Abstract
Seed treatment of thermotolerant and sensitive cultivars of wheat ( Triticum aestivum L. cv. Frederick and Glenlea, respectively) with uniconazole reduced shoot and increased root fresh and dry weights. When subjected to 48°C for 6 h, treated seedlings had lower leaf‐temperatures and overall higher rates of evapotranspiration. Percent survival 11 days after high temperature incubation in untreated seedlings was 53% in Frederick and 30% in Glenlea, whereas in uniconazole‐treated seedlings it was 94% and 80%, respectively. Transpiration resistance markedly increased in the control cultivars after 4 h of high‐temperature incubation, but remained relatively unchanged in the treated cultivars. The increased root to shoot ratio exhibited in treated plants may have alleviated guard cell stress, even under high evaporative demand. Chlorophyll fluorescence measurements on leaves of heat‐stressed seedlings indicated that increased photosynthetic metabolism in treated seedlings was correlated with lower leaf temperatures. High‐temperature stress resulted in a dramatic decline in pigments and proteins in thylakoid extracts of control seedlings but not in extracts from treated seedlings. Integrity of thylakoid pigment protein complexes, as illustrated by reduced relative amounts of free pigment, was maintained after exposure to high temperatures in treated seedlings. Furthermore, the treated Glenlea seedlings displayed a reduction in the monomeric form of Sight‐harvesting chlorophyll protein II (LHCP II) compared to control and Frederick seedlings. The heat‐tolerant Frederick cultivar showed a greater protective effect from uniconazole treatment than the sensitive Glenlea cultivar. Uniconazole treatment did not affect heat‐shock protein (HSP) synthesis in mesocotyl tissue.
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Claims 15
Claim · model-written summary
Uniconazole reduced shoot fresh and dry weights.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- uniconazolee0
- Outcome
- shoote0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment of thermotolerant and sensitive cultivars of wheat ( Triticum aestivum L. cv. Frederick and Glenlea, respectively) with uniconazole reduced shoot and increased root fresh and dry weights”
Claim · model-written summary
Uniconazole increased root fresh and dry weights.
- Taxon
- wheatTriticum aestivume0
- Treatment
- uniconazolee0
- Outcome
- root fresh and dry weightse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment of thermotolerant and sensitive cultivars of wheat ( Triticum aestivum L. cv. Frederick and Glenlea, respectively) with uniconazole reduced shoot and increased root fresh and dry weights”
Claim · model-written summary
Treated seedlings had lower leaf temperatures after heat exposure.
- Taxon
- wheatTriticum aestivume1
- Treatment
- treated seedlingse0
- Outcome
- leaf‐temperaturese0
- Direction
- lowere0
- Qualifier
- 48°C for 6 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When subjected to 48°C for 6 h, treated seedlings had lower leaf‐temperatures and overall higher rates of evapotranspiration”
e1“cultivars of wheat”
Claim · model-written summary
Treated seedlings had higher evapotranspiration after heat exposure.
- Taxon
- wheatTriticum aestivume1
- Treatment
- treated seedlingse0
- Outcome
- rates of evapotranspiratione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When subjected to 48°C for 6 h, treated seedlings had lower leaf‐temperatures and overall higher rates of evapotranspiration”
e1“cultivars of wheat”
Claim · model-written summary
Frederick survival was 94% with uniconazole versus 53% untreated.
- Taxon
- wheatTriticum aestivume1
- Material
- Fredericke0
- Treatment
- uniconazole‐treatede0
- Outcome
- Percent survivale0
- Direction
- higherinferrede0
- Value
- 94%e0
- Qualifier
- 53%e0
- Comparator
- untreated seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent survival 11 days after high temperature incubation in untreated seedlings was 53% in Frederick and 30% in Glenlea, whereas in uniconazole‐treated seedlings it was 94% and 80%, respectively”
e1“cultivars of wheat”
Claim · model-written summary
Glenlea survival was 80% with uniconazole versus 30% untreated.
- Taxon
- wheatTriticum aestivume1
- Material
- Glenleae0
- Treatment
- uniconazole‐treatede0
- Outcome
- Percent survivale0
- Direction
- higherinferrede0
- Value
- 80%e0
- Qualifier
- 30%e0
- Comparator
- untreated seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent survival 11 days after high temperature incubation in untreated seedlings was 53% in Frederick and 30% in Glenlea, whereas in uniconazole‐treated seedlings it was 94% and 80%, respectively”
e1“cultivars of wheat”
Claim · model-written summary
High heat increased transpiration resistance in controls.
