Publications

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molecular and evolutionary analyses of pseudomonas syringae pv. tomato race 1.pseudomonas syringae pv. tomato, the causal agent of bacterial speck of tomato, has recently become an increasing problem in california due to the evolution and prevalence of highly aggressive race 1 strains. in resistant plant genotypes, the type iii effectors avrpto and avrptob are recognized by the tomato proteins pto and prf. we investigated the prevalence of avrpto and avrptob in strains collected over the last 13 years in california. all race 1 strains retained avrptob but did not express ...201020192829
distribution of ice nucleation-active bacteria on plants in nature.a replica plating method for rapid quantitation of ice nucleation-active (ina) bacteria was developed. leaf washings of plant samples from california, colorado, florida, louisiana, and wisconsin were tested for the presence of ina bacteria. of the 95 plant species sampled, 74 were found to harbor ina bacteria. only the conifers were, as a group, unlikely to harbor ina bacteria. all of the ina bacteria isolated resembled either pseudomonas syringae or erwinia herbicola. sufficient numbers of ina ...1978736541
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