Abstract
Summary Plants develop systemic defense responses upon exposure to pathogens or wounding by herbivores. Lipids and lipid metabolites have previously been implicated in induction of defense molecules during plant responses to physical wounding. Possible involvement of changes in lipid composition in systemic wound signal transduction was examined in leaves of seedlings of several different plant species. In the wounded tomato leaf, phosphatidic acid increased approximately fourfold within 5 min whereas lysophosphatidylcholine and lysophosphatidylethanolamine increased over twofold within 15 min of wounding. Similar changes in these lipids were observed in the neighboring non‐wounded leaf. In broad bean, soybean, sunflower and pepper seedlings phosphatidic acid levels increased rapidly and systemically upon wounding. The results suggest that the role of phospholipid hydrolysis and accumulation of lipid metabolites in the early events are responsible for systemic wound signal transduction in plants. Furthermore, they indicate that the wound signal propagates outside the wounded leaf within 5 min in these plants.
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Claims 5
Claim · model-written summary
Tomato phosphatidic acid rose about fourfold within 5 min of wounding.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- leafe0
- Treatment
- woundede0
- Outcome
- phosphatidic acide0
- Direction
- increasede0
- Value
- approximately fourfolde0
- Qualifier
- within 5 mine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the wounded tomato leaf, phosphatidic acid increased approximately fourfold within 5 min”
Claim · model-written summary
Tomato lysophosphatidylcholine and lysophosphatidylethanolamine rose over twofold within 15 min.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- woundinge0
- Outcome
- lysophosphatidylcholine and lysophosphatidylethanolaminee0
- Direction
- increasede0
- Value
- over twofolde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lysophosphatidylcholine and lysophosphatidylethanolamine increased over twofold within 15 min of wounding”
t0“wounded plants”
e2“In the wounded tomato leaf”
Claim · model-written summary
Similar lipid changes occurred in neighboring non-wounded tomato leaves.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- neighboring non‐wounded leafe0
- Outcome
- Similar changes in these lipidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar changes in these lipids were observed in the neighboring non‐wounded leaf”
e1“In the wounded tomato leaf”
Claim · model-written summary
Broad bean, soybean, sunflower and pepper phosphatidic acid rose rapidly and systemically after wounding.
- Taxon
- broad bean, soybean, sunflower and peppere0
- Treatment
- woundinge0
- Outcome
- phosphatidic acid levelse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“In broad bean, soybean, sunflower and pepper seedlings phosphatidic acid levels increased rapidly and systemically upon wounding”
Claim · model-written summary
The authors infer wound signals propagate beyond the wounded leaf within 5 min.
- Taxon
- plantsViridiplantaee0
- Outcome
- wound signal propagates outside the wounded leafe0
- Qualifier
- within 5 mine0
Verbatim
e0“the wound signal propagates outside the wounded leaf within 5 min in these plants”
The same questions in other papers
mechanical · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
6 papers more in this group
See all 10 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.