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Gene Review

PRR5  -  pseudo-response regulator 5

Arabidopsis thaliana

Synonyms: APRR5, T31K7.5, T31K7_5
 
 
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High impact information on APRR5

  • Thus PRR9 and PRR5 modulate light input to the circadian clock but are neither uniquely required for rhythm generation nor form a linear series of mutual PRR gene regulation [1].
  • The Arabidopsis pseudo-response regulators, PRR5 and PRR7, coordinately play essential roles for circadian clock function [2].
  • Aberrant expression of the Arabidopsis circadian-regulated APRR5 gene belonging to the APRR1/TOC1 quintet results in early flowering and hypersensitiveness to light in early photomorphogenesis [3].
  • Furthermore, APRR5-ox plants showed an SRL (short-hypocotyls under red light) phenotype that is indicative of hypersensitiveness to red light in early photomorphogenesis [3].
  • The resulting APRR5-overexpressing (APRR5-ox) plants showed intriguing properties with regard to not only circadian rhythms, but also control of flowering time and light response [3].
 

Other interactions of APRR5

  • To address this issue further, here we characterized a set of T-DNA insertion mutants, each of which is assumed to have a severe lesion in each one of the quintet genes (i.e. APRR5 and APRR7) [4].
  • Evidence will be provided that PRR5 plays an antagonistic role(s) to the putative CCA1 clock component [5].

References

  1. Response regulator homologues have complementary, light-dependent functions in the Arabidopsis circadian clock. Eriksson, M.E., Hanano, S., Southern, M.M., Hall, A., Millar, A.J. Planta (2003) [Pubmed]
  2. The Arabidopsis pseudo-response regulators, PRR5 and PRR7, coordinately play essential roles for circadian clock function. Nakamichi, N., Kita, M., Ito, S., Sato, E., Yamashino, T., Mizuno, T. Plant Cell Physiol. (2005) [Pubmed]
  3. Aberrant expression of the Arabidopsis circadian-regulated APRR5 gene belonging to the APRR1/TOC1 quintet results in early flowering and hypersensitiveness to light in early photomorphogenesis. Sato, E., Nakamichi, N., Yamashino, T., Mizuno, T. Plant Cell Physiol. (2002) [Pubmed]
  4. Comparative genetic studies on the APRR5 and APRR7 genes belonging to the APRR1/TOC1 quintet implicated in circadian rhythm, control of flowering time, and early photomorphogenesis. Yamamoto, Y., Sato, E., Shimizu, T., Nakamich, N., Sato, S., Kato, T., Tabata, S., Nagatani, A., Yamashino, T., Mizuno, T. Plant Cell Physiol. (2003) [Pubmed]
  5. PRR5 (PSEUDO-RESPONSE REGULATOR 5) plays antagonistic roles to CCA1 (CIRCADIAN CLOCK-ASSOCIATED 1) in Arabidopsis thaliana. Fujimori, T., Sato, E., Yamashino, T., Mizuno, T. Biosci. Biotechnol. Biochem. (2005) [Pubmed]
 
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