Abstract
The combined effects of heat and UV-B on the antioxidant system and photosynthetic pigments were investigated in the leaves of T. durum Desf. and Triticum aestivum L. The photosynthetic pigment content, in vitro evaluation of the antioxidant system activities including DPPH radical scavenging activity, and super oxide anion radical scavenging activity were determined. In addition, the antioxidant enzyme activities, such as superoxide dismutase (SOD) and guaiacol peroxidase (GPX), were determined. Heat and UV-B irradiation alone caused a significant decrease in the photosynthetic pigment content, radical scavenging activity and super oxide radical scavenging activity in the two studied plants. The antioxidant enzymes SOD and GPX were stimulated in response to UV and/or heat stresses. The elevation of enzyme activities was higher under heat than under UV-B, especially in T. aestivum. According to our findings, it can be concluded that combined heat and UV-B provided cross-tolerance; otherwise, single stress was found to aggravate the responses.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Heat and UV-B alone significantly decreased photosynthetic pigment content in wheat.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Heat and UV-B irradiation alonee1
- Outcome
- photosynthetic pigment contente1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Heat and UV-B irradiation alone caused a significant decrease in the photosynthetic pigment content”
t0“two species of wheat, Triticum durum Desf and Triticum aestivum L.”
Claim · model-written summary
Heat and UV-B alone significantly decreased radical scavenging and superoxide radical scavenging activity in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Heat and UV-B irradiation alonee2
- Outcome
- radical scavenging activity and super oxide radical scavenging activitye2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Heat and UV-B irradiation alone caused a significant decrease in the photosynthetic pigment content, radical scavenging activity and super oxide radical scavenging activity in the two studied plants”
t0“two species of wheat, Triticum durum Desf and Triticum aestivum L.”
Claim · model-written summary
SOD and GPX antioxidant enzymes were stimulated in wheat under UV and/or heat stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- UV and/or heat stressese3
- Gene
- SODe3
- Outcome
- antioxidant enzymes SOD and GPXe3
- Direction
- stimulatede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The antioxidant enzymes SOD and GPX were stimulated in response to UV and/or heat stresses”
t0“two species of wheat, Triticum durum Desf and Triticum aestivum L.”
Claim · model-written summary
The elevation of antioxidant enzyme activities was higher under heat than under UV-B, especially in T. aestivum.
- Taxon
- wheatTriticum aestivumt0
- Material
- T. aestivume4
- Treatment
- heate4
- Outcome
- elevation of enzyme activitiese4
- Direction
- highere4
- Comparator
- UV-Be4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The elevation of enzyme activities was higher under heat than under UV-B, especially in T. aestivum”
t0“two species of wheat, Triticum durum Desf and Triticum aestivum L.”
Claim · model-written summary
Combined heat and UV-B provided cross-tolerance in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- combined heat and UV-Be5
- Outcome
- cross-tolerancee5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“combined heat and UV-B provided cross-tolerance”
t0“two species of wheat, Triticum durum Desf and Triticum aestivum L.”
Claim · model-written summary
Single stress aggravated the responses in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- single stresse6
- Outcome
- the responsese6
- Direction
- aggravatee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“single stress was found to aggravate the responses”
t0“two species of wheat, Triticum durum Desf and Triticum aestivum L.”
The same questions in other papers
uv · physiology: photosynthesis · Triticum aestivum (wheat)Results differ
19 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- positive
19 papers more in this group
See all 23 papers →heat · quality: phytochemicals · Triticum aestivum (wheat)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
4 papers more in this group
See all 8 papers →uv · quality: phytochemicals · Triticum aestivum (wheat)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →heat · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results
72 papers in the same direction as this paper · 17 in the opposite direction
- positive
- positive
- positive
86 papers more in this group
See all 90 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.