The tolerance of plants to herbivory reflects the degree to which a plant c
an regrow and reproduce after damage from herbivores. Autoecological factor
s, as well as the influence of competitors and mutualists, affect the level
of plant tolerance. Recent work indicates that there is a heritable basis
for tolerance and that it can evolve in natural plant populations. Although
tolerance is probably not a strict alternative to plant resistance, there
could be inter- and intraspecific tradeoffs between these defensive strateg
ies.