Abstract
Premature ripening and/or senescence and abscission induced by exposure to ethylene are significant postharvest problems. Banana fruit and grevillea and Geraldton waxflower flowers are among affected commodities. Treatment with 1-methylcyclopropene gas or silver thiosulfate liquid can be used to prevent ethylene perception and response. Treatment of banana fruit with 10 nL 1-methylcyclopropene/L for 12 h at 20°C afforded protection against subsequent serial treatments over 13 days of subsets with 100 L ethylene/L for 24 h at 20°C. Protection of Grevillea ‘Sylvia’ inflorescences was effective only for 2 days. Thereafter, fruit and inflorescences regained sensitivity to ethylene. In contrast, neither banana fruit nor grevillea inflorescences treated with 10 nL 1-methylcyclopropene/L for 12 h at 2°C were protected against ethylene. 1-Methylcyclopropene binding to ethylene receptors was apparently not achieved at the lower temperature. Increasing the 1-methylcyclopropene concentration to 100 nL/L, applied at 2.5°C to banana fruit, achieved protection against ethylene. Waxflower sprigs treated with 10 nL 1-methylcyclopropene/L for 12 h at 2 or 20°C regained full sensitivity to ethylene after about 2 and 4 days, respectively. In contrast, pulsing waxflower with 0.5 mmol Ag+/L as silver thiosulfate for 12 h at 2 or 20°C afforded protection against ethylene for the 10 days duration of the experiment.
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Claims 10
Claim · model-written summary
Banana fruit treated with 10 nL 1-methylcyclopropene/L for 12 h at 20°C was protected during ethylene challenges over 13 days.
- Taxon
- bananae0
- Organ / stage
- fruite0
- Treatment
- 10 nL 1-methylcyclopropene/L for 12 h at 20°Ce0
- Outcome
- protection against subsequent serial treatmentse0
- Qualifier
- over 13 dayse0
Not reportedComparatorDirection
Verbatim
e0“Treatment of banana fruit with 10 nL 1-methylcyclopropene/L for 12 h at 20°C afforded protection against subsequent serial treatments over 13 days of subsets with 100 L ethylene/L for 24 h at 20°C.”
Claim · model-written summary
Grevillea Sylvia inflorescences were protected against ethylene for only two days.
- Material
- ‘Sylvia’e0
- Organ / stage
- inflorescencese0
- Treatment
- 1-methylcyclopropenet0
- Outcome
- Protectione0
- Value
- 2 dayse0
GrevilleaNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protection of Grevillea ‘Sylvia’ inflorescences was effective only for 2 days.”
t0“1-Methylcyclopropene treatment”
Claim · model-written summary
Banana fruit regained sensitivity to ethylene after protection ended.
Verbatim
e0“Thereafter, fruit and inflorescences regained sensitivity to ethylene.”
t0“banana fruit”
Claim · model-written summary
Grevillea inflorescences regained sensitivity to ethylene after protection ended.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thereafter, fruit and inflorescences regained sensitivity to ethylene.”
t0“grevillea”
Claim · model-written summary
Banana fruit treated at 2°C with 10 nL 1-methylcyclopropene/L was not protected against ethylene.
- Taxon
- bananae0
- Organ / stage
- fruite0
- Treatment
- 10 nL 1-methylcyclopropene/L for 12 h at 2°Ce0
- Outcome
- protected against ethylenee0
Not reportedComparatorDirection
Verbatim
e0“neither banana fruit nor grevillea inflorescences treated with 10 nL 1-methylcyclopropene/L for 12 h at 2°C were protected against ethylene.”
Claim · model-written summary
Grevillea inflorescences treated at 2°C with 10 nL 1-methylcyclopropene/L were not protected against ethylene.
- Organ / stage
- inflorescencese0
- Treatment
- 10 nL 1-methylcyclopropene/L for 12 h at 2°Ce0
- Outcome
- protected against ethylenee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither banana fruit nor grevillea inflorescences treated with 10 nL 1-methylcyclopropene/L for 12 h at 2°C were protected against ethylene.”
Claim · model-written summary
At the lower temperature, 1-methylcyclopropene apparently did not bind ethylene receptors.
Verbatim
e0“1-Methylcyclopropene binding to ethylene receptors was apparently not achieved at the lower temperature.”
t0“banana fruit”
Claim · model-written summary
Increasing 1-methylcyclopropene to 100 nL/L at 2.5°C protected banana fruit against ethylene.
- Taxon
- bananae0
- Organ / stage
- fruite0
- Treatment
- 1-methylcyclopropene concentration to 100 nL/L, applied at 2.5°Ce0
- Outcome
- protection against ethylenee0
- Direction
- Increasinge0
Not reportedComparator
Verbatim
e0“Increasing the 1-methylcyclopropene concentration to 100 nL/L, applied at 2.5°C to banana fruit, achieved protection against ethylene.”
Claim · model-written summary
Waxflower sprigs treated with 1-methylcyclopropene at 2°C regained ethylene sensitivity after about two days.
- Taxon
- Waxflowere0
- Organ / stage
- sprigse0
- Treatment
- 10 nL 1-methylcyclopropene/L for 12 h at 2 or 20°Ce0
- Outcome
- regained full sensitivity to ethylenee0
- Value
- about 2 and 4 dayse0
Not reportedComparatorDirection
Verbatim
e0“Waxflower sprigs treated with 10 nL 1-methylcyclopropene/L for 12 h at 2 or 20°C regained full sensitivity to ethylene after about 2 and 4 days, respectively.”
Claim · model-written summary
Waxflower sprigs treated with silver thiosulfate remained protected against ethylene for ten days.
- Taxon
- waxflowere0
- Treatment
- 0.5 mmol Ag+/L as silver thiosulfate for 12 h at 2 or 20°Ce0
- Outcome
- protection against ethylenee0
- Value
- 10 dayse0
Not reportedComparatorDirection
Verbatim
e0“pulsing waxflower with 0.5 mmol Ag+/L as silver thiosulfate for 12 h at 2 or 20°C afforded protection against ethylene for the 10 days duration of the experiment.”
The same questions in other papers
1-methylcyclopropene · physiology: hormones · MusaResults differ
11 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- negative
10 papers more in this group
See all 14 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.