“…Induction of increased Si uptake and accumulation following herbivory damage has been observed in several grass species, exposed to vertebrate [1,29] and invertebrate [29,30] herbivores, as well as following artificial leaf clipping [22,23,29,31]. Nonetheless, this induction was not observed in some laboratory experiments that were conducted on other grass species exposed to locusts [32] and artificial clipping [29,31,[33][34][35], possibly because exposure periods were too short to initiate a Si uptake response or to allow Si accumulation [29]. In their literature survey, Quigley and Anderson [33] show that although increased Si uptake and deposition is commonly observed in plants that are exposed to real herbivores, exceptions are not rare.…”