Claim · model-written summary
Incubation at 45°C induced a slight increase in phospholipid content.
- Taxon
- sunflower (Helianthus annuus)
Helianthus annuust0 - Treatment
- Incubation of seeds at 45°Ce5
- Outcome
- phospholipid contente6
- Direction
- increasee6
- Qualifier
- slighte6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Decrease in sunflower (Helianthus annuus) seed viability”
e5“Incubation of seeds at 45°C resulted in an increase in triacylglycerols and diacylglycerols without a significant change in their fatty acid composition”
e6“It also induced a slight increase in phospholipid content with an increase in C 16:0 , C 18:0 and C 18:1 , but with no change in C 18:2”
Title
Françoise Corbineau; Chantal Gay‐Mathieu; Dominique Vinel; et al. Physiologia Plantarum 2002. doi:10.1034/j.1399-3054.2002.1160407.x
Other claims from this paper (17)
- Intervention effect Pre-treatment of seeds at 45°C progressively reduced subsequent germination at 25°C.
- Intervention effect Seeds did not germinate at 45°C and almost all were dead after 72 h of soaking at high temperature.
- Association Loss of seed viability was associated with a large increase in leakage of K+ and total electrolytes into the incubation medium.
- Observation Malondialdehyde production was observed in the embryonic axis and cotyledons.
- Mechanism Loss of membrane integrity is suggested to be probably due to lipid peroxidation.
- Intervention effect ATP and ADP levels increased sharply during the first hours of imbibition at 45°C.
- Intervention effect ATP and ADP levels remained high for about 24 h and then decreased during imbibition at 45°C.
- Observation The energy charge followed a similar pattern to the ATP and ADP levels.
- Observation Seeds recovered an apparently normal energy metabolism after transfer to 25°C when the 45°C treatment did not exceed 48 h.
- Observation Energy metabolism at the whole embryo level cannot be considered an indicator of germination ability.
- Intervention effect Incubation at 45°C increased triacylglycerols and diacylglycerols.
- Intervention effect Incubation at 45°C did not significantly change the fatty acid composition of total lipids.
- Intervention effect Incubation at 45°C increased the phospholipid C 16:0, C 18:0 and C 18:1 fatty acids.
- Intervention effect Incubation at 45°C did not change the phospholipid C 18:2 fatty acid.
- Intervention effect In phospholipids, the C 18:2/C 18:1 and (C 18:1 + C 18:2)/(C 16:0 + C 18:0) ratios declined during treatment at 45°C.
- Mechanism Deterioration of sunflower seeds during high-temperature incubation is mainly related to membrane damage and alteration of energy metabolism.
- Association Malondialdehyde accumulation did not correspond to a decrease in total lipids and phospholipids.