“…In comparison to local tissues, the distal tissues of SAR-induced plants have been shown to accumulate a broad range of SA ranging from as low as 10 ng/ g FW to ∼2.6 μg/g FW ( Table 1 ; Rasmussen et al, 1991 ; Yalpani et al, 1991 ; Meuwly and Métraux, 1993 ; Molders et al, 1994 ; Vernooij et al, 1994 ; Lawton et al, 1995 ; Shulaev et al, 1995 ; Cameron et al, 1999 ; Kiefer and Slusarenko, 2003 ; Mishina and Zeier, 2006 ; Attaran et al, 2009 ; Liu et al, 2010 , 2011 ; Xia et al, 2010 ; Chanda et al, 2011 ; Gao et al, 2014 ). The inability to accumulate SA in distal tissues has also been suggested to contribute to impaired SAR in ald1 ( agd2 -Like Defense response protein 1) and fmo1 (Flavin Monooxygenase 1) mutants, both of which accumulate normal SA in the local tissue ( Song et al, 2004a , b ; Mishina and Zeier, 2006 ).…”