Plant immune response
Defense priming is defined as the conditioning of plants to respond
physiologically to external stresses such as pathogen infection
(Mauch-Mani & Mauch
2005; Conrath et al. 2006) . Systemic acquired resistance (SAR)
is a phenomenon in which pathogenesis on a part of a plant activates
defense in the whole plant via a suite of chemical signals
(Malamyet al. 1990; Mauch-Mani & Mauch 2005; Conrath et al.2006; Dempsey & Klessig 2012). Thus, priming allows plants to respond
rapidly to future attack and SAR activates plant defense against attack
on plant tissues that have not yet been affected. Defense priming has
been found to be a widespread ecological phenomenon
(Karban 2011); however,
quantitative comparisons of different plant species, including invasive
species, has not yet been conducted.