Claim · model-written summary
Dark-chilled chloroplasts showed changes in metabolite distribution, more substantial than in light-chilled chloroplasts.
- Taxon
- cucumber
Cucumis sativuse1 - Treatment
- dark-chilled chloroplastse0
- Outcome
- metabolite distributione0
- Direction
- changese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Separation of photosynthates showed changes in metabolite distribution, but more substantially in the dark-chilled chloroplasts, indicating that stromal enzymes were affected”
e1“using leaf discs taken from chilled cucumber ( Cucumis sativus L.) plants”
Title
Sung-Soo Jun; Jong Min Kim; Chin Bum Lee Australian Journal of Plant Physiology 2001. doi:10.1071/pp00087
Other claims from this paper (17)
- Intervention effect Chilling in the light inhibited photosynthesis faster than chilling in the dark.
- Intervention effect Chilling in the light for 4 h caused about 50% inhibition of O2 evolution.
- Intervention effect Chilling in the light for 6 h caused about 90% inhibition of O2 evolution.
- Intervention effect Chilling in the dark for 24 h caused about 50% inhibition of O2 evolution.
- Intervention effect Chilling in the dark for 48 h caused about 90% inhibition of O2 evolution.
- Intervention effect Light chilling caused no decline in the Fv/Fm ratio after dark adaptation.
- Observation Chilling did not significantly change initial fluorescence (Fo) or Fv/Fm.
- Observation Chilling produced a notable change in fluorescence quenching parameters.
- Intervention effect Chloroplasts from 4-h light-chilled plants showed roughly 50% reduction in CO2 fixation.
- Intervention effect Chloroplasts from 24-h dark-chilled plants showed roughly 50% reduction in CO2 fixation.
- Intervention effect Reconstituted chloroplasts from light-chilled plants showed damage in thylakoids.
- Intervention effect Stroma from dark-chilled plants was less functional.
- Intervention effect Electron transport was hampered only in light-chilled plants, with lesions mostly in photosystem I.
- Mechanism The authors suggest that light chilling mainly interferes with thylakoid function.
- Mechanism The authors suggest that dark chilling mainly affects stromal function.
- Mechanism The authors infer that stromal enzymes were affected in dark-chilled chloroplasts.
- Intervention effect The decrease in photosynthesis during chilling in the light was not prominent for the initial 2 h.