DR KARI LOUNATMAA / SCIENCE PHOTO LIBRARY DR KARI LOUNATMAA / SCIENCE PHOTO LIBRARY
Erwinia bacteria. Coloured transmission electron micrograph (TEM) of the soil bacterium Erwinia carotovora carotovora. This gram-negative flagellated bacterium causes soft rot of plant crops such as potato, cabbage and carrot. It is found worldwide, and can survive in soil and surface water when not infecting the roots of plants.
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