The ABC transporter in plants responsible for detoxification of xenobiotics is found in:
Plants lack animal Na+/K+ gradient but generate proton motive force via plasma membrane P-type H+-ATPase and vacuolar V-type H+-ATPase and pyrophosphatase, driving uptake and compartmentalization of metabolites. Detoxification of xenobiotics, herbicides, and endogenous secondary metabolites employs ATP-binding cassette transporters localized predominantly in vacuolar membrane tonoplast and plasma membrane. Vacuolar ABCC members often called MRP-like transport glutathione S-conjugates, phytochelatin heavy metal complexes, and glucuronide conjugates into vacuole for sequestration, reducing cytos
Ref: Martinoia et al., Planta 2002, Vacuolar transporters; Kang et al., PNAS 2011, ABC in detox.
