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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Gene Review: 

RD22  -  dehydration-responsive protein RD22

Arabidopsis thaliana

Synonyms: ATRD22, RESPONSIVE TO DESSICATION 22, T14C9.150, T14C9_150
 
 
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Disease relevance of RD22

  • Northern analysis showed that RD22 mRNA is induced by salt stress as well as by water deficit but not by cold or heat stress [1].
 

High impact information on RD22

  • RNA gel blot analysis revealed a decrease in the induction of the ABA-responsive genes RD29a, KIN2, and RD22 but not COR47 in the Dex-induced transgenic plants [2].
  • Furthermore, in transgenic Arabidopsis plants, induced expression of the Aplysia ADPR cyclase gene resulted in an increase in ADPR cyclase activity and cADPR levels, as well as elevated expression of ABA-responsive genes KIN2, RD22, RD29a, and COR47 (although to a lesser extent than after ABA induction) [3].
  • The induction of RD22 mRNA by ABA was inhibited by cycloheximide [1].
  • Structural analysis of the RD22 genomic clone revealed that the structural gene (designated rd22) contains three introns, and only a single copy of the gene is present in the A. thaliana genome, while the gene for USP from V. faba is actually a family of genes with 10 to 20 members.(ABSTRACT TRUNCATED AT 250 WORDS)[1]
  • In addition, the ataig1 plants showed reduced expression of ABA-responsive genes, such as RD29A and RD22 [4].
 

Associations of RD22 with chemical compounds

  • The seed-specific expression of RD22 seems not to be regulated by ABA [1].

References

  1. The plant hormone abscisic acid mediates the drought-induced expression but not the seed-specific expression of rd22, a gene responsive to dehydration stress in Arabidopsis thaliana. Yamaguchi-Shinozaki, K., Shinozaki, K. Mol. Gen. Genet. (1993) [Pubmed]
  2. Arabidopsis PLC1 is required for secondary responses to abscisic acid signals. Sanchez, J.P., Chua, N.H. Plant Cell (2001) [Pubmed]
  3. ABA activates ADPR cyclase and cADPR induces a subset of ABA-responsive genes in Arabidopsis. Sánchez, J.P., Duque, P., Chua, N.H. Plant J. (2004) [Pubmed]
  4. Molecular characterization of a bHLH transcription factor involved in Arabidopsis abscisic acid-mediated response. Kim, J., Kim, H.Y. Biochim. Biophys. Acta (2006) [Pubmed]
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