Constitutive activation of the receptor-like kinase NIK impairs translation and confers tolerance to begomovirus infection
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ABSTRACT: To generate an efficient defense against begomovirus, we modulated the activity of the immune defense receptor NIK (NSP-Interacting Kinase) in tomato plants; NIK is a virulence target of the begomovirus NSP during infection. Replacing threonine-474 with aspartate (T474D) within the kinase activation loop promoted the constitutive activation of NIK-mediated defenses. This activation resulted in the down-regulation of translation-related genes and the suppression of global translation in T474D-overexpressing tomato lines. We also found that T474D-induced defense-related transcripts were associated with polysomes and immune proteins, which accumulated to detectable levels in T474D leaves. Consistent with these findings, T474D transgenic lines were tolerant to the tomato-infecting begomoviruses ToYSV and ToSRV. We propose that NIK mediates an anti-viral response via translation suppression and immune system induction.
ORGANISM(S): Solanum lycopersicum
PROVIDER: GSE38028 | GEO | 2013/12/17
SECONDARY ACCESSION(S): PRJNA167102
REPOSITORIES: GEO
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