Abstract
The solution culture experiments were conducted using the Zn sensitive cultivar IR26 and the Zn tolerant cultivar IR8192 31 2 to study on the effect of bicarbonate on the root growth, root oxidizing power (ROP), accumulation of organic acids in the root cells, membrane permeability and superoxide dismutase (SOD) activity. The results showed that bicarbonate strongly depressed root growth and ROP of IR26, especially at low Zn concentration. In contrast, it only had little effect on that of IR8192 31 2; Bicarbonate increased the concentrations of malate and citrate in the roots of both cultivars, but to greater extent for IR26 than for IR8192 31 2. The results suggested that the inhibition effect of bicarbonate on root growth of the Zn sensitive cultivar might result from high accumulation of organic acids in the root cells. Bicarbonate decreased SOD activity of roots and leaves and increased membrane permeability of IR26 roots, but had less effect on that of roots of the IR8192 31 2. This might relate to Zn absorption of the Zn sensitive cultivar.
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Claims 8
Claim · model-written summary
Bicarbonate depressed root growth and root oxidizing power of the Zn-sensitive rice cultivar IR26, especially at low Zn.
- Taxon
- Rice
Oryza sativat0 - Material
- IR26e1
- Treatment
- bicarbonatee1
- Outcome
- root growth and ROPe1
- Direction
- depressede1
- Qualifier
- especially at low Zn concentratione1
- Setting
- solution culturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e0“The solution culture experiments were conducted using the Zn sensitive cultivar IR26 and the Zn tolerant cultivar IR8192 31 2”
e1“The results showed that bicarbonate strongly depressed root growth and ROP of IR26, especially at low Zn concentration”
Claim · model-written summary
Bicarbonate had little effect on root growth and root oxidizing power of the Zn-tolerant rice cultivar IR8192 31 2.
- Taxon
- RiceOryza sativat0
- Material
- IR8192 31 2e2
- Treatment
- bicarbonatee1
- Outcome
- root growth and ROPe1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e1“The results showed that bicarbonate strongly depressed root growth and ROP of IR26, especially at low Zn concentration”
e2“In contrast, it only had little effect on that of IR8192 31 2”
Claim · model-written summary
Bicarbonate increased malate and citrate concentrations in the roots of both rice cultivars, to a greater extent in IR26.
- Taxon
- RiceOryza sativat0
- Material
- IR26e3
- Organ / stage
- rootse3
- Treatment
- bicarbonatee3
- Outcome
- concentrations of malate and citratee3
- Direction
- increasede3
- Qualifier
- to greater extent for IR26 than for IR8192 31 2e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e3“Bicarbonate increased the concentrations of malate and citrate in the roots of both cultivars, but to greater extent for IR26 than for IR8192 31 2”
Claim · model-written summary
Bicarbonate decreased superoxide dismutase activity of rice roots and leaves.
- Taxon
- RiceOryza sativat0
- Organ / stage
- roots and leavese4
- Treatment
- bicarbonatee4
- Outcome
- SOD activitye4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e4“Bicarbonate decreased SOD activity of roots and leaves and increased membrane permeability of IR26 roots”
Claim · model-written summary
Bicarbonate increased membrane permeability of the roots of the Zn-sensitive rice cultivar IR26.
- Taxon
- RiceOryza sativat0
- Material
- IR26e4
- Organ / stage
- rootse4
- Treatment
- bicarbonatee4
- Outcome
- membrane permeabilitye4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e4“Bicarbonate decreased SOD activity of roots and leaves and increased membrane permeability of IR26 roots”
Claim · model-written summary
Bicarbonate had less effect on membrane permeability of the roots of IR8192 31 2 than of IR26.
- Taxon
- RiceOryza sativat0
- Material
- IR8192 31 2e4
- Organ / stage
- rootse4
- Treatment
- bicarbonatee4
- Outcome
- membrane permeabilitye4
- Qualifier
- had less effecte4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e4“Bicarbonate decreased SOD activity of roots and leaves and increased membrane permeability of IR26 roots, but had less effect on that of roots of the IR8192 31 2”
Claim · model-written summary
The inhibition of root growth of the Zn-sensitive rice cultivar might result from high accumulation of organic acids in root cells.
- Taxon
- RiceOryza sativat0
- Compound
- organic acidse5
- Outcome
- inhibition effect of bicarbonate on root growthe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e5“The results suggested that the inhibition effect of bicarbonate on root growth of the Zn sensitive cultivar might result from high accumulation of organic acids in the root cells”
Claim · model-written summary
The bicarbonate effect on the Zn-sensitive rice cultivar might relate to its Zn absorption.
- Taxon
- RiceOryza sativat0
- Material
- Zn sensitive cultivare6
- Outcome
- Zn absorptione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Physiological Response of Rice Cultivars”
e6“This might relate to Zn absorption of the Zn sensitive cultivar”
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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.