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sheathed bacteria |
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sheathed bacteriaGroup of bacteria found widely in nature in slow-running water. Many species are attached to underwater surfaces. They are characterized by a threadlike, branching arrangement of cells enclosed in a sheath. The sheaths of some are variously encrusted with iron or manganese oxides, depending on the water. One of the best-known is a common species, Sphaerotilus natans; in polluted water it has thin, colourless sheaths, and in unpolluted water containing iron it has yellow-brown, iron-encrusted sheaths that often grow into long slimy tassels. sheathed bacteria [′shēthd bak′tir·ē·ə] (microbiology) Chains of bacterial cells, usually rod-shaped, enclosed in a hyaline envelope or sheath. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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