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Cover Figure


Cover photograph (Copyright © 2002, American Society for Microbiology. All Rights Reserved.): Tomato plant whose root surfaces are colonized with a multitude of microbes, among them Pseudomonas putida. Under intense competition, microbial population selection will favor any mutant that can gain access to limited growth sources. Mutation processes in cells that have been starved for short periods are not entirely compatible with prolonged starvation, at least in P. putida. (See related article on page 6957.)


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