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ETT  -  auxin response transcription factor 3

Arabidopsis thaliana

Synonyms: ARF3, AUXIN RESPONSE TRANSCRIPTION FACTOR 3, ETTIN, T1B8.30, T1B8_30
 
 
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High impact information on ETT

  • Analyses of 5'-leader-reporter gene fusions showed that the uORFs of ETT and MP negatively regulate the translation of the downstream major ORFs, indicating that translation reinitiation is an important step for the expression of these proteins [1].
  • Double mutant analysis suggests that ETTIN interacts with TSL, possibly by restricting TSL expression to apical regions [2].
  • A database analysis method identifies an endogenous trans-acting short-interfering RNA that targets the Arabidopsis ARF2, ARF3, and ARF4 genes [3].
  • A screen for mutations that suppress this precocious phenotype yielded alleles of two auxin-related transcription factors known to be upregulated in zip: ETTIN (ETT)/ARF3 and ARF4 [4].
  • We conclude that the precocious phenotype of zip is attributable to the absence of tasiR-ARF-mediated repression of ETT and ARF4 [4].
 

Biological context of ETT

 

Other interactions of ETT

  • Double mutant analyses also demonstrate that ETT functions independently of the 'b' class genes APETELA3 and PISTILLATA [5].
  • We show that the juvenile-to-adult phase transition is normally suppressed by TAS3 ta-siRNAs, in an ARGONAUTE7-dependent manner, through negative regulation of ARF3 mRNA [8].
  • Chemical inhibition of polar auxin transport (PAT) severely affects the apical-basal patterning of the gynoecium, as do mutations in the auxin transport/signalling genes PIN1, PID and ETT [9].
  • A model is proposed in which SEU functions jointly with ETT in auxin response to promote floral organ patterning and growth [10].

References

  1. The Arabidopsis STV1 protein, responsible for translation reinitiation, is required for auxin-mediated gynoecium patterning. Nishimura, T., Wada, T., Yamamoto, K.T., Okada, K. Plant Cell (2005) [Pubmed]
  2. TOUSLED participates in apical tissue formation during gynoecium development in Arabidopsis. Roe, J.L., Nemhauser, J.L., Zambryski, P.C. Plant Cell (1997) [Pubmed]
  3. A database analysis method identifies an endogenous trans-acting short-interfering RNA that targets the Arabidopsis ARF2, ARF3, and ARF4 genes. Williams, L., Carles, C.C., Osmont, K.S., Fletcher, J.C. Proc. Natl. Acad. Sci. U.S.A. (2005) [Pubmed]
  4. Trans-acting siRNA-mediated repression of ETTIN and ARF4 regulates heteroblasty in Arabidopsis. Hunter, C., Willmann, M.R., Wu, G., Yoshikawa, M., de la Luz Gutiérrez-Nava, M., Poethig, S.R. Development (2006) [Pubmed]
  5. ETTIN patterns the Arabidopsis floral meristem and reproductive organs. Sessions, A., Nemhauser, J.L., McColl, A., Roe, J.L., Feldmann, K.A., Zambryski, P.C. Development (1997) [Pubmed]
  6. Auxin and ETTIN in Arabidopsis gynoecium morphogenesis. Nemhauser, J.L., Feldman, L.J., Zambryski, P.C. Development (2000) [Pubmed]
  7. Dimerization and DNA binding of auxin response factors. Ulmasov, T., Hagen, G., Guilfoyle, T.J. Plant J. (1999) [Pubmed]
  8. Regulation of AUXIN RESPONSE FACTOR3 by TAS3 ta-siRNA affects developmental timing and patterning in Arabidopsis. Fahlgren, N., Montgomery, T.A., Howell, M.D., Allen, E., Dvorak, S.K., Alexander, A.L., Carrington, J.C. Curr. Biol. (2006) [Pubmed]
  9. STY1 regulates auxin homeostasis and affects apical-basal patterning of the Arabidopsis gynoecium. Sohlberg, J.J., Myrenås, M., Kuusk, S., Lagercrantz, U., Kowalczyk, M., Sandberg, G., Sundberg, E. Plant J. (2006) [Pubmed]
  10. The role of SEUSS in auxin response and floral organ patterning. Pfluger, J., Zambryski, P. Development (2004) [Pubmed]
 
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