title: Effect of heavy metals on inhibition of root elongation in 23 cultivars of flax (Linum usitatissimum L.).
abstract: The effect of toxic metals on seed germination was studied in 23 cultivars of flax (Linum usitatissimum L.). Toxicity of cadmium, cobalt, copper, zinc, nickel, lead, chromium, and arsenic at five different concentrations (0.01-1 mM) was tested by standard ecotoxicity test. Root length was measured after 72 h of incubation. Elongation inhibition, EC50 value, slope, and NOEC values were calculated. Results were evaluated by principal component analysis, a multidimensional statistical method. The results showed that heavy-metal toxicity decreased in the following order: As3+>or=As5+>Cu2+>Cd2+>Co2+>Cr6+>Ni2+>Pb2+>Cr3+>Zn2+.
authors.affiliation: Laboratory of Plant Biotechnologies, Joint Laboratory of the Institute of Experimental Botany AS CR, v.v.i., and Crop Research Institute, v.v.i., Rozvojová 263, 165 02, Prague 6, Czech Republic.
authors.forename: Petr
authors.initials: P
authors.lastname: Soudek
authors.forename: Adéla
authors.initials: A
authors.lastname: Katrusáková
authors.forename: Lukás
authors.initials: L
authors.lastname: Sedlácek
authors.forename: Sárka
authors.initials: S
authors.lastname: Petrová
authors.forename: Vladimír
authors.initials: V
authors.lastname: Kocí
authors.forename: Petr
authors.initials: P
authors.lastname: Marsík
authors.forename: Miroslav
authors.initials: M
authors.lastname: Griga
authors.forename: Tomás
authors.initials: T
authors.lastname: Vanek
mesh_terms: D001151:Arsenic / Q000633:toxicity; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000633:toxicity; D002857:Chromium / Q000633:toxicity; D003035:Cobalt / Q000633:toxicity; D003300:Copper / Q000633:toxicity; D004305:Dose-Response Relationship, Drug; D019597:Flax / Q000145:classification / Q000187:drug effects* / Q000254:growth & development; D018525:Germination / Q000187:drug effects; D006131:Growth Inhibitors / Q000633:toxicity*; D007854:Lead / Q000633:toxicity; D019216:Metals, Heavy / Q000633:toxicity*; D009532:Nickel / Q000633:toxicity; D018517:Plant Roots / Q000187:drug effects* / Q000254:growth & development; D012989:Soil Pollutants / Q000633:toxicity*; D018675:Toxicity Tests; D015032:Zinc / Q000633:toxicity
chemical_list: D006131:Growth Inhibitors; D019216:Metals, Heavy; D012989:Soil Pollutants; D002104:Cadmium; D002857:Chromium; D007854:Lead; D003035:Cobalt; D003300:Copper; D009532:Nickel; D015032:Zinc; D001151:Arsenic