title: Toxic effects of boron on growth and antioxidant system parameters of maize (Zea mays L.) roots.
abstract: The aim of this study was to investigate the possible oxidative stress and the antioxidant response, which were caused on maize by boron (B). For this, 11- and 15-day-old maize seedlings were subjected to 2 or 4 mM B in the form of boric acid (H₃BO₃) for 2 and/or 6 days. At the end of the treatment period, root length, hydrogen peroxide (H₂O₂) content, malondialdehyde (MDA) content and the antioxidant enzymes superoxide dismutase (SOD), peroxidase (POX) and catalase (CAT) were measured. The results revealed that root length of plants, activity of antioxidative enzymes such as SOD, POX and CAT and also H₂O₂ contents and MDA levels were seriously affected by excess B. These results suggested that the oxidative stress occurred due to the toxic effect of B.
authors.affiliation: 1Department of Biology, Bingol University, Bingol, Turkey.
authors.forename: Nevzat
authors.initials: N
authors.lastname: Esim
authors.forename: Deniz
authors.initials: D
authors.lastname: Tiryaki
authors.forename: Omer
authors.initials: O
authors.lastname: Karadagoglu
authors.forename: Okkes
authors.initials: O
authors.lastname: Atici
mesh_terms: D000975:Antioxidants / Q000378:metabolism; D001888:Boric Acids / Q000633:toxicity; D001895:Boron / Q000633:toxicity*; D002374:Catalase / Q000378:metabolism; D006861:Hydrogen Peroxide / Q000378:metabolism; D008315:Malondialdehyde / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D009195:Peroxidase / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects* / Q000201:enzymology*; D036226:Seedlings / Q000187:drug effects / Q000201:enzymology; D013482:Superoxide Dismutase / Q000378:metabolism; D003313:Zea mays / Q000187:drug effects* / Q000201:enzymology*
chemical_list: D000975:Antioxidants; D001888:Boric Acids; D008315:Malondialdehyde; D006861:Hydrogen Peroxide; D002374:Catalase; D009195:Peroxidase; D013482:Superoxide Dismutase; D001895:Boron; C032688:boric acid