | 1 | 1 | ||
Rd9 | Reading, UK; 1993 | Y137F | 0.0263 | 0.299 | 18 | 0.115 | 0.081 | 0.141 |
Rd13 | Reading, UK; 1993 | Y137F | 0.0098 | 0.212 | 10.6 | 0.078 | 0.046 | 0.048 |
Bd13 | Aragon, Spain; 2006 | Y137F | 0.0076 | 0.176 | 8.2 | 0.033 | 0.01 | 0.028 |
4414 | Belarus; 2007 | Y137F | 0.0153 | 0.36 | 22.1 | 0.109 | 0.092 | 0.108 |
Mean | 0.0148 | 0.262 | 14.73 | 0.084 | 0.073 | 0.081 | ||
Avg deviation | 0.006 | 0.068 | 5.32 | 0.028 | 0.018 | 0.043 | ||
Mean RF | 5 | 4 | 17 | 5 | 1 | 7 | ||
CTRL-01 | Harpenden, UK; 2001 | Y137F, S524T | 0.093 | 0.736 | >35 | 0.626 | 0.063 | 0.401 |
4362 | Denmark; 2007 | Y137F, S524T | 0.145 | 1.01 | 26.2 | 0.451 | 0.293 | 0.493 |
R03-25 | Harpenden, UK; 2003 | Y137F, S524T | 0.205 | 1.47 | 30.3 | 0.682 | 0.322 | 0.917 |
R03-31 | Harpenden, UK; 2003 | Y137F, S524T | 0.058 | 0.379 | 23.8 | 0.433 | 0.284 | 0.235 |
R03-45 | Harpenden, UK; 2003 | Y137F, S524T | 0.067 | 0.842 | 14.2 | 0.491 | 0.238 | 0.251 |
Mean | 0.114 | 0.887 | 27.9 | 0.537 | 0.241 | 0.459 | ||
Avg deviation | 0.049 | 0.282 | 4.7 | 0.095 | 0.072 | 0.196 | ||
Mean RF | 41 | 12 | 32 | 34 | 3 | 38 | ||
Bd12 | Aragon, Spain; 2006 | L50S, Y461S | 0.0404 | 1.47 | 13.5 | 0.134 | 0.314 | 0.318 |
IC6 | Ireland; 2003 | L50S, Y461S | 0.0814 | 1.28 | 6.7 | 0.118 | 0.553 | 0.196 |
R03-6 | Harpenden, UK; 2003 | L50S, Y461S | 0.0401 | 1.68 | 13.4 | 0.212 | 0.556 | 0.272 |
Mean | 0.0539 | 1.48 | 11.19 | 0.154 | 0.474 | 0.262 | ||
Avg deviation | 0.018 | 0.135 | 3 | 0.038 | 0.11 | 0.044 | ||
Mean RF | 19 | 21 | 13 | 10 | 1 | 22 | ||
SAC56.1 | Edinburgh, UK; 2006 | L50S, V136A, Y461S | 0.291 | 0.198 | 5.59 | 0.771 | 2.28 | 1.32 |
RF | 104 | 3 | 7 | 48 | 23 | 110 | ||
IC1 | Ireland; 2008 | L50S, V136A, Y461S, S524T | 0.268 | 0.372 | 4.86 | 1.37 | 12.8 | 2.13 |
IC4 | Ireland; 2008 | L50S, V136A, Y461S, S524T | 0.493 | 0.493 | 6.76 | 0.835 | 3.88 | 2.48 |
IC5 | Ireland; 2008 | L50S, V136A, Y461S, S524T | 0.381 | 0.134 | 3.08 | 0.769 | 2.29 | 1.49 |
I43-2 | Carlow, Ireland; 2009 | L50S, V136A, Y461S, S524T | 1.33 | 0.151 | 14.6 | 0.603 | 5.66 | 1.58 |
Mean | 0.618 | 0.288 | 7.33 | 0.894 | 6.16 | 1.92 | ||
Avg deviation | 0.28 | 0.12 | 2.91 | 0.19 | 2.66 | 0.31 | ||
Mean RF | 220 | 4 | 8 | 56 | 63 | 160 | ||
TAG71-3 | Andover, UK; 2009 | L50S, D134G, V136A, Y461S, S524T | 0.6 | 0.47 | 15.8 | 2.67 | >35 | 1.87 |
RF | 215 | 7 | 18 | 167 | >357 | 156 |
EC50s are the means of two independent experiments. Mean resistance factors (RF) of isolates carrying the same MgCYP51 variant calculated as the fold changes in mean EC50 compared to mean EC50s of wild-type isolates.
Isolates Rd9 and Rd13 were supplied by Mike Shaw (University of Reading), isolates 4414 and 4362 were supplied by Gert Stammler (BASF), and isolates IC1, IC4, IC5, and IC6 were supplied by Eugene O'Sullivan (Teagase).