Abstract
Abstract Saline stress has been identified as the primary factor inhibiting rice seedling growth, which represents a complex abiotic stress process. Most plant hormones have been shown to alleviate the plant damage caused by salt stress. The effects of synthetic strigolactone (GR24) on Jinongda 667 rice seedlings treated with 200 mM NaCl were studied. Photosynthesis and its related physiological characteristics were analyzed in salt-stressed rice seedlings treated with GR24. NaCL stress inhibited the growth of the rice, including plant height and root length, by approximately 14% and 40%, respectively. Compared to the control check group (CK), the adverse effects of salt stress on the growth status, leaf photosynthesis, and physiological/biochemical indices in the rice seedlings were alleviated in the GR24 treatment group. With increases in the GR24 concentration, the plant height and root length of the seedlings increased. The plant height in the groups treated with 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +1 μM GR24 (T4) and 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +5 μM GR24 (T5) were significantly different than the 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl group (T1) (P < 0.05), and there were significant differences between the T5 and T1 groups in root length (P < 0.05).The chlorophyll content in the rice seedling leaves was significantly different between the T1 group and all other groups (P < 0.05). The net photosynthetic rate of the T1 group was not significantly different from the T2 group (P > 0.05). The transpiration rate, stomatal conductance, and intercellular CO 2 concentrations showed the same trends as the net photosynthetic rate. The MAD, POD, and SOD activities were significantly increased by 68%, 60%, 14%, respectively, compared to the CK group (P < 0.01). When the GR24 concentration was 1 μM, the rice seedlings were resistant to the adverse effects of high salt stress. Therefore, the addition of proper concentrations of GR24 could improve the rice yield in saline-alkali land.
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Claims 15
Claim · model-written summary
NaCl stress reduced rice plant height by about 14%.
- Taxon
- rice
Oryza sativae0 - Treatment
- NaCL stresse0
- Outcome
- plant heighte0
- Direction
- inhibitede0
- Value
- approximately 14%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCL stress inhibited the growth of the rice, including plant height and root length, by approximately 14% and 40%, respectively.”
Claim · model-written summary
NaCl stress reduced rice root length by about 40%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCL stress inhibited the growth of the rice, including plant height and root length, by approximately 14% and 40%, respectively.”
Claim · model-written summary
GR24 alleviated adverse salt effects on rice seedling growth status, leaf photosynthesis and physiological indices relative to CK.
- Taxon
- rice seedlingsOryza sativae0
- Treatment
- GR24 treatment groupe0
- Outcome
- growth status, leaf photosynthesis, and physiological/biochemical indicese0
- Direction
- alleviatede0
- Comparator
- control check group (CK)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the control check group (CK), the adverse effects of salt stress on the growth status, leaf photosynthesis, and physiological/biochemical indices in the rice seedlings were alleviated in the GR24 treatment group.”
Claim · model-written summary
Rice seedling plant height and root length increased as GR24 concentration rose.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- GR24 concentratione0
- Outcome
- plant height and root lengthe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increases in the GR24 concentration, the plant height and root length of the seedlings increased.”
t0“rice seedlings”
Claim · model-written summary
Plant height differed significantly for T4 versus T1.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +1 μM GR24e0
- Outcome
- plant heighte0
- Value
- P < 0.05e0
- Comparator
- 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl group (T1)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant height in the groups treated with 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +1 μM GR24 (T4) and 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +5 μM GR24 (T5) were significantly different than the 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl group (T1) (P < 0.05)”
t0“rice seedlings”
Claim · model-written summary
Plant height differed significantly for T5 versus T1.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +5 μM GR24e0
- Outcome
- plant heighte0
- Value
- P < 0.05e0
- Comparator
- 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl group (T1)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant height in the groups treated with 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +1 μM GR24 (T4) and 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl +5 μM GR24 (T5) were significantly different than the 1/2 Hoagland’s complete nutrient solution + 200 mM NaCl group (T1) (P < 0.05)”
t0“rice seedlings”
Claim · model-written summary
Root length differed significantly between T5 and T1.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were significant differences between the T5 and T1 groups in root length (P < 0.05)”
t0“rice seedlings”
Claim · model-written summary
Leaf chlorophyll content differed significantly between T1 and all other groups.
- Taxon
- riceOryza sativae0
- Organ / stage
- seedling leavese0
- Outcome
- chlorophyll contente0
- Value
- P < 0.05e0
- Comparator
- all other groupse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chlorophyll content in the rice seedling leaves was significantly different between the T1 group and all other groups (P < 0.05)”
Claim · model-written summary
Net photosynthetic rate did not differ significantly between T1 and T2.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- T1 groupe0
- Outcome
- net photosynthetic ratee0
- Value
- P > 0.05e0
- Comparator
- T2 groupe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net photosynthetic rate of the T1 group was not significantly different from the T2 group (P > 0.05)”
t0“rice seedlings”
Claim · model-written summary
Transpiration rate, stomatal conductance and intercellular CO 2 concentrations followed the net photosynthetic rate trend.
- Taxon
- rice seedlingsOryza sativat0
- Outcome
- transpiration rate, stomatal conductance, and intercellular CO 2 concentrationse0
- Qualifier
- same trends as the net photosynthetic ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transpiration rate, stomatal conductance, and intercellular CO 2 concentrations showed the same trends as the net photosynthetic rate.”
t0“rice seedlings”
Claim · model-written summary
MAD activity increased by 68% relative to CK.
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MAD, POD, and SOD activities were significantly increased by 68%, 60%, 14%, respectively, compared to the CK group (P < 0.01)”
t0“rice seedlings”
Claim · model-written summary
POD activity increased by 60% relative to CK.
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MAD, POD, and SOD activities were significantly increased by 68%, 60%, 14%, respectively, compared to the CK group (P < 0.01)”
t0“rice seedlings”
Claim · model-written summary
SOD activity increased by 14% relative to CK.
- Taxon
- rice seedlingsOryza sativat0
- Outcome
- SOD activitiese0
- Direction
- increasede0
- Value
- 14%e0
- Comparator
- CK groupe0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MAD, POD, and SOD activities were significantly increased by 68%, 60%, 14%, respectively, compared to the CK group (P < 0.01)”
t0“rice seedlings”
Claim · model-written summary
At 1 μM GR24, rice seedlings resisted adverse high-salt effects.
- Taxon
- rice seedlingsOryza sativae0
- Treatment
- GR24 concentration was 1 μMe0
- Outcome
- resistant to the adverse effects of high salt stresse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the GR24 concentration was 1 μM, the rice seedlings were resistant to the adverse effects of high salt stress.”
Claim · model-written summary
The authors propose adding suitable GR24 concentrations to improve rice yield on saline-alkali land.
- Taxon
- riceOryza sativae0
- Treatment
- proper concentrations of GR24e0
- Outcome
- addition of proper concentrations of GR24 could improve the rice yield in saline-alkali lande0
- Setting
- saline-alkali lande0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of proper concentrations of GR24 could improve the rice yield in saline-alkali land”
The same questions in other papers
salinity · growth · Oryza sativa (rice)Positive and negative results
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