Title:Cultural conditions required for the induction of an adaptive acid-tolerance response (ATR) in Sinorhizobium meliloti and the question as to whether or not the ATR helps rhizobia improve their symbiosis with alfalfa at low pH
Title:Potential responses of oligochaetes (Annelida, Clitellata) to global changes: experimental fertilization in a lowland stream of Argentina (South America)