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Cover photograph: Transmission electron micrographs of wild-type (top) and phoU mutant (bottom) cells of the Gram-negative alphaproteobacterium Sinorhizobium meliloti. The cells were cultured in morpholinepropanesulfonic acid-buffered minimal medium with 7.5… Click to show full abstract
Cover photograph: Transmission electron micrographs of wild-type (top) and phoU mutant (bottom) cells of the Gram-negative alphaproteobacterium Sinorhizobium meliloti. The cells were cultured in morpholinepropanesulfonic acid-buffered minimal medium with 7.5 mM glucose and 2 mM KH2PO4. Unlike the uniform rod-shaped wild-type cells, the phoU mutant cells are enlarged and pleomorphic, accumulate polyphosphate, and have lost viability. Samples were fixed in 2% (vol/vol) glutaraldehyde and poststained with uranyl acetate and lead citrate. The scale bar represents 0.5 m, and the magnifications of the panels are equal. (See related article at e00143-17.) (Copyright © 2017 American Society for Microbiology. All Rights Reserved.)
Journal Title: Journal of Bacteriology
Year Published: 2017
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