IDENTIFICATION OF A GENE IN ARABIDOPSIS-THALIANA THAT CONTROLS RESISTANCE TO XANTHOMONAS-CAMPESTRIS PV CAMPESTRIS

Xanthomonas campestris pv. campestris caused black rot disease when inoculated via the hydathodes and caused a spreading chlorosis when infiltrated into the leaves of Arabidopsis thaliana race PrØ. In contrast, leaves of Arabidopsis race Columbia were resistant to X. c. campestris and were slightly chlorotic or symptomless when inoculated by either method of inoculation. By genetic analysis, we found that resistance to X. c. campestris was determined by a dominant allele of a single, nuclear gene. © 1991 Academic Press Limited.