Abstract
Free fatty acids (FFA) generated in thylakoids upon chilling of tomato leaves at 0°C for a few days result in release of functionally active Mn and inactivation of O 2 evolution. Chilling does not lead to a decrease in the extrinsic 16, 23 and 33 kDa polypeptides. Upon illumination of chilled leaves both Mn content and O 2 evolution in thylakoids are restored and FFA content is reduced to the level of the control. Photoactivation of O 2 evolution in chilled leaves does not change the ratio of unsaturated/saturated FFA. Constant Arrhenius activation energy (Ea) for O 2 evolution by thylakoids isolated from control leaves was found, whereas it increased at temperatures below 8.0 and 10.5°C in thylakoids from cold‐treated and photoactivated leaves, respectively. This indicates that restoration of O 2 evolution as well as of FFA and Mn contents is not accompanied by a complete reversal of membrance conformation.
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Claims 11
Claim · model-written summary
Chilling generated free fatty acids in tomato thylakoids.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- leavese0
- Treatment
- chillinge0
- Outcome
- Free fatty acids (FFA)e0
- Direction
- generatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Free fatty acids (FFA) generated in thylakoids upon chilling of tomato leaves at 0°C for a few days”
Claim · model-written summary
Chilling released functionally active Mn.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- chillinge0
- Outcome
- functionally active Mne0
- Direction
- releasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chilling of tomato leaves at 0°C for a few days result in release of functionally active Mn”
Claim · model-written summary
Chilling inactivated oxygen evolution.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- chillinge0
- Outcome
- O 2 evolutione0
- Direction
- inactivatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chilling of tomato leaves at 0°C for a few days result in release of functionally active Mn and inactivation of O 2 evolution”
Claim · model-written summary
Chilling did not decrease extrinsic polypeptides.
- Treatment
- Chillinge0
- Outcome
- extrinsic 16, 23 and 33 kDa polypeptidese0
- Direction
- does not lead to a decreasee0
Not reportedTaxonComparator
Verbatim
e0“Chilling does not lead to a decrease in the extrinsic 16, 23 and 33 kDa polypeptides.”
Claim · model-written summary
Illumination restored thylakoid Mn content and oxygen evolution.
- Organ / stage
- leavese0
- Treatment
- illuminatione0
- Outcome
- Mn content and O 2 evolutione0
- Direction
- restorede0
Not reportedTaxonComparator
Verbatim
e0“Upon illumination of chilled leaves both Mn content and O 2 evolution in thylakoids are restored”
Claim · model-written summary
Illumination reduced free fatty acid content to control level.
Not reportedTaxon
Verbatim
e0“Upon illumination of chilled leaves both Mn content and O 2 evolution in thylakoids are restored and FFA content is reduced to the level of the control.”
Claim · model-written summary
Photoactivation left the unsaturated to saturated FFA ratio unchanged.
Not reportedTaxonComparator
Verbatim
e0“Photoactivation of O 2 evolution in chilled leaves does not change the ratio of unsaturated/saturated FFA.”
Claim · model-written summary
Activation energy was constant in control thylakoids.
Not reportedTaxon
Verbatim
e0“Constant Arrhenius activation energy (Ea) for O 2 evolution by thylakoids isolated from control leaves was found”
Claim · model-written summary
Activation energy increased below 8.0°C in cold-treated leaves.
Not reportedTaxon
Verbatim
e0“Constant Arrhenius activation energy (Ea) for O 2 evolution by thylakoids isolated from control leaves was found, whereas it increased at temperatures below 8.0 and 10.5°C in thylakoids from cold‐treated and photoactivated leaves, respectively”
Claim · model-written summary
Activation energy increased below 10.5°C in photoactivated leaves.
Not reportedTaxon
Verbatim
e0“Constant Arrhenius activation energy (Ea) for O 2 evolution by thylakoids isolated from control leaves was found, whereas it increased at temperatures below 8.0 and 10.5°C in thylakoids from cold‐treated and photoactivated leaves, respectively”
Claim · model-written summary
Restoration of thylakoid function and composition did not fully reverse membrane conformation.
- Outcome
- membrance conformatione0
- Qualifier
- restoration of O 2 evolution as well as of FFA and Mn contentse0
Not reportedTaxon
Verbatim
e0“restoration of O 2 evolution as well as of FFA and Mn contents is not accompanied by a complete reversal of membrance conformation.”
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See all 28 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.