Nerium oleander indirect leaf photosynthesis and light harvesting reductions after clipping injury or Spodoptera eridania herbivory: High sensitivity to injury

► Nerium oleander experiences post-injury indirect photosynthetic reductions. ► A negative exponential relationship: photosynthetic rate with leaf injury intensity. ► First study to show high indirect photosynthetic reductions at low chewing levels. ► Ci (intercellular [CO2]) increases with leaf injury intensity: non-stomatal limitation. ► Light-harvesting photosynthetic impairment prior to post-injury stomatal closure.