http://www.cnr.it/ontology/cnr/individuo/prodotto/ID194047
Ultramorphological and physiological modifications induced by high zinc levels in Paulownia tomentosa (Articolo in rivista)
- Type
- Label
- Ultramorphological and physiological modifications induced by high zinc levels in Paulownia tomentosa (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.envexpbot.2012.02.008 (literal)
- Alternative label
Azzarello, Elisa; Pandolfi, Camilla; Giordano, Cristiana; Rossi, Marika; Mugnai, Sergio; Mancuso, Stefano; (2012)
Ultramorphological and physiological modifications induced by high zinc levels in Paulownia tomentosa
in Environmental and experimental botany
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Azzarello, Elisa; Pandolfi, Camilla; Giordano, Cristiana; Rossi, Marika; Mugnai, Sergio; Mancuso, Stefano; (literal)
- Pagina inizio
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- http://www.sciencedirect.com/science/article/pii/S0098847212000470 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
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- ISI Web of Science (WOS) (literal)
- Scopus (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Department of Plant, Soil and Environment, University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
Centro di Microscopie Elettroniche, ICCOM, CNR, via Madonna del Piano 10, Sesto Fiorentino, (Firenze - ITALY) (literal)
- Titolo
- Ultramorphological and physiological modifications induced by high zinc levels in Paulownia tomentosa (literal)
- Abstract
- The efficacy of Paulownia tomentosa in the absorption and accumulation of Zn from contaminated soils
has been recently described. However, no data are available regarding the modifications induced by high
levels of Zn on the anatomy and physiology of this tree species. P. tomentosa were grown hydroponically
at different Zn concentrations (100, 500, 1000, 2000, 3000, and 5000 ?M). The plant growth and leaf
gas exchange parameters (net CO2 assimilation and stomatal conductance) were significantly reduced
at high Zn concentrations. Electron and confocal microscopy analysis showed differences in the cellular
ultrastructure between control and treated (above 2000 ?M) plants, which exhibited an accumulation
of electron-dense materials. The major toxic effects of high Zn concentrations were related to damages
to the cell functionality, i.e., the chloroplast ultrastructure, which negatively affected the photosynthetic
performance, thus leading to a significant growth inhibition. P. tomentosa plants are able to limit Zninduced
damages by activating effective mechanisms of Zn sequestration and accumulation of excess Zn
in dedicated structures, such as petiole cell walls and root hairs, or by excluding part of the Zn in exudates
located on the petiole surface. (literal)
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