01323naa a2200145 a 450000100080000000500110000800800410001910000130006024501400007326000090021352008760022270000170109870000160111577300460113116501322001-05-17       2000    bl ---       0--  u    #d1 aOGER, P.  aEffect of crop rotation and soil cover on alteration the soil microflora generated by the culture of transgenic plants producing opines  c2000  aThe culture of transgenic Lotus corniculatus olants producing opines, which are bacterial growth substrates, leads to the selection of rhizospheric bacteria able to utilize these substrates. We have investigated the fate of the opine-utilizing community over time under different experimental conditions following elimination of selective presure exerted by the transgenic plants. These plants were removed from the soil, which was either left unplanted or replanted with\twild-type L. corniculatus or wheat plants. The density of opine-utilizing bacteria in the fallow soils remained essentially unchanged throughout the experiment, regardless of the soil of origin (soil planted with wild-type or transgenic plants). When wild-type Lotus plants were used to replace their transgenic counterparts, only the bacterial poplations able to utilize the opinies were affected.1 aMANSOURI, H.1 aDESSAUX, Y.  tMolecular Ecology.gv.9, p.881-890, 2000.