Abstract
This study evaluated the effect of increasing manganese (Mn) nutrition on the content of antioxidative compounds such as vitamin C, lycopene and polyphenols, and the antioxidant activity of tomato (Lycopersicon esculentum Mill., cvs ‘Alboney F1’ and ‘Emotion F1’) fruit. Plants were grown in rockwool using a nutrient solution with the following content of Mn (mg dm–3): 0.0, 0.3, 0.6, 1.2, 2.4, 4.8, 9.6 and 19.2. The level of vitamin C and lycopene decreased with the increasing Mn nutrition. Since the colour of fruits was correlated with the change in carotenoid content, the decrease in lycopene content promoted the reduction of redness and increase of yellowness of fruits. However, total polyphenol content and antioxidant activity significantly increased when plant were exposed to toxic levels of Mn. Observed changes could be the result of the oxidative stress induced by high concentrations of Mn. Polyphenolic compounds play a crucial role in the plant’s response to Mn stress and affect predominantly the total antioxidant properties of fruits, which could be used as a source of phenolics. Moreover, total phenolic content measurement, as an easy and inexpensive method, could be used as an indicator of Mn-induced stress in fruits of tomato.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Increasing Mn nutrition decreased tomato fruit vitamin C.
- Taxon
- tomato
Solanum lycopersicumt0 - Organ / stage
- fruitt0
- Treatment
- increasing Mn nutritione0
- Outcome
- level of vitamin Ce0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The level of vitamin C and lycopene decreased with the increasing Mn nutrition.”
e1“The level of vitamin C and lycopene decreased with the increasing Mn nutrition.”
t0“tomato fruit”
Claim · model-written summary
Increasing Mn nutrition decreased tomato fruit lycopene.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- fruitt0
- Treatment
- increasing Mn nutritione0
- Outcome
- lycopenee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The level of vitamin C and lycopene decreased with the increasing Mn nutrition.”
e1“The level of vitamin C and lycopene decreased with the increasing Mn nutrition.”
t0“tomato fruit”
Claim · model-written summary
Lower lycopene content reduced tomato fruit redness.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- reduction of rednesse0
- Direction
- reductione0
- Qualifier
- decrease in lycopene contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease in lycopene content promoted the reduction of redness and increase of yellowness of fruits.”
e1“the decrease in lycopene content promoted the reduction of redness and increase of yellowness of fruits.”
t0“tomato fruit”
Claim · model-written summary
Lower lycopene content increased tomato fruit yellowness.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- yellowness of fruitse0
- Direction
- increasee0
- Qualifier
- decrease in lycopene contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease in lycopene content promoted the reduction of redness and increase of yellowness of fruits.”
e1“the decrease in lycopene content promoted the reduction of redness and increase of yellowness of fruits.”
t0“tomato fruit”
Claim · model-written summary
Toxic Mn levels significantly increased total fruit polyphenol content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- toxic levels of Mne0
- Outcome
- total polyphenol contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total polyphenol content and antioxidant activity significantly increased when plant were exposed to toxic levels of Mn.”
e1“total polyphenol content and antioxidant activity significantly increased when plant were exposed to toxic levels of Mn.”
t0“tomato fruit”
Claim · model-written summary
Toxic Mn levels significantly increased fruit antioxidant activity.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- toxic levels of Mne0
- Outcome
- antioxidant activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total polyphenol content and antioxidant activity significantly increased when plant were exposed to toxic levels of Mn.”
e1“total polyphenol content and antioxidant activity significantly increased when plant were exposed to toxic levels of Mn.”
t0“tomato fruit”
Claim · model-written summary
The authors suggest total phenolic content as a tomato fruit Mn-stress indicator.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- total phenolic content measuremente0
- Qualifier
- indicator of Mn-induced stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total phenolic content measurement, as an easy and inexpensive method, could be used as an indicator of Mn-induced stress in fruits of tomato.”
e1“total phenolic content measurement, as an easy and inexpensive method, could be used as an indicator of Mn-induced stress in fruits of tomato.”
The same questions in other papers
manganese atom · quality: phytochemicals · Solanum lycopersicum (tomato)Positive and negative results
4 in the opposite direction
- no effect
- negative
- no effect
1 paper more in this group
See all 5 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.