title: Impact of cadmium stress on two maize hybrids.
abstract: Some physiological parameters and composition of the root cell walls of two maize hybrids (monocots), the sensitive Novania and the tolerant Almansa were studied after treatment with cadmium cations. After 10 days of Cd2+treatment (1 × 10-5M and 5 × 10-5M), plant growth inhibition, in the sensitive hybrid in particular, as well as a certain alteration in root structure and pigment content were observed. The Cd2+accumulation was ten times higher in the roots than in the shoots. Chemical analyses and atomic absorption spectroscopy proved that Cd2+modified the composition of the root cell walls by a significant increase in the content of alkali-soluble polysaccharide fractions, particularly in the tolerant hybrid. An increase in the content of phenolic compounds, mainly in the tolerant hybrid, and a decrease in protein content were observed in the presence of Cd2+in the alkali fractions. The results indicate that the changes in the cell wall polysaccharide fractions and their proportion to lignin and cellulose are obviously involved in the tolerance and/or defence against Cd2+of the maize hybrids studied.
authors.affiliation: Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia.
authors.forename: Zuzana
authors.initials: Z
authors.lastname: Vatehová
authors.affiliation: Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia.
authors.forename: Anna
authors.initials: A
authors.lastname: Malovíková
authors.affiliation: Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia.
authors.forename: Karin
authors.initials: K
authors.lastname: Kollárová
authors.affiliation: Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia.
authors.forename: Danica
authors.initials: D
authors.lastname: Kučerová
authors.affiliation: Institute of Chemistry, Centre of Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38, Bratislava, Slovakia. Electronic address: chemlisk@savba.sk.
authors.forename: Desana
authors.initials: D
authors.lastname: Lišková
mesh_terms: D002104:Cadmium / Q000493:pharmacokinetics* / Q000633:toxicity*; D002473:Cell Wall / Q000737:chemistry / Q000187:drug effects / Q000378:metabolism; D002482:Cellulose / Q000378:metabolism; D002678:Chimera; D003593:Cytoplasm / Q000187:drug effects / Q000378:metabolism; D008031:Lignin / Q000378:metabolism; D009005:Monosaccharides / Q000032:analysis; D018517:Plant Roots / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D011134:Polysaccharides / Q000737:chemistry / Q000378:metabolism; D013312:Stress, Physiological / Q000187:drug effects / Q000235:genetics; D003313:Zea mays / Q000187:drug effects* / Q000235:genetics* / Q000378:metabolism
chemical_list: D009005:Monosaccharides; D011134:Polysaccharides; D002104:Cadmium; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin
keywords: Cadmium (Cd(2+)); Hybrids; Maize (Zea mays L.); Polysaccharides; Root cell wall; Tolerance