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Characterization and biological function of the ISOCHORISMATE SYNTHASE 2 gene of Arabidopsis thaliana

Garcion, Christophe ; Lohmann, Antje ; Lamodiere, Elisabeth ; Catinot, Jeremy ; Buchala, Antony J. ; Doermann, Peter ; Métraux, Jean-Pierre

In: Plant Physiology, 2009, p. -

Salicylic acid (SA) is an important mediator of plant defense response. In Arabidopsis thaliana, this compound was proposed to derive mainly from isochorismate, itself produced from chorismate through the activity of ICS1 (Isochorismate Synthase1). Null ics1 mutants still accumulate some SA, suggesting the existence of an enzymatic activity redundant with ICS1 or of an alternative...