title: Interactions of arsenic and phenanthrene on their uptake and antioxidative response in Pteris vittata L.
abstract: The interactions of arsenic and phenanthrene on plant uptake and antioxidative response of Pteris vitatta L. were studied hydroponically. The combination of arsenic and phenanthrene decreased arsenic contents in fronds by 30-51%, whereas increased arsenic concentrations 1.2-1.6 times in roots, demonstrating the suppression of arsenic translocation compared to the corresponding treatment without phenanthrene. Under the co-exposure, As(III) concentrations in fronds deceased by 12-73%, and at higher arsenic exposure level (≥ 10 mg/L), As(V) in fronds and As(III) in roots increased compared to the single arsenic treatment. Arsenic exposure elevated phenanthrene concentrations in root by 39-164%. The co-existence of arsenic and phenanthrene had little impact on plant arsenic accumulation, although synergistic effect on antioxidants was observed, suggesting the special physiological process of P. vitatta in the co-exposure and application potential of P. vitatta in phytoremediation of arsenic and PAHs co-contamination.
authors.affiliation: Beijing Key Lab of Industrial Land Contamination and Remediation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Sun
authors.forename: Xiulan
authors.initials: X
authors.lastname: Yan
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Liao
authors.forename: Yi
authors.initials: Y
authors.lastname: Wen
authors.forename: Zhongyi
authors.initials: Z
authors.lastname: Chong
authors.forename: Tao
authors.initials: T
authors.lastname: Liang
mesh_terms: D000975:Antioxidants / Q000378:metabolism*; D001151:Arsenic / Q000737:chemistry / Q000378:metabolism*; D001673:Biodegradation, Environmental; D001692:Biological Transport; D052918:Environmental Restoration and Remediation / Q000295:instrumentation* / Q000379:methods; D007700:Kinetics; D010616:Phenanthrenes / Q000737:chemistry / Q000378:metabolism*; D018517:Plant Roots / Q000737:chemistry / Q000378:metabolism; D032495:Pteris / Q000737:chemistry / Q000378:metabolism*; D012989:Soil Pollutants / Q000737:chemistry / Q000378:metabolism*
chemical_list: D000975:Antioxidants; D010616:Phenanthrenes; D012989:Soil Pollutants; C031181:phenanthrene; D001151:Arsenic