title: Weeds ability to phytoremediate cadmium-contaminated soil.
abstract: An alternative method to other technologies to clean up the soil, air and water pollution by heavy metals is phytoremediation. Therefore, a pot culture experiment was conducted at the College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran, in 2014 to determine the potential absorption of cadmium by Portulaca oleracea (Common purslane), Solanum nigrum (Black nightshade), Abutilon theophrasti (Velvetleaf) and Taraxacum officinale (Dandelion). The type of experiment was completely randomized design with factorial arrangement and four replications. The soil in pot was treated with different rates of CdCl2.H2O (0 (control), 10, 20, 40, 60, and 80 mg Cd/kg soil) and the plants were sown. With increasing concentration levels, fresh weight and dry weight of shoots and roots of all plant species were reduced. The reduction severity was ranked according the following order, P. oleracea > A. theophrasti > S. nigrum > T. officinale. Bioconcentration factor (BCF), Translocation factor (TF) and Translocation efficiency (TE%) was ranked according the following order, T. officinale > S. nigrum > A. theophrasti > P. oleracea. The results of this study revealed that T. officinale and S. nigrum are effective species to phytoremediate Cd-contaminated soil.
authors.affiliation: a Department of Agronomy and Plant Breeding , College of Agriculture, University of Birjand , Birjand , Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Hammami
authors.affiliation: b Department of Agronomy and Plant Breeding , College of Agriculture, Ferdowsi University of Mashhad , Mashhad , Iran.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Parsa
authors.affiliation: b Department of Agronomy and Plant Breeding , College of Agriculture, Ferdowsi University of Mashhad , Mashhad , Iran.
authors.forename: Mohammad Hassan Rashed
authors.initials: MH
authors.lastname: Mohassel
authors.affiliation: b Department of Agronomy and Plant Breeding , College of Agriculture, Ferdowsi University of Mashhad , Mashhad , Iran.
authors.forename: Salman
authors.initials: S
authors.lastname: Rahimi
authors.forename: Sajad
authors.initials: S
authors.lastname: Mijani
mesh_terms: D001673:Biodegradation, Environmental; D002104:Cadmium / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D007492:Iran; D019660:Malvaceae / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism; D018520:Plant Shoots / Q000378:metabolism; D057685:Plant Weeds / Q000378:metabolism*; D031822:Portulaca / Q000378:metabolism; D012989:Soil Pollutants / Q000378:metabolism*; D032324:Solanum nigrum / Q000378:metabolism; D031205:Taraxacum / Q000378:metabolism
chemical_list: D012989:Soil Pollutants; D002104:Cadmium
keywords: cadmium; contaminated soil; heavy metals; phytoremediation; weeds