Abstract
The rate of evolution of ethylene by tomato plants was rapidly increased by O3 fumigation. The time course of the increase in 1-aminocyclopropane-1-carboxylic acid (ACC) synthase activity was the same as that in the rate of evolution of ethylene, suggesting that ACC synthase activity might be a rate-limiting step in the evolution of ethylene that is caused by O3 fumigation. The rate of the O3-induced evolution of ethylene was increased by the application of ACC to tomato plants, suggesting the involvement of ACC oxidase in the O3-induced evolution of ethylene. Treatment of plants with tiron inhibited the evolution of ethane, but not of ethylene. These results indicated that evolution of ethylene in O3-treated tomato plants might result from enzymatic reactions catalyzed by both ACC synthase and ACC oxidase, but not from stimulation by O3 of the peroxidation of lipids mediated by free radicals. Pretreatment of leaves with aminoethoxyvinylglycine (AVG), an inhibitor of ACC synthase, significantly inhibited the evolution of ethylene that was induced by O3 and concomitantly reduced the extent of O3-induced visible damage to leaves. Treatment with 2,5-norbonadiene, an inhibitor of the action of ethylene, strongly reduced the extent of visible damage caused by O3, even though it did not suppress the evloution of ethylene. These results indicate that ethylene acts on certain metabolic processes to cause visible damage.
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Claims 9
Claim · model-written summary
Ozone rapidly increased ethylene evolution in tomato.
- Taxon
- tomato plants
Solanum lycopersicume0 - Treatment
- O3 fumigatione0
- Outcome
- evolution of ethylenee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of evolution of ethylene by tomato plants was rapidly increased by O3 fumigation.”
Claim · model-written summary
ACC synthase activity rose on the same time course as ethylene evolution.
- Taxon
- Tomato PlantsSolanum lycopersicumt0
- Gene
- 1-aminocyclopropane-1-carboxylic acid (ACC) synthasee0
- Outcome
- synthase activitye0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The time course of the increase in 1-aminocyclopropane-1-carboxylic acid (ACC) synthase activity was the same as that in the rate of evolution of ethylene”
t0“Tomato Plants”
Claim · model-written summary
ACC application increased ozone-induced ethylene evolution.
- Taxon
- tomato plantsSolanum lycopersicume0
- Treatment
- application of ACCe0
- Outcome
- O3-induced evolution of ethylenee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of the O3-induced evolution of ethylene was increased by the application of ACC to tomato plants”
Claim · model-written summary
Tiron inhibited ethane evolution.
- Taxon
- Tomato PlantsSolanum lycopersicumt0
- Treatment
- tirone0
- Outcome
- evolution of ethanee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of plants with tiron inhibited the evolution of ethane, but not of ethylene.”
t0“Tomato Plants”
Claim · model-written summary
Tiron did not inhibit ethylene evolution.
- Taxon
- Tomato PlantsSolanum lycopersicumt0
- Treatment
- tirone0
- Outcome
- ethylenee0
- Direction
- note0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of plants with tiron inhibited the evolution of ethane, but not of ethylene.”
t0“Tomato Plants”
Claim · model-written summary
AVG significantly inhibited ozone-induced ethylene evolution.
- Taxon
- Tomato PlantsSolanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- aminoethoxyvinylglycine (AVG)e0
- Outcome
- evolution of ethylenee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of leaves with aminoethoxyvinylglycine (AVG), an inhibitor of ACC synthase, significantly inhibited the evolution of ethylene that was induced by O3”
t0“Tomato Plants”
Claim · model-written summary
AVG reduced ozone-induced visible leaf damage.
- Taxon
- Tomato PlantsSolanum lycopersicumt0
- Treatment
- aminoethoxyvinylglycine (AVG)e0
- Outcome
- O3-induced visible damage to leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pretreatment of leaves with aminoethoxyvinylglycine (AVG), an inhibitor of ACC synthase, significantly inhibited the evolution of ethylene that was induced by O3 and concomitantly reduced the extent of O3-induced visible damage to leaves.”
t0“Tomato Plants”
Claim · model-written summary
2,5-norbonadiene strongly reduced visible ozone damage.
- Taxon
- Tomato PlantsSolanum lycopersicumt0
- Treatment
- 2,5-norbonadienee0
- Outcome
- visible damage caused by O3e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with 2,5-norbonadiene, an inhibitor of the action of ethylene, strongly reduced the extent of visible damage caused by O3”
t0“Tomato Plants”
Claim · model-written summary
2,5-norbonadiene did not suppress ethylene evolution.
- Taxon
- Tomato PlantsSolanum lycopersicumt0
- Treatment
- 2,5-norbonadienee0
- Outcome
- evloution of ethylenee0
- Direction
- did not suppresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with 2,5-norbonadiene, an inhibitor of the action of ethylene, strongly reduced the extent of visible damage caused by O3, even though it did not suppress the evloution of ethylene.”
t0“Tomato Plants”
The same questions in other papers
ozone · physiology: hormones · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
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.