Abstract
The pxd mutant of Arabidopsis thaliana features a changed pattern of anionic peroxidases: three anionic isoforms in the pxd mutant plant have the same enzymatic activity but relatively high electrophoretic mobility as compared to the analogous isoforms in the wild type plants. These isoforms are the most active anionic peroxidases and can be found in most plant organs. Genetic analysis showed that all three isoforms are controlled by the PXD gene. The activity of one isoform was affected by indolyl-3-acetic acid and other stress factors. Expressed sequence tags (EST) analysis of all putative peroxidase genes of A. thaliana revealed a group of the most actively and nonspecifically expressed genes. The promoter sequences of these genes were screened to find the cis-elements. We propose that PXD gene encodes one of nonspecific anionic peroxidases or a protein involved in posttranscriptional or posttranslational modification of the peroxidases.
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Lebedeva, O.V., Ezhova, T.A., Musin, S.M. et al. PXD Gene Controls Synthesis of Three Anionic Peroxidase Isoforms in Arabidopsis thaliana . Biology Bulletin 30, 124–132 (2003). https://doi.org/10.1023/A:1023233104523
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DOI: https://doi.org/10.1023/A:1023233104523