Abstract
Drought stress can impact the physiological and biochemical properties of crops. However, selenium (Se) can effectively alleviate the abiotic stress experienced by plants. This study aims to investigate how applying selenium to tomato leaves affects their antioxidant system and photosynthetic traits when subjected to drought conditions. The experiment used four different foliar selenium concentrations and three different irrigation levels. The investigation scrutinized the effects of foliar spraying employing different selenium concentrations on the antioxidant system, osmotic adjustment substances, photosynthetic performance, and growth indices of tomatoes under drought stress. The findings indicated that drought stress led to cellular oxidative damage, significantly elevating peroxide, MDA, proline, and soluble sugar content (p < 0.001). Under severe drought stress, malondialdehyde (MDA) and proline levels increased by 21.2% and 110.0% respectively, compared to well-watered conditions. Concurrently, the net photosynthetic rate exhibited a reduction of 26.0% and dry matter accumulation decreased by 35.5%. However, after spraying with a low concentration of selenium, selenium reduced oxidative damage and malondialdehyde content by reducing the content of peroxide in leaves, restoring photosynthesis, and promoting the normal growth of tomato. Compared to the control group, spraying with 2.5 mg·L−1 selenium resulted in a 21.5% reduction in MDA content, a 111.8% increase in net photosynthetic rate, and a 29.0% increase in dry matter accumulation. When subjected to drought stress conditions, foliar spraying of low concentrations of selenium (2.5 mg·L−1) can effectively reduce oxidative damage caused by drought stress and alleviate growth constraints in tomatoes. In addition, treatments with high selenium concentrations exhibited specific toxic effects. These findings offer valuable insights into the mechanisms governing selenium-induced drought tolerance in tomatoes, thus advancing our comprehension of standard tomato production practices.
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Claims 12
Claim · model-written summary
Drought stress significantly increased peroxide content.
- Taxon
- Tomatoes
Solanum lycopersicumt0 - Treatment
- drought stresse3
- Outcome
- peroxidee3
- Direction
- elevatinge3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e3“drought stress led to cellular oxidative damage, significantly elevating peroxide, MDA, proline, and soluble sugar content (p < 0.001)”
Claim · model-written summary
Drought stress significantly increased soluble sugar content.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- drought stresse3
- Outcome
- soluble sugar contente3
- Direction
- elevatinge3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e3“drought stress led to cellular oxidative damage, significantly elevating peroxide, MDA, proline, and soluble sugar content (p < 0.001)”
Claim · model-written summary
Under severe drought, MDA increased by 21.2% compared to well-watered conditions.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- severe drought stresse1
- Outcome
- malondialdehyde (MDA)e1
- Direction
- increasede1
- Value
- 21.2%e1
- Comparator
- well-watered conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e1“Under severe drought stress, malondialdehyde (MDA) and proline levels increased by 21.2% and 110.0% respectively, compared to well-watered conditions”
Claim · model-written summary
Under severe drought, proline increased by 110.0% compared to well-watered conditions.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- severe drought stresse1
- Outcome
- proline levelse1
- Direction
- increasede1
- Value
- 110.0%e1
- Comparator
- well-watered conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e1“Under severe drought stress, malondialdehyde (MDA) and proline levels increased by 21.2% and 110.0% respectively, compared to well-watered conditions”
Claim · model-written summary
Under severe drought, the net photosynthetic rate was reduced by 26.0% compared to well-watered conditions.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- severe drought stresse1
- Outcome
- net photosynthetic ratee2
- Direction
- reductione2
- Value
- 26.0%e2
- Comparator
- well-watered conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e1“Under severe drought stress, malondialdehyde (MDA) and proline levels increased by 21.2% and 110.0% respectively, compared to well-watered conditions”
e2“Concurrently, the net photosynthetic rate exhibited a reduction of 26.0% and dry matter accumulation decreased by 35.5%”
Claim · model-written summary
Under severe drought, dry matter accumulation decreased by 35.5% compared to well-watered conditions.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- severe drought stresse1
- Outcome
- dry matter accumulatione2
- Direction
- decreasede2
- Value
- 35.5%e2
- Comparator
- well-watered conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e1“Under severe drought stress, malondialdehyde (MDA) and proline levels increased by 21.2% and 110.0% respectively, compared to well-watered conditions”
e2“Concurrently, the net photosynthetic rate exhibited a reduction of 26.0% and dry matter accumulation decreased by 35.5%”
Claim · model-written summary
Spraying 2.5 mg·L−1 selenium reduced MDA content by 21.5% compared to the control group.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- spraying with 2.5 mg·L−1 seleniume4
- Outcome
- MDA contente4
- Direction
- reductione4
- Value
- 21.5%e4
- Comparator
- control groupe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e4“Compared to the control group, spraying with 2.5 mg·L−1 selenium resulted in a 21.5% reduction in MDA content, a 111.8% increase in net photosynthetic rate, and a 29.0% increase in dry matter accumulation”
Claim · model-written summary
Spraying 2.5 mg·L−1 selenium increased net photosynthetic rate by 111.8% compared to the control group.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- spraying with 2.5 mg·L−1 seleniume4
- Outcome
- net photosynthetic ratee4
- Direction
- increasee4
- Value
- 111.8%e4
- Comparator
- control groupe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e4“Compared to the control group, spraying with 2.5 mg·L−1 selenium resulted in a 21.5% reduction in MDA content, a 111.8% increase in net photosynthetic rate, and a 29.0% increase in dry matter accumulation”
Claim · model-written summary
Spraying 2.5 mg·L−1 selenium increased dry matter accumulation by 29.0% compared to the control group.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- spraying with 2.5 mg·L−1 seleniume4
- Outcome
- dry matter accumulatione4
- Direction
- increasee4
- Value
- 29.0%e4
- Comparator
- control groupe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e4“Compared to the control group, spraying with 2.5 mg·L−1 selenium resulted in a 21.5% reduction in MDA content, a 111.8% increase in net photosynthetic rate, and a 29.0% increase in dry matter accumulation”
Claim · model-written summary
Foliar spraying of low selenium concentrations can effectively reduce drought-caused oxidative damage (author interpretation).
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- foliar spraying of low concentrations of selenium (2.5 mg·L−1)e5
- Outcome
- oxidative damagee5
- Direction
- reducee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e5“When subjected to drought stress conditions, foliar spraying of low concentrations of selenium (2.5 mg·L−1) can effectively reduce oxidative damage caused by drought stress and alleviate growth constraints in tomatoes”
Claim · model-written summary
Foliar spraying of low selenium concentrations can alleviate drought-related growth constraints (author interpretation).
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- foliar spraying of low concentrations of selenium (2.5 mg·L−1)e5
- Outcome
- growth constraintse5
- Direction
- alleviatee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e5“When subjected to drought stress conditions, foliar spraying of low concentrations of selenium (2.5 mg·L−1) can effectively reduce oxidative damage caused by drought stress and alleviate growth constraints in tomatoes”
Claim · model-written summary
High selenium concentrations exhibited specific toxic effects.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- high selenium concentrationse6
- Outcome
- specific toxic effectse6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomatoes”
e6“In addition, treatments with high selenium concentrations exhibited specific toxic effects”
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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.