Claim · model-written summary
Under high light intensity, hydrogen peroxide scavenging enzyme activity was lower than under low light intensity in aged sunflower leaves.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- high light intensitiese1
- Outcome
- hydrogen peroxide scavenging enzymese0
- Direction
- lowere0
- Comparator
- low light intensitiese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under those light condition, hydrogen peroxide scavenging enzymes and glutathione S-transferse activities were recorded at amounts lower than that of low light intensities”
e1“under high light intensities, the damage of oxidation stress”
t0“sunflower”
Title
Decline of tolerance in leaf photooxidative-stress with age in sunflower
Ezatollah Esfadiari; Amir Vahdati Rad Iranian Journal of Plant Biology 2013
Other claims from this paper (10)
- Observation Leaf aging did not change sunflower leaf chlorophyll content.
- Observation Sunflower leaf aging decreased total protein content and membrane stability index.
- Observation Sunflower leaf aging increased lipid peroxidation and hydrogen peroxide.
- Observation Senescent sunflower leaves had higher hydrogen peroxide scavenging enzyme activity than young leaves.
- Observation Senescent sunflower leaves had higher glutathione S-transferase activity than young leaves.
- Observation Sunflower cellular defense potential declined with increasing leaf age while oxidant production exceeded scavenging.
- Intervention effect Hydrogen peroxide in senescent sunflower leaves reached its highest level under high light intensity.
- Intervention effect Under high light intensity, glutathione S-transferase activity was lower than under low light intensity in aged sunflower leaves.
- Mechanism High light caused chlorophyll oxidation and reduced its content in aged sunflower leaves.
- Intervention effect Under high light, oxidative damage was greater in aged sunflower leaves than young leaves.