http://www.cnr.it/ontology/cnr/individuo/prodotto/ID283746
Effects of combined ozone and cadmium stresses on leaf traits in two poplar clones (Articolo in rivista)
- Type
- Label
- Effects of combined ozone and cadmium stresses on leaf traits in two poplar clones (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s11356-014-3481-8 (literal)
- Alternative label
Antonella Castagna, Daniela Di Baccio , Anna Maria Ranieri, Luca Sebastiani, Roberto Tognetti (2014)
Effects of combined ozone and cadmium stresses on leaf traits in two poplar clones
in Environmental Science and Pollution Research
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Antonella Castagna, Daniela Di Baccio , Anna Maria Ranieri, Luca Sebastiani, Roberto Tognetti (literal)
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dipartimento di Scienze Agrarie, Alimentari e Agro-Ambientali, Università di Pisa, Via del Borghetto 80, 56124 Pisa, Italy;
BioLabs, Istituto di Scienze della Vita, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy;
Istituto di Biologia Agroambientale e Forestale, Consiglio Nazionale delle Ricerche, Via Salaria km 29,300, 00015 Monterotondo Scalo, Italy;
Dipartimento di Bioscienze e Territorio, Università degli Studi del Molise, Contrada Fonte Lappone, 86090 Pesche, Italy (literal)
- Titolo
- Effects of combined ozone and cadmium stresses on leaf traits in two poplar clones (literal)
- Abstract
- Information on plant responses to combined stresses
such as ozone (O3) and cadmium (Cd) is scarce in tree
species. On the other hand, high O3 concentrations in the
atmosphere and heavy metal contaminations in water and soil
simultaneously affect forest ecosystems. Toxic metals may
exacerbate the consequences of air pollutants. In this research,
two poplar clones, differently sensitive to O3 (\"I-214\" O3-
tolerant and \"Eridano\" O3-sensitive), were grown for 5 weeks
in pots supplied with 0 and 150 mg Cd kg-1 soil and then
exposed to a 15-day O3 fumigation (60 nl l-1, 5 h a day) or
supplied with charcoal-filtered air under the same conditions
(referred to as control samples). The effects of the twostressors, alone or in combination, on Cd accumulation, photosynthetic
capacity, ethylene emission and oxidative state were
investigated in fully expanded leaves. Cadmium accumulation
in leaves caused a reduction, but not complete failure, of
photosynthesis in Eridano and I-214 poplar clones. The reduction
in assimilation rate was more important following O3
fumigation. Stomatal aperture after O3 treatment, instead, increased
in I-214 and decreased in Eridano. Overall, Cd treatment
was effective in decreasing ethylene emission, whereas
O3 fumigation increased it in both clones, although interacting
with the metal treatment. Again, O3 fumigation induced a
significant increase in ascorbate (ASA) + dehydroascorbate
(DHA) content, which was strongly oxidised by O3, thus
decreasing the redox state. On the other hand, Cd treatment
had a positive effect on ASA content and redox state in I-214,
but not in Eridano. Although Cd and O3 are known to share
some common toxicity pathways, the combined effects induced
distinct clone-specific responses, underlying the complexity
of plant reactions to multiple stresses. (literal)
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