title: Antioxidant response of three Tillandsia species transplanted to urban, agricultural, and industrial areas.
abstract: To evaluate the physiological response of Tillandsia capillaris Ruiz & Pav. f. capillaris, T. recurvata L., and T. tricholepis Baker to different air pollution sources, epiphyte samples were collected from a noncontaminated area in the province of Córdoba (Argentina) and transplanted to a control site as well as three areas categorized according to the presence of agricultural, urban, and industrial (metallurgical and metal-mechanical) emission sources. A foliar damage index (FDI) was calculated with the physiological parameters chlorophyll a, chlorophyll b, malondialdehyde (MDA), hydroperoxyconjugated dienes, sulfur (S) content, and dry weight-to-fresh weight ratio. In addition, electrical conductivity (E-cond), relative water content (RWC), dehydration kinetics (Kin-H(2)O), total phenols (T-phen), soluble proteins (S-prot), and activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase were determined. The parameters E-cond, FDI, SOD, RWC, and Kin-H(2)O can serve as suitable indicators of agricultural air pollution for T. tricholepis and T. capillaris, and CAT, Kin-H(2)O, and SOD can do the same for T. recurvata. In addition, MDA, T-phen, and S-prot proved to be appropriate indicators of urban pollution for T. recurvata. Moreover, FDI, E-cond, and SOD for T. recurvata and MDA for T. tricholepis, respectively, could be used to detect deleterious effects of industrial air pollution.
authors.affiliation: Instituto Multidisciplinario de Biología Vegetal, Consejo Nacional de Investigaciones Científicas y Técnicas, Cátedra de Química General, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Ciudad Universitaria (X5016 GCA), Avda. Vélez Sársfield 1611, Córdoba, Argentina. gbermudez@com.uncor.edu
authors.forename: Gonzalo M A
authors.initials: GM
authors.lastname: Bermudez
authors.forename: María Luisa
authors.initials: ML
authors.lastname: Pignata
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D000397:Air Pollution / Q000009:adverse effects* / Q000032:analysis; D000975:Antioxidants / Q000378:metabolism*; D001118:Argentina; D060387:Ascorbate Peroxidases / Q000378:metabolism; D002374:Catalase / Q000378:metabolism; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D004784:Environmental Monitoring / Q000379:methods*; D008315:Malondialdehyde / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry / Q000187:drug effects / Q000254:growth & development; D013455:Sulfur / Q000032:analysis; D013482:Superoxide Dismutase / Q000378:metabolism; D031232:Tillandsia / Q000737:chemistry* / Q000187:drug effects / Q000254:growth & development
chemical_list: D000393:Air Pollutants; D000975:Antioxidants; D002734:Chlorophyll; D008315:Malondialdehyde; C037184:chlorophyll b; D013455:Sulfur; D060387:Ascorbate Peroxidases; D002374:Catalase; D013482:Superoxide Dismutase; D000077194:Chlorophyll A