Abstract
Heat stress that occurs during the flowering stage severely decreases the rice (Oryza sativa L.) seed-setting rate. This damage can be reversed by abscisic acid (ABA), through effects on reactive oxygen species, carbohydrate metabolism, and heat shock proteins, but the exact role of trehalose and ATP in this process remains unclear. Two rice genotypes, namely, Zhefu802 (heat-resistant plant, a recurrent parent) and its near-isogenic line (faded green leaf, Fgl, heat-sensitive plant), were subjected to 38 °C heat stress after being sprayed with ABA or its biosynthetic inhibitor, fluridone (Flu), at the flowering stage. The results showed that exogenous ABA significantly increased the seed-setting rate of rice under heat stress, by 14.31 and 22.40% in Zhefu802 and Fgl, respectively, when compared with the H2O treatment. Similarly, exogenous ABA increased trehalose content, key enzyme activities of trehalose metabolism, ATP content, and F1Fo-ATPase activity. Importantly, the opposite results were observed in plants treated with Flu. Therefore, ABA may improve rice thermo-tolerance by affecting trehalose metabolism and ATP consumption.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Exogenous ABA increased the seed-setting rate of heat-stressed Zhefu802 rice by 14.31% compared with H2O.
- Taxon
- rice
Oryza sativae2 - Material
- Zhefu802e2
- Organ / stage
- flowering stagee1
- Treatment
- exogenous ABAe2
- Outcome
- seed-setting ratee2
- Direction
- increasede2
- Value
- 14.31e2
- Qualifier
- under heat stresse2
- Comparator
- H2O treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were subjected to 38 °C heat stress after being sprayed with ABA or its biosynthetic inhibitor, fluridone (Flu), at the flowering stage”
e2“exogenous ABA significantly increased the seed-setting rate of rice under heat stress, by 14.31 and 22.40% in Zhefu802 and Fgl, respectively, when compared with the H2O treatment”
Claim · model-written summary
Exogenous ABA increased the seed-setting rate of heat-stressed Fgl rice by 22.40% compared with H2O.
- Taxon
- riceOryza sativae2
- Material
- Fgle2
- Organ / stage
- flowering stagee1
- Treatment
- exogenous ABAe2
- Outcome
- seed-setting ratee2
- Direction
- increasede2
- Value
- 22.40%e2
- Qualifier
- under heat stresse2
- Comparator
- H2O treatmente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were subjected to 38 °C heat stress after being sprayed with ABA or its biosynthetic inhibitor, fluridone (Flu), at the flowering stage”
e2“exogenous ABA significantly increased the seed-setting rate of rice under heat stress, by 14.31 and 22.40% in Zhefu802 and Fgl, respectively, when compared with the H2O treatment”
Claim · model-written summary
Exogenous ABA increased trehalose content and key enzyme activities of trehalose metabolism in rice.
- Taxon
- riceOryza sativae2
- Treatment
- exogenous ABAe3
- Outcome
- trehalose content, key enzyme activities of trehalose metabolisme3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“exogenous ABA significantly increased the seed-setting rate of rice under heat stress, by 14.31 and 22.40% in Zhefu802 and Fgl, respectively, when compared with the H2O treatment”
e3“exogenous ABA increased trehalose content, key enzyme activities of trehalose metabolism, ATP content, and F1Fo-ATPase activity”
Claim · model-written summary
Exogenous ABA increased ATP content and F1Fo-ATPase activity in rice.
- Taxon
- riceOryza sativae2
- Treatment
- exogenous ABAe3
- Outcome
- ATP content, and F1Fo-ATPase activitye3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“exogenous ABA significantly increased the seed-setting rate of rice under heat stress, by 14.31 and 22.40% in Zhefu802 and Fgl, respectively, when compared with the H2O treatment”
e3“exogenous ABA increased trehalose content, key enzyme activities of trehalose metabolism, ATP content, and F1Fo-ATPase activity”
Claim · model-written summary
Fluridone (Flu) treatment produced results opposite to those of ABA in rice.
- Taxon
- riceOryza sativae2
- Treatment
- Flue4
- Outcome
- resultse4
- Direction
- oppositee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Importantly, the opposite results were observed in plants treated with Flu”
e2“exogenous ABA significantly increased the seed-setting rate of rice under heat stress, by 14.31 and 22.40% in Zhefu802 and Fgl, respectively, when compared with the H2O treatment”
Claim · model-written summary
ABA may improve rice thermo-tolerance by affecting trehalose metabolism and ATP consumption.
- Taxon
- riceOryza sativae5
- Compound
- trehalosee5
- Outcome
- thermo-tolerancee5
- Qualifier
- by affecting trehalose metabolism and ATP consumptione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“ABA may improve rice thermo-tolerance by affecting trehalose metabolism and ATP consumption”
The same questions in other papers
(+)-abscisic acid · yield · Oryza sativa (rice)Results differ
21 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- negative
22 papers more in this group
See all 26 papers →(+)-abscisic acid · molecular: metabolites · Oryza sativa (rice)Positive and negative results
16 papers in the same direction as this paper · 8 in the opposite direction
- positive
- negative
- no effect
21 papers more in this group
See all 25 papers →(+)-abscisic acid · soil: biology · Oryza sativa (rice)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.