TABLE 1

Arabidopsis thaliana accessions and their avrRpt2-dependent resistance phenotypes

AccessionGeographic originResistanceaRelative resistancebPhenotypic categoryc
Po-1Germany–0.45S
Knox-2Indiana–0.26S
rps2-101C Columbia mutant–0.14S
BG-4Seattle0.08S
Zu-0Switzerland0.1S
Yo-0California0.68*0.285***mR
AB-7Indiana0.77***0.550*mR
Pu-8Czech Republic1.09**Rd
Wu-0Germany1.46***0.627**mR
GR-6Michigan1.56***0.657mR
Cvi-0Cape Verde Islands1.45***0.670mR
Ang-0Belgium1.28***0.945R
Col-0Columbia, SC1.71***1R
Kas-1Kashmir, India1.91***1.010R
Ct-1Catania, Italy1.10***1.072R
Bur-0Burren, Ireland2.12***1.099R
Mt-0Libya1.94***1.099R
Bla-2Spain2.21***1.104R
Gott-20Germany2.07***1.143R
Pog-0B. C., Canada2.52***1.392sR
RLD-1Russia2.56***1.547**sR
Co-1Portugal2.97***1.556sR
Tsu-0Japan3.77***1.611***sR
FM-17Ithaca, NYND
HS-12MassachusettsND
C2-1N. CarolinaND
Tamm-17FinlandND
G2-1N. CarolinaND
D2-9N. CarolinaND

ND, not determined.

  • a Resistance is log of growth for the strain without avrRpt2 minus that for the strain with avrRpt2. ANOVA significance values determine resistance or susceptibility designation.

  • P < 0.10

  • * P < 0.05

  • ** P < 0.01

  • *** P < 0.001.

  • b Relative resistance is the resistance value for the accession divided by that for Columbia in the same experiments. ANOVA P values are indicated as for resistance.

  • c avrRpt2-dependent resistance phenotypic categories are S, susceptible; mR, mildly resistant; R, resistant; and sR, strongly resistant. Assignment of categories was determined by the relative resistance values.

  • d Pu-8 is significantly Rps2-dependent resistant, but its relative resistance level could not be accurately determined.