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• W2342904477 endingPage "pp.00446.2016" @default.
• W2342904477 startingPage "pp.00446.2016" @default.
• W2342904477 abstract "Biosynthesis of the polyamines putrescine, spermidine, and spermine is induced in response to pathogen infection of plants. Putrescine, which is produced from Arg, serves as a metabolic precursor for longer polyamines, including spermidine and spermine. Polyamine acetylation, which has important regulatory functions in mammalian cells, has been observed in several plant species. Here we show that Arabidopsis (Arabidopsis thaliana) N-ACETYLTRANSFERASE ACTIVITY1 (NATA1) catalyzes acetylation of putrescine to N-acetylputrescine and thereby competes with spermidine synthase for a common substrate. NATA1 expression is strongly induced by the plant defense signaling molecule jasmonic acid and coronatine, an effector molecule produced by DC3000, a Pseudomonas syringae strain that initiates a virulent infection in Arabidopsis ecotype Columbia-0. DC3000 growth is reduced in nata1 mutant Arabidopsis, suggesting a role for NATA1-mediated putrescine acetylation in suppressing antimicrobial defenses. During infection by P. syringae and other plant pathogens, polyamine oxidases use spermidine and spermine as substrates for the production of defense-related H2O2. Compared to wild-type Columbia-0 Arabidopsis, the response of nata1mutants to P. syringae infection includes reduced accumulation of acetylputrescine, greater abundance of nonacetylated polyamines, elevated H2O2 production by polyamine oxidases, and higher expression of genes related to pathogen defense. Together, these results are consistent with a model whereby P. syringae growth is improved in a targeted manner through coronatine-induced putrescine acetylation by NATA1." @default.
• W2342904477 created "2016-06-24" @default.
• W2342904477 creator A5009665996 @default.
• W2342904477 creator A5045601633 @default.
• W2342904477 creator A5064901980 @default.
• W2342904477 creator A5082370180 @default.
• W2342904477 creator A5086006151 @default.
• W2342904477 date "2016-04-25" @default.
• W2342904477 modified "2023-10-18" @default.
• W2342904477 title "Arabidopsis NATA1 acetylates putrescine and decreases defense-related hydrogen peroxide accumulation" @default.
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• W2342904477 doi "https://doi.org/10.1104/pp.16.00446" @default.
• W2342904477 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4902623" @default.
• W2342904477 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27208290" @default.
• W2342904477 hasPublicationYear "2016" @default.
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