title: A preliminary study on the phytoremediation of antibiotic contaminated sediment.
abstract: In Vietnam's coastal wetlands, fluoroquinolones, a widely used class of antibiotics in shrimp farming, are frequently detected in sediments of former shrimp farms. This phenomenon could lead to negative impacts on the aquatic ecosystem, since the antibiotic residues could induce changes in the microorganism communities of the water body. The potential of native wetland plants (Acrostichum aureum L. and Rhizophora apiculata Blume Fl. Javae) for phytoremediation of fluoroquinolones (ciprofloxacin and norfloxacin) was investigated. The half-life for each antibiotic was estimated at approximately 10 days in the planted sediment. With respect to the accumulation of ciprofloxacin and norfloxacin in plants, these antibiotics were found mainly in roots. Antibiotic translocation from root to stem and leaves occurred at a low rate. The results showed that A. aureum and R. apiculata can be valuable for the phytoremediation of antibiotic-contaminated sediments. Additionally, the initialfindings of the presence of resistant bacteria indicated that bacteria could play a role in facilitating the phytodegradation.
authors.affiliation: Hochiminh City University for Natural Resources and Environment, Hochiminh City, Vietnam. hengthuy@yahoo.de
authors.forename: Thuy Thi Thanh
authors.initials: TT
authors.lastname: Hoang
authors.forename: Loan Thi Cam
authors.initials: LT
authors.lastname: Tu
authors.forename: Phi
authors.initials: P
authors.lastname: Le Nga
authors.forename: Quoc Phu
authors.initials: QP
authors.lastname: Dao
mesh_terms: D000192:Actinomycetales / Q000235:genetics / Q000302:isolation & purification*; D000900:Anti-Bacterial Agents / Q000032:analysis / Q000378:metabolism*; D001673:Biodegradation, Environmental; D001692:Biological Transport; D042063:Caulobacteraceae / Q000235:genetics / Q000302:isolation & purification*; D002939:Ciprofloxacin / Q000032:analysis / Q000378:metabolism; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D004351:Drug Resistance; D019015:Geologic Sediments / Q000737:chemistry*; D006207:Half-Life; D008826:Microbial Sensitivity Tests; D009643:Norfloxacin / Q000032:analysis / Q000378:metabolism; D018515:Plant Leaves / Q000254:growth & development / Q000378:metabolism; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism; D018547:Plant Stems / Q000254:growth & development / Q000378:metabolism; D029625:Pteridaceae / Q000254:growth & development / Q000378:metabolism*; D043982:Rhizophoraceae / Q000254:growth & development / Q000378:metabolism*; D014744:Vietnam; D014867:Water / Q000737:chemistry; D053833:Wetlands
chemical_list: D000900:Anti-Bacterial Agents; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D014867:Water; D002939:Ciprofloxacin; D009643:Norfloxacin