Bioavailability, Chemotaxis, and Transport of Organic Pollutants
Rebecca E. Parales, Kou-San Ju, Janet B. Rollefson, and Jayna L. Ditty
from: Microbial Biodegradation: Genomics and Molecular Biology (Edited by: Eduardo Díaz). Caister Academic Press, U.K. (2008)
Bacterial pathways for the degradation of organic pollutants have been the subject of intense study for decades. However, important physiological events that precede the catabolism of these compounds have recently been receiving significant scientific attention. Bioavailability, or the amount of a substance that is physiochemically accessible to microorganisms is a key factor in the efficient biodegradation of pollutants. Chemotaxis, or the directed movement of motile organisms towards or away from chemicals in the environment is an important physiological response that may contribute to effective catabolism of molecules in the environment. In addition, mechanisms for the intracellular accumulation of aromatic molecules via various transport mechanisms are beginning to receive more attention. An overview of our current understanding of these important sensing and acquisition events that occur prior to biodegradation is presented read more ...