Pollution by toxic metals, accumulating into soils as result of human activities, is a worldwide major concern in industrial countries. Plants exhibit different degrees of tolerance to heavy metals, as a consequence of their ability to exclude or accumulate them in particular tissues, organs or sub-cellular compartments. Molecular information about cellular processes affected by heavy metals is still largely incomplete. As a fast-growing, highly tolerant perennial plant species, poplar has become a model for environmental stress response investigations. To study the short-term effects of cadmium accumulation in leaves, we analyzed photosystem II (PSII) quantum yield, hydrogen peroxide (H2O2) generation, hormone levels variation, as well as proteome profile alteration of 50μM CdSO4 vacuum-infiltrated poplar (Populus nigra L.) detached leaves. Cadmium management brought about an early and sustained production of hydrogen peroxide, an increase of abscisic acid, ethylene and gibberellins content, as well as a decrease in cytokinins and auxin levels, whereas photosynthetic electron transport was unaffected. Proteomic analysis revealed that twenty-one proteins were differentially induced in cadmium-treated leaves. Identification of fifteen polypeptides allowed to ascertain that most of them were involved in stress response while the remaining ones were involved in photosynthetic carbon metabolism and energy production.

Lomaglio, T., Rocco, M., Trupiano, D., De Zio, E., Grosso, A., Marra, M., et al. (2015). Effect of short-term cadmium stress on Populus nigra L. detached leaves. JOURNAL OF PLANT PHYSIOLOGY, 182, 40-48 [10.1016/j.jplph.2015.04.007].

Effect of short-term cadmium stress on Populus nigra L. detached leaves

Marra M.;
2015-01-01

Abstract

Pollution by toxic metals, accumulating into soils as result of human activities, is a worldwide major concern in industrial countries. Plants exhibit different degrees of tolerance to heavy metals, as a consequence of their ability to exclude or accumulate them in particular tissues, organs or sub-cellular compartments. Molecular information about cellular processes affected by heavy metals is still largely incomplete. As a fast-growing, highly tolerant perennial plant species, poplar has become a model for environmental stress response investigations. To study the short-term effects of cadmium accumulation in leaves, we analyzed photosystem II (PSII) quantum yield, hydrogen peroxide (H2O2) generation, hormone levels variation, as well as proteome profile alteration of 50μM CdSO4 vacuum-infiltrated poplar (Populus nigra L.) detached leaves. Cadmium management brought about an early and sustained production of hydrogen peroxide, an increase of abscisic acid, ethylene and gibberellins content, as well as a decrease in cytokinins and auxin levels, whereas photosynthetic electron transport was unaffected. Proteomic analysis revealed that twenty-one proteins were differentially induced in cadmium-treated leaves. Identification of fifteen polypeptides allowed to ascertain that most of them were involved in stress response while the remaining ones were involved in photosynthetic carbon metabolism and energy production.
2015
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore BIO/04 - FISIOLOGIA VEGETALE
English
Con Impact Factor ISI
Cadmium stress
Hormones
Hydrogen peroxide
Poplar
Proteomics
Lomaglio, T., Rocco, M., Trupiano, D., De Zio, E., Grosso, A., Marra, M., et al. (2015). Effect of short-term cadmium stress on Populus nigra L. detached leaves. JOURNAL OF PLANT PHYSIOLOGY, 182, 40-48 [10.1016/j.jplph.2015.04.007].
Lomaglio, T; Rocco, M; Trupiano, D; De Zio, E; Grosso, A; Marra, M; Delfine, S; Chiatante, D; Morabito, D; Scippa, Gs
Articolo su rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/312997
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