[en] In addition to lethal minute colony mutations which correspond to loss of mitochondrial DNA, acriflavin induces in Chlamydomonas reinhardtii a low percentage of cells that grow in the light but do not divide under heterotrophic conditions. Two such obligate photoautotrophic mutants were shown to lack the cyanide-sensitive cytochrome pathway of the respiration and to have a reduced cytochrome c oxidase activity. In crosses to wild type, the mutations are transmitted almost exclusively from the mating type minus parent. A same pattern of inheritance is seen for the mitochondrial DNA in crosses between the two interfertile species C. reinhardtii and Chlamydomonas smithii. Both mutants have a deletion in the region of the mitochondrial DNA containing the apocytochrome b gene and possibly the unidentified URFx gene.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Matagne, René-Fernand ; Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Michel-Wolwertz, M. R.
Munaut, Carine ; Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Duyckaerts, Claire ; Université de Liège - ULiège > Centre de l'oxygène : Recherche et développement (C.O.R.D.)
Sluse, Francis ; Université de Liège - ULiège > Département des sciences de la vie > Bioénergétique et physiologie cellulaire
Language :
English
Title :
Induction and Characterization of Mitochondrial DNA Mutants in Chlamydomonas Reinhardtii
Publication date :
April 1989
Journal title :
Journal of Cell Biology
ISSN :
0021-9525
eISSN :
1540-8140
Publisher :
Rockefeller University Press, United States - New York
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