Abstract
• Evidence is emerging to support the notion that in response to herbivory, plants undergo changes in their primary metabolism and are able to fine-tune the allocation of new and existing resources and temporarily direct them to storage organs. • We hypothesized that simulated herbivory increases the export of resources out of the affected tissues and increases allocation to roots. We used short-lived radioisotopes to study in vivo the dynamics of newly incorporated (11)CO(2) and (13)NH(3). Methyl jasmonate (MeJA), a known defense elicitor, was applied to the foliage of tomato plants and 4 h later we monitored leaf uptake, export and whole-plant allocation of [(11)C]photosynthate and [(13)N]amino acids. • There was a marginally significant decrease in the fixation of (11)CO(2), and an increase in the export of newly acquired carbon and nitrogen out of MeJA-treated leaves. The proportion of nitrogen allocated to roots increased, whereas the proportion of carbon did not change. • These results are in agreement with our hypotheses, showing a change in the allocation of resources after treatment with MeJA; this may reduce the chance of resources being lost to herbivores and act as a buffer to biotic stress by increasing the potential for plant regrowth and survival after the attack.
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Claims 4
Claim · model-written summary
MeJA marginally decreased carbon dioxide fixation.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Methyl jasmonate (MeJA)e0
- Outcome
- fixation of (11)CO(2)e0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Methyl jasmonate (MeJA), a known defense elicitor, was applied to the foliage of tomato plants and 4 h later we monitored leaf uptake, export and whole-plant allocation of [(11)C]photosynthate and [(13)N]amino acids. • There was a marginally significant decrease in the fixation of (11)CO(2)”
Claim · model-written summary
MeJA increased export of newly acquired carbon and nitrogen from treated leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- Methyl jasmonate (MeJA)e0
- Outcome
- export of newly acquired carbon and nitrogene0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Methyl jasmonate (MeJA), a known defense elicitor, was applied to the foliage of tomato plants and 4 h later we monitored leaf uptake, export and whole-plant allocation of [(11)C]photosynthate and [(13)N]amino acids. • There was a marginally significant decrease in the fixation of (11)CO(2), and an increase in the export of newly acquired carbon and nitrogen out of MeJA-treated leaves”
Claim · model-written summary
MeJA increased nitrogen allocation to roots.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- proportion of nitrogen allocated to rootse0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proportion of nitrogen allocated to roots increased”
t0“tomato”
Claim · model-written summary
MeJA did not change carbon allocation proportion.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- proportion of carbone0
- Direction
- did not changee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas the proportion of carbon did not change”
t0“tomato”
The same questions in other papers
(-)-methyl jasmonate · molecular: metabolites · Solanum lycopersicum (tomato)Results differ
12 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- negative
13 papers more in this group
See all 17 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.