Alterations of Amino Acid Concentrations and Photosynthetic Indices in Light Irradiated Arabidopsis thaliana during Phytoextraction

Hyperaccumulation of heavy metals is substantial in some hyperaccumulators; however, few studies have been conducted to reveal the effect light irradiation on variations representative amino acids and photosynthetic indices, which can represent antioxidant capacity plants during phytoremediation. The physiochemical responses Arabidopsis thaliana Cd stress were compared six treatments. results experiment showed that adaptation A. was enhanced all treatments, except for monochromatic blue-light irradiation. concentrations glutamic acid glutamine decreased significantly pure blue with other decrease these two might be induced by an intensive biosynthesis defensive factors, as manifested declined indices. Concentrations aspartic asparagine involved ammonification, absorption, transportation nitrogen vascular increased red combined treatments control, corresponding improved species. concentration proline, environmental stresses including metal toxicity excessive energy, generally increasing ratio light. This study proposes key roles indices light-motivated pollution thaliana.