Journal
CURRENT OPINION IN PLANT BIOLOGY
Volume 50, Issue -, Pages 29-36Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2019.02.004
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- NSERC-Discovery program
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Salicylic acid (SA) has emerged as a key plant defense hormone with critical roles in different aspects of plant immunity. Analysis of Arabidopsis mutants revealed complex regulation of pathogen-induced SA biosynthesis. Studies on SA-insensitive mutants led to the identification of the SA receptors and how SA regulates defense gene expression. Consistent with its critical roles in plant immunity, SA is required for the assembly of a normal root microbiome and various pathogen effectors have evolved to target components of SA biosynthesis or signaling. This review discusses recent advances in SA biology, focusing in particular on the regulation of SA biosynthesis and SA perception.
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