NaCl protects against Cd and Cu-induced toxicity in the halophyte Atriplex halimus
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INVESTIGACIONMetadata
Title
NaCl protects against Cd and Cu-induced toxicity in the halophyte Atriplex halimusDate
2016Publisher
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)Bibliographic citation
BANKAJI, Insaf; SLEIMI, Noomene; GÓMEZ CADENAS, Aurelio; PÉREZ CLEMENTE, Rosa María. NaCl protects against Cd and Cu-induced toxicity in the halophyte Atriplex halimus. Spanish Journal of Agricultural Research (2016), v. 14, n. 4, pp. 1-12Type
info:eu-repo/semantics/articlePublisher version
http://revistas.inia.es/index.php/sjar/article/view/10117/3142Subject
Abstract
The objective of the present work was to evaluate the extent of Cd- and Cu-induced oxidative stress and the antioxidant response
triggered in the halophyte species Atriplex halimus after metallic trace elements ... [+]
The objective of the present work was to evaluate the extent of Cd- and Cu-induced oxidative stress and the antioxidant response
triggered in the halophyte species Atriplex halimus after metallic trace elements exposure. Plants were treated for one month with
Cd2+ or Cu2+ (400 μM) in the absence or presence of 200 mM NaCl in the irrigation solution. The interaction between salinity and
heavy metal stress was analyzed in relation to plant growth, tissue ion contents (Na+, K+ and Mg2+), oxidative damage and antioxidative
metabolism. Data indicate that shoot and root weight significantly decreased as a consequence of Cd2+- or Cu2+-induced stress.
Metallic stress leads to unbalanced nutrient uptake by reducing the translocation of K+ and Mg2+ from the root to the shoot. The
levels of malondialdehyde increased in root tissue when Cd, and especially Cu, were added to the irrigation solution, indicating that
oxidative damage occurred. Results showed that NaCl gave a partial protection against Cd and Cu induced toxicity, although these
contaminants had distinct influence on plant physiology. It can be concluded that salinity drastically modified heavy metal absorption
and improved plant growth. Salinity also decreased oxidative damage, but differently in plants exposed to Cd or Cu stress. [-]
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Spanish Journal of Agricultural Research (2016), v. 14, n. 4Rights
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