Electron microscopy of mycoplasma-like bodies associated with insect and plant hosts of peach Western X-disease☆

摘要: Abstract Preparations of the leafhopper, Colladonus montanus (Van Duzee) and celery, Apium graveolens L., were examined in electron microscope. Mycoplasma-like bodies ranging from 200 to 400 nm diameter found tissues leafhoppers phloem cells celery infected with Western X-disease. The X mycoplasma-like (WXM) intestine leafhopper 19 days after acquisition feeding on diseased brain 20 injection extract; WXM also inoculation. Large, transparent bodies, either spherical or pleomorphic form, small, commonly observed during early stages multiplication, whereas dense at later stage multiplication. A second body, apparently unrelated X-disease, was both healthy leafhoppers, but never celery.