| Autor: |
E.Yu. Garnik, V.I. Belkov, V.I. Tarasenko, Yu.M. Konstantinov |
| Jazyk: |
English<br />Russian |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Journal of Stress Physiology & Biochemistry, Vol 10, Iss 4, Pp 67-76 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
1997-0838 |
| Popis: |
Expression of gdh1 and gdh2 genes of Arabidopsis thaliana increases in the dark and decreases in the light. The reason of such alteration seems to be a glucose rising in photosynthetic cell in the light, but this hypothesis needs to be confirmed. In this work we investigate the role of glucose and hexokinase 1 in the light-dependent regulation of the gdh1 and gdh2 expression. A comparison of expression profiles of apl3, gdh1, gdh2 genes in presenсe of exogenous sucrose in the dark and in the light has demonstrated that sugar-related repression of gdh1 and gdh2 genes is insufficient to provide the high decrease of their transcripts in the light. Using Arabidopsis mutant gin2-1 with a defect in hxk1 gene we demonstrated that such a decrease is not depended on the regulatory function of hexokinase 1. We presume that light- dependent alterations of gdh1 and gdh2 expression are mediated by some chloroplast-to-nucleus regulatory signals. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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