title: Arbuscular mycorrhiza partially protect chicory roots against oxidative stress induced by two fungicides, fenpropimorph and fenhexamid.
abstract: The present work examined the oxidative stress induced by different concentrations (0.02 and 0.2 mg l-1) of two sterol biosynthesis inhibitor fungicides (fenpropimorph and fenhexamid) in non-target chicory root colonised or not by Glomus intraradices in a monoxenic system. The fungicides were found to cause oxidative damage by increasing lipid peroxidation measured by malondialdehyde production in non-colonised roots. Detoxification of the H(2)O(2) product was measured at 0.2 mg l-1 of fenpropimorph by an increase in peroxidase activities suggesting an antioxidant capacity in these roots. Moreover, this study pointed out the ability of arbuscular mycorrhiza to alleviate partially the oxidative stress in chicory roots, probably by lowering reactive oxygen species concentrations, resulting from increases in antioxidant defences. Our results suggest that the enhanced fungicide tolerance in the AM symbiosis could be related to less cell membrane damage.
authors.affiliation: Univ Lille Nord de France, Lille, France.
authors.forename: Estelle
authors.initials: E
authors.lastname: Campagnac
authors.forename: Anissa
authors.initials: A
authors.lastname: Lounès-Hadj Sahraoui
authors.forename: Djouher
authors.initials: D
authors.lastname: Debiane
authors.forename: Joël
authors.initials: J
authors.lastname: Fontaine
authors.forename: Frédéric
authors.initials: F
authors.lastname: Laruelle
authors.forename: Guillaume
authors.initials: G
authors.lastname: Garçon
authors.forename: Anthony
authors.initials: A
authors.lastname: Verdin
authors.forename: Roger
authors.initials: R
authors.lastname: Durand
authors.forename: Pirouz
authors.initials: P
authors.lastname: Shirali
authors.forename: Anne
authors.initials: A
authors.lastname: Grandmougin-Ferjani
mesh_terms: D000577:Amides / Q000633:toxicity*; D018651:Cichorium intybus / Q000187:drug effects*; D005659:Fungicides, Industrial / Q000633:toxicity*; D055137:Glomeromycota / Q000254:growth & development*; D006861:Hydrogen Peroxide / Q000378:metabolism; D009025:Morpholines / Q000633:toxicity*; D018384:Oxidative Stress; D018517:Plant Roots / Q000187:drug effects*
chemical_list: D000577:Amides; D005659:Fungicides, Industrial; D009025:Morpholines; C050435:fenpropimorph; D006861:Hydrogen Peroxide; C451426:N-(2,3-dichloro-4-hydroxyphenyl)-1-methylcyclohexanecarboxamide