Gene Symbol: SNI1
Description: negative regulator of systemic acquired resistance (SNI1)
Alias: F28J12.3, F28J12_3, INDUCIBLE 1, SUPPRESSOR OF NPR1-1, negative regulator of systemic acquired resistance (SNI1)
Species: thale cress

Top Publications

  1. Li X, Zhang Y, Clarke J, Li Y, Dong X. Identification and cloning of a negative regulator of systemic acquired resistance, SNI1, through a screen for suppressors of npr1-1. Cell. 1999;98:329-39 pubmed
    ..In the npr1-1 background, the sni1 (suppressor of npr1-1, inducible 1) mutant shows near wild-type levels of PR1 expression and resistance to pathogens after induction...
  2. Zhang Y, Fan W, Kinkema M, Li X, Dong X. Interaction of NPR1 with basic leucine zipper protein transcription factors that bind sequences required for salicylic acid induction of the PR-1 gene. Proc Natl Acad Sci U S A. 1999;96:6523-8 pubmed
    ..thaliana PR-1 gene. These data suggest that NPR1 may regulate PR-1 gene expression by interacting with a subclass of basic leucine zipper protein transcription factors. ..
  3. Mosher R, Durrant W, Wang D, Song J, Dong X. A comprehensive structure-function analysis of Arabidopsis SNI1 defines essential regions and transcriptional repressor activity. Plant Cell. 2006;18:1750-65 pubmed publisher
    ..Because SAR is a costly process, SAR-associated transcription must be tightly regulated. Arabidopsis thaliana SNI1 (for Suppressor of NPR1, Inducible) is a negative regulator of SAR required to dampen the basal expression of PR ..
  4. Durrant W, Wang S, Dong X. Arabidopsis SNI1 and RAD51D regulate both gene transcription and DNA recombination during the defense response. Proc Natl Acad Sci U S A. 2007;104:4223-7 pubmed
    ..Transcription of PR genes in Arabidopsis is regulated by the coactivator NPR1 and the repressor SNI1. Pathogen infection also triggers an increase in somatic DNA recombination, which results in transmission of ..
  5. Kesarwani M, Yoo J, Dong X. Genetic interactions of TGA transcription factors in the regulation of pathogenesis-related genes and disease resistance in Arabidopsis. Plant Physiol. 2007;144:336-46 pubmed
    ..Finally, we examined the genetic interaction between tga2-2 and suppressor of npr1 inducible1 (sni1-1)...
  6. Wubben M, Jin J, Baum T. Cyst nematode parasitism of Arabidopsis thaliana is inhibited by salicylic acid (SA) and elicits uncoupled SA-independent pathogenesis-related gene expression in roots. Mol Plant Microbe Interact. 2008;21:424-32 pubmed publisher
    ..schachtii, whereas the npr1-suppressor mutation sni1 showed decreased susceptibility...
  7. Song J, Durrant W, Wang S, Yan S, Tan E, Dong X. DNA repair proteins are directly involved in regulation of gene expression during plant immune response. Cell Host Microbe. 2011;9:115-24 pubmed publisher
    ..Arabidopsis sni1 is an npr1 suppressor and derepression of defense genes in sni1 causes reduced growth and fertility and increased ..
  8. Kim H, Park H, Kim K, Jung M, Han H, Kim S, et al. A NAC transcription factor and SNI1 cooperatively suppress basal pathogen resistance in Arabidopsis thaliana. Nucleic Acids Res. 2012;40:9182-92 pubmed publisher
    ..CBNAC bound directly to the PR1 promoter. SNI1 (suppressor of nonexpressor of PR genes1, inducible 1) was identified as a CBNAC-binding protein...
  9. Ma H, Song T, Wang T, Wang S. Influence of Human p53 on Plant Development. PLoS ONE. 2016;11:e0162840 pubmed publisher
    ..In contrast to p53, SUPPRESSOR OF NPR1-1 INDUCIBLE 1 (SNI1), as a negative regulator of homologous recombination in plants, is not present in mammals...

More Information


  1. Pape S, Thurow C, Gatz C. The Arabidopsis PR-1 promoter contains multiple integration sites for the coactivator NPR1 and the repressor SNI1. Plant Physiol. 2010;154:1805-18 pubmed publisher
    ..OF PR GENES1 (NPR1), which physically interacts with TGA factors, and the repressor SUPPRESSOR OF NPR1, INDUCIBLE1 (SNI1)...
  2. Pape S, Thurow C, Gatz C. Exchanging the as-1-like element of the PR-1 promoter by the as-1 element of the CaMV 35S promoter abolishes salicylic acid responsiveness and regulation by NPR1 and SNI1. Plant Signal Behav. 2010;5:1669-71 pubmed
    ..Moreover, the promoter is under the control of the negative regulator SNI1 (SUPPRESSOR OF NPR1, INDUCIBLE1)...
  3. Yan S, Wang W, Marques J, Mohan R, Saleh A, Durrant W, et al. Salicylic acid activates DNA damage responses to potentiate plant immunity. Mol Cell. 2013;52:602-10 pubmed publisher
    ..These sensor proteins are negatively regulated by a key immune regulator, SNI1 (suppressor of npr1-1, inducible 1), which we found is a subunit of the structural maintenance of chromosome (SMC) 5/6 complex required for ..