Stress response of OsETHE1 is altered in response to light and dark conditions.

Abstract

ETHYLMALONIC ENCEPHALOPATHY PROTEIN1 (ETHE1), encoding sulfur dioxygenase activity is believed to be an important candidate in sulfur metabolism, where it is involved in amino acid catabolism during carbohydrate starvation and embryo development as seen in Arabidopsis thaliana. OsETHE1, an ETHE1-encoding gene from rice, is in fact induced in response to abiotic stresses, condition which affects nutritional status of the plant, reflecting the need for nutrient remobilization. Sulfur reduction and assimilation are believed to be light-dependent processes and so the genes involved in sulfur oxidation must also be investigated for light-dependent regulatory effects. To this end, we show that the stress response of OsETHE1 is dependent on light and that darkness largely suppresses the stress response of this gene. However, the observed regulatory effect is intricate, varying according to the stress imposed; thereby suggesting the involvement of various aspects of signaling in this process.

• Authors: Charanpreet Kaur, Sneh Lata Singla-Pareek, Sudhir K Sopory
• Journal: Plant signaling & behavior (Plant Signal Behav) Vol. 9 Issue 11 Pg. e973820 ( 2014) ISSN: 1559-2324 [Electronic] United States
• PMID: 25482779 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Plant Proteins
• Sodium Chloride
• Glucuronidase

Topics

• Adaptation, Physiological (drug effects, genetics)
• Darkness
• Gene Expression Regulation, Plant (radiation effects)
• Glucuronidase (metabolism)
• Light
• Oryza (genetics, physiology, radiation effects)
• Plant Proteins (metabolism)
• Plant Roots (drug effects, metabolism)
• Plant Shoots (drug effects, metabolism)
• Plants, Genetically Modified
• Promoter Regions, Genetic (genetics)
• Seedlings (drug effects, genetics)
• Sodium Chloride (pharmacology)
• Stress, Physiological (genetics, radiation effects)