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Stress‐responsive expression of genes for two‐component response regulator‐like proteins in Arabidopsis thaliana
Author(s) -
Urao Takeshi,
Yakubov Bakhtiyor,
Yamaguchi-Shinozaki Kazuko,
Shinozaki Kazuo
Publication year - 1998
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(98)00418-9
Subject(s) - arabidopsis , arabidopsis thaliana , regulator , proline , gene , biology , response regulator , phosphorylation , biochemistry , amino acid , microbiology and biotechnology , genetics , mutant
Four cDNAs that encode two‐component response regulator‐like proteins were cloned from Arabidopsis thaliana . Putative proteins (ATRR1–4) contain a receiver domain with a conserved aspartate residue – a possible phosphorylation site – at the N‐terminal half. ATRR2 lacks the C‐terminal half; the others contain a C‐terminal domain abundant in acidic amino acids or proline residues. ATRR1 and ATRR2 are expressed more in roots than in other tissues and are induced by low temperature, dehydration and high salinity. Levels of ATRR3 and ATRR4 were not affected by stress treatments. These results suggest that ATRRs play distinct physiological roles in Arabidopsis , and that some are involved in stress responses.