Abstract
BACKGROUND: Little attention has been paid to characterising the ethylene-signalling pathway genes in relation to abnormal ripening of harvested banana fruit during storage at high temperature. The aim of the present study was to investigate banana fruit abnormal ripening and the expression of ten genes associated with the ethylene-signalling pathway, namely MaACS1, MaACO1, MaERS1-4 and MaEIL1-4, at high temperature. Changes in these parameters of banana fruit at high temperature in response to 1-MCP pretreatment were also investigated. RESULTS: High temperature accelerated the decline in fruit firmness, increased ethylene production and inhibited degreening in banana fruit, resulting in fruit abnormal ripening. In addition, the expression of MaACS1, MaACO1, MaERS2, MaERS3, MaERS4, MaEIL1, MaEIL3 and MaEIL4 was enhanced in banana fruit stored at high temperature. However, application of 1-MCP prior to high temperature storage delayed fruit abnormal ripening and simultaneously suppressed the expression of MaACS1, MaERS2, MaERS3, MaEIL1, MaEIL3 and MaEIL4. CONCLUSION: The findings of this study suggested that the expression of genes associated with the ethylene-signalling pathway might be involved in banana fruit abnormal ripening at high temperature. Application of 1-MCP suppressed the expression of genes associated with the ethylene-signalling pathway, which may be attributed at least partially to 1-MCP delaying fruit abnormal ripening at high temperature.
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Claims 7
Claim · model-written summary
High temperature accelerated banana fruit firmness decline.
- Taxon
- banana fruitt0
- Treatment
- High temperaturee0
- Outcome
- fruit firmnesse0
- Direction
- accelerated the declinee0
Not reportedComparator
Verbatim
e0“High temperature accelerated the decline in fruit firmness”
t0“banana fruit”
Claim · model-written summary
High temperature increased ethylene production in banana fruit.
Not reportedComparator
Verbatim
e0“High temperature accelerated the decline in fruit firmness, increased ethylene production and inhibited degreening in banana fruit”
Claim · model-written summary
High temperature inhibited banana fruit degreening.
Not reportedComparator
Verbatim
e0“High temperature accelerated the decline in fruit firmness, increased ethylene production and inhibited degreening in banana fruit”
Claim · model-written summary
High temperature enhanced expression of eight named ethylene-signalling genes.
- Taxon
- banana fruite0
- Treatment
- high temperaturee0
- Gene
- MaACS1, MaACO1, MaERS2, MaERS3, MaERS4, MaEIL1, MaEIL3 and MaEIL4e0
- Outcome
- expressione0
- Direction
- enhancede0
Not reportedComparator
Verbatim
e0“the expression of MaACS1, MaACO1, MaERS2, MaERS3, MaERS4, MaEIL1, MaEIL3 and MaEIL4 was enhanced in banana fruit stored at high temperature”
Claim · model-written summary
1-MCP pretreatment delayed abnormal ripening at high temperature.
- Taxon
- banana fruitt0
- Treatment
- 1-MCPe0
- Outcome
- fruit abnormal ripeninge0
- Direction
- delayede0
- Qualifier
- high temperature storagee0
Not reportedComparator
Verbatim
e0“application of 1-MCP prior to high temperature storage delayed fruit abnormal ripening”
t0“banana fruit”
Claim · model-written summary
1-MCP pretreatment suppressed expression of six ethylene-signalling genes at high temperature.
- Taxon
- banana fruitt0
- Treatment
- 1-MCPe0
- Gene
- MaACS1, MaERS2, MaERS3, MaEIL1, MaEIL3 and MaEIL4e0
- Outcome
- expressione0
- Direction
- suppressede0
Not reportedComparator
Verbatim
e0“application of 1-MCP prior to high temperature storage delayed fruit abnormal ripening and simultaneously suppressed the expression of MaACS1, MaERS2, MaERS3, MaEIL1, MaEIL3 and MaEIL4”
t0“banana fruit”
Claim · model-written summary
The authors suggest ethylene-signalling gene expression may contribute to abnormal ripening at high temperature.
Verbatim
e0“the expression of genes associated with the ethylene-signalling pathway might be involved in banana fruit abnormal ripening at high temperature”
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