Mutant muddle: Some Arabidopsis eds5 mutant lines have a previously unnoticed second-site mutation in FAH1

Salicylic acid (SA) is produced by the enzyme isochorismate synthase (ICS) within the chloroplast and is subsequently exported to the cytosol by the multidrug and toxic compound extrusion transporter ENHANCED DISEASE SUSCEPTIBILITY5 (EDS5; [Nawrath et al., 2002][1]; [Serrano et al., 2013][2]). The