title: Phaseolus vulgaris L. Seedlings Exposed to Prometryn Herbicide Contaminated Soil Trigger an Oxidative Stress Response.
abstract: Herbicides from the family of S-triazines, such as prometryn, have been widely used in crop production and can constitute an environmental pollution in both water and soil. As a valuable crop, the common bean (Phaseolus vulgaris L.) is grown all over the world and could be exposed to such herbicides. We wanted to investigate the possible stress sustained by the common bean growing in prometryn-polluted soil. Two situations were observed: when soil was treated with ≥100 μM prometryn, some, but not all, measured growth parameters were affected in a dose-dependent manner. Growth was reduced, and photosynthetic pigments and photosynthetic products were less accumulated when soil was treated with ≥100 μM prometryn. Reactive oxygen species (ROS) produced had a deleterious effect, as seen by the accumulation of oxidized lipid in the form of malondialdehyde (MDA). Higher prometryn (500 μM) concentrations had a disastrous effect, reducing antioxidant activities. At a low (10 μM) concentration, prometryn increased antioxidant enzymatic activities without affecting plant growth or MDA production. Gene expression of proline metabolism genes and proline accumulation confirm that bean plants respond to a stress according to the prometryn concentration. Physiological responses such as antioxidative enzymes APX, CAT, and the enzyme implicated in the metabolization of xenobiotics, GST, were increased at 10 and 100 μM, which indicated a prevention of deleterious effects of prometryn, suggesting that bean is a suitable material both for herbicide pollution sensing and as a crop on a low level of herbicide pollution.
authors.affiliation: Biology Laboratory and Physiology of Organisms (LBPO), Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , B.P. 32, El Alia, 16111 Bab Ezzouar, Algiers, Algeria.
authors.forename: Kerima
authors.initials: K
authors.lastname: Boulahia
authors.affiliation: Institute of Ecology and Environmental Sciences of Paris (iEES), UMR 7618, UPMC CNRS, University Pierre et Marie Curie , Paris, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Carol
authors.affiliation: Institute of Ecology and Environmental Sciences of Paris (iEES), UMR 7618, UPMC CNRS, University Pierre et Marie Curie , Paris, France.
authors.forename: Séverine
authors.initials: S
authors.lastname: Planchais
authors.affiliation: Biology Laboratory and Physiology of Organisms (LBPO), Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , B.P. 32, El Alia, 16111 Bab Ezzouar, Algiers, Algeria.
authors.forename: Ouzna
authors.initials: O
authors.lastname: Abrous-Belbachir
mesh_terms: D006540:Herbicides / Q000494:pharmacology*; D018384:Oxidative Stress; D027805:Phaseolus / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D011400:Prometryne / Q000494:pharmacology*; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D006540:Herbicides; D012989:Soil Pollutants; D011400:Prometryne
keywords: antioxidant systems; bean (Phaseolus vulgaris L); gene expression; proline; prometryn herbicide