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Mycoplasmalike Bodies Associated with Peach and Periwinkle Exhibiting Symptoms of Peach Yellows. A. L. Jones, Associate Professor, Department of Botany and Plant Pathology, Michigan State University, East Lansing 48824; G. R. Hooper(2), D. A. Rosenberger(3), and J. Chevalier(4). (2)Director, Electron Optics Laboratory and Associate Professor, Michigan State University, East Lansing 48824; (3)Research Assistant, Department of Botany and Plant Pathology, Michigan State University, East Lansing 48824; (4)Laboratory Technician, Department of Botany and Plant Pathology, Michigan State University, East Lansing 48824. Phytopathology 64:1154-1156. DOI: 10.1094/Phyto-64-1154.

Mycoplasmalike bodies (MLB) were found associated with peach trees exhibiting peach yellows symptoms, and in Vinca rosea following dodder transmission from peach. They were present, often in large numbers, in phloem cells and were delimited by a unit membrane. Small (124-nm diam), filamentous, dark-staining bodies predominated in the phloem parenchyma. The MLB appeared to contain ribosomelike bodies and strands of DNA, and were morphologically indistinguishable from MLB associated with other yellows-type diseases.