Ozone foliar symptoms in woody plant species assessed with ultrastructural and fluorescence analysis (Articolo in rivista)

Type
Label
  • Ozone foliar symptoms in woody plant species assessed with ultrastructural and fluorescence analysis (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Filippo Bussotti; Giovanni Agati; Rosanna Desotgiu; Paolo Matteini; Corrado Tani (2005)
    Ozone foliar symptoms in woody plant species assessed with ultrastructural and fluorescence analysis
    in New phytologist (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Filippo Bussotti; Giovanni Agati; Rosanna Desotgiu; Paolo Matteini; Corrado Tani (literal)
Pagina inizio
  • 941 (literal)
Pagina fine
  • 955 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 166 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Department of Plant Biology, University of Florence. Piazzale delle Cascine 28, 50144 Firenze, Italy; Istituto di Fisica Applicata 'Nello Carrara' - IFAC, Consiglio Nazionale delle Ricerche, via Madonna del Piano, 50019 Sesto Fiorentino, Firenze, Italy (literal)
Titolo
  • Ozone foliar symptoms in woody plant species assessed with ultrastructural and fluorescence analysis (literal)
Abstract
  • o This paper compares the responses to ozone in five woody species: Fagus sylvatica (FS), Acer pseudoplatanus (AP), Fraxinus excelsior (FE), Viburnum lantana (VL) and Ailanthus altissima (AA). The hypothesis being tested was that the strategies that plants adopt to resist oxidative pressure are species-specific. o The study was carried out on field grown plants in an area in Northern Italy characterized by elevated levels of ozone pollution. The observations were made both at ultrastructural (using light and electronic microscopy) and physiological (using chlorophyll a transient fluorescence and microspectral fluorometry) level. o Common responses were: the hypersensitive response (i.e. the death of palisade mesophyll cells) and the formation of callose layers separating injured from healthy cells. FS and AP were capable of thickening the palisade mesophyll cell walls. This thickening process involved changes in cell wall chemical structure, evidenced by the accumulation of yellow autofluorescence compounds. Species-specific behaviours were observed with the fluorescence analysis, with special reference to the photochemical de-excitation constant (Kp). This value increased in FE and AP, and decreased in AA. o The observed responses are interpreted as adaptative strategies against the ozone stress. The increase of Kp indicates that the reaction centres were working as more effective quenchers. (literal)
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