A total of 20 petioles and five stolons on each of four separate strawberry plants each received injections of 500 ml Lform
inoculum at a single site less than 5 cm from its attachment to the mother plant. BS1 L-forms were prepared by centrifugation of exponential cultures in LPB, resuspended in 5% (w/v) mannitol. Four control plants were exposed to identical treatments using mannitol only. All plants were maintained