2.1.1.274 M156H site-directed mutagenesis, the mutation of Met156 to His results in a switch from a preference for salicylic acid (SA) over benzoic acid (BA) in wild-type PtSABATH4 to a preference for BA over SA in the M156H mutant 757984 2.1.1.274 M314V site-directed mutagenesis, the mutation results in decreased enzymatic activities towards both the substrates salicylic acid (SA) over benzoic acid (BA), but not in a substrate switch 757984 2.1.1.274 additional information an AtBSMT1 T-DNA knockout (AtBSMT1 KO, SALK_140496) is transformed by AtBSMT1 (Ask6) and PbBSMT (PsK5) and their susceptibility to clubroot is assessed. The infection rate is similar in the AtBSMT1 KO and AsK6 and comparable to that in wild-type. In contrast, PsK5 plants produce significantly larger galls than produced by the AtBSMT1 knockout -, 757709 2.1.1.274 additional information silencing of gene NbSAMT, quantitative real-time PCR defense-related genes expression analysis 736841 2.1.1.274 Y147S reduced methylation of benzoic acid and 3-hydroxybenzoic acid but slightly increased activity towards jasmonic acid 723402 2.1.1.274 Y147S/M150H significant increase in the ability to turn over jasmonic acid and vanillic acid 723402 2.1.1.274 Y147S/M150H/F347Y slightly increased activity towards short-chain carboxylic acids and jasmonic acid 723402 2.1.1.274 Y147S/M150H/F347Y/N349I highly increased activity towards short-chain carboxylic acids and aromatic acids like hydroxybenzoic acids, vanillic acid, jasmonic acid, cinnamic acid, 4-coumaric acid and caffeic acid, broadest substrate spectrum 723402 2.1.1.274 Y147S/M150H/I225Q/F347Y greatest specific activities against 3-hydroxybenzoic acid, vanillic acid and jasmonic acid but reduced activity towards salicylic acid 723402