Abstract
Abstract The flavonol content of Arabidopsis thaliana and tomato seedlings was assessed in conditions of reduced nitrogen or phosphorus availability. In both systems, a significant inverse relationship was observed between nutrient availability and flavonol accumulation, with nitrogen limitation promoting the greatest increase in flavonols. A trial was established to determine the effects of decreased nitrogen and phosphorus availability on the flavonol content of leaf and fruit tissues of tomato plants ( Lycopersicon esculentum cv. Chaser) in a commercial situation. Nutrients were supplied by a hydroponic system with nutrient regimes designed to provide the highest and lowest nitrogen and phosphorus levels with which it is possible to support plant growth and fruit set. Fruiting was abundant and tomato fruits were harvested at mature green, breaker and red stages of ripening; leaves were also harvested from the tops of the plants. All tissues were analysed for flavonol content using reversed‐phase high‐performance liquid chromatography. Flavonol accumulation in the leaves of mature tomato plants was found to increase significantly in response to nitrogen stress, whereas phosphorus deficiency did not elicit this response. Reduced nitrogen availability had no consistent effect on the flavonol content of tomato fruits. Phosphorus deficiency elicited an increase in flavonol content in early stages of ripening. Effects of nutrient stress on the flavonol content of tomato fruits were lost as ripening progressed. The findings suggest that nutrient status may be employed to manipulate the flavonol content of vegetative tissues but cannot be used to elevate the flavonol content of tomato fruit.
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Claims 10
Claim · model-written summary
Lower nutrient availability was significantly associated with greater flavonol accumulation in Arabidopsis thaliana seedlings.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Organ / stage
- seedlingse0
- Treatment
- reduced nitrogen or phosphorus availabilitye0
- Outcome
- flavonol accumulatione0
- Direction
- inverse relationshipe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The flavonol content of Arabidopsis thaliana and tomato seedlings was assessed in conditions of reduced nitrogen or phosphorus availability. In both systems, a significant inverse relationship was observed between nutrient availability and flavonol accumulation”
Claim · model-written summary
Lower nutrient availability was significantly associated with greater flavonol accumulation in tomato seedlings.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- seedlingse0
- Treatment
- reduced nitrogen or phosphorus availabilitye0
- Outcome
- flavonol accumulatione0
- Direction
- inverse relationshipe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The flavonol content of Arabidopsis thaliana and tomato seedlings was assessed in conditions of reduced nitrogen or phosphorus availability. In both systems, a significant inverse relationship was observed between nutrient availability and flavonol accumulation”
Claim · model-written summary
Nitrogen limitation produced the greatest increase in seedling flavonols in both systems.
Not reportedTaxonComparator
Verbatim
e0“In both systems, a significant inverse relationship was observed between nutrient availability and flavonol accumulation, with nitrogen limitation promoting the greatest increase in flavonols”
Claim · model-written summary
Nitrogen stress significantly increased flavonol accumulation in mature tomato leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- nitrogen stresse0
- Outcome
- Flavonol accumulatione0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flavonol accumulation in the leaves of mature tomato plants was found to increase significantly in response to nitrogen stress”
Claim · model-written summary
Phosphorus deficiency did not increase flavonol accumulation in mature tomato leaves.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- phosphorus deficiencye0
- Outcome
- Flavonol accumulatione0
- Direction
- did not elicit this responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flavonol accumulation in the leaves of mature tomato plants was found to increase significantly in response to nitrogen stress, whereas phosphorus deficiency did not elicit this response”
Claim · model-written summary
Reduced nitrogen availability had no consistent effect on tomato fruit flavonols.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- fruitse0
- Treatment
- Reduced nitrogen availabilitye0
- Outcome
- flavonol contente0
- Direction
- no consistent effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduced nitrogen availability had no consistent effect on the flavonol content of tomato fruits”
Claim · model-written summary
Phosphorus deficiency increased flavonols in early ripening stages.
- Organ / stage
- early stages of ripeninge0
- Treatment
- Phosphorus deficiencye0
- Outcome
- flavonol contente0
- Direction
- increasee0
Not reportedTaxonComparator
Verbatim
e0“Phosphorus deficiency elicited an increase in flavonol content in early stages of ripening”
Claim · model-written summary
Nutrient stress effects on fruit flavonols disappeared as ripening advanced.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- fruitse0
- Outcome
- Effects of nutrient stress on the flavonol contente0
- Direction
- loste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of nutrient stress on the flavonol content of tomato fruits were lost as ripening progressed”
Claim · model-written summary
The authors suggest using nutrient status to manipulate flavonols in vegetative tissues.
- Outcome
- manipulate the flavonol content of vegetative tissuese0
Not reportedTaxon
Verbatim
e0“nutrient status may be employed to manipulate the flavonol content of vegetative tissues”
Claim · model-written summary
The authors conclude nutrient status cannot elevate tomato fruit flavonols.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- fruite0
- Outcome
- elevate the flavonol contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cannot be used to elevate the flavonol content of tomato fruit”
The same questions in other papers
phosphorus · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 15 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
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See all 22 papers →nitrogen · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
25 papers in the same direction as this paper · 18 in the opposite direction · 2 reporting no difference from an alternative
- negative
- positive
- negative
42 papers more in this group
See all 46 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.