Abstract
In this paper, the effects of 1-methylcyclopropene (1-MCP) treatment on the ethanol accumulation and mitochondrial energy metabolism in kiwifruit (Actinidia deliciosa) cv. “Bruno” were investigated during storage at room temperature (24 ± 1°C). The results showed that 1-MCP treatment significantly reduced the ethanol accumulation, maintained higher levels of adenosine triphosphate (ATP) content and energy charge (EC), enhanced enzymes activities involved in mitochondrial energy metabolism, such as succinic dehydrogenase, cytochrome C oxidase, H+-adenosine triphosphatase (H+-ATPase), and Ca2+-adenosine triphosphatase (Ca2+-ATPase), and regulated the NADH/NAD+ ratio, and pyruvate to tricarboxylic acid cycle (TCA) by suppressing the glutamate–pyruvate transaminase and promoting the pyruvate dehydrogenase activity, and decarboxylation of citric acid in harvested kiwifruit. These shifts in mitochondrial energy metabolism and oxidative phosphorylation correlated the higher ATP yield and an elevated EC with lower ethanol accumulation (13.71% of those in the control fruit) under 1-MCP treatment, and reduced the susceptibility of ethanol related off-flavor disorder in kiwifruit during storage. Practical applications A kiwifruit (Actinidia deliciosa) cv. “Bruno,” a major cultivated kiwifruit in China, is prone to accumulate ethanol sharply after respiratory climacteric during storage. Ethanol has been accounted as a vital aroma volatile metabolite in various fruits. However, over accumulation of ethanol often leads to the development of alcohol off-flavor disorder, particularly in typical climacteric fruit such as kiwifruit. This work was aimed to maintain the flavor quality of kiwifruit cv. “Bruno” via improving the mitochondrial energy metabolism and functional TCA cycle, and limiting the ethanol accumulation under 1-MCP treatment. Thus, 1-MCP treatment could be beneficial to prevent the occurrence of alcohol off-flavor disorder along with sustainment of the flavor quality of kiwifruit cv. “Bruno” during storage at room temperature.
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Claims 11
Claim · model-written summary
1-MCP treatment significantly reduced ethanol accumulation in stored kiwifruit.
- Taxon
- kiwifruit
Actinidia deliciosat0 - Treatment
- 1-MCP treatmente1
- Outcome
- ethanol accumulatione1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e1“1-MCP treatment significantly reduced the ethanol accumulation”
Claim · model-written summary
1-MCP treatment maintained higher ATP content and energy charge in stored kiwifruit.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente0
- Outcome
- adenosine triphosphate (ATP) content and energy charge (EC)e1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e0“1-MCP treatment significantly”
e1“maintained higher levels of adenosine triphosphate (ATP) content and energy charge (EC)”
Claim · model-written summary
1-MCP treatment enhanced the activities of succinic dehydrogenase and cytochrome C oxidase in mitochondrial energy metabolism of kiwifruit.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente0
- Gene
- succinic dehydrogenase, cytochrome C oxidasee2
- Outcome
- enzymes activities involved in mitochondrial energy metabolisme1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e0“1-MCP treatment significantly”
e1“enhanced enzymes activities involved in mitochondrial energy metabolism”
e2“succinic dehydrogenase, cytochrome C oxidase”
Claim · model-written summary
1-MCP treatment enhanced the activities of H+-ATPase and Ca2+-ATPase in mitochondrial energy metabolism of kiwifruit.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente0
- Gene
- H+-adenosine triphosphatase (H+-ATPase), and Ca2+-adenosine triphosphatase (Ca2+-ATPase)e2
- Outcome
- enzymes activities involved in mitochondrial energy metabolisme1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e0“1-MCP treatment significantly”
e1“enhanced enzymes activities involved in mitochondrial energy metabolism”
e2“H+-adenosine triphosphatase (H+-ATPase), and Ca2+-adenosine triphosphatase (Ca2+-ATPase)”
Claim · model-written summary
1-MCP treatment regulated the NADH/NAD+ ratio in kiwifruit.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente0
- Outcome
- NADH/NAD+ ratioe1
- Direction
- regulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e0“1-MCP treatment significantly”
e1“regulated the NADH/NAD+ ratio”
Claim · model-written summary
1-MCP treatment suppressed glutamate-pyruvate transaminase activity in kiwifruit, regulating pyruvate entry into the TCA cycle.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente0
- Outcome
- glutamate–pyruvate transaminasee1
- Direction
- suppressinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e0“1-MCP treatment significantly”
e1“suppressing the glutamate–pyruvate transaminase”
Claim · model-written summary
1-MCP treatment promoted pyruvate dehydrogenase activity in kiwifruit, regulating pyruvate entry into the TCA cycle.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente0
- Outcome
- pyruvate dehydrogenase activitye1
- Direction
- promotinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e0“1-MCP treatment significantly”
e1“promoting the pyruvate dehydrogenase activity”
Claim · model-written summary
1-MCP treatment regulated decarboxylation of citric acid in harvested kiwifruit.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente0
- Outcome
- decarboxylation of citric acide1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e0“1-MCP treatment significantly”
e1“decarboxylation of citric acid”
Claim · model-written summary
Shifts in mitochondrial energy metabolism correlated with higher ATP yield and elevated energy charge and with lower ethanol accumulation under 1-MCP treatment, at 13.71% of the control fruit level.
- Taxon
- kiwifruitActinidia deliciosat0
- Treatment
- 1-MCP treatmente1
- Outcome
- ethanol accumulatione1
- Direction
- lowere1
- Value
- 13.71% of those in the control fruite1
- Comparator
- control fruite1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“kiwifruit”
e1“correlated the higher ATP yield and an elevated EC with lower ethanol accumulation (13.71% of those in the control fruit) under 1-MCP treatment”
Claim · model-written summary
1-MCP treatment reduced the susceptibility of kiwifruit to ethanol-related off-flavor disorder during storage.
- Taxon
- kiwifruitActinidia deliciosae1
- Treatment
- 1-MCP treatmente0
- Outcome
- susceptibility of ethanol related off-flavor disordere1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP treatment significantly”
e1“reduced the susceptibility of ethanol related off-flavor disorder in kiwifruit during storage”
Claim · model-written summary
The authors conclude that 1-MCP treatment could help prevent alcohol off-flavor disorder and sustain flavor quality of 'Bruno' kiwifruit stored at room temperature.
- Taxon
- kiwifruitActinidia deliciosae1
- Treatment
- 1-MCP treatmente1
- Outcome
- prevent the occurrence of alcohol off-flavor disordere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“1-MCP treatment could be beneficial to prevent the occurrence of alcohol off-flavor disorder along with sustainment of the flavor quality of kiwifruit cv. “Bruno” during storage at room temperature”
The same questions in other papers
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1-methylcyclopropene · physiology: enzyme activity · Actinidia deliciosa (kiwifruit)Results agree
5 papers in the same direction as this paper
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See all 6 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.