The Role of Sugar-related Regulation in the Light-dependent Alterations of Arabidopsis Glutamate Dehydrogenase Genes Expression
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2014, Vol 10, Issue 4
Abstract
Expression of [i]gdh1[/i] and [i]gdh2[/i] genes of [i]Arabidopsis thaliana[/i] 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 [i]gdh1[/i] and [i]gdh2[/i] expression. A comparison of expression profiles of [i]apl3[/i], [i]gdh1[/i], [i]gdh2[/i] genes in presenсe of exogenous sucrose in the dark and in the light has demonstrated that sugar-related repression of [i]gdh1[/i] and [i]gdh2[/i] genes is insufficient to provide the high decrease of their transcripts in the light. Using Arabidopsis mutant gin2-1 with a defect in [i]hxk1[/i] gene we demonstrated that such a decrease is not depended on the regulatory function of hexokinase 1. We presume that light- dependent alterations of [i]gdh1[/i] and [i]gdh2[/i] expression are mediated by some chloroplast-to-nucleus regulatory signals.
Authors and Affiliations
E. Garnik, V. Belkov, Yu. Konstantinov
Keywords
Related Articles
- EP ID EP100104
- DOI -
- Views 93
- Downloads 0
Evaluation of genetic diversity of an algerian durum wheat (Triticum durum Desf.) collection
Durum wheat (Triticum durum Desf.) has been extensively cultivated in Algeria for many centuries. During this long period, the species encountered a large diversification implied by the great diversity of climates that l...
Activity of the Respiratory Chain Enzymes of Blood Leucocytes’ Mitochondria Under the Conditions of Toxic Hepatitis Induced Against the Background Alimentary Deprivation of Protein
Full functioning of the leucocytes’ energy supply system is one of the essential factors for the immune surveillance system effective work. The pivotal enzymes of the leucocytes’ energy biotransformation system are NADH-...
BIOLOGICAL FUNCTION OF TOMBUSVIRUS-ENCODED SUPPRESSOR OF RNA SILENCING IN PLANTS
Protective Effect of Ghrelin on Isoniazid-induced Liver Injury in Rat
Ghrelin (GHR) is a peptide that has protective effects on many tissues injury. It has anti-inflammatory and anti-oxidant effects. Isoniazid (INH) a widely used antituberculosis drug, has hepatotoxic side effect. The aim...
ABA biosynthesis defective mutants reduce some free amino acids accumulation under drought stress in tomato leaves in comparison with Arabidopsis plants tissues
The ability of plants to tolerate drought conditions is crucial for plant survival and crop production worldwide. The present data confirm previous findings reported existence of a strong relation between abscisic acid (...