Abstract
Internal ethylene concentration, ability to convert 1-amino-cyclopropane-1-carboxylic acid (ACC) to ethylene (ethylene-forming enzyme [EFE] activity) and ACC content in the peel of apples (Malus domestica Borkh., cv Golden Delicious) increased only slightly during fruit maturation on the tree. Treatment of immature apples with 100 microliters ethylene per liter for 24 hours increased EFE activity in the peel tissue, but did not induce an increase in ethylene production. This ability of apple peel tissue to respond to ethylene with elevated EFE activity increased exponentially during maturation on the tree. After harvest of mature preclimacteric apples previously treated with aminoethoxyvinyl-glycine, 0.05 microliter per liter ethylene did not immediately cause a rapid increase of development in EFE activity in peel tissue. However, 0.5 microliter per liter ethylene and higher concentrations did. The ethylene concentration for half-maximal promotion of EFE development was estimated to be approximately 0.9 microliter per liter. CO(2) partially inhibited the rapid increase of ethylene-promoted development of EFE activity. It is suggested that ethylene-promoted CO(2) production is involved in the regulation of autocatalytic ethylene production in apples.
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Claims 11
Claim · model-written summary
Internal ethylene concentration increased only slightly during maturation.
- Taxon
- apples
Malus domesticae0 - Material
- Golden Deliciouse0
- Organ / stage
- peele0
- Outcome
- Internal ethylene concentratione0
- Direction
- increased only slightlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Internal ethylene concentration, ability to convert 1-amino-cyclopropane-1-carboxylic acid (ACC) to ethylene (ethylene-forming enzyme [EFE] activity) and ACC content in the peel of apples (Malus domestica Borkh., cv Golden Delicious) increased only slightly during fruit maturation on the tree.”
Claim · model-written summary
EFE activity increased only slightly during maturation.
- Taxon
- applesMalus domesticae0
- Organ / stage
- peele0
- Gene
- ethylene-forming enzyme [EFE]e0
- Outcome
- ethylene-forming enzyme [EFE] activitye0
- Direction
- increased only slightlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Internal ethylene concentration, ability to convert 1-amino-cyclopropane-1-carboxylic acid (ACC) to ethylene (ethylene-forming enzyme [EFE] activity) and ACC content in the peel of apples (Malus domestica Borkh., cv Golden Delicious) increased only slightly during fruit maturation on the tree.”
Claim · model-written summary
Apple peel ACC content increased only slightly during maturation.
- Taxon
- applesMalus domesticae0
- Organ / stage
- peele0
- Outcome
- ACC contente0
- Direction
- increased only slightlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Internal ethylene concentration, ability to convert 1-amino-cyclopropane-1-carboxylic acid (ACC) to ethylene (ethylene-forming enzyme [EFE] activity) and ACC content in the peel of apples (Malus domestica Borkh., cv Golden Delicious) increased only slightly during fruit maturation on the tree.”
Claim · model-written summary
Ethylene treatment increased EFE activity in immature apple peel.
- Taxon
- applesMalus domesticae0
- Treatment
- 100 microliters ethylene per liter for 24 hourse0
- Outcome
- EFE activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of immature apples with 100 microliters ethylene per liter for 24 hours increased EFE activity in the peel tissue, but did not induce an increase in ethylene production.”
Claim · model-written summary
The ethylene treatment did not induce increased ethylene production.
- Taxon
- applesMalus domesticae0
- Treatment
- 100 microliters ethylene per liter for 24 hourse0
- Outcome
- ethylene productione0
- Direction
- did not induce an increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of immature apples with 100 microliters ethylene per liter for 24 hours increased EFE activity in the peel tissue, but did not induce an increase in ethylene production.”
Claim · model-written summary
The ethylene responsiveness of apple peel EFE activity increased exponentially during maturation.
- Taxon
- appleMalus domesticae0
- Organ / stage
- peel tissuee0
- Outcome
- ability of apple peel tissue to respond to ethylene with elevated EFE activitye0
- Direction
- increased exponentiallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This ability of apple peel tissue to respond to ethylene with elevated EFE activity increased exponentially during maturation on the tree”
Claim · model-written summary
At 0.05 microliter per liter, ethylene did not immediately induce rapid EFE activity development.
- Taxon
- applesMalus domesticae0
- Organ / stage
- peel tissuee0
- Treatment
- 0.05 microliter per liter ethylenee0
- Outcome
- development in EFE activitye0
- Direction
- did not immediately cause a rapid increasee0
- Qualifier
- previously treated with aminoethoxyvinyl-glycinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After harvest of mature preclimacteric apples previously treated with aminoethoxyvinyl-glycine, 0.05 microliter per liter ethylene did not immediately cause a rapid increase of development in EFE activity in peel tissue”
Claim · model-written summary
Ethylene at 0.5 microliter per liter or higher caused rapid EFE activity development.
- Taxon
- applesMalus domesticae2
- Organ / stage
- peel tissuee1
- Treatment
- 0.5 microliter per liter ethylene and higher concentrationse0
- Outcome
- development in EFE activitye1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.5 microliter per liter ethylene and higher concentrations did”
e1“a rapid increase of development in EFE activity in peel tissue”
e2“After harvest of mature preclimacteric apples”
Claim · model-written summary
The estimated ethylene concentration for half-maximal EFE development was approximately 0.9 microliter per liter.
- Taxon
- applesMalus domesticae1
- Outcome
- ethylene concentration for half-maximal promotion of EFE developmente0
- Value
- approximately 0.9 microliter per litere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ethylene concentration for half-maximal promotion of EFE development was estimated to be approximately 0.9 microliter per liter”
e1“peel of apples (Malus domestica Borkh., cv Golden Delicious)”
Claim · model-written summary
CO(2) partially inhibited ethylene-promoted EFE activity development.
- Taxon
- applesMalus domesticae1
- Treatment
- CO(2)e0
- Outcome
- ethylene-promoted development of EFE activitye0
- Direction
- partially inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO(2) partially inhibited the rapid increase of ethylene-promoted development of EFE activity”
e1“peel of apples (Malus domestica Borkh., cv Golden Delicious)”
Claim · model-written summary
The authors suggest ethylene-promoted CO(2) production regulates autocatalytic ethylene production.
- Taxon
- applesMalus domesticae0
- Compound
- CO(2)e0
- Outcome
- autocatalytic ethylene productione0
- Qualifier
- ethylene-promoted CO(2) productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is suggested that ethylene-promoted CO(2) production is involved in the regulation of autocatalytic ethylene production in apples”
The same questions in other papers
ethene · physiology: hormones · Malus domestica (apple)Results differ
5 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
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See all 11 papers →ethene · growth · Malus domestica (apple)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
co2 · physiology: hormones · Malus domestica (apple)Positive and negative results
2 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 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.