Abstract
Abstract Background Abscisic acid (ABA) acts as a signaling hormone in plants against abiotic stress, but its function in energy homeostasis under heat stress is unclear. Results Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress. We found significantly higher tissue temperature, respiration rate, and ABA and H 2 O 2 contents in leaves as well as a lower transpiration rate and stomatal conductance in hts than WT plants. Additionally, increased expression of HSP71.1 and HSP24.1 as well as greater increases in carbohydrate content, ATP, NAD (H), and dry matter weight, were detected in WT than hts plants under heat stress. More importantly, exogenous ABA significantly decreased heat tolerance of hts plants, but clearly enhanced heat resistance of WT plants. The increases in carbohydrates, ATP, NAD (H), and heat shock proteins in WT plants were enhanced by ABA under heat stress, whereas these increases were reduced in hts plants. Conclusion It was concluded that ABA is a negative regulator of heat tolerance in hts plants with semi-rolled leaves by modulating energy homeostasis.
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Claims 13
Claim · model-written summary
Under heat stress, hts rice had higher tissue temperature and respiration rate in leaves than WT.
- Taxon
- rice
Oryza sativae0 - Material
- htse0
- Organ / stage
- leavese1
- Treatment
- heat stresse0
- Outcome
- tissue temperature, respiration ratee1
- Direction
- highere1
- Comparator
- WTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e1“We found significantly higher tissue temperature, respiration rate, and ABA and H 2 O 2 contents in leaves as well as a lower transpiration rate and stomatal conductance in hts than WT plants”
Claim · model-written summary
Under heat stress, hts rice had higher ABA and H2O2 contents in leaves than WT.
- Taxon
- riceOryza sativae0
- Material
- htse0
- Organ / stage
- leavese1
- Treatment
- heat stresse0
- Outcome
- ABA and H 2 O 2 contentse1
- Direction
- highere1
- Comparator
- WTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e1“We found significantly higher tissue temperature, respiration rate, and ABA and H 2 O 2 contents in leaves as well as a lower transpiration rate and stomatal conductance in hts than WT plants”
Claim · model-written summary
Under heat stress, hts rice had lower transpiration rate and stomatal conductance than WT.
- Taxon
- riceOryza sativae0
- Material
- htse0
- Treatment
- heat stresse0
- Outcome
- transpiration rate and stomatal conductancee1
- Direction
- lowere1
- Comparator
- WTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e1“We found significantly higher tissue temperature, respiration rate, and ABA and H 2 O 2 contents in leaves as well as a lower transpiration rate and stomatal conductance in hts than WT plants”
Claim · model-written summary
Under heat stress, expression of HSP71.1 and HSP24.1 was increased in WT rice compared with hts.
- Taxon
- riceOryza sativae0
- Material
- Nipponbaree0
- Treatment
- heat stresse0
- Gene
- HSP71.1 and HSP24.1e2
- Outcome
- expressione2
- Direction
- increasede2
- Comparator
- htse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e2“Additionally, increased expression of HSP71.1 and HSP24.1 as well as greater increases in carbohydrate content, ATP, NAD (H), and dry matter weight, were detected in WT than hts plants under heat stress”
Claim · model-written summary
Under heat stress, the increases in carbohydrate content, ATP and NAD(H) were greater in WT rice than in hts.
- Taxon
- riceOryza sativae0
- Material
- Nipponbaree0
- Treatment
- heat stresse0
- Outcome
- carbohydrate content, ATP, NAD (H)e2
- Direction
- greater increasese2
- Comparator
- htse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e2“Additionally, increased expression of HSP71.1 and HSP24.1 as well as greater increases in carbohydrate content, ATP, NAD (H), and dry matter weight, were detected in WT than hts plants under heat stress”
Claim · model-written summary
Under heat stress, the increase in dry matter weight was greater in WT rice than in hts.
- Taxon
- riceOryza sativae0
- Material
- Nipponbaree0
- Treatment
- heat stresse0
- Outcome
- dry matter weighte2
- Direction
- greater increasese2
- Comparator
- htse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e2“Additionally, increased expression of HSP71.1 and HSP24.1 as well as greater increases in carbohydrate content, ATP, NAD (H), and dry matter weight, were detected in WT than hts plants under heat stress”
Claim · model-written summary
Exogenous ABA significantly decreased heat tolerance of hts rice.
- Taxon
- riceOryza sativae0
- Material
- htse0
- Treatment
- exogenous ABAe3
- Outcome
- heat tolerancee3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e3“More importantly, exogenous ABA significantly decreased heat tolerance of hts plants, but clearly enhanced heat resistance of WT plants”
Claim · model-written summary
Exogenous ABA clearly enhanced heat resistance of WT rice.
- Taxon
- riceOryza sativae0
- Material
- Nipponbaree0
- Treatment
- exogenous ABAe3
- Outcome
- heat resistancee3
- Direction
- enhancede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e3“More importantly, exogenous ABA significantly decreased heat tolerance of hts plants, but clearly enhanced heat resistance of WT plants”
Claim · model-written summary
ABA enhanced the increases in carbohydrates, ATP and NAD(H) in WT rice under heat stress.
- Taxon
- riceOryza sativae0
- Material
- WTe4
- Treatment
- ABAe4
- Outcome
- carbohydrates, ATP, NAD (H)e4
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e4“The increases in carbohydrates, ATP, NAD (H), and heat shock proteins in WT plants were enhanced by ABA under heat stress”
Claim · model-written summary
ABA enhanced the heat shock protein increases in WT rice under heat stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e4“The increases in carbohydrates, ATP, NAD (H), and heat shock proteins in WT plants were enhanced by ABA under heat stress”
Claim · model-written summary
ABA reduced the increases in carbohydrates, ATP and NAD(H) in hts rice under heat stress.
- Taxon
- riceOryza sativae0
- Material
- htse0
- Treatment
- ABAe4
- Outcome
- carbohydrates, ATP, NAD (H)e4
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e4“The increases in carbohydrates, ATP, NAD (H), and heat shock proteins in WT plants were enhanced by ABA under heat stress”
e5“whereas these increases were reduced in hts plants”
Claim · model-written summary
ABA reduced the heat shock protein increases in hts rice under heat stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e4“The increases in carbohydrates, ATP, NAD (H), and heat shock proteins in WT plants were enhanced by ABA under heat stress”
e5“whereas these increases were reduced in hts plants”
Claim · model-written summary
ABA is a negative regulator of heat tolerance in hts rice, acting by modulating energy homeostasis.
- Taxon
- riceOryza sativae0
- Compound
- ABAe6
- Outcome
- heat tolerancee6
- Qualifier
- modulating energy homeostasise6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two rice genotypes, Nipponbare (wild-type, WT) with flat leaves and its mutant high temperature susceptibility ( hts ) plant with semi-rolled leaves, were subjected to heat stress”
e6“It was concluded that ABA is a negative regulator of heat tolerance in hts plants with semi-rolled leaves by modulating energy homeostasis”
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