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SPECIAL SESSION: Propagate Plants, not Pests and Pathogens

Secret Passages: Cryptic infections (and human foibles) pose challenges for ensuring clean plant material
Melodie Putnam - Oregon State University.

Production of pathogen-free plants can be subverted by organisms that are present in low numbers, have a latent phase, are systemic, or are difficult to detect because of equivocal symptoms. Agrobacterium tumefaciens and pathogenic Rhodococcus regularly defeat stringent sanitation and clean plant protocols, as will be illustrated using case studies from the Oregon State University Plant Clinic. Pathogen biology, gaps in knowledge, and human failings contribute to ongoing disease problems.