Abstract
The primary mechanism of significant increase in resistance of rice to low temperature photoinhibition was studied by foliar spray with 250 mg/L aqueous solution of 5-aminolevulinic acid (ALA). Low concentration ALA-treatment enhanced the resistance of rice to low temperature photoinhibition, for the significant enhancement of the ascorbate peroxidase (APX) and glutathione reductase (GR) activities as well as the less decline superoxide dismutase (SOD) activity which alleviates the photoinhibition of photosystem Ⅱ by reducing the accumulation of the hydrogen peroxide (H2O2) rather than strengthing the thermal energy dissipation through xanthophyll cycle. Moreover, the increased activity of APX was probably resulted in the accumulation of heme.
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Claims 5
Claim · model-written summary
ALA treatment enhanced rice resistance to low temperature photoinhibition.
- Taxon
- rice
Oryza sativae0 - Treatment
- ALA-treatmente0
- Outcome
- resistance of rice to low temperature photoinhibitione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low concentration ALA-treatment enhanced the resistance of rice to low temperature photoinhibition”
Claim · model-written summary
ALA treatment significantly enhanced ascorbate peroxidase and glutathione reductase activities.
- Taxon
- RiceOryza sativat0
- Treatment
- ALA-treatmente1
- Gene
- ascorbate peroxidase (APX) and glutathione reductase (GR)e0
- Outcome
- ascorbate peroxidase (APX) and glutathione reductase (GR) activitiese0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant enhancement of the ascorbate peroxidase (APX) and glutathione reductase (GR) activities”
e1“Low concentration ALA-treatment”
t0“Rice”
Claim · model-written summary
ALA treatment lessened the decline in superoxide dismutase activity.
- Taxon
- RiceOryza sativat0
- Treatment
- ALA-treatmente1
- Gene
- superoxide dismutase (SOD)e0
- Outcome
- superoxide dismutase (SOD) activitye0
- Direction
- less declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the less decline superoxide dismutase (SOD) activity”
e1“Low concentration ALA-treatment”
t0“Rice”
Claim · model-written summary
The authors attribute alleviated photosystem II photoinhibition to reduced hydrogen peroxide accumulation.
- Taxon
- RiceOryza sativat0
- Compound
- hydrogen peroxide (H2O2)e0
- Outcome
- photoinhibition of photosystem Ⅱe0
- Direction
- alleviatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alleviates the photoinhibition of photosystem Ⅱ by reducing the accumulation of the hydrogen peroxide (H2O2)”
t0“Rice”
Claim · model-written summary
The authors suggest increased APX activity probably resulted from heme accumulation.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increased activity of APX was probably resulted in the accumulation of heme”
t0“Rice”
The same questions in other papers
5-aminolevulinic acid · physiology: photosynthesis · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
5-aminolevulinic acid · physiology: antioxidant enzymes · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.