Giant mitochondria in chloroplast-deprivedEuglena gracilis late after N-succinimidylofloxacin treatment

Euglena gracilis cells were treated with N-succinimidylofloxacin. After two years of cultivation of chloroplast-free mutants a number of anomalous mitochondria have been observed. Aberrant mitochondria about 5–8 μm long and wide with unusual shape, disfigured mitochondria with enormous size, giant s...

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Bibliographic Details
Published in:Folia microbiologica 1998-12, Vol.43 (6), p.661-666
Main Authors: Polónyi, J., Ebringer, L., Dobias, J., Krajčovič, J.
Format: Article
Language:English
Subjects:
Apoptosis
Cell death
Chloroplasts
Euglena
Euglena gracilis
Mitochondria
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Summary:Euglena gracilis cells were treated with N-succinimidylofloxacin. After two years of cultivation of chloroplast-free mutants a number of anomalous mitochondria have been observed. Aberrant mitochondria about 5–8 μm long and wide with unusual shape, disfigured mitochondria with enormous size, giant swollen oval-shaped megamitochondria, narrow and very long (50–60 μm) mitochondria localized at the cell perimeter were found in addition to normal mitochondria. The volume percentage of aberrant mitochondria in 58% of cells reached 65%. Swollen mitochondria probably do not fulfil the mitochondrial function and may cause cell death with subsequent elimination of injured mitochondria.
ISSN:0015-5632
1874-9356
DOI:10.1007/BF02816386