Abstract
We studied the influence of lysophosphatidylethanolamine (LPE) on the pattern and rate of ethylene production and respiration of tomato ( Lycopersicon esculentum cv. H7155) leaflets and fruit. Leaflets that had been senescing on the plant showed a climacteric‐like rise in ethylene production but not in respiration rate which decreased continuously with leaf age. Detached leaflets had a climacteric‐like pattern in respiration whether they were incubated in complete darkness or in light. Detached leaflets incubated in the dark had higher rates of ethylene production and CO 2 evolution than did light‐incubated leaves. There was no change in the pattern of ethylene production or CO 2 evolution as a result of LPE treatment. However, LPE‐treated attached and detached leaflets had consistently lower rates of CO 2 evolution. The reduction in CO 2 evolution by LPE was most pronounced at the climacteric‐like peak of the detached leaves. LPE‐treated leaflets had a higher chlorophyll content and fresh weight and lower electrolyte leakage than the control. LPE‐treated fruits had lower rates of ethylene and CO 2 production than did the control. LPE‐treated fruits also had higher pericarp firmness and lower electrolyte leakage than the control. The results of the present study provide evidence that LPE is able to retard senescence of attached leaves and detached leaves and tomato fruits. Several recent studies suggest that lysolipids can act in a specific manner as metabolic regulators. Our results suggest a specific role of lysolipid LPE in aging and senescence
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Claims 12
Claim · model-written summary
Lysophosphatidylethanolamine retards senescence of attached leaves, detached leaves and tomato fruits.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- LPEe1
- Outcome
- senescencee1
- Direction
- retarde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e1“The results of the present study provide evidence that LPE is able to retard senescence of attached leaves and detached leaves and tomato fruits”
Claim · model-written summary
LPE-treated leaflets had higher chlorophyll content and fresh weight than the control.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leafletse2
- Treatment
- LPEe2
- Outcome
- chlorophyll content and fresh weighte2
- Direction
- highere2
- Comparator
- the controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e2“LPE‐treated leaflets had a higher chlorophyll content and fresh weight and lower electrolyte leakage than the control”
Claim · model-written summary
LPE-treated leaflets had lower electrolyte leakage than the control.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leafletse2
- Treatment
- LPEe2
- Outcome
- electrolyte leakagee2
- Direction
- lowere2
- Comparator
- the controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e2“LPE‐treated leaflets had a higher chlorophyll content and fresh weight and lower electrolyte leakage than the control”
Claim · model-written summary
LPE-treated fruits had lower rates of ethylene and CO 2 production than the control.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- fruitse3
- Treatment
- LPEe3
- Outcome
- rates of ethylene and CO 2 productione3
- Direction
- lowere3
- Comparator
- the controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e3“LPE‐treated fruits had lower rates of ethylene and CO 2 production than did the control”
Claim · model-written summary
LPE-treated fruits had higher pericarp firmness than the control.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- fruitse4
- Treatment
- LPEe4
- Outcome
- pericarp firmnesse4
- Direction
- highere4
- Comparator
- the controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e4“LPE‐treated fruits also had higher pericarp firmness and lower electrolyte leakage than the control”
Claim · model-written summary
LPE-treated fruits had lower electrolyte leakage than the control.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- fruitse4
- Treatment
- LPEe4
- Outcome
- electrolyte leakagee4
- Direction
- lowere4
- Comparator
- the controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e4“LPE‐treated fruits also had higher pericarp firmness and lower electrolyte leakage than the control”
Claim · model-written summary
LPE-treated attached and detached leaflets had consistently lower rates of CO 2 evolution.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leafletse5
- Treatment
- LPEe5
- Outcome
- CO 2 evolutione5
- Direction
- lowere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e5“However, LPE‐treated attached and detached leaflets had consistently lower rates of CO 2 evolution”
Claim · model-written summary
LPE treatment caused no change in the pattern of ethylene production or CO 2 evolution.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- LPE treatmente6
- Outcome
- pattern of ethylene production or CO 2 evolutione6
- Direction
- no changee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e6“There was no change in the pattern of ethylene production or CO 2 evolution as a result of LPE treatment”
Claim · model-written summary
Detached leaflets incubated in the dark had higher rates of ethylene production and CO 2 evolution than light-incubated leaves.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leafletse7
- Treatment
- incubated in the darke7
- Outcome
- rates of ethylene production and CO 2 evolutione7
- Direction
- highere7
- Comparator
- light‐incubated leavese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e7“Detached leaflets incubated in the dark had higher rates of ethylene production and CO 2 evolution than did light‐incubated leaves”
Claim · model-written summary
Senescing leaflets on the plant showed a climacteric-like rise in ethylene production.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- Leafletse1
- Outcome
- rise in ethylene productione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e1“Leaflets that had been senescing on the plant showed a climacteric‐like rise in ethylene production but not in respiration rate which decreased continuously with leaf age”
Claim · model-written summary
Respiration rate of senescing leaflets decreased continuously with leaf age and showed no climacteric rise.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- Leafletse1
- Outcome
- respiration ratee1
- Direction
- decreased continuouslye1
- Qualifier
- with leaf agee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e1“Leaflets that had been senescing on the plant showed a climacteric‐like rise in ethylene production but not in respiration rate which decreased continuously with leaf age”
Claim · model-written summary
Detached leaflets showed a climacteric-like pattern in respiration in both darkness and light.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- Detached leafletse1
- Outcome
- pattern in respiratione1
- Qualifier
- whether they were incubated in complete darkness or in lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“retard tomato leaf and fruit senescence”
e1“Detached leaflets had a climacteric‐like pattern in respiration whether they were incubated in complete darkness or in light”
The same questions in other papers
lysophosphatidylethanolamine · quality: postharvest · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- positive
- 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.