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- W2804522019 abstract "Salicylic acid (SA) is an essential hormone for development and induced defense against biotrophic pathogens in plants. The formation of SA mainly derives from chorismate via demonstrated isochorismate synthase (ICS) and presumed isochorismate pyruvate lyase (IPL)-mediated steps in Arabidopsis thaliana, but so far no plant enzyme displaying IPL activity has been identified. Here, we developed an E. coli SA biosensor to screen for IPL activity based on the SalR regulator/salA promoter combination from Acinetobacter sp ADP1, to control the expression of the reporter luxCDABE. The biosensor was responsive to micromolar concentrations of exogenous SA, and to endogenous SA produced after transformation with a plasmid permitting IPTG-inducible expression of bacterial IPL in this biosensor strain. After screening a cDNA library constructed from turnip crinkle virus (TCV)-infected Arabidopsis ecotype Di-17, we identified an enzyme, PRXR1, as a putative IPL that converts isochorismate into SA. Our results provide a new experimental approach to identify IPL and new insights into the SA biosynthesis pathway in Arabidopsis." @default.
- W2804522019 created "2018-06-01" @default.
- W2804522019 creator A5029943656 @default.
- W2804522019 creator A5037482637 @default.
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- W2804522019 date "2018-05-23" @default.
- W2804522019 modified "2023-09-29" @default.
- W2804522019 title "An E. coli biosensor for screening of cDNA libraries for isochorismate pyruvate lyase-encoding cDNAs" @default.
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- W2804522019 doi "https://doi.org/10.1007/s00438-018-1450-5" @default.
- W2804522019 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6153503" @default.
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