A consolidated analysis of the physiological and molecular responses induced under acid stress in the legume symbiont model soil bacterium Sinorhizobium meliloti

ABSTRACT: Abiotic stresses disturb and limit nitrogen-fixing symbioses between rhizobia and their host legumes. In particular, the effect of extracellular acidity on rhizobia has been taken as a model example for analysis because of the economic impact and worldwide distribution of these symbionts in agricultural countries. Except for valuable molecular-biological studies on different rhizobia, no consolidated models have been formulated to describe the central physiologic changes that occur in acid-stressed bacteria. We present here an integrated analysis entailing the main cultural, metabolic, and molecular responses of the model bacterium Sinorhizobium meliloti growing under controlled acid stress in a chemostat. A stepwise extracellular acidification of the culture medium had indicated that S. m

ORGANISM(S): Sinorhizobium meliloti

SUBMITTER: Antonio Lagares 

PROVIDER: E-GEOD-74449 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress