Plant perception of β-aminobutyric acid is mediated by an aspartyl-tRNA synthetase
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Otros documentos de la autoría: Luna Diez, Estrella; Van Hulten, Marieke; Zhang, Yuhua; Berkowitz, Oliver; López, Ana; Pétriacq, Pierre; Sellwood, Matthew A.; Chen, Beining; Burrell, Michael M.; Van De Meene, Allison M. L.; Pieterse, Corné MJ J; Flors, Victor; Ton, Jurriaan
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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INVESTIGACIONMetadatos
Título
Plant perception of β-aminobutyric acid is mediated by an aspartyl-tRNA synthetaseAutoría
Fecha de publicación
2014Editor
Nature Publishing GroupISSN
1552-4450; 1552-4469Cita bibliográfica
LUNA, Estrella, et al. Plant perception of β-aminobutyric acid is mediated by an aspartyl-tRNA synthetase. Nature chemical biology, 2014, vol. 10, no 6, p. 450-456.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.nature.com/nchembio/journal/v10/n6/full/nchembio.1520.htmlPalabras clave / Materias
Resumen
Specific chemicals can prime the plant immune system for augmented defense. β-aminobutyric acid (BABA) is a priming agent that provides broad-spectrum disease protection. However, BABA also suppresses plant growth ... [+]
Specific chemicals can prime the plant immune system for augmented defense. β-aminobutyric acid (BABA) is a priming agent that provides broad-spectrum disease protection. However, BABA also suppresses plant growth when applied in high doses, which has hampered its application as a crop defense activator. Here we describe a mutant of Arabidopsis thaliana that is impaired in BABA-induced disease immunity (ibi1) but is hypersensitive to BABA-induced growth repression. IBI1 encodes an aspartyl-tRNA synthetase. Enantiomer-specific binding of the R enantiomer of BABA to IBI1 primed the protein for noncanonical defense signaling in the cytoplasm after pathogen attack. This priming was associated with aspartic acid accumulation and tRNA-induced phosphorylation of translation initiation factor eIF2α. However, mutation of eIF2α-phosphorylating GCN2 kinase did not affect BABA-induced immunity but relieved BABA-induced growth repression. Hence, BABA-activated IBI1 controls plant immunity and growth via separate pathways. Our results open new opportunities to separate broad-spectrum disease resistance from the associated costs on plant growth. [-]
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Nature chemical biology, 2014, vol. 10, no 6Derechos de acceso
© 2014 Nature America, Inc.
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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