An investigation of the detoxification of active oxygen species in black-grass (Alopecurus myosuroides) plants susceptible and resistant to herbicides

摘要

Elevated glutathione S-transferase activity in the herbicide-resistant black-grass biotype Peldon has been previously reported in this lab. This investigation focuses on activities of other enzymes involved in the detoxification of active oxygen species (AOS). Study of four such enzymes revealed no difference in activities in susceptible and resistant biotypes, suggesting that increased herbicide tolerance in the Peldon biotype is not a result of greater general protection against AOS.