Role of microorganisms in soil bioremediation / Jean-Marc Bollag, Tawna Mertz, and Lewis Otjen -- Toxicant degradation in the rhizosphere / Barbara T. Walton, Elizabeth A. Guthrie, and Anne M. Hoylman -- Polyphenolic compounds respired by bacteria / Andrei L. Barkovskii, Marie-Louise Boullant, and Jacques Balandreau -- Effect of nutrients on interaction between pesticide pentachlorophenol and microorganisms in soil / Kyo Sato -- Intact rhizosphere microbial communities used to study microbial biodegradation in agricultural and natural soils : influence of soil organic matter on mineralization kinetics / David B. Knaebel and J. Robie Vestal -- Influence of plant species on in situ rhizosphere degradation / Jodi R. Shann and J.J. Boyle -- Rhizosphere microbial communities as a plant defense against toxic substances in soils / Barbara T. Walton, Anne M. Hoylman, Mary M. Perez, Todd A. Anderson, Theodore R. Johnson, Elizabeth A. Guthrie, and Russell F. Christman -- Potential use of mycorrhizal fungi as bioremediation agents / Paula K. Donnelly and John S. Fletcher -- Dehalogenation of chlorinated phenols during binding to humus / Jerzy Dec and Jean-Marc Bollag -- Alfalfa plants and associated microorganisms promote biodegradation rather than volatilization of organic substances from ground water / Lawrence C. Davis, N. Muralidharan, V.P. Visser, C. Chaffin, W.G. Fateley, L.E. Erickson, and R.M. Hammaker -- Volatilization and mineralization of naphthalene in soil-grass microcosms / J.W. Watkins, D.L. Sorensen, and R.C. Sims -- Biologically mediated dissipation of polyaromatic hydrocarbons in the root zone / A.P. Schwab and M.K. Banks -- Grass-enhanced bioremediation for clay soils contaminated with polynuclear aromatic hydrocarbons / X. Qiu, S.I. Shah, E.W. Kendall, D.L. Sorensen, R.C. Sims, and M.C. Engelke -- Propanil metabolism by rhizosphere microflora / Robert E. Hoagland, Robert M. Zablotowicz, and Martin A. Locke -- Glutathione S-transferase activity in rhizosphere bacteria and the potential for herbicide detoxification / Robert M. Zablotowicz, Robert E. Hoagland, and Martin A. Locke -- Biological degradation of pesticide wastes in the root zone of soils collected at an agrochemical dealership / Todd A. Anderson, Ellen L. Kruger, and Joel R. Coats -- Plant and microbial establishment in pesticide-contaminated soils amended with compost / Michael A. Cole, Xianzhong Liu, and Liu Zhang.