Abstract
Hydrogen sulfide (H2S) is considered to be the third gaseous signaling molecule after NO and CO, and it plays an active role in regulating the physiological pro- cesses of plants and animals. In this work, rice cultivar 'IIyou 084' seedlings were treated with NaHS, which is a donor of H2S, for 10 days, and its effects on growth and physiology, including photosynthesis, photorespiration, chlorophyll fluorescence, and stomata, were investigated. The data revealed that 0.01 mM of H2S improved rice biomass and chlorophyll content, while higher concentra- tions of H2S had an adverse effect on these parameters. Photosynthetic rate, stomatal conductance, and ribulose- 1,5-bisphosphate carboxylase (EC 4.1.1.39) activity also increased under 0.01 mM H2S treatment. However, pho- tosynthetic oxygen evolution rate, photosynthetic electron transfer, and photochemical efficiency of PSII were not affected by H2S treatment. In addition, photosynthesis oxygen sensitivity, CO2 compensation point, and glycolate oxidase (EC 1.1.3.1) activity reduced by H2S treatment, and thus photorespiration was down-regulated. Under light, stomatal aperture and density increased by treatment with 0.01 mM H2S. On the basis of these results, it can be deduced that 0.01 mM of H2S treatment improved photo- synthesis in rice by increasing its stomatal aperture and density, which may result from reduced photorespiration.
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Claims 11
Claim · model-written summary
0.01 mM H2S improved rice biomass.
- Taxon
- rice
Oryza sativae0 - Treatment
- 0.01 mM of H2Se0
- Outcome
- rice biomasse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.01 mM of H2S improved rice biomass and chlorophyll content”
Claim · model-written summary
0.01 mM H2S improved rice chlorophyll content.
- Taxon
- riceOryza sativae0
- Treatment
- 0.01 mM of H2Se0
- Outcome
- chlorophyll contente0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.01 mM of H2S improved rice biomass and chlorophyll content”
Claim · model-written summary
Higher H2S concentrations adversely affected rice biomass and chlorophyll content.
- Taxon
- riceOryza sativat0
- Treatment
- higher concentra- tions of H2Se0
- Outcome
- these parameterse0
- Direction
- adverse effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher concentra- tions of H2S had an adverse effect on these parameters”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
Claim · model-written summary
Photosynthetic rate and stomatal conductance increased under 0.01 mM H2S.
- Taxon
- riceOryza sativat0
- Treatment
- 0.01 mM H2S treatmente0
- Outcome
- Photosynthetic rate, stomatal conductancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate, stomatal conductance, and ribulose- 1,5-bisphosphate carboxylase (EC 4.1.1.39) activity also increased under 0.01 mM H2S treatment”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
Claim · model-written summary
Ribulose-1,5-bisphosphate carboxylase activity increased under 0.01 mM H2S.
- Taxon
- riceOryza sativat0
- Treatment
- 0.01 mM H2S treatmente0
- Gene
- ribulose- 1,5-bisphosphate carboxylase (EC 4.1.1.39)e0
- Outcome
- ribulose- 1,5-bisphosphate carboxylase (EC 4.1.1.39) activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ribulose- 1,5-bisphosphate carboxylase (EC 4.1.1.39) activity also increased under 0.01 mM H2S treatment”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
Claim · model-written summary
H2S did not affect photosynthetic oxygen evolution, electron transfer, or PSII photochemical efficiency.
- Taxon
- riceOryza sativat0
- Treatment
- H2S treatmente0
- Outcome
- pho- tosynthetic oxygen evolution rate, photosynthetic electron transfer, and photochemical efficiency of PSIIe0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pho- tosynthetic oxygen evolution rate, photosynthetic electron transfer, and photochemical efficiency of PSII were not affected by H2S treatment”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
Claim · model-written summary
H2S reduced photosynthesis oxygen sensitivity and CO2 compensation point.
- Taxon
- riceOryza sativat0
- Treatment
- H2S treatmente0
- Outcome
- photosynthesis oxygen sensitivity, CO2 compensation pointe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis oxygen sensitivity, CO2 compensation point, and glycolate oxidase (EC 1.1.3.1) activity reduced by H2S treatment”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
Claim · model-written summary
H2S reduced glycolate oxidase activity.
- Taxon
- riceOryza sativat0
- Treatment
- H2S treatmente0
- Gene
- glycolate oxidase (EC 1.1.3.1)e0
- Outcome
- glycolate oxidase (EC 1.1.3.1) activitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glycolate oxidase (EC 1.1.3.1) activity reduced by H2S treatment”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
Claim · model-written summary
H2S down-regulated photorespiration.
- Taxon
- riceOryza sativat0
- Treatment
- H2Se1
- Outcome
- photorespiratione0
- Direction
- down-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photorespiration was down-regulated”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
e1“0.01 mM of H2S improved rice biomass and chlorophyll content”
Claim · model-written summary
Under light, 0.01 mM H2S increased stomatal aperture and density.
- Taxon
- riceOryza sativat0
- Treatment
- 0.01 mM H2Se0
- Outcome
- stomatal aperture and densitye0
- Direction
- increasede0
- Qualifier
- Under lighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under light, stomatal aperture and density increased by treatment with 0.01 mM H2S”
t0“Improvement of photosynthesis in rice (Oryza sativa L.) as a result of an increase in stomatal aperture and density by exogenous hydrogen sulfide treatment”
Claim · model-written summary
The authors inferred that 0.01 mM H2S improved rice photosynthesis through greater stomatal aperture and density, possibly following reduced photorespiration.
- Taxon
- riceOryza sativae0
- Treatment
- 0.01 mM of H2S treatmente0
- Outcome
- photo- synthesise0
- Qualifier
- increasing its stomatal aperture and density, which may result from reduced photorespiratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.01 mM of H2S treatment improved photo- synthesis in rice by increasing its stomatal aperture and density, which may result from reduced photorespiration”
The same questions in other papers
hydrogen sulfide · growth · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
3 papers more in this group
See all 7 papers →hydrogen sulfide · physiology: photosynthesis · Oryza sativa (rice)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 papers →hydrogen sulfide · physiology: pigments · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- 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.