Abstract
The intact fruits of preclimacteric tomato (Lycopersicon esculentum Mill) or cantaloupe (Cucumis melo L.) produced very little ethylene and had low capability of converting 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene. When these unripe tomato or cantaloupe fruits were treated with ethylene for 16 hours there was no increase in ACC content or in ethylene production rate, but the tissue's capability to convert ACC to ethylene increased markedly. Such an effect was also observed in fruits of tomato mutants rin and nor, which do not undergo ripening and the climacteric increase in ethylene production during the senescence. The development of this ethylene-forming capability induced by ethylene increased with increasing ethylene concentration (from 0.1 to 100 microliters per liter) and duration (1 to 24 hours); when ethylene was removed this capability remained high for sometime (more than 24 hours). Norbornadiene, a competitive inhibitor of ethylene action, effectively eliminated the promotive effect of ethylene in tomato fruit. These data indicate that the development of the capability to convert ACC to ethylene in preclimacteric tomato and cantaloupe fruits are sensitive to ethylene treatment and that when these fruits are exposed to exogenous ethylene, the increase in ethylene-forming enzyme precedes the increase in ACC synthase.
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Claims 11
Claim · model-written summary
Preclimacteric tomato fruit produced little ethylene and converted ACC poorly.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- preclimacterice0
- Outcome
- very little ethylenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“preclimacteric tomato (Lycopersicon esculentum Mill) or cantaloupe (Cucumis melo L.) produced very little ethylene and had low capability of converting 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene”
Claim · model-written summary
Preclimacteric cantaloupe fruit produced little ethylene and converted ACC poorly.
- Taxon
- cantaloupe
Cucumis melo var. cantalupoe0 - Organ / stage
- preclimacterice0
- Outcome
- low capability of converting 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylenee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“preclimacteric tomato (Lycopersicon esculentum Mill) or cantaloupe (Cucumis melo L.) produced very little ethylene and had low capability of converting 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene”
Claim · model-written summary
Ethylene treatment did not increase ACC content in unripe tomato or cantaloupe fruit.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- unripee0
- Treatment
- treated with ethylene for 16 hourse0
- Outcome
- ACC contente0
- Direction
- no increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When these unripe tomato or cantaloupe fruits were treated with ethylene for 16 hours there was no increase in ACC content”
Claim · model-written summary
Ethylene treatment did not increase ethylene production rate.
- Taxon
- cantaloupeCucumis melo var. cantalupoe0
- Treatment
- treated with ethylene for 16 hourse0
- Outcome
- ethylene production ratee0
- Direction
- no increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When these unripe tomato or cantaloupe fruits were treated with ethylene for 16 hours there was no increase in ACC content or in ethylene production rate”
Claim · model-written summary
Ethylene treatment markedly increased ACC-to-ethylene conversion capacity.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Ethylenet0
- Outcome
- capability to convert ACC to ethylenee0
- Direction
- increased markedlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tissue's capability to convert ACC to ethylene increased markedly”
t0“Ethylene of the Capability to Convert 1-Aminocyclopropane-1-carboxylic Acid to Ethylene in Preclimacteric Tomato and Cantaloupe Fruits”
Claim · model-written summary
Ethylene also promoted conversion capacity in tomato rin and nor mutants.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- rin and nore0
- Treatment
- ethylenet0
- Outcome
- effecte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Such an effect was also observed in fruits of tomato mutants rin and nor”
t0“Promotion by Ethylene”
Claim · model-written summary
Ethylene-forming capability increased with ethylene concentration.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- ethylenee0
- Outcome
- ethylene-forming capabilitye0
- Direction
- increasede0
- Qualifier
- from 0.1 to 100 microliters per litere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The development of this ethylene-forming capability induced by ethylene increased with increasing ethylene concentration (from 0.1 to 100 microliters per liter)”
t0“Tomato”
Claim · model-written summary
Ethylene-forming capability increased with treatment duration.
- Taxon
- cantaloupeCucumis melo var. cantalupot0
- Treatment
- duration (1 to 24 hours)e0
- Outcome
- capabilityt0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased with increasing ethylene concentration (from 0.1 to 100 microliters per liter) and duration (1 to 24 hours)”
t0“Capability to Convert 1-Aminocyclopropane-1-carboxylic Acid to Ethylene in Preclimacteric Tomato and Cantaloupe Fruits”
Claim · model-written summary
Conversion capability remained high for over 24 hours after ethylene removal.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- capabilitye0
- Direction
- remained highe0
- Value
- more than 24 hourse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when ethylene was removed this capability remained high for sometime (more than 24 hours)”
t0“Tomato”
Claim · model-written summary
Norbornadiene eliminated the ethylene-promoting effect in tomato fruit.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Norbornadienee0
- Outcome
- promotive effect of ethylenee0
- Direction
- eliminatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Norbornadiene, a competitive inhibitor of ethylene action, effectively eliminated the promotive effect of ethylene in tomato fruit”
Claim · model-written summary
Ethylene-forming enzyme increased before ACC synthase after exogenous ethylene exposure.
- Taxon
- TomatoSolanum lycopersicumt0
- Gene
- ACC synthasee0
- Outcome
- increase in ethylene-forming enzyme precedes the increase in ACC synthasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in ethylene-forming enzyme precedes the increase in ACC synthase”
t0“Tomato”
The same questions in other papers
ethene · physiology: hormones · Cucumis melo (muskmelon)Results differ
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
ethene · physiology: hormones · Solanum lycopersicum (tomato)Positive and negative results
4 papers in the same direction as this paper · 8 in the opposite direction
- negative
- no effect
- no effect
9 papers more in this group
See all 13 papers →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.