Ecology and management of an exotic weed Phalaris minor - Invasive Plants: Ecological and Agricultural Aspects - page 164

Figure 3. Effect of atrazine, isoxaflutole, and metsulfuron on shoot fresh weight of P. minor . Values
for 10 replicates are shown by different symbols.
tion? P450s are known to metabolize phenylurea herbicides. Plant Cyt P450
CYP76B1 purportedly is the major phenylurea-metabolizing P450 enzyme
and likely plays an important role in detoxification of PS II inhibitors [37].
Robineau et al. [37] reported that CYP76B1 is strongly induced by xenobi-
otics, e.g., phenylurea herbicides. We hypothesize that in resistant biotypes of
P. minor , CYP76B1 is induced and involved in isoproturon metabolism.