The Chlamydomonas reinhardtii alternative oxidase 1 is regulated by heat stress

Copyright © 2015 Elsevier Masson SAS. All rights reserved.

Détails bibliographiques
Publié dans:Plant physiology and biochemistry : PPB. - 1991. - 97(2015) vom: 11. Dez., Seite 229-34
Auteur principal: Zalutskaya, Zhanneta (Auteur)
Autres auteurs: Lapina, Tatiana, Ermilova, Elena
Format: Article en ligne
Langue:English
Publié: 2015
Accès à la collection:Plant physiology and biochemistry : PPB
Sujets:Journal Article Research Support, Non-U.S. Gov't Alternative oxidase Calcium Chlamydomonas reinhardtii Heat stress Inhibitor feeding Quantitative real-time RT-PCR DNA-Binding Proteins Heat Shock Transcription Factors plus... Mitochondrial Proteins Plant Proteins RNA, Messenger Transcription Factors Egtazic Acid 526U7A2651 Oxidoreductases EC 1.- alternative oxidase Staurosporine H88EPA0A3N SY7Q814VUP
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520 |a The alternative oxidase (AOX) is a non-energy conserving terminal oxidase that has emerged as an important mitochondrial component of the cell stress responses. Although the most studied abiotic condition in relation to Chlamydomonas reinhardtii is high temperature, changes in AOX capacity of the alga were studied only under oxidative stress and cold. To examine whether elevated temperatures affected AOX1 expression, we applied quantitative real-time PCR and pharmaceutical approaches. In this work, we demonstrated a sharp increase in AOX1 transcript and protein abundance under heat stress. Furthermore, C. reinhardtii cells displayed a large increase in alternative respiration in response to high temperature. Feeding with the protein kinase inhibitor staurosporine strongly retarded the AOX1 transcription. Finally, the addition of the calcium chelator EGTA prevented heat-induced AOX1 expression. Together, our results imply that heat-inducible Ca(2+) influx and protein kinase(s) may mediate AOX1 expression at elevated temperatures. Characterization of heat-induced AOX1 regulation in the green alga C. reinhardtii provides a framework for a more complete understanding of the function of this conserved protein 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Alternative oxidase 
650 4 |a Calcium 
650 4 |a Chlamydomonas reinhardtii 
650 4 |a Heat stress 
650 4 |a Inhibitor feeding 
650 4 |a Quantitative real-time RT-PCR 
650 7 |a DNA-Binding Proteins  |2 NLM 
650 7 |a Heat Shock Transcription Factors  |2 NLM 
650 7 |a Mitochondrial Proteins  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a RNA, Messenger  |2 NLM 
650 7 |a Transcription Factors  |2 NLM 
650 7 |a Egtazic Acid  |2 NLM 
650 7 |a 526U7A2651  |2 NLM 
650 7 |a Oxidoreductases  |2 NLM 
650 7 |a EC 1.-  |2 NLM 
650 7 |a alternative oxidase  |2 NLM 
650 7 |a EC 1.-  |2 NLM 
650 7 |a Staurosporine  |2 NLM 
650 7 |a H88EPA0A3N  |2 NLM 
650 7 |a Calcium  |2 NLM 
650 7 |a SY7Q814VUP  |2 NLM 
700 1 |a Lapina, Tatiana  |e verfasserin  |4 aut 
700 1 |a Ermilova, Elena  |e verfasserin  |4 aut 
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