title: Evaluation of three ornamental plants for phytoremediation of Pb-contamined soil.
abstract: Characteristics of accumulation and tolerance of lead (Pb) in Quamolit pennata, Antirrhinum majus L. and Celosia cristata pyramidalis were investigated to identify Pb-accumulating plants. In this study, pot culture experiment was conducted to assess whether these plants are Pb-hyperaccumulators or accumulators. The results indicated that the Pb enrichment factor (concentration in plant/soil) and Pb translocation factor (concentration in shoot/root) of these plants were principally <1 in pot culture and concentration gradient experiments. However, the Pb concentration in Celosia cristata pyramidalis shoots was higher than 1000 mg kg(-1), the threshold concentration for a Pb-hyperaccumulator. Shoot biomass of Celosia cristata pyramidalis had no significantly (p < 0.05) variation compared to the control. Based on these results, only Celosia cristata pyramidalis could be identified as a Pb-accumulator.
authors.affiliation: School of Environmental and biological Engineering, Liaoning Shihua University, Fushun, China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Cui
authors.forename: Tingan
authors.initials: T
authors.lastname: Zhang
authors.forename: Shanlin
authors.initials: S
authors.lastname: Zhao
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Qixing
authors.initials: Q
authors.lastname: Zhou
authors.forename: Qianru
authors.initials: Q
authors.lastname: Zhang
authors.forename: Qing
authors.initials: Q
authors.lastname: Han
mesh_terms: D032161:Antirrhinum / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D001692:Biological Transport; D018533:Biomass; D034762:Celosia / Q000254:growth & development / Q000378:metabolism*; D007854:Lead / Q000032:analysis / Q000378:metabolism*; D019684:Magnoliopsida / Q000254:growth & development / Q000378:metabolism*; D035261:Plant Components, Aerial / Q000254:growth & development / Q000378:metabolism; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D007854:Lead