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What is this?
Pictures contributed by Larry Halverson.
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Pseudomonas putida is a gram-negative bacterial species commonly found in the soil. These filamented cells were labeled with the green fluorescent reporter protein and were visualized by fluorescence microscopy.
As a habitat, the soil is highly variable in the availability of water to the bacterial residents, and cells may experience temporary high osmolarity conditions. P. putida cells are normally only 1-3 µm in length, but can become greatly elongated when grown in the presence of high salt conditions. P. putida under 1 M NaCl produced the spiral and P. putida as spaghetti was on 1.5 M NaCl media.
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