Abstract
Abstract In a 2‐year study, we manipulated flower chemistry of field grown Lycopersicon esculentum in North Florida and examined subsequent effects on populations of Frankliniella occidentalis . We examined variation in amino‐acid profiles and total nitrogen concentrations of flowers, flower number and plant size seasonally and in response to variable rates of nitrogen fertilization ( 202 kg ha −1 and 309 kg ha −1 ). Populations of F. occidentalis sampled every 6 to 10 days were then related to seasonal and treatment effects on plant variables. For both years, F. occidentalis was abundant on L. esculentum tomatoes for only short intervals (2–3 weeks), and populations were significantly higher on hosts receiving higher rates of nitrogen fertilization. Seasonal trends in F. occidentalis on L. esculentum were correlated to number of flowers per host plant, as well as concentrations of total nitrogen in flowers. Moreover, treatment (fertilization) effects were consistent with changes in the nitrogen status of flowers. Plants subjected to higher fertilization rates produced flowers that had higher nitrogen content as well as variations in amino‐acid profiles during the period of peak thrips populations. Abundance of F. occidentalis (particularly adult females) were most highly correlated to flower concentrations of phenylalanine during population peaks. Our results are consistent with beneficial effects of high dietary nitrogen to thrips populations, and also support the hypothesis that aromatic amino acids (e.g., phenylalanine) play a central role in the nutritional ecology of F. occidentalis .
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Claims 7
Claim · model-written summary
Thrips were abundant on tomato only for short intervals of two to three weeks.
- Taxon
- L. esculentum
Solanum lycopersicume0 - Interactor
- F. occidentalis
Frankliniella occidentalise0pest - Outcome
- F. occidentalis was abundante0
- Value
- 2–3 weekse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F. occidentalis was abundant on L. esculentum tomatoes for only short intervals (2–3 weeks)”
Claim · model-written summary
Thrips populations were significantly higher on tomatoes receiving higher nitrogen fertilization.
- Taxon
- Lycopersicon esculentumSolanum lycopersicumt0
- Treatment
- higher rates of nitrogen fertilizatione0
- Interactor
- Frankliniella occidentalisFrankliniella occidentalist0pest
- Outcome
- populationse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“populations were significantly higher on hosts receiving higher rates of nitrogen fertilization”
t0“Frankliniella occidentalis feeding on Lycopersicon esculentum”
Claim · model-written summary
Seasonal thrips abundance correlated with tomato flower number.
- Taxon
- L. esculentumSolanum lycopersicume0
- Organ / stage
- flowerse0
- Interactor
- F. occidentalisFrankliniella occidentalise0pest
- Outcome
- Seasonal trends in F. occidentalise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seasonal trends in F. occidentalis on L. esculentum were correlated to number of flowers per host plant”
Claim · model-written summary
Seasonal thrips abundance correlated with total nitrogen in tomato flowers.
- Taxon
- L. esculentumSolanum lycopersicume0
- Interactor
- F. occidentalisFrankliniella occidentalise0pest
- Compound
- total nitrogene0
- Outcome
- Seasonal trends in F. occidentalise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seasonal trends in F. occidentalis on L. esculentum were correlated to number of flowers per host plant, as well as concentrations of total nitrogen in flowers”
Claim · model-written summary
Higher fertilization increased tomato flower nitrogen content during peak thrips populations.
- Taxon
- Lycopersicon esculentumSolanum lycopersicumt0
- Organ / stage
- flowerse0
- Treatment
- higher fertilization ratese0
- Outcome
- nitrogen contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants subjected to higher fertilization rates produced flowers that had higher nitrogen content as well as variations in amino‐acid profiles during the period of peak thrips populations”
t0“Lycopersicon esculentum”
Claim · model-written summary
Higher fertilization altered tomato flower amino acid profiles during peak thrips populations.
- Taxon
- Lycopersicon esculentumSolanum lycopersicumt0
- Organ / stage
- flowerse0
- Treatment
- higher fertilization ratese0
- Outcome
- variations in amino‐acid profilese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants subjected to higher fertilization rates produced flowers that had higher nitrogen content as well as variations in amino‐acid profiles during the period of peak thrips populations”
t0“Lycopersicon esculentum”
Claim · model-written summary
Peak thrips abundance, especially adult females, correlated most strongly with flower phenylalanine concentrations.
- Taxon
- Lycopersicon esculentumSolanum lycopersicumt0
- Interactor
- F. occidentalisFrankliniella occidentalise0pest
- Compound
- phenylalaninee0
- Outcome
- Abundance of F. occidentalise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abundance of F. occidentalis (particularly adult females) were most highly correlated to flower concentrations of phenylalanine during population peaks”
t0“Lycopersicon esculentum”
The same questions in other papers
fertilization · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
44 papers in the same direction as this paper · 226 in the opposite direction
- positive
- positive
- positive
267 papers more in this group
See all 271 papers →fertilization · Frankliniella occidentalis · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- negative
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.