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Symbiotic gene exchange between Rhizobium trifolii strains in soil

, : Symbiotic gene exchange between Rhizobium trifolii strains in soil. Temperate pastures: their production, use and management: 208-210

Effective (nitrogen-fixing) inoculant strains of Rhizobium trifolii are commonly replaced in many soils by other effective strains not detected previously. This suggests that genetic exchange may occur with ecologically-adapted but less effective naturally-ocurring strains. Cloned DNA fragments were used as molecular probes to characterize a small population of field isolates of Rhizobium trifolii from white clover.

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