title: Biochemical changes in black oat (avena strigosa schreb) cultivated in vineyard soils contaminated with copper.
abstract: Soils used for the cultivation of grapes generally have a long history of copper (Cu) based fungicide applications. As a result, these soils can accumulate Cu at levels that are capable of causing toxicity in plants that co-inhabit the vineyards. The aim of the present study was to evaluate growth parameters and oxidative stress in black oat plants grown in vineyard soils contaminated with high levels of Cu. Soil samples were collected from the Serra Gaúcha and Campanha Gaúcha regions, which are the main wine producing regions in the state of Rio Grande do Sul, in southern Brazil. Experiments were conducted in a greenhouse in 2009, with soils containing Cu concentrations from 2.2 to 328.7 mg kg(-1). Evaluated parameters included plant root and shoot dry matter, Cu concentration in the plant's tissues, and enzymatic and non-enzymatic biochemical parameters related to oxidative stress in the shoots of plants harvested 15 and 40 days after emergence. The Cu absorbed by plants predominantly accumulated in the roots, with little to no translocation to the shoots. Even so, oat plants showed symptoms of toxicity when grown in soils containing high Cu concentrations. The enzymatic and non-enzymatic antioxidant systems of oat plants were unable to reverse the imposed oxidative stress conditions.
authors.affiliation: Instituto Federal de Educação, Ciência e Tecnologia Do Rio Grande Do Sul (IFRS), Campus Ibirubá, Rua Profª. Nelsi Ribas Fritsch, nº 1111, Bairro Esperança, CEP:98200-000-Ibirubá/RS, Brasil-Caixa postal 121, Brazil. Electronic address: eduardo.girotto@ibiruba.ifrs.edu.br.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Girotto
authors.affiliation: Departamento de Ciência Do Solo, Universidade Federal de Santa Maria (UFSM), CEP:97105-900, Santa Maria (RS), Brazil.
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Ceretta
authors.affiliation: Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria (UFSM), Santa Maria (RS), CEP:97105-900, Brazil.
authors.forename: Liana V
authors.initials: LV
authors.lastname: Rossato
authors.affiliation: Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria (UFSM), Santa Maria (RS), CEP:97105-900, Brazil.
authors.forename: Julia G
authors.initials: JG
authors.lastname: Farias
authors.affiliation: Departamento de Ciência Do Solo, Universidade Federal de Santa Maria (UFSM), CEP:97105-900, Santa Maria (RS), Brazil.
authors.forename: Gustavo
authors.initials: G
authors.lastname: Brunetto
authors.affiliation: Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina (IFSC), CEP:89900-000, Campus São Miguel Do Oeste (SC), Brazil.
authors.forename: Alcione
authors.initials: A
authors.lastname: Miotto
authors.affiliation: Departamento de Ciência Do Solo, Universidade Federal de Santa Maria (UFSM), CEP:97105-900, Santa Maria (RS), Brazil.
authors.forename: Tadeu L
authors.initials: TL
authors.lastname: Tiecher
authors.affiliation: Departamento de Ciência Do Solo, Universidade Federal de Santa Maria (UFSM), CEP:97105-900, Santa Maria (RS), Brazil.
authors.forename: Lessandro
authors.initials: L
authors.lastname: de Conti
authors.affiliation: Centro de Ciências Agrárias, Departamento de Engenharia Rural, Universidade Federal de Santa Catarina (UFSC), CEP:88034-000, Florianópolis (SC), Brazil.
authors.forename: Cledimar R
authors.initials: CR
authors.lastname: Lourenzi
authors.affiliation: Instituto Federal de Educação, Ciência e Tecnologia Do Rio Grande Do Sul (IFRS), Campus Ibirubá, Rua Profª. Nelsi Ribas Fritsch, nº 1111, Bairro Esperança, CEP:98200-000-Ibirubá/RS, Brasil-Caixa postal 121, Brazil.
authors.forename: Roberta
authors.initials: R
authors.lastname: Schmatz
authors.affiliation: Centro de Ciências Biológicas, Departamento de Microbiologia, Imunologia e Parasitologia Universidade Federal de Santa Catarina (UFSC), CEP:88040-970, Florianópolis (SC), Brazil.
authors.forename: Admir
authors.initials: A
authors.lastname: Giachini
authors.affiliation: Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria (UFSM), Santa Maria (RS), CEP:97105-900, Brazil.
authors.forename: Fernando T
authors.initials: FT
authors.lastname: Nicoloso
mesh_terms: D000975:Antioxidants / Q000378:metabolism; D018554:Avena / Q000737:chemistry / Q000187:drug effects* / Q000502:physiology; D001938:Brazil; D003300:Copper / Q000378:metabolism / Q000494:pharmacology*; D005659:Fungicides, Industrial / Q000378:metabolism / Q000494:pharmacology*; D009928:Organ Specificity; D018384:Oxidative Stress; D018517:Plant Roots / Q000737:chemistry / Q000187:drug effects / Q000502:physiology; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000378:metabolism / Q000494:pharmacology*; D027843:Vitis
chemical_list: D000975:Antioxidants; D005659:Fungicides, Industrial; D012987:Soil; D012989:Soil Pollutants; D003300:Copper
keywords: Bioavailability of metals; Environmental contamination; Oxidative stress