Claim · model-written summary
Combined drought and heat stress reduced superoxide dismutase and catalase activities in Kentucky bluegrass.
- Taxon
- Kentucky bluegrass
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Poa pratensise1 - Treatment
- combined drought and heat stresse2
- Outcome
- activities of superoxide dismutase (SOD) and catalase (CAT)e3
- Direction
- declinede3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e1“Kentucky bluegrass ( Poa pratensis L.)”
e2“exposed to combined drought and heat stress”
e3“Leaf photochemical efficiency (Fv/Fm), chlorophyll content, and activities of superoxide dismutase (SOD) and catalase (CAT) declined”
Title
Physiological Recovery of Kentucky Bluegrass from Simultaneous Drought and Heat Stress
Zhaolong Wang; Bingru Huang Crop Science 2004. doi:10.2135/cropsci2004.1729
Other claims from this paper (10)
- Intervention effect Combined drought and heat stress reduced leaf Fv/Fm and chlorophyll content in Kentucky bluegrass.
- Intervention effect Combined stress increased electrolyte leakage and lipid peroxidation in Kentucky bluegrass.
- Intervention effect The combined stress had a more severe adverse impact on Brilliant than on Midnight.
- Intervention effect After rewatering or rewatering with cooling, all parameters except chlorophyll content fully recovered in Midnight.
- Intervention effect Most parameters of Brilliant did not recover completely after the recovery treatments.
- Intervention effect Fv/Fm of Brilliant recovered only partially after the recovery treatments.
- Intervention effect No parameter of either cultivar recovered when plants were returned to optimum temperature without rewatering.
- Intervention effect Simultaneous drought and heat stress could cause permanent physiological damage in Kentucky bluegrass (author interpretation).
- Intervention effect Rewatering was essential for physiological recovery from the combined stress, regardless of temperature (author interpretation).
- Mechanism Rapid resumption of Fv/Fm, cell membrane stability and antioxidant activities contributed to recovery of Kentucky bluegrass (author interpretation).