Abstract
Abstract Four genotypes of Triticum aestivum L. and Triticum turgidum subsp . durum chosen according to their genetic background diversity were subjected to heat stress after anthesis. Membrane permeability, lipid peroxidation and fatty acids (C14:0, C16:0, C16:1 c , C16:1 t , C18:0, C18:1, C18:2 and C18:3) were quantified. The estimation of the quantum yield of non‐cyclic photosynthetic electron transport was used as well as a test system to further evaluate the implications on thylakoid functioning. It was found differences within bread and durum wheat species concerning the capability to cope with high temperatures at the stage of grain filling. The genotype Sever showed high thermal sensitivity concerning membrane lipid peroxidation and membrane permeability, as evaluated by the increased production of ethylene and MDA, as well as by the impact on TFA (at the middle term of grain filling). In the durum wheat genotypes, differences were also found, with TE 9306 displaying high membrane stability, with no increases on membrane permeability, MDA and ethylene content. In this way, the observed changes on TFA in this genotype might have constituted a mechanism to allow qualitative lipid changes, reflected in lower unsaturation level of membrane FAs which is a positive trait under high temperatures.
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Claims 5
Claim · model-written summary
Bread and durum wheat differed in heat tolerance during grain filling.
Verbatim
e0“It was found differences within bread and durum wheat species concerning the capability to cope with high temperatures at the stage of grain filling”
Claim · model-written summary
Sever showed high thermal sensitivity with increased ethylene and MDA production and membrane permeability.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- Severe0
- Treatment
- Heat Stresst0
- Outcome
- production of ethylene and MDAe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotype Sever showed high thermal sensitivity concerning membrane lipid peroxidation and membrane permeability, as evaluated by the increased production of ethylene and MDA”
t0“Wheat Cellular Membrane Thermotolerance Under Heat Stress”
Claim · model-written summary
Sever showed a heat-related change in total fatty acids at mid grain filling.
- Taxon
- WheatTriticum aestivumt0
- Material
- Severe0
- Outcome
- TFAe0
- Qualifier
- at the middle term of grain fillinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotype Sever showed high thermal sensitivity concerning membrane lipid peroxidation and membrane permeability, as evaluated by the increased production of ethylene and MDA, as well as by the impact on TFA (at the middle term of grain filling)”
t0“Wheat Cellular Membrane Thermotolerance Under Heat Stress”
Claim · model-written summary
TE 9306 showed high membrane stability without increases in permeability, MDA or ethylene content.
- Taxon
- WheatTriticum aestivumt0
- Material
- TE 9306e0
- Treatment
- Heat Stresst0
- Outcome
- membrane permeability, MDA and ethylene contente0
- Direction
- no increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TE 9306 displaying high membrane stability, with no increases on membrane permeability, MDA and ethylene content”
t0“Wheat Cellular Membrane Thermotolerance Under Heat Stress”
Claim · model-written summary
In TE 9306, changed total fatty acids may have enabled lower membrane fatty acid unsaturation.
- Taxon
- WheatTriticum aestivumt0
- Material
- TE 9306e0
- Outcome
- unsaturation level of membrane FAse0
- Direction
- lowere0
- Qualifier
- observed changes on TFAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TE 9306 displaying high membrane stability, with no increases on membrane permeability, MDA and ethylene content. In this way, the observed changes on TFA in this genotype might have constituted a mechanism to allow qualitative lipid changes, reflected in lower unsaturation level of membrane FAs”
t0“Wheat Cellular Membrane Thermotolerance Under Heat Stress”
The same questions in other papers
heat · physiology: oxidative · Triticum aestivum (wheat)Results differ
11 papers in the same direction as this paper · 31 in the opposite direction
- positive
- negative
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See all 43 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.