Abstract
Abstract Cells of two indica rice (Oryza sativa L.) varieties, one aluminum-tolerant (IAC3), and the other aluminum-sensitive (IR45), were grown in suspension culture in a medium with or without Al (0-800 µM), Si (0-2,000 µM), or Al and Si in combination as well as in R2 medium as control. The influence of Al or Si on cell growth was evaluated based on the growth of the cells in the treatment medium as well as in the R2 medium and compared with the effect on rice seedlings. Similar responses were observed for the cells and the seedlings; Al treatment resulted in a significant reduction of cell growth in both varieties, and the growth was reduced with the increase of the Al uptake by the cells. IAC3 was more tolerant to Al and it absorbed more Al than IR45. On the contrary, Si alone had almost no effect or exerted a negligible effect on the cell growth in both varieties and Si was hardly absorbed by the cells. There was a slight alleviative effect of Si on Al toxicity in the suspension cells of IR45, whereas, a considerable ameliorative effect in the seedlings. The content of total Al and of AI insoluble in citric acid in the cells were higher in the sole Al (800 µM) treatment than in the Al-Si combination treatment. This tendency was also observed in aluminon staining. The differences in the alleviative effects of Si and the uptake of Al and Si between the suspension cells and seedlings may have resulted from the presence of roots and morphological differences in the apoplastic tissues. Key Words: Al toxicitydry weight Oryza sativa siliconsuspension culture
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Claims 11
Claim · model-written summary
Al treatment significantly reduced cell growth in both rice varieties.
- Taxon
- rice
Oryza sativat0 - Material
- both varietiese0
- Treatment
- Al treatmente0
- Outcome
- cell growthe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Al treatment resulted in a significant reduction of cell growth in both varieties”
t0“Rice”
Claim · model-written summary
Rice cell growth declined as aluminum uptake increased.
- Taxon
- riceOryza sativat0
- Compound
- Al uptakee0
- Outcome
- growthe0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth was reduced with the increase of the Al uptake by the cells.”
t0“Rice”
Claim · model-written summary
IAC3 was more aluminum tolerant than IR45.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IAC3 was more tolerant to Al and it absorbed more Al than IR45.”
t0“Rice”
Claim · model-written summary
IAC3 absorbed more aluminum than IR45.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IAC3 was more tolerant to Al and it absorbed more Al than IR45.”
t0“Rice”
Claim · model-written summary
Silicon alone had almost no effect on cell growth in both rice varieties.
- Taxon
- riceOryza sativat0
- Treatment
- Si alonee0
- Outcome
- cell growthe0
- Direction
- almost no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si alone had almost no effect or exerted a negligible effect on the cell growth in both varieties”
t0“Rice”
Claim · model-written summary
Silicon was hardly absorbed by rice cells.
- Taxon
- riceOryza sativat0
- Organ / stage
- cellse0
- Outcome
- Si was hardly absorbede0
- Direction
- hardlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si was hardly absorbed by the cells.”
t0“Rice”
Claim · model-written summary
Silicon slightly alleviated aluminum toxicity in IR45 suspension cells.
- Taxon
- riceOryza sativat0
- Material
- IR45e0
- Organ / stage
- suspension cellse0
- Treatment
- Sie0
- Outcome
- Al toxicitye0
- Direction
- alleviativee0
- Qualifier
- slighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a slight alleviative effect of Si on Al toxicity in the suspension cells of IR45”
t0“Rice”
Claim · model-written summary
Silicon considerably alleviated aluminum toxicity in rice seedlings.
- Taxon
- riceOryza sativat0
- Organ / stage
- seedlingse0
- Treatment
- Sie0
- Outcome
- ameliorative effecte0
- Direction
- ameliorativee0
- Qualifier
- considerablee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas, a considerable ameliorative effect in the seedlings.”
t0“Rice”
Claim · model-written summary
Total aluminum content was higher under sole aluminum than combined aluminum and silicon treatment.
- Taxon
- riceOryza sativat0
- Treatment
- sole Al (800 µM) treatmente0
- Outcome
- content of total Ale0
- Direction
- highere0
- Comparator
- Al-Si combination treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of total Al and of AI insoluble in citric acid in the cells were higher in the sole Al (800 µM) treatment than in the Al-Si combination treatment.”
t0“Rice”
Claim · model-written summary
Citric acid insoluble aluminum was higher under sole aluminum than combined aluminum and silicon treatment.
- Taxon
- riceOryza sativat0
- Treatment
- sole Al (800 µM) treatmente0
- Outcome
- AI insoluble in citric acide0
- Direction
- highere0
- Comparator
- Al-Si combination treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of total Al and of AI insoluble in citric acid in the cells were higher in the sole Al (800 µM) treatment than in the Al-Si combination treatment.”
t0“Rice”
Claim · model-written summary
Aluminon staining showed the same aluminum pattern as content measurements.
- Taxon
- riceOryza sativat0
- Outcome
- aluminon staininge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This tendency was also observed in aluminon staining.”
t0“Rice”
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See all 171 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.