Abstract
The carotenoid metabolism in tomato fruit in relation to high temperature inhibition of pigmentation was investigated with pericarp sections of tomato fruits stored at 20°C, 30°C, and 35°C. The pericarp sections were incubated with 2-14C-mevalonic acid for 10 hours at the same temperatures as the storage temperatures. When tomatoes were stored longer and at higher temperatures, the radioactivity of lycopene extracted from pericarp sections was low, whereas, that of β-carotene was high. The specific radioactivity of the carotenes decreased in order of the steps of carotenoid biosynthetic pathway, phytoene→lycopene→β-carotene, in all the sections of the fruit stored at each of the temperatures. We postulate from these results that high temperature inhibits the accumulation of lycopene in tomato fruit because the conversion of lycopene to β-carotene is stimulated instead.
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Claims 4
Claim · model-written summary
Radioactivity of lycopene from labelled mevalonate was low in pericarp sections of tomatoes stored longer at higher temperatures.
- Taxon
- tomatoes
Solanum lycopersicume1 - Organ / stage
- pericarp sectionse1
- Treatment
- stored longer and at higher temperaturese1
- Outcome
- radioactivity of lycopenee1
- Direction
- lowe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“When tomatoes were stored longer and at higher temperatures, the radioactivity of lycopene extracted from pericarp sections was low, whereas, that of β-carotene was high”
Claim · model-written summary
Radioactivity of β-carotene was high in pericarp sections of tomatoes stored longer at higher temperatures.
- Taxon
- tomatoesSolanum lycopersicume1
- Organ / stage
- pericarp sectionse1
- Treatment
- stored longer and at higher temperaturese1
- Outcome
- radioactivitye1
- Direction
- highe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“When tomatoes were stored longer and at higher temperatures, the radioactivity of lycopene extracted from pericarp sections was low, whereas, that of β-carotene was high”
Claim · model-written summary
Specific radioactivity of carotenes decreased along phytoene, lycopene and β-carotene in all fruit sections at each storage temperature.
- Taxon
- tomato fruitSolanum lycopersicume0
- Organ / stage
- sections of the fruite2
- Compound
- phytoene→lycopene→β-carotenee2
- Outcome
- specific radioactivity of the carotenese2
- Direction
- decreasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The carotenoid metabolism in tomato fruit in relation to high temperature inhibition of pigmentation was investigated with pericarp sections of tomato fruits stored at 20°C, 30°C, and 35°C”
e2“The specific radioactivity of the carotenes decreased in order of the steps of carotenoid biosynthetic pathway, phytoene→lycopene→β-carotene, in all the sections of the fruit stored at each of the temperatures”
Claim · model-written summary
High temperature may inhibit lycopene accumulation in tomato fruit because lycopene conversion to β-carotene is stimulated.
- Taxon
- tomato fruitSolanum lycopersicume3
- Treatment
- high temperaturee3
- Compound
- lycopenee3
- Outcome
- accumulation of lycopenee3
- Qualifier
- the conversion of lycopene to β-carotene is stimulatede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“high temperature inhibits the accumulation of lycopene in tomato fruit because the conversion of lycopene to β-carotene is stimulated instead”
The same questions in other papers
storage · quality: phytochemicals · Solanum lycopersicum (tomato)Positive and negative results
17 papers in the same direction as this paper · 43 in the opposite direction
- negative
- positive
- positive
57 papers more in this group
See all 61 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.