Abstract
Abstract. Wheat ( Triticum aestivum L. var. TAM‐W101) leaf segments exhibited an acquired protection against metal toxicity following exposure of the seedlings to heat shock temperatures in the dark. The acquired protection of the leaf segments to cadmium was 400‐fold greater than leaf segments from seedlings kept at 25°C and exhibited the greatest change in protection of the five metals tested. Increased protection against aluminium and iron toxicity was also detected in the leaf segments from heat shocked seedlings. The concentration of aluminium at which a 50% loss of 2,3,5‐triphenyltetrazolium chloride reduction occurred was 5.5 mol m −3 in control leaf segments and 20 mol m −3 in the leaf segments from heat shocked seedlings. The 50% loss of 2,3,5‐triphenyltetrazolium chloride reduction in the leaf segments from heal shocked seedlings was four‐fold higher for iron. A small, yet reproducible change in the 2,3,5‐triphenyltetrazolium chloride reduction was observed for copper and no change in reduction was observed for zinc treatments in the leaf segments from heat shocked seedlings. These data indicate that exposure of wheat seedlings to heat shock temperatures results in the acquisition of protection against metal toxicity to otherwise lethal concentrations of aluminium, cadmium, and iron.
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Claims 7
Claim · model-written summary
Heat shock increased cadmium protection 400-fold over seedlings at 25°C.
- Taxon
- Wheat
Triticum aestivumt0 - Organ / stage
- leaf segmentse0
- Treatment
- heat shock temperaturese1
- Outcome
- protection of the leaf segments to cadmiume0
- Direction
- greatere0
- Value
- 400‐folde0
- Comparator
- seedlings kept at 25°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The acquired protection of the leaf segments to cadmium was 400‐fold greater than leaf segments from seedlings kept at 25°C”
e1“Wheat ( Triticum aestivum L. var. TAM‐W101) leaf segments exhibited an acquired protection against metal toxicity following exposure of the seedlings to heat shock temperatures in the dark”
t0“wheat”
Claim · model-written summary
Heat shock increased protection against aluminium toxicity.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- leaf segmentse0
- Treatment
- heat shocked seedlingse0
- Outcome
- protection against aluminiume0
- Direction
- Increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased protection against aluminium and iron toxicity was also detected in the leaf segments from heat shocked seedlings”
t0“wheat”
Claim · model-written summary
Heat shock increased protection against iron toxicity.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- leaf segmentse0
- Treatment
- heat shocked seedlingse0
- Outcome
- protection against aluminium and iron toxicitye0
- Direction
- Increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased protection against aluminium and iron toxicity was also detected in the leaf segments from heat shocked seedlings”
t0“wheat”
Claim · model-written summary
The aluminium concentration causing 50% loss of reduction rose from 5.5 to 20 mol m−3 after heat shock.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- heat shocked seedlingse0
- Outcome
- concentration of aluminium at which a 50% loss of 2,3,5‐triphenyltetrazolium chloride reduction occurrede0
- Direction
- increaseinferrede0
- Value
- 20 mol m −3e0
- Qualifier
- 5.5 mol m −3e0
- Comparator
- control leaf segmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of aluminium at which a 50% loss of 2,3,5‐triphenyltetrazolium chloride reduction occurred was 5.5 mol m −3 in control leaf segments and 20 mol m −3 in the leaf segments from heat shocked seedlings”
t0“wheat”
Claim · model-written summary
The iron concentration causing 50% loss of reduction was fourfold higher after heat shock.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- leaf segmentse0
- Treatment
- heal shocked seedlingse0
- Outcome
- 50% loss of 2,3,5‐triphenyltetrazolium chloride reductione0
- Direction
- highere0
- Value
- four‐folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 50% loss of 2,3,5‐triphenyltetrazolium chloride reduction in the leaf segments from heal shocked seedlings was four‐fold higher for iron”
t0“wheat”
Claim · model-written summary
Copper treatment produced a small reproducible change in reduction after heat shock.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- coppere0
- Outcome
- 2,3,5‐triphenyltetrazolium chloride reductione0
- Qualifier
- small, yet reproducible changee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A small, yet reproducible change in the 2,3,5‐triphenyltetrazolium chloride reduction was observed for copper”
t0“wheat”
Claim · model-written summary
Zinc treatment produced no change in reduction after heat shock.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- leaf segmentse0
- Treatment
- zinc treatmentse0
- Outcome
- reductione0
- Direction
- no changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no change in reduction was observed for zinc treatments in the leaf segments from heat shocked seedlings”
t0“wheat”
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See all 20 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.