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Dynamics of (A) the parental strain, (B) the response-negative mutant and (C) the signal-negative mutant populations in sterilized soil microcosms. (♦) Single culture, (
) co-culture with the parental strain, (
) co-culture with the response-negative mutant, (
) co-culture with the signal-negative mutant. Error bars represent the standard deviation from three replicate samples value.
