 |
Paraquat
accepts electrons from the photosystem I pathway,
forming free radicals which rapidly destroy cell
membranes. The
loss of cell membranes allows cytoplasm to leak into
intercellular spaces (water-soaked lesions), leading to
rapid wilting and desiccation. |
|
Paraquat is
most effective when the plant is undergoing active
photosynthesis. Injury
symptoms may be delayed under cloudy conditions. |
|
