Abstract
The phytohormone jasmonic acid (JA) regulates the synthesis of secondary metabolites in a wide range of plant species. Here, we show that exogenous methyl-JA (MeJA) elicits massive accumulation of caffeoylputrescine (CP) in tomato leaves. A mutant (jai1) that is defective in jasmonate perception failed to accumulate CP in flowers and MeJA-treated leaves. Conversely, a transgenic tomato line (called 35S::PS) that exhibits constitutive JA signaling accumulated high levels of leaf CP in the absence of jasmonate treatment. RNA blot analysis showed that genes encoding enzymes in the phenylpropanoid and polyamine pathways for CP biosynthesis are upregulated in MeJA-treated wild-type plants and in untreated 35S::PS plants. These results indicate that CP accumulation in tomato is tightly controlled by the jasmonate signaling pathway, and provide proof-of-concept that the production of some plant secondary metabolites can be enhanced by transgenic manipulation of endogenous JA levels.
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Claims 6
Claim · model-written summary
Exogenous methyl-JA elicited massive caffeoylputrescine accumulation in tomato leaves.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- exogenous methyl-JA (MeJA)e0
- Outcome
- accumulation of caffeoylputrescine (CP)e0
- Direction
- massivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous methyl-JA (MeJA) elicits massive accumulation of caffeoylputrescine (CP) in tomato leaves”
Claim · model-written summary
The jai1 mutant failed to accumulate caffeoylputrescine in flowers and MeJA-treated leaves.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- jai1e0
- Organ / stage
- flowers and MeJA-treated leavese0
- Outcome
- failed to accumulate CPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A mutant (jai1) that is defective in jasmonate perception failed to accumulate CP in flowers and MeJA-treated leaves”
t0“tomato”
Claim · model-written summary
The 35S::PS transgenic tomato line accumulated high leaf caffeoylputrescine without jasmonate treatment.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- 35S::PSe0
- Outcome
- high levels of leaf CPe0
- Qualifier
- in the absence of jasmonate treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a transgenic tomato line (called 35S::PS) that exhibits constitutive JA signaling accumulated high levels of leaf CP in the absence of jasmonate treatment”
Claim · model-written summary
Genes encoding enzymes in the phenylpropanoid and polyamine pathways were upregulated in MeJA-treated wild-type plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MeJA-treatede0
- Gene
- genes encoding enzymes in the phenylpropanoid and polyamine pathwayse0
- Outcome
- genes encoding enzymes in the phenylpropanoid and polyamine pathways for CP biosynthesise0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genes encoding enzymes in the phenylpropanoid and polyamine pathways for CP biosynthesis are upregulated in MeJA-treated wild-type plants and in untreated 35S::PS plants”
t0“tomato”
Claim · model-written summary
Genes encoding CP biosynthesis enzymes were upregulated in untreated 35S::PS plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- 35S::PSe0
- Gene
- genes encoding enzymes in the phenylpropanoid and polyamine pathwayse0
- Outcome
- genes encoding enzymes in the phenylpropanoid and polyamine pathways for CP biosynthesise0
- Direction
- upregulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genes encoding enzymes in the phenylpropanoid and polyamine pathways for CP biosynthesis are upregulated in MeJA-treated wild-type plants and in untreated 35S::PS plants”
t0“tomato”
Claim · model-written summary
Caffeoylputrescine accumulation in tomato is tightly controlled by jasmonate signaling.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- CP accumulatione0
- Qualifier
- jasmonate signaling pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CP accumulation in tomato is tightly controlled by the jasmonate signaling pathway”
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
- positive
- no effect
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.