Biostimulation of PCB-degrading bacteria by compounds released from plant roots

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:490979

Fletcher, J S; Hegde, R S ^[1]; Donnelly, P K ^[2]

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1. Univ. of Oklahoma, Norman, OK (United States). Dept. of Botany and Microbiology
2. Santa Fe Junior Coll., NM (United States)

Flavonoid and coumarin compounds produced by plants supported the growth of polychlorinated biphenyl (PCB)-degrading bacteria, and the bacteria retained their PCB-degrading properties. Root leachates and washings from mulberry trees also supported the growth of a PCB-degrading bacterium. These results indicate that chemicals released by some plant roots may serve as cometabolites for PCB-degrading bacteria. Identification of the right plant species and development of appropriate cultivation practices promises to lead to an ecologically sound means to achieve sustained in situ degradation of PCBs at contaminated terrestrial sites.

• OSTI ID: 490979
• Report Number(s): CONF-950483-; ISBN 1-57477-008-X; TRN: IM9729%%230
• Resource Relation: Conference: 3. international in situ and on-site bioreclamation symposium, San Diego, CA (United States), 24-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Bioremediation of recalcitrant organics; Hinchee, R.E.; Anderson, D.B. [eds.] [Battelle Memorial Inst., Columbus, OH (United States)]; Hoeppel, R.E. [ed.] [Naval Facilities Engineering Services Center, Port Hueneme, CA (United States)]; PB: 378 p.; Bioremediation, Volume 3(7)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
BIODEGRADATION
POLYCHLORINATED BIPHENYLS
REMEDIAL ACTION
BACTERIA
GROWTH
FLAVENOIDS
COUMARIN
IN-SITU PROCESSING
METABOLISM
BIOLOGICAL EFFECTS