Abstract
This study was conducted to develop the salt tolerance of rice by exogenous application of magnesium sulfate supplement (MgSO4). The salinization was carried out on 7-day-old rice seedlings including BC15 (salinity tolerant) and DT84DB (salinity susceptible) varieties with 0.5 mM MgSO4. The exogenous application of MgSO4 significantly improves the growth of seedlings of both varieties. In addition, antioxidant activities increase in line with the raise of total phenolic and total flavonoid contents. Remarkably, the contents of momilactone B (MB) and phenolic compounds including tricin, ρ-coumaric, salicylic, cinnamic, benzoic, and ferulic acids simultaneously rise in both varieties treated by salinity and 0.5 mM MgSO4. Interestingly, MB was not found in the salt-treated samples but presents with considerable contents in the salt and MgSO4-treated cultivars. The findings imply that MgSO4 may significantly improve the salt tolerance of rice seedlings through the enhancement of secondary metabolic synthesis pathways, of which phenolic acids and momilactone B may play a crucial role in the response of rice to salt stress. In contrast, momilactone A (MA) did not show any contribution in salinity tolerance of examined rice cultivars at the early seedling stage. Further investigations on the effect of MgSO4 exogenous application in improving salinity tolerance of various rice varieties at other growing stages should be carried out.
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Claims 7
Claim · model-written summary
Magnesium sulfate significantly improved growth of seedlings of both rice varieties.
- Taxon
- Rice
Oryza sativat0 - Treatment
- MgSO4e0
- Outcome
- growth of seedlingse0
- Direction
- improvese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Seedlings”
e0“The exogenous application of MgSO4 significantly improves the growth of seedlings of both varieties.”
Claim · model-written summary
Antioxidant activities increased with total phenolic and flavonoid contents.
- Taxon
- RiceOryza sativat0
- Compound
- total phenolic and total flavonoid contentse0
- Outcome
- antioxidant activitiese0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Seedlings”
e0“antioxidant activities increase in line with the raise of total phenolic and total flavonoid contents.”
Claim · model-written summary
Momilactone B content rose in both varieties treated with salinity and magnesium sulfate.
- Taxon
- RiceOryza sativat0
- Treatment
- salinity and 0.5 mM MgSO4e0
- Outcome
- contents of momilactone B (MB)e0
- Direction
- risee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Seedlings”
e0“the contents of momilactone B (MB) and phenolic compounds including tricin, ρ-coumaric, salicylic, cinnamic, benzoic, and ferulic acids simultaneously rise in both varieties treated by salinity and 0.5 mM MgSO4.”
Claim · model-written summary
Tricin and the listed phenolic acids rose in both varieties under salinity plus magnesium sulfate.
- Taxon
- RiceOryza sativat0
- Treatment
- salinity and 0.5 mM MgSO4e0
- Outcome
- phenolic compounds including tricin, ρ-coumaric, salicylic, cinnamic, benzoic, and ferulic acidse0
- Direction
- risee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Seedlings”
e0“phenolic compounds including tricin, ρ-coumaric, salicylic, cinnamic, benzoic, and ferulic acids simultaneously rise in both varieties treated by salinity and 0.5 mM MgSO4.”
Claim · model-written summary
Momilactone B was absent under salt alone but present with salt and magnesium sulfate.
- Taxon
- RiceOryza sativat0
- Outcome
- MB was not found in the salt-treated samples but presents with considerable contents in the salt and MgSO4-treated cultivarse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Seedlings”
e0“MB was not found in the salt-treated samples but presents with considerable contents in the salt and MgSO4-treated cultivars.”
Claim · model-written summary
The authors infer that magnesium sulfate may improve salt tolerance through secondary metabolism involving phenolic acids and momilactone B.
- Taxon
- RiceOryza sativat0
- Treatment
- MgSO4e0
- Outcome
- salt tolerance of rice seedlingse0
- Qualifier
- enhancement of secondary metabolic synthesis pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Seedlings”
e0“MgSO4 may significantly improve the salt tolerance of rice seedlings through the enhancement of secondary metabolic synthesis pathways, of which phenolic acids and momilactone B may play a crucial role”
Claim · model-written summary
Momilactone A showed no contribution to salinity tolerance at the early seedling stage.
- Taxon
- RiceOryza sativat0
- Organ / stage
- early seedling stagee0
- Compound
- momilactone A (MA)e0
- Outcome
- salinity tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Seedlings”
e0“momilactone A (MA) did not show any contribution in salinity tolerance of examined rice cultivars at the early seedling stage.”
The same questions in other papers
magnesium sulfate · growth · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
2 papers more in this group
See all 6 papers →magnesium sulfate · quality: phytochemicals · 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.