Abstract
Mycoplasmas in the phloem of V. rosea were examined in thin sections and freeze-etchings. The plasmalemma of the parasite possessed evenly distributed particles on both fracture faces; particle diameters ranged from 8.7 to 13.2 nm. Vesicles in some mycoplasmas were found, in serial sections, to be wholly intracellular. Vesicles occurred most frequently in mycoplasmas thought to be senescent (characterized by swollen cells with very electron-lucent cytoplasm and a few nucleic acid strands). The fracture faces of the vesicular membranes lacked particles, and irregularly shaped regions 16 to 24 nm in diameter were demarcated by furrows. The functional significance of this unusual membrane structure was not determined.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call