- Taxon
- wheatTriticum aestivume1
- Material
- control cultivarse0
- Outcome
- Transpiration resistancee0
- Direction
- increasede0
- Qualifier
- 4 h of high‐temperature incubatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transpiration resistance markedly increased in the control cultivars after 4 h of high‐temperature incubation”
e1“cultivars of wheat”
Claim · model-written summary
Transpiration resistance remained relatively unchanged in treated cultivars.
- Taxon
- wheatTriticum aestivume2
- Treatment
- treated cultivarse0
- Outcome
- Transpiration resistancee1
- Direction
- relatively unchangede0
- Comparator
- control cultivarse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but remained relatively unchanged in the treated cultivars”
e1“Transpiration resistance markedly increased in the control cultivars”
e2“cultivars of wheat”
Claim · model-written summary
Treated seedlings had greater photosynthetic metabolism correlated with lower leaf temperatures.
- Taxon
- wheatTriticum aestivume1
- Outcome
- photosynthetic metabolisme0
- Direction
- increasede0
- Comparator
- lower leaf temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased photosynthetic metabolism in treated seedlings was correlated with lower leaf temperatures”
e1“cultivars of wheat”
Claim · model-written summary
Heat sharply reduced thylakoid pigments and proteins in controls.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- thylakoid extractse0
- Treatment
- High‐temperature stresse0
- Outcome
- pigments and proteinse0
- Direction
- dramatic declinee0
- Comparator
- control seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High‐temperature stress resulted in a dramatic decline in pigments and proteins in thylakoid extracts of control seedlings”
e1“cultivars of wheat”
Claim · model-written summary
Heat did not produce the same pigment and protein decline in treated seedlings.
- Taxon
- wheatTriticum aestivume2
- Treatment
- treated seedlingse0
- Outcome
- pigments and proteinse1
- Direction
- no_changeinferrede0
- Comparator
- control seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not in extracts from treated seedlings”
e1“dramatic decline in pigments and proteins in thylakoid extracts of control seedlings”
e2“cultivars of wheat”
Claim · model-written summary
Treated seedlings maintained thylakoid pigment protein complex integrity after heat.
- Taxon
- wheatTriticum aestivume1
- Outcome
- Integrity of thylakoid pigment protein complexese0
- Qualifier
- after exposure to high temperaturese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Integrity of thylakoid pigment protein complexes, as illustrated by reduced relative amounts of free pigment, was maintained after exposure to high temperatures in treated seedlings”
e1“cultivars of wheat”
Claim · model-written summary
Treated Glenlea showed less monomeric LHCP II than control and Frederick.
- Taxon
- wheatTriticum aestivume1
- Material
- Glenleae0
- Treatment
- treated Glenlea seedlingse0
- Gene
- Sight‐harvesting chlorophyll protein II (LHCP II)e0
- Outcome
- monomeric forme0
- Direction
- reductione0
- Comparator
- control and Frederick seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treated Glenlea seedlings displayed a reduction in the monomeric form of Sight‐harvesting chlorophyll protein II (LHCP II) compared to control and Frederick seedlings”
e1“cultivars of wheat”
Claim · model-written summary
Frederick gained greater heat protection from uniconazole than Glenlea.
- Taxon
- wheatTriticum aestivume1
- Material
- Fredericke0
- Treatment
- uniconazole treatmente0
- Outcome
- protective effecte0
- Direction
- greatere0
- Comparator
- Glenleae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The heat‐tolerant Frederick cultivar showed a greater protective effect from uniconazole treatment than the sensitive Glenlea cultivar”
e1“cultivars of wheat”
Claim · model-written summary
Uniconazole did not alter HSP synthesis in mesocotyl tissue.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- mesocotyl tissuee0
- Treatment
- Uniconazole treatmente0
- Outcome
- heat‐shock protein (HSP) synthesise0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uniconazole treatment did not affect heat‐shock protein (HSP) synthesis in mesocotyl tissue”
e1“cultivars of wheat”
The same questions in other papers
uniconazole · quality: protein · Triticum aestivum (wheat)Positive and negative results
1 in the opposite direction
- positive
heat · physiology: pigments · Triticum aestivum (wheat)Results differ
36 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
41 papers more in this group
See all 45 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.