Abstract
We investigated the effect of partial submergence on internode elongation in a Bangladesh variety of floating or deep water rice (Oryza sativa L., cv. Habiganj Aman II). In plants which were at least 21 days old, 7 days of submergence led to a 3- to 5-fold increase in internodal length. During submergence, the ethylene concentration in the internodes increased from about 0.02 to 1 microliters per liter. Treatment of nonsubmerged plants with ethylene also stimulated internode elongation. When ethylene synthesis in partially submerged plants was blocked with aminooxyacetic acid and aminoethoxyvinylglycine, internode elongation was inhibited. This growth inhibition was reversed when ethylene biosynthesis was restored with 1-aminocyclopropane-1-carboxylic acid (ACC). Radio-labeling studies showed that ethylene in floating rice was synthesized from methionine via ACC. Internodal tissue from submerged plants had a much higher capacity to form ethylene than did internodal tissue from nonsubmerged plants. This increase in ethylene synthesis appeared to be due to enhanced ACC formation rather than to increased conversion of ACC to ethylene. Our results indicate that ethylene produced during submergence is required for the stimulation of growth in submerged floating rice plants.
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Claims 10
Claim · model-written summary
In rice, internodal length increase with 7 days of submergence.
- Taxon
- rice
Oryza sativae1 - Treatment
- 7 days of submergencee0
- Outcome
- internodal lengthe0
- Direction
- increasee0
- Value
- 3- to 5-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In plants which were at least 21 days old, 7 days of submergence led to a 3- to 5-fold increase in internodal length.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, ethylene concentration in the internodes increased with submergence.
- Taxon
- riceOryza sativae1
- Treatment
- submergencee0
- Outcome
- ethylene concentration in the internodese0
- Direction
- increasede0
- Value
- about 0.02 to 1 microliters per litere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During submergence, the ethylene concentration in the internodes increased from about 0.02 to 1 microliters per liter.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, internode elongation stimulated with ethylene.
- Taxon
- riceOryza sativae1
- Treatment
- ethylenee0
- Outcome
- internode elongatione0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of nonsubmerged plants with ethylene also stimulated internode elongation.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, internode elongation inhibited with aminooxyacetic acid.
- Taxon
- riceOryza sativae1
- Treatment
- aminooxyacetic acide0
- Outcome
- internode elongatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When ethylene synthesis in partially submerged plants was blocked with aminooxyacetic acid and aminoethoxyvinylglycine, internode elongation was inhibited.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, internode elongation inhibited with aminoethoxyvinylglycine.
- Taxon
- riceOryza sativae1
- Treatment
- aminoethoxyvinylglycinee0
- Outcome
- internode elongatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When ethylene synthesis in partially submerged plants was blocked with aminooxyacetic acid and aminoethoxyvinylglycine, internode elongation was inhibited.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, growth inhibition reversed with 1-aminocyclopropane-1-carboxylic acid (ACC).
- Taxon
- riceOryza sativae1
- Treatment
- 1-aminocyclopropane-1-carboxylic acid (ACC)e0
- Outcome
- growth inhibitione0
- Direction
- reversede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This growth inhibition was reversed when ethylene biosynthesis was restored with 1-aminocyclopropane-1-carboxylic acid (ACC).”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, ethylene in floating rice was synthesized synthesized with methionine.
- Taxon
- riceOryza sativae1
- Outcome
- ethylene in floating rice was synthesizede0
- Direction
- synthesizede0
- Qualifier
- methioninee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Radio-labeling studies showed that ethylene in floating rice was synthesized from methionine via ACC.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, capacity to form ethylene higher with submerged plants.
- Taxon
- riceOryza sativae1
- Treatment
- submerged plantse0
- Outcome
- capacity to form ethylenee0
- Direction
- highere0
- Comparator
- nonsubmerged plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Internodal tissue from submerged plants had a much higher capacity to form ethylene than did internodal tissue from nonsubmerged plants.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, ethylene synthesis increase with ACC formation.
- Taxon
- riceOryza sativae1
- Outcome
- ethylene synthesise0
- Direction
- increasee0
- Qualifier
- ACC formatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This increase in ethylene synthesis appeared to be due to enhanced ACC formation rather than to increased conversion of ACC to ethylene.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
Claim · model-written summary
In rice, stimulation of growth stimulation with ethylene produced during submergence.
- Taxon
- riceOryza sativae1
- Outcome
- stimulation of growthe0
- Direction
- stimulatione0
- Qualifier
- ethylene produced during submergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results indicate that ethylene produced during submergence is required for the stimulation of growth in submerged floating rice plants.”
e1“rice (Oryza sativa L., cv. Habiganj Aman II)”
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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.