Italian ryegrass for the phytoremediation of solutions polluted with terbuthylazine

作者：Mimmo Tanja; Bartucca Maria Luce; Del Buono Daniele^*; Cesco Stefano

来源：Chemosphere, 2015, 119: 31-36.

DOI：10.1016/j.chemosphere.2014.04.114

• Terbuthylazine
• Italian ryegrass
• Herbicide residues
• Glutathione S-transferases
• Ascorbate peroxidases

The phytoextraction capacity of Italian ryegrass (Lolium multiflorum L) to remove terbuthylazine (TBA) from aqueous solution has been assessed using a plant-based biotest (RHIZOtest). Three TBA concentrations (0.5, 1.0 and 2.0 mg L-1) were chosen to evaluate the tolerance capacity of the ryegrass. Even though the treatments negatively affected plants, they were able to remove up to 30-40% of TBA. In addition, some enzymatic activities involved in the response to TBA-induced stress were determined. Glutathione S-transferase (GST) has been activated with a TBA-dose dependent trend; ascorbate peroxidase (APX) activities have been induced within the first hours after the treatments, followed by decreases or disappearance in plants exposed to two higher dosages. In conclusion, this case-study highlights that the combination of ryegrass and RHIZOtest resulted to be effective in the remediation of aqueous solutions polluted by TBA.

• 出版日期2015-1