TY  - JOUR

AU  - Garnik, E.Yu.
AU  - Belkov, V.I.
AU  - Tarasenko, V.I.
AU  - Konstantinov, Yu.M.

T1  - The Role of Sugar-related Regulation in the Light-dependent Alterations of Arabidopsis Glutamate Dehydrogenase Genes Expression
JO  - Journal of Stress Physiology & Biochemistry

Y1  - 2014

VL  - 10

IS  - 4

SP  - 67

EP  - 76

UR  - http://www.jspb.ru/issues/2014/N4/JSPB_2014_4_67-76.pdf


KW  - Arabidopsis thaliana
KW  - Arabidopsis mutants
KW  - glutamate dehydrogenase
KW  - hexokinase 1
KW  - sugar sensing and signaling





N1  - Owner: Алексей

N1  - Added to JabRef: 2014.11.12

N2  - 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.

ER  -