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Induction of the pmelA-gfp reporter in the rhizosphere of alfalfa seedlings grown in artificial medium. (A) Fluorescent micrograph of the control strain Rm1021/pRB29 inoculated onto the roots of alfalfa seedlings grown on BNM. (B) Fluorescent micrograph of the pmelA-gfp reporter strain Rm1021/pRB27 inoculated onto the roots of alfalfa seedlings grown on BNM. (Bars = 100 μm.)
