Abstract
The physiological and biochemical changes during melon fruit development and ripening were analyzed,a key enzyme in ABA biosynthesis,9-cis-epoxycarotenoid dioxygenase gene(NCED),was cloned.Its expression pattern was analyzed.Efffect of ABA,NDGA(nordihydroguaiaretic acid),1-MCP(1-methylcyclopropene) and 1-MCP + ABA on fruit ripening and softening is also investigated.The results showed that NCED gene of melon fruit expressed strongly during early-maturity period.The content of endogenous ABA peaked after NCED gene expression,and then continued to decline.Ethylene production,ACC(1-aminocylopropane-1-carboxylic acid) content and ACO(ACC oxidase) activity in the early fruit maturity is very low,their maximum value is about 10 days late than of endogenous ABA.Exogenous ABA treatment significantly enhanced fruit ripening and softening.Those ripening-relation indexes were eight days earlier than that of the control.On the contrary,the NDGA treatment delayed the ripening-relation index.The effect of 1-MCP and 1-MCP + ABA treatments were similar to that of NDGA,but less effective.ABA initiated the melon fruit ripening,involved in the process of ripening and softening by inducing the expression of genes related to enzymes of ethylene production.Ethylene mainly played a major role in late-ripening period,especially in forming of fruit flavor inherent material.
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Claims 10
Claim · model-written summary
Melon NCED was cloned.
- Taxon
- melon
.jpg?width=60)
Cucumis melot0 - Gene
- 9-cis-epoxycarotenoid dioxygenase gene(NCED)e0
- Outcome
- clonede0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“a key enzyme in ABA biosynthesis,9-cis-epoxycarotenoid dioxygenase gene(NCED),was cloned”
t0“melon”
t1“melon”
Claim · model-written summary
Melon fruit NCED expression was strong in early maturity.
- Taxon
- melonCucumis meloe0
- Organ / stage
- early-maturity periode0
- Gene
- NCED genee0
- Outcome
- expressed stronglye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NCED gene of melon fruit expressed strongly during early-maturity period”
Claim · model-written summary
Endogenous ABA peaked after NCED expression and then declined.
- Taxon
- melonCucumis melot0
- Gene
- NCED genee0
- Outcome
- content of endogenous ABAe0
- Direction
- declinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“content of endogenous ABA peaked after NCED gene expression,and then continued to decline”
t0“melon”
t1“melon”
Claim · model-written summary
Ethylene production, ACC content and ACO activity peaked about ten days after endogenous ABA.
- Taxon
- melonCucumis melot0
- Organ / stage
- early fruit maturitye0
- Outcome
- Ethylene production,ACC(1-aminocylopropane-1-carboxylic acid) content and ACO(ACC oxidase) activitye0
- Direction
- maximume0
- Value
- about 10 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene production,ACC(1-aminocylopropane-1-carboxylic acid) content and ACO(ACC oxidase) activity in the early fruit maturity is very low,their maximum value is about 10 days late than of endogenous ABA”
t0“melon”
t1“melon”
Claim · model-written summary
ABA treatment significantly advanced melon fruit ripening and softening by eight days versus control.
- Taxon
- melonCucumis melot0
- Treatment
- Exogenous ABA treatmente0
- Outcome
- fruit ripening and softeninge0
- Direction
- enhancede0
- Value
- eight dayse0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous ABA treatment significantly enhanced fruit ripening and softening.Those ripening-relation indexes were eight days earlier than that of the control”
t0“melon”
t1“melon”
Claim · model-written summary
NDGA delayed ripening-related indices.
- Taxon
- melonCucumis melot0
- Treatment
- NDGA treatmente0
- Outcome
- ripening-relation indexe0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NDGA treatment delayed the ripening-relation index”
t0“melon”
t1“melon”
Claim · model-written summary
1-MCP delayed ripening less effectively than NDGA.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of 1-MCP and 1-MCP + ABA treatments were similar to that of NDGA,but less effective”
t0“melon”
t1“melon”
Claim · model-written summary
1-MCP plus ABA delayed ripening less effectively than NDGA.
- Taxon
- melonCucumis melot0
- Treatment
- 1-MCP + ABAe0
- Outcome
- effecte0
- Direction
- less effectivee0
- Comparator
- NDGAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of 1-MCP and 1-MCP + ABA treatments were similar to that of NDGA,but less effective”
t0“melon”
t1“melon”
Claim · model-written summary
Authors assert ABA initiates ripening and softening by inducing ethylene-production enzyme genes.
- Taxon
- melonCucumis meloe0
- Compound
- ABAe0
- Outcome
- fruit ripeninge0
- Qualifier
- inducing the expression of genes related to enzymes of ethylene productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA initiated the melon fruit ripening,involved in the process of ripening and softening by inducing the expression of genes related to enzymes of ethylene production”
Claim · model-written summary
Authors assert ethylene mainly acts in late ripening, especially fruit flavor formation.
- Taxon
- melonCucumis melot0
- Organ / stage
- late-ripening periode0
- Compound
- Ethylenee0
- Outcome
- forming of fruit flavor inherent materiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene mainly played a major role in late-ripening period,especially in forming of fruit flavor inherent material”
t0“melon”
t1“melon”
The same questions in other papers
(+)-abscisic acid · quality: postharvest · Cucumis melo (muskmelon)Results agree
1 paper in the same direction as this paper
- positive
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.