RICKETTSIAE: (WINDSOR AND BLACK, 1972)
FASTIDIOUS VASCULAR BACTERIA
• are non-motile bacteria measuring about 200 -300 nm in
diameter, have cell wall, plasma membrane and cytoplasm
containing ribosomes and DNA strands and are obligate:
• 1. Multiply by binary fission
• 2. Contain enzyme for ATP production
e.g. Club leaf of clover, citrus greening