Differential ozone sensitivity interferes with cadmium stress in poplar clones (Articolo in rivista)

Type
Label
  • Differential ozone sensitivity interferes with cadmium stress in poplar clones (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • CASTAGNA A., DI BACCIO D., TOGNETTI R., RANIERI A., SEBASTIANI L. (2013)
    Differential ozone sensitivity interferes with cadmium stress in poplar clones
    in Biologia plantarum (Dordr., Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • CASTAGNA A., DI BACCIO D., TOGNETTI R., RANIERI A., SEBASTIANI L. (literal)
Pagina inizio
  • 313 (literal)
Pagina fine
  • 324 (literal)
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  • 57 (literal)
Rivista
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  • 12 (literal)
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  • 2 (literal)
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  • Dipartimento di Biologia delle Piante Agrarie, Universit√† di Pisa, Via del Borghetto 80, I-56124 Pisa, Italy; BioLabs, ISV, Scuola Superiore Sant'Anna, Piazza Martiri della Libert√† 33, I-56127 Pisa, Italy; Dipartimento di Bioscienze e Territorio, Universit√† degli Studi del Molise, I-86090 Pesche, Italy; Institute of Agro-Environment and Forest Biology, National Research Council of Italy, I-00015 Monterotondo Scalo, Italy (literal)
Titolo
  • Differential ozone sensitivity interferes with cadmium stress in poplar clones (literal)
Abstract
  • Information on plant responses to combined ozone and cadmium stresses are scarce and limited to herbaceous species. In this research, two poplar clones (I-214 and Eridano), differently sensitive to O3, were grown for 5 weeks in pots supplied with 0, 53.5, and 160.5 mg(Cd) kg-1(soil d.m.) and then exposed to 15-d O3 fumigation (0.06 mm3 dm-3, 5 h a day). The effects of the two stressors, alone or in combination, on Cd, Ca, Fe, and Zn accumulation in above- and below-ground organs, photosynthesis, leaf pigments, and accumulation of H2O2 and NO were investigated. Cadmium induced a reduction in stomatal conductance and a significant accumulation of H2O2 and NO in both clones and negatively affected the carotenoid content in I-214. Ozone, on the other hand, counteracted Cd accumulation in the above-ground organs and significantly increased the xanthophyll de-epoxidation state indicating photoinhibition in O3-treated plants. Surprisingly, O3 alone or in combination with Cd decreased H2O2 accumulation in I-214. The NO production was generally stimulated by Cd, whereas it decreased following O3 exposure in I-214. The overall data indicate that Cd and O3 induced clone specific responses. Moreover, when they were applied in combination, antagonistic rather than synergistic effects were observed. (literal)
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