Article (Scientific journals)
Isolation of Chlamydomonas reinhardtii mutants with altered mitochondrial respiration by chlorophyll fluorescence measurement.
Massoz, Simon; Larosa, Véronique; Horrion, Bastien et al.
2015In Journal of Biotechnology
Peer Reviewed verified by ORBi
 

Files


Full Text
MASSOZ_2015_JBIOTECH.pdf
Publisher postprint (1.35 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Fluorescence screening; Insertional mutants; Respiratory mutants
Abstract :
[en] The unicellular green alga Chlamydomonas reinhardtii is a model organism for studying energetic metabolism. Most mitochondrial respiratory-deficient mutants characterized to date have been isolated on the basis of their reduced ability to grow in heterotrophic conditions. Mitochondrial deficiencies are usually partly compensated by adjustment of photosynthetic activity and more particularly by transition to state 2. In this work, we explored the opportunity to select mutants impaired in respiration and/or altered in dark metabolism by measuring maximum photosynthetic efficiency by chlorophyll fluorescence analyses (FV/FM). Out of about 2900 hygromycin-resistant insertional mutants generated from wild type or from a mutant strain deficient in state transitions (stt7 strain), 22 were found to grow slowly in heterotrophic conditions and 8 of them also showed a lower FV/FM value. Several disrupted coding sequences were identified, including genes coding for three different subunits of respiratory-chain complex I (NUO9, NUOA9, NUOP4) or for isocitrate lyase (ICL1). Overall, the comparison of respiratory mutants obtained in wild-type or stt7 genetic backgrounds indicated that the FV/FM value can be used to isolate mutants severely impaired in dark metabolism.
Disciplines :
Biochemistry, biophysics & molecular biology
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Massoz, Simon
Larosa, Véronique ;  Université de Liège > Département des sciences de la vie > Génétique et physiologie des microalgues
Horrion, Bastien
Matagne, René-Fernand ;  Université de Liège > Relations académiques et scientifiques (Sciences)
Remacle, Claire  ;  Université de Liège > Département des sciences de la vie > Génétique et physiologie des microalgues
Cardol, Pierre  ;  Université de Liège > Département des sciences de la vie > Génétique et physiologie des microalgues
Language :
English
Title :
Isolation of Chlamydomonas reinhardtii mutants with altered mitochondrial respiration by chlorophyll fluorescence measurement.
Publication date :
2015
Journal title :
Journal of Biotechnology
ISSN :
0168-1656
eISSN :
1873-4863
Publisher :
Elsevier, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2015 Elsevier B.V. All rights reserved.
Available on ORBi :
since 16 June 2015

Statistics


Number of views
95 (27 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
16
Scopus citations®
without self-citations
13
OpenCitations
 
15

Bibliography


Similar publications



Contact ORBi