Both the concentration and redox state of glutathione and ascorbate influence the sensitivity of arabidopsis to cadmium | Zendy

Marijke Jozefczak | Zendy; Sacha Bohler | Zendy; Henk Schat | Zendy; Nele Horemans | Zendy; Yves Guisez | Zendy; Tony Remans | Zendy; Jaco Vangronsveld | Zendy; Ann Cuypers | Zendy

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Both the concentration and redox state of glutathione and ascorbate influence the sensitivity of arabidopsis to cadmium

Author(s) -

Marijke Jozefczak,

Sacha Bohler,

Henk Schat,

Nele Horemans,

Yves Guisez,

Tony Remans,

Jaco Vangronsveld,

Ann Cuypers

Publication year - 2015

Publication title -

annals of botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.567

H-Index - 176

eISSN - 1095-8290

pISSN - 0305-7364

DOI - 10.1093/aob/mcv075

Subject(s) - glutathione , biology , oxidative stress , cadmium , reactive oxygen species , biochemistry , arabidopsis , superoxide dismutase , arabidopsis thaliana , antioxidant , mutant , catalase , redox , enzyme , chemistry , gene , organic chemistry

Cadmium (Cd) is a non-essential trace element that elicits oxidative stress. Plants respond to Cd toxicity via increasing their Cd-chelating and antioxidative capacities. They predominantly chelate Cd via glutathione (GSH) and phytochelatins (PCs), while antioxidative defence is mainly based on the use and recycling of both GSH and ascorbate (AsA), complemented by superoxide dismutase (SOD) and catalase (CAT). In addition, both metabolites act as a substrate for the regeneration of other essential antioxidants, which neutralize and regulate reactive oxygen species (ROS). Together, these functions influence the concentration and cellular redox state of GSH and AsA. In this study, these two parameters were examined in plants of Arabidopsis thaliana exposed to sub-lethal Cd concentrations.

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