Abstract
The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress. A heat hardening treatment given during the imbibition period induced the transient expression of 118, 90, 70 and 18 kDa heat shock proteins (HSPs). However, the hardening and paclobutrazol treatments did not enhance the thermotolerance of imbibed seeds or etiolated seedlings. By contrast, the hardening and paclobutrazol treatments enhanced the thermotolerance of light-grown seedlings. While, both hardened and unhardened control seedlings synthesized several HSPs during a high temperature stress period, these proteins were not synthesized by the paclobutrazol-treated, light-grown seedlings. Thus, HSP synthesis during heat shock may have been a manifestation of stress perception by the seedlings and may not have mediated the thermotolerance induced by the triazole treatments. Since differential thermotolerance was only apparent in light-grown seedlings, it is suggested that chloroplasts may be required for the expression of paclobutrazol- and hardening-induced thermoprotection. Additional evidence indicating that chloroplasts are an important site of injury during high temperature stress was obtained from chlorophyll fluorescence measurements.
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Claims 7
Claim · model-written summary
A heat hardening treatment during imbibition induced transient expression of 118, 90, 70 and 18 kDa heat shock proteins in wheat.
- Taxon
- wheat
Triticum aestivume0 - Material
- cv Fredericke0
- Treatment
- heat hardening treatment given during the imbibition periode1
- Outcome
- transient expression of 118, 90, 70 and 18 kDa heat shock proteinse1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress”
e1“A heat hardening treatment given during the imbibition period induced the transient expression of 118, 90, 70 and 18 kDa heat shock proteins (HSPs)”
Claim · model-written summary
Hardening and paclobutrazol treatments did not enhance thermotolerance of imbibed seeds or etiolated wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Material
- cv Fredericke0
- Organ / stage
- imbibed seeds or etiolated seedlingse2
- Treatment
- hardening and paclobutrazol treatmentse2
- Outcome
- thermotolerancee2
- Direction
- did not enhancee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress”
e2“However, the hardening and paclobutrazol treatments did not enhance the thermotolerance of imbibed seeds or etiolated seedlings”
Claim · model-written summary
Hardening and paclobutrazol treatments enhanced thermotolerance of light-grown wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Material
- cv Fredericke0
- Organ / stage
- light-grown seedlingse3
- Treatment
- hardening and paclobutrazol treatmentse3
- Outcome
- thermotolerancee3
- Direction
- enhancede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress”
e3“By contrast, the hardening and paclobutrazol treatments enhanced the thermotolerance of light-grown seedlings”
Claim · model-written summary
Paclobutrazol-treated light-grown wheat seedlings did not synthesize several HSPs during high temperature stress, unlike hardened and unhardened controls.
- Taxon
- wheatTriticum aestivume0
- Material
- cv Fredericke0
- Organ / stage
- light-grown seedlingse4
- Treatment
- paclobutrazole4
- Outcome
- several HSPse4
- Direction
- not synthesizede4
- Comparator
- hardened and unhardened control seedlingse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress”
e4“While, both hardened and unhardened control seedlings synthesized several HSPs during a high temperature stress period, these proteins were not synthesized by the paclobutrazol-treated, light-grown seedlings”
Claim · model-written summary
HSP synthesis during heat shock may not have mediated the thermotolerance induced by the triazole treatments.
- Taxon
- wheatTriticum aestivume0
- Outcome
- the thermotolerance induced by the triazole treatmentse5
- Qualifier
- HSP synthesis during heat shocke5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress”
e5“Thus, HSP synthesis during heat shock may have been a manifestation of stress perception by the seedlings and may not have mediated the thermotolerance induced by the triazole treatments”
Claim · model-written summary
Chloroplasts may be required for the expression of paclobutrazol- and hardening-induced thermoprotection in wheat.
- Taxon
- wheatTriticum aestivume0
- Outcome
- expression of paclobutrazol- and hardening-induced thermoprotectione6
- Qualifier
- chloroplastse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress”
e6“Since differential thermotolerance was only apparent in light-grown seedlings, it is suggested that chloroplasts may be required for the expression of paclobutrazol- and hardening-induced thermoprotection”
Claim · model-written summary
Chloroplasts are an important site of injury during high temperature stress in wheat, based on chlorophyll fluorescence measurements.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- chloroplastse7
- Treatment
- high temperature stresse7
- Outcome
- chloroplasts are an important site of injurye7
- Qualifier
- chlorophyll fluorescence measurementse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The present report describes the effects of paclobutrazol and heat hardening treatments on the protein synthesis patterns in imbibing and germinating wheat seedlings (Triticum aestivum L. cv Frederick) during heat stress”
e7“Additional evidence indicating that chloroplasts are an important site of injury during high temperature stress was obtained from chlorophyll fluorescence measurements”
The same questions in other papers
paclobutrazol · tolerance: abiotic · Triticum aestivum (wheat)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
in vitro · tolerance: abiotic · Triticum aestivum (wheat)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 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.