Abstract
Abstract 5-Aminolevulinic acid (ALA) acts to increase chlorophyll biosynthesis, photosynthesis, cold stress tolerance, and salt tolerance at low concentrations. We studied the effects of ALA on H2 15O translocation from the roots to the shoots of rice plants (Oryza sativa L. cv. Nipponbare) in real time by a positron-emitting tracer imaging system (PETIS). When the plant was treated with 10 μm ALA, the velocity of the H2 15O translocation from 2 to 12 min after absorption increased to 126, 137, 140% that of the control at 1.5, 2.5, and 3.5 h after ALA treatment, respectively. However, ALA did not affect the H2 15O translocation within 0.5 h of treatment. When the plant was treated with 0.1 mM ABA at 4 h after 10 μm ALA treatment, the velocity of the H2 15O translocation decreased at 0.5 h after ABA treatment. Those observations suggested ALA might be absorbed and transported to the guard cells within 1.5 h and functioned to expand the stomatal aperture.
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Claims 4
Claim · model-written summary
10 μM ALA increased the velocity of H2 15O translocation in rice to 126, 137 and 140% of the control at 1.5, 2.5 and 3.5 h after treatment.
- Taxon
- rice plants
Oryza sativae0 - Material
- Oryza sativa L. cv. Nipponbaree0
- Treatment
- 10 μm ALAe1
- Outcome
- velocity of the H2 15O translocatione1
- Direction
- increasede1
- Value
- 126, 137, 140%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2 15O translocation from the roots to the shoots of rice plants (Oryza sativa L. cv. Nipponbare)”
e1“When the plant was treated with 10 μm ALA, the velocity of the H2 15O translocation from 2 to 12 min after absorption increased to 126, 137, 140% that of the control at 1.5, 2.5, and 3.5 h after ALA treatment, respectively”
Claim · model-written summary
ALA did not affect H2 15O translocation in rice within 0.5 h of treatment.
- Taxon
- rice plantsOryza sativae0
- Treatment
- ALAe2
- Outcome
- H2 15O translocatione2
- Direction
- did not affecte2
- Qualifier
- within 0.5 h of treatmente2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2 15O translocation from the roots to the shoots of rice plants (Oryza sativa L. cv. Nipponbare)”
e2“However, ALA did not affect the H2 15O translocation within 0.5 h of treatment”
Claim · model-written summary
ABA applied at 0.5 h before the measurement decreased the velocity of H2 15O translocation in rice at 0.5 h after ABA treatment, in plants already treated with ALA.
- Taxon
- rice plantsOryza sativae0
- Treatment
- 0.1 mM ABAe3
- Outcome
- velocity of the H2 15O translocatione3
- Direction
- decreasede3
- Qualifier
- at 0.5 h after ABA treatmente3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2 15O translocation from the roots to the shoots of rice plants (Oryza sativa L. cv. Nipponbare)”
e3“When the plant was treated with 0.1 mM ABA at 4 h after 10 μm ALA treatment, the velocity of the H2 15O translocation decreased at 0.5 h after ABA treatment”
Claim · model-written summary
ALA might be absorbed and transported to guard cells within 1.5 h and expand the stomatal aperture in rice (hypothesis).
- Taxon
- rice plantsOryza sativae0
- Organ / stage
- guard cellse4
- Treatment
- ALAe4
- Outcome
- stomatal aperturee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2 15O translocation from the roots to the shoots of rice plants (Oryza sativa L. cv. Nipponbare)”
e4“ALA might be absorbed and transported to the guard cells within 1.5 h and functioned to expand the stomatal aperture”
The same questions in other papers
(+)-abscisic acid · nutrient: content · Oryza sativa (rice)Positive and negative results
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- positive
- positive
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See all 13 papers →5-aminolevulinic acid · nutrient: content · 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.