PMID- 17364223 OWN - NLM STAT- MEDLINE DCOM- 20070626 LR - 20220317 IS - 0167-4412 (Print) IS - 0167-4412 (Linking) VI - 64 IP - 1-2 DP - 2007 May TI - Overexpression of salicylic acid carboxyl methyltransferase reduces salicylic acid-mediated pathogen resistance in Arabidopsis thaliana. PG - 1-15 AB - We cloned a salicylic acid/benzoic acid carboxyl methyltransferase gene, OsBSMT1, from Oryza sativa. A recombinant OsBSMT1 protein obtained by expressing the gene in Escherichia coli exhibited carboxyl methyltransferase activity in reactions with salicylic acid (SA), benzoic acid (BA), and de-S-methyl benzo(1,2,3)thiadiazole-7-carbothioic acid (dSM-BTH), producing methyl salicylate (MeSA), methyl benzoate (MeBA), and methyl dSM-BTH (MeBTH), respectively. Compared to wild-type plants, transgenic Arabidopsis overexpressing OsBSMT1 accumulated considerably higher levels of MeSA and MeBA, some of which were vaporized into the environment. Upon infection with the bacterial pathogen Pseudomonas syringae or the fungal pathogen Golovinomyces orontii, transgenic plants failed to accumulate SA and its glucoside (SAG), becoming more susceptible to disease than wild-type plants. OsBSMT1-overexpressing Arabidopsis showed little induction of PR-1 when treated with SA or G. orontii. Notably, incubation with the transgenic plant was sufficient to trigger PR-1 induction in neighboring wild-type plants. Together, our results indicate that in the absence of SA, MeSA alone cannot induce a defense response, yet it serves as an airborne signal for plant-to-plant communication. We also found that jasmonic acid (JA) induced AtBSMT1, which may contribute to an antagonistic effect on SA signaling pathways by depleting the SA pool in plants. FAU - Koo, Yeon Jong AU - Koo YJ AD - School of Agricultural Biotechnology, Seoul National University, Seoul 151-742, Korea. FAU - Kim, Myeong Ae AU - Kim MA FAU - Kim, Eun Hye AU - Kim EH FAU - Song, Jong Tae AU - Song JT FAU - Jung, Choonkyun AU - Jung C FAU - Moon, Joon-Kwan AU - Moon JK FAU - Kim, Jeong-Han AU - Kim JH FAU - Seo, Hak Soo AU - Seo HS FAU - Song, Sang Ik AU - Song SI FAU - Kim, Ju-Kon AU - Kim JK FAU - Lee, Jong Seob AU - Lee JS FAU - Cheong, Jong-Joo AU - Cheong JJ FAU - Choi, Yang Do AU - Choi YD LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070316 PL - Netherlands TA - Plant Mol Biol JT - Plant molecular biology JID - 9106343 RN - 0 (Cyclopentanes) RN - 0 (Oxylipins) RN - 0 (Plant Proteins) RN - 0 (Recombinant Proteins) RN - 0 (Salicylates) RN - 6RI5N05OWW (jasmonic acid) RN - EC 2.1.1.- (Methyltransferases) RN - EC 2.1.1.- (salicylic acid carboxyl methyltransferase) RN - LAV5U5022Y (methyl salicylate) RN - O414PZ4LPZ (Salicylic Acid) SB - IM MH - Amino Acid Sequence MH - Arabidopsis/*genetics/microbiology/physiology MH - Ascomycota/physiology MH - Cloning, Molecular MH - Cyclopentanes/metabolism MH - Immunity, Innate/genetics MH - Methyltransferases/*genetics/metabolism/physiology MH - Molecular Sequence Data MH - Oryza/genetics MH - Oxylipins MH - Plant Proteins/*genetics/metabolism/physiology MH - Plants, Genetically Modified/*enzymology/metabolism/microbiology MH - Pseudomonas syringae/physiology MH - Recombinant Proteins/metabolism MH - Salicylates/metabolism MH - Salicylic Acid/metabolism MH - Sequence Alignment EDAT- 2007/03/17 09:00 MHDA- 2007/06/27 09:00 CRDT- 2007/03/17 09:00 PHST- 2006/08/03 00:00 [received] PHST- 2006/12/07 00:00 [accepted] PHST- 2007/03/17 09:00 [pubmed] PHST- 2007/06/27 09:00 [medline] PHST- 2007/03/17 09:00 [entrez] AID - 10.1007/s11103-006-9123-x [doi] PST - ppublish SO - Plant Mol Biol. 2007 May;64(1-2):1-15. doi: 10.1007/s11103-006-9123-x. Epub 2007 Mar 16.