Abstract
SUMMARY Protein content, catalase activity (CAT), non‐specific peroxidase activity (POD), ascorbic acid content (AsA) and malondialdehyde content (MDA) were estimated in flag leaves of spring wheat exposed to ozone and drought stress in open‐top chambers. Four harvests were carried out at different developmental stages to estimate the time course of these parameters. Senescence was enhanced by ozone which was reflected in the time course of the oxidant stress biomarkers. Protein content decreased, and POD and MDA increased only after the leaves had experienced high doses of ozone, whereas AsA levels were raised in ozone‐treated plants after only a short exposure period. CAT did not significantly respond to ozone treatment, but, ozone accelerated the progress of its time course. Drought stress did not influence the time course of any of the estimated parameters, but led to somewhat increased levels of AsA.
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Claims 8
Claim · model-written summary
Ozone enhanced flag-leaf senescence.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- ozonee0
- Outcome
- Senescencee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Senescence was enhanced by ozone”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
Claim · model-written summary
Protein content fell after high ozone doses.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- high doses of ozonee0
- Outcome
- Protein contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content decreased, and POD and MDA increased only after the leaves had experienced high doses of ozone”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
Claim · model-written summary
POD and MDA increased only after high ozone doses.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- high doses of ozonee0
- Outcome
- POD and MDAe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein content decreased, and POD and MDA increased only after the leaves had experienced high doses of ozone”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
Claim · model-written summary
AsA levels rose after a short ozone exposure.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ozone‐treatede0
- Outcome
- AsA levelse0
- Direction
- raisede0
- Qualifier
- after only a short exposure periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AsA levels were raised in ozone‐treated plants after only a short exposure period”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
Claim · model-written summary
CAT did not significantly respond to ozone treatment.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ozone treatmente0
- Outcome
- CATe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAT did not significantly respond to ozone treatment”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
Claim · model-written summary
Ozone accelerated the CAT time course.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ozonee0
- Outcome
- time coursee0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ozone accelerated the progress of its time course”
e1“CAT did not significantly respond to ozone treatment”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
Claim · model-written summary
Drought did not influence the time course of the estimated parameters.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Drought stresse0
- Outcome
- time course of any of the estimated parameterse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress did not influence the time course of any of the estimated parameters”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
Claim · model-written summary
Drought led to somewhat increased AsA levels.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Drought stresse0
- Outcome
- levels of AsAe0
- Direction
- increasede0
- Qualifier
- somewhate0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress did not influence the time course of any of the estimated parameters, but led to somewhat increased levels of AsA”
t0“Time course of oxidant stress biomarkers in flag leaves of wheat exposed to ozone and drought stress”
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See all 11 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.