Biodegradation of phenol, 2,4-DCP, 2,4-D, and 2,4,5-T in field-collected rhizosphere and nonrhizosphere soils
- Univ. of Cincinnati, OH (United States)
This study investigated xenobiotic biodegradation in rhizosphere soil collected from field-grown plants, grouped for analysis as monocots or dicots. Microbial activity was highest in monocot rhizosphere soils, No differences were seen between these soils in the mineralization of phenol or 2,4-dichlorophenol (2,4-DCP), but there were differences in 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) mineralization. The rate constants for 2,4-D or 2,4,5-T mineralization in nonrhizosphere soil. Thus, soils that had a prior association with a plant showed significantly increased rates o mineralization for the more recalcitrant compounds tested. In addition, this enhanced mineralization in the rhizosphere appeared to be dependent on the type of plant involved. 20 refs., 4 figs., 2 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 369897
- Journal Information:
- Journal of Environmental Quality, Journal Name: Journal of Environmental Quality Journal Issue: 4 Vol. 24; ISSN JEVQAA; ISSN 0047-2425
- Country of Publication:
- United States
- Language:
- English
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