Claim · model-written summary
Lipid peroxidation in potato cells during post-anoxia is mainly due to lipoxygenase, with a negligible contribution of reactive oxygen species.
- Taxon
- potato
Solanum tuberosume0 - Gene
- lipoxygenasee7
- Outcome
- Lipid peroxidatione7
- Qualifier
- the contribution of reactive oxygen species is negligiblee7
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using potato (Solanum tuberosum cv Bintje) cell cultures”
e7“Lipid peroxidation in potato cells is therefore low during post-anoxia. It is mainly due to lipoxygenase, whereas the contribution of reactive oxygen species is negligible”
Title
Impact of Post-Anoxia Stress on Membrane Lipids of Anoxia-Pretreated Potato Cells. A Re-Appraisal
Danijela Pavelic; Silvio Arpagaus; André Rawyler; et al. PLANT PHYSIOLOGY 2000. doi:10.1104/pp.124.3.1285
Other claims from this paper (12)
- Observation In re-oxygenated pre-lytic anoxic potato cells, superoxide anion was not detectable.
- Intervention effect In re-oxygenated pre-lytic anoxic potato cells, hydrogen peroxide remained small and similar to controls.
- Observation Cell viability was preserved in re-oxygenated pre-lytic anoxic potato cells.
- Observation Lipids stayed intact and no lipid hydroperoxides were detected in re-oxygenated pre-lytic potato cells.
- Intervention effect Feeding anoxic potato cells with H2O2 led to small amounts of lipid hydroperoxides accumulating under anoxia.
- Intervention effect In cells in the lytic phase of anoxia, re-oxygenation left H2O2 and superoxide anion levels essentially unchanged.
- Intervention effect Cell respiration decreased in lytic-phase potato cells after re-oxygenation.
- Observation Lipid hydroperoxides formed at 1% to 2% of total fatty acids in lytic-phase potato cells after re-oxygenation.
- Observation A massive release of free polyunsaturated fatty acids occurred in lytic-phase potato cells.
- Intervention effect Catalase and superoxide dismutase activities were not greatly affected by anoxia.
- Intervention effect The amount and activity of lipoxygenase tended to increase during anoxia.
- Association Lipid peroxidation is a late event that occurs only after irreversible damage from anoxia-triggered lipid hydrolysis.