Abstract
Wheat plants are very sensitive to high temperature stress during grain filling. Effects of heat priming applied to the first generation on tolerance of the successive generation to post-anthesis high temperature stress were investigated. Compared with the progeny of non-heat primed plants (NH), the progeny of heat-primed plants (PH) possessed higher grain yield, leaf photosynthesis and activities of antioxidant enzymes and lower cell membrane damage under high temperature stress. In the transcriptome profile, 1430 probes showed obvious difference in expression between PH and NH. These genes were related to signal transduction, transcription, energy, defense, and protein destination and storage, respectively. The gene encoding the lysine-specific histone demethylase 1 (LSD1) which was involved in histone demethylation related to epigenetic modification was up-regulated in the PH compared with NH. The proteome analysis indicated that the proteins involved in photosynthesis, energy production and protein destination and storage were up-regulated in the PH compared with NH. In short, thermos-tolerance was induced through heritable epigenetic alternation and signaling transduction, both processes further triggered prompt modifications of defense related responses in anti-oxidation, transcription, energy production, and protein destination and storage in the progeny of the primed plants under high temperature stress. It was concluded that trans-generation thermo-tolerance was induced by heat priming in the first generation, and this might be an effective measure to cope with severe high-temperature stresses during key growth stages in wheat production.
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Claims 8
Claim · model-written summary
Progeny of heat-primed plants had higher grain yield under high temperature stress.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- heat-primed plantse0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- non-heat primed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the progeny of non-heat primed plants (NH), the progeny of heat-primed plants (PH) possessed higher grain yield, leaf photosynthesis and activities of antioxidant enzymes and lower cell membrane damage under high temperature stress”
t0“Wheat”
Claim · model-written summary
Heat-primed progeny had higher leaf photosynthesis and antioxidant enzyme activity under high temperature stress.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- heat-primed plantse0
- Outcome
- leaf photosynthesis and activities of antioxidant enzymese0
- Direction
- highere0
- Comparator
- non-heat primed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the progeny of non-heat primed plants (NH), the progeny of heat-primed plants (PH) possessed higher grain yield, leaf photosynthesis and activities of antioxidant enzymes and lower cell membrane damage under high temperature stress”
t0“Wheat”
Claim · model-written summary
Heat-primed progeny had lower cell membrane damage under high temperature stress.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- heat primingt0
- Outcome
- cell membrane damagee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lower cell membrane damage under high temperature stress”
t0“Heat Priming Induces Trans-generational Tolerance to High Temperature Stress in Wheat”
Claim · model-written summary
Transcriptomes differed at 1430 probes between PH and NH.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- difference in expressione0
- Value
- 1430e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1430 probes showed obvious difference in expression between PH and NH”
t0“Wheat”
Claim · model-written summary
LSD1 was upregulated in PH relative to NH.
- Taxon
- WheatTriticum aestivumt0
- Gene
- lysine-specific histone demethylase 1 (LSD1)e0
- Outcome
- up-regulatede0
- Direction
- up-regulatede0
- Comparator
- NHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gene encoding the lysine-specific histone demethylase 1 (LSD1) which was involved in histone demethylation related to epigenetic modification was up-regulated in the PH compared with NH”
t0“Wheat”
Claim · model-written summary
Proteins involved in photosynthesis, energy production, and protein destination and storage were upregulated in PH.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- proteins involved in photosynthesis, energy production and protein destination and storagee0
- Direction
- up-regulatede0
- Comparator
- NHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proteins involved in photosynthesis, energy production and protein destination and storage were up-regulated in the PH compared with NH”
t0“Wheat”
Claim · model-written summary
Authors attribute inherited thermotolerance to epigenetic alteration and signaling transduction.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- thermos-tolerancee0
- Qualifier
- heritable epigenetic alternation and signaling transductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thermos-tolerance was induced through heritable epigenetic alternation and signaling transduction”
t0“Wheat”
Claim · model-written summary
Authors propose first-generation heat priming as a measure against high temperature stress in wheat production.
- Taxon
- wheatTriticum aestivume0
- Outcome
- heat priming in the first generatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“heat priming in the first generation, and this might be an effective measure to cope with severe high-temperature stresses during key growth stages in wheat production”
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