Abstract
The roots of rice seedlings were soaked in 10, 100 and 1000μmol/L H202 solutions for treatments at 28℃ and 8℃ respectively. The results showed that at 28℃, Fv/Fm, qP and φPSII in cold tolerant cultivars didn' t change significantly contrast with that in control, but qNP increased more, and Fv/Fm in cold sensitive cultivars kept stable similar to that of the control, qP and φPSII decreased, and qNP increased more. Moreover, it was indicated that at 8℃, the treatment with 10μmol/L H2O2 for 12h, the chlorophyll fluorescence parameters increased contrast with that in control, and qNP didn' t change significantly with different concentration treatments in cold tolerant rice cultivars. But in cold sensitive cultivars, all the treatments at 8℃ could make the chlorophyll fluorescence parameters decreased contrast with that of the control, and the change turned worse along with the longer treatment time and the higher treatment concentrations. All these results indicated that low temperature could make rice more sensitive to H2O2, but different H2O2 treatments in this paper affected less on photosynthetic capability, even more 100μmol/L H202 treatment at 8℃ could stimulate the cold tolerance to increase in cold tolerant cultivars. Probably it was the cold tolerant cultivars that could keep higher oxi-dase activity at low temperature.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 11
Claim · model-written summary
At 28℃, Fv/Fm, qP and φPSII did not change significantly in cold tolerant cultivars.
- Taxon
- Rice
Oryza sativat0 - Material
- cold tolerant cultivarse0
- Treatment
- 28℃e0
- Outcome
- Fv/Fm, qP and φPSIIe0
- Direction
- didn' t changee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 28℃, Fv/Fm, qP and φPSII in cold tolerant cultivars didn' t change significantly contrast with that in control”
t0“Rice”
Claim · model-written summary
At 28℃ Fv/Fm remained stable in cold sensitive cultivars.
- Taxon
- RiceOryza sativat0
- Material
- cold sensitive cultivarse0
- Outcome
- Fv/Fme0
- Direction
- stablee0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fv/Fm in cold sensitive cultivars kept stable similar to that of the control”
t0“Rice”
Claim · model-written summary
At 28℃ qP and φPSII decreased in cold sensitive cultivars.
- Taxon
- RiceOryza sativat0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“qP and φPSII decreased”
e1“Fv/Fm in cold sensitive cultivars kept stable similar to that of the control”
t0“Rice”
Claim · model-written summary
At 28℃ qNP increased in cold sensitive cultivars.
- Taxon
- RiceOryza sativat0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“qNP increased more. Moreover”
e1“Fv/Fm in cold sensitive cultivars kept stable similar to that of the control”
t0“Rice”
Claim · model-written summary
At 8℃, 10μmol/L H2O2 for 12h increased chlorophyll fluorescence parameters in cold tolerant rice.
- Taxon
- riceOryza sativae0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 8℃, the treatment with 10μmol/L H2O2 for 12h, the chlorophyll fluorescence parameters increased contrast with that in control”
e1“cold tolerant rice cultivars”
Claim · model-written summary
At 8℃ qNP did not change significantly under different concentrations in cold tolerant cultivars.
- Taxon
- riceOryza sativae0
- Material
- cold tolerant rice cultivarse0
- Treatment
- different concentration treatmentse0
- Outcome
- qNPe0
- Direction
- didn' t changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“qNP didn' t change significantly with different concentration treatments in cold tolerant rice cultivars”
Claim · model-written summary
At 8℃ all treatments decreased fluorescence in cold sensitive cultivars.
- Taxon
- RiceOryza sativat0
- Material
- cold sensitive cultivarse0
- Treatment
- all the treatments at 8℃e0
- Outcome
- chlorophyll fluorescence parameterse0
- Direction
- decreasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in cold sensitive cultivars, all the treatments at 8℃ could make the chlorophyll fluorescence parameters decreased contrast with that of the control”
t0“Rice”
Claim · model-written summary
Longer treatments and higher concentrations worsened the cold sensitive response.
- Taxon
- RiceOryza sativat0
- Treatment
- longer treatment time and the higher treatment concentrationse0
- Outcome
- the changee0
- Direction
- worsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the change turned worse along with the longer treatment time and the higher treatment concentrations”
t0“Rice”
Claim · model-written summary
Low temperature made rice more sensitive to H2O2.
- Taxon
- riceOryza sativae0
- Treatment
- low temperaturee0
- Outcome
- more sensitive to H2O2e0
- Direction
- more sensitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low temperature could make rice more sensitive to H2O2”
Claim · model-written summary
The authors infer that 100μmol/L H202 at 8℃ can increase cold tolerance in tolerant cultivars.
- Taxon
- RiceOryza sativat0
- Material
- cold tolerant cultivarse0
- Treatment
- 100μmol/L H202 treatment at 8℃e0
- Outcome
- cold tolerancee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100μmol/L H202 treatment at 8℃ could stimulate the cold tolerance to increase in cold tolerant cultivars”
t0“Rice”
Claim · model-written summary
Cold tolerant cultivars may maintain higher oxidase activity at low temperature.
- Taxon
- RiceOryza sativat0
- Material
- cold tolerant cultivarse0
- Outcome
- oxi-dase activitye0
- Direction
- highere0
- Qualifier
- at low temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Probably it was the cold tolerant cultivars that could keep higher oxi-dase activity at low temperature”
t0“Rice”
The same questions in other papers
hydrogen peroxide · physiology: photosynthesis · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
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.