Claim · model-written summary
Initial exposure to 12 °C increased SOD activity, free proline, and MDA content.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- 12 °Ce1
- Outcome
- activity of the antioxidant enzyme superoxide dismutase (SOD), enlarge the content of free proline and the final product of lipid peroxidation (LPO) – malondialdehyde (MDA)e0
- Direction
- promotee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“promote the activity of the antioxidant enzyme superoxide dismutase (SOD), enlarge the content of free proline and the final product of lipid peroxidation (LPO) – malondialdehyde (MDA)”
t0“THE RESPONSE OF CUCUMBER PLANTS TO LOW TEMPERATURE IMPACTS OF VARYING INTENSITY”
e1“We studied the response of cucumber seedlings (Cucumis sativus L.) of the hybrid F1 Zozulya to 3‑day exposure to low positive temperatures of different intensities (12 °C and 4 °C). It was found that at initial phases of the impact low hardening (12 °C) and damaging (4 °C) temperatures inhibit the process of accumulation of cotyledons’ wet and dry biomass, promote the activity of the antioxidant enzyme superoxide dismutase (SOD), enlarge the content of free proline and the final product of lipid peroxidation (LPO) – malondialdehyde (MDA). Extended 3‑day exposure to the hardening 12 °С temperature re-launched growth processes with further increase of SOD activity and the level of free proline in leaves, thus promoting the cold tolerance of cucumber seedlings. In contrast, exposure to the damaging 4 °C temperature for 1–3 days caused irreversible inhibition of the accumulation of cotyledons’ wet and dry biomass, a significant increase of MDA and free proline, a decrease of SOD activity, and a decline of cold tolerance, eventually leading to damage and death of the seedlings.”
Title
THE RESPONSE OF CUCUMBER PLANTS TO LOW TEMPERATURE IMPACTS OF VARYING INTENSITY
Анна Анатольевна Игнатенко (Фенько); Наталья Сергеевна Репкина; Александр Федорович Титов; et al. Proceedings of the Karelian Research Centre of the Russian Academy of Sciences 2016. doi:10.17076/eb440
Other claims from this paper (10)
- Intervention effect Initial exposure to 12 °C inhibited cotyledon wet and dry biomass accumulation.
- Intervention effect Initial exposure to 4 °C inhibited cotyledon wet and dry biomass accumulation.
- Intervention effect Initial exposure to 4 °C increased SOD activity, free proline, and MDA content.
- Intervention effect Extended three-day exposure to 12 °C restarted growth.
- Intervention effect Extended three-day exposure to 12 °C further increased leaf SOD activity and free proline.
- Intervention effect Extended three-day exposure to 12 °C promoted cold tolerance.
- Intervention effect Exposure to 4 °C for one to three days irreversibly inhibited cotyledon wet and dry biomass accumulation.
- Intervention effect Exposure to 4 °C for one to three days significantly increased MDA and free proline.
- Intervention effect Exposure to 4 °C for one to three days decreased SOD activity and cold tolerance.
- Intervention effect Exposure to 4 °C for one to three days eventually damaged and killed seedlings.