title: [Effects of exogenous iron on lead accumulation in Typha latifolia from a lead-contaminated soil].
abstract: A pot experiment was conducted to study the effects of adding 100 and 500 mg x kg(-1) of exogenous iron (Fe) on the lead (Pb) accumulation in Typha latifolia growing on a soil with 0, 100, 500 and 1000 mg x kg(-1) of Pb, respectively. In treatment 500 mg Fe x kg(-1), the Pb concen tration in T. latifolia shoots and roots was higher, compared with that in treatment 100 mg Fe x kg(-1). When the soil Pb concentration was 1000 mg x kg(-1), the Pb concentration in T. lati folia shoots and roots in treatment 500 mg Fe x kg(-1) increased by 33.7% and 50.5%, respectively, compared with that in treatment 100 mg Fe x kg(-1). The exchangeable Pb concentration in rhizosphere soil was 77.0% -114.6% higher in treatment 500 mg Fe x kg(-1) than in treatment 100 mg Fe x kg(-1). When the soil Pb concentration was 0, 100 and 1000 mg x kg(-1), the root dry mass in treatment 500 mg Fe x kg(-1) had a significant decrease, compared with that in treatment 100 mg Fe x kg(-1). It was suggested that adding appropriate amount of Fe to Pb-contaminated wetland soil could increase the availability of soil Pb and improve the Pb accumulation in plants.
authors.affiliation: Department of Resource Environment and Tourism Management, Hengyang Normal University, Hengyang 421008, Hunan, China. shunqingzhong@163.com
authors.forename: Shun-Qing
authors.initials: SQ
authors.lastname: Zhong
authors.forename: Jian-Ming
authors.initials: JM
authors.lastname: Xu
mesh_terms: D001673:Biodegradation, Environmental; D007501:Iron / Q000494:pharmacology*; D007854:Lead / Q000032:analysis / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000378:metabolism*; D032401:Typhaceae / Q000378:metabolism*; D053833:Wetlands
chemical_list: D012987:Soil; D012989:Soil Pollutants; D007854:Lead; D007501:Iron