CCD detection of lux-marked Pseudomonas syringae pv. phaseolicola L-forms associated with Chinese cabbage and the resulting disease protection against Xanthomonas campestris

R.N. WATERHOUSE, H. BUHARIWALLA, D. BOURN, E.J. RATTRAY AND L.A. GLOVER. 1996. CCD image‐enhancement was used to detect lux‐marked Pseudomonas syringae pv. phaseolicola L‐form bacteria in association with Chinese cabbage. Bioluminescence from colonizing bacteria was maximal 8 d after association. Bioluminescing L‐forms were reisolated from 22 d post‐association tissue. L‐forms but not parental, cell‐walled forms, were effective at inducing protection against a heterologous pathogen (Xanthomonas campestris).