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25.0 MB (1.4 MB compressed)
2725 x 3207 pixels
23.1 x 27.2 cm ⏐ 9.1 x 10.7 in (300dpi)
DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) of Pseudomonas syringae, Gram-negative, aerobic, rod prokaryote. P. syringae is a saprophytic strain that is a primarily a plant pathogen that was originally isolated from an apple leaf. There are 41 pathovars of P. syringae which are able to cause diseases on various plants. An antagonistic strain occurs as a non-pathogenic counterpart and the strain is antagonistic towards pathogens on many plants, especially fungi. It can grow well on wounded plant tissue and can control a variety of diseases on different fruits, including pome fruits, banana, and citrus fruits as well as vegetables. Pseudomonas species are able to grow in extreme environments. Any carbon or hydrocarbon source is a suitable place for them to live. Most Pseudomonas species produce a slime layer that cannot be phagocytosed, and aids in the production of surface-colonizing biofilms. Magnification: x3,400 when shortest axis printed at 25.
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