Document Detail

Role of singlet oxygen in chloroplast to nucleus retrograde signaling in Chlamydomonas reinhardtii.
MedLine Citation:
PMID:  17997989     Owner:  NLM     Status:  MEDLINE    
High light illumination of photosynthetic organisms stimulates the production of singlet oxygen by photosystem II and causes photooxidative stress. In Chlamydomonas reinhardtii, singlet oxygen also induces the expression of the nuclear-encoded glutathione peroxidase homologous gene GPXH. We provide evidence that singlet oxygen stimulates GPXH expression by activating a signaling mechanism outside the thylakoid membrane. Singlet oxygen from photosystem II could be detected with specific probes in the aqueous phase of isolated thylakoid suspensions and the cytoplasm of high light stressed cells. This indicates that singlet oxygen can stimulate a response farther from its production site than generally believed.
Beat B Fischer; Anja Krieger-Liszkay; Eva Hideg; Iva Snyrychová; Manuela Wiesendanger; Rik I L Eggen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-11-13
Journal Detail:
Title:  FEBS letters     Volume:  581     ISSN:  0014-5793     ISO Abbreviation:  FEBS Lett.     Publication Date:  2007 Dec 
Date Detail:
Created Date:  2007-12-06     Completed Date:  2008-03-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0155157     Medline TA:  FEBS Lett     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  5555-60     Citation Subset:  IM    
Department of Environmental Toxicology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Ueberlandstrasse 133, 8600, Dübendorf, Switzerland.
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MeSH Terms
Cell Nucleus / metabolism*
Chlamydomonas reinhardtii / genetics,  metabolism*
Chloroplasts / metabolism*
Glutathione Peroxidase / genetics,  metabolism
Photosystem II Protein Complex / metabolism
Rose Bengal / chemistry,  metabolism
Signal Transduction*
Singlet Oxygen / metabolism*
Spin Trapping
Reg. No./Substance:
0/Photosystem II Protein Complex; 11121-48-5/Rose Bengal; 17778-80-2/Singlet Oxygen; EC Peroxidase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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