In plants, L-ascorbic acid (Shigeoka et al., 2002) metabolism is
correlated with oxidative stress defense, while AsA accumulation in
plant tissues and organs is altered by physiological phenomena
such as senescence, cell expansion development and, various biotic
and abiotic stimulations (Davey et al., 2006, 2000). Most of the
biological roles of AsA derive from its great capacity to act as a
reducing agent. Indeed, the primary function of AsA is to detoxify
hydrogen peroxide H2O2 produced by metabolism during photo-
synthesis and especially in stress conditions (Smirnoff, 2011).