Abstract
Mercury (Hg) availability in soil and its absorption in plants is seriously concerned for plant production and human health. Salicylic acid (SA) is one of the major plant hormones involved in plant growth and development under biotic and abiotic stress conditions. So, the experiment was designed to assess the effect of SA on sweet pepper (Capsicum annum L.) seedlings grown under different Hg toxicity concentrations. Spraying of 100 μM SA at three different Hg levels, i.e., 0 μM, 50 μM, 100 μM, and 150 μM. The maximum decrease in photosynthetic machinery, plant growth attributes (shoot length, root length, no. of leaves, fresh and dry biomass (shoot and root)), and more accumulation of Hg in leaves, roots, and fruits of sweet pepper. Additionally, SA significantly reduced the reduction in photosynthetic attributes and plant growth, and increased antioxidant enzymes (SOD, POD, and CAT) under Hg toxicity. H2O2 was found to be lower in plants treated with SA under Hg toxicity than in non-treated plants. The SA application also restricts the accumulation of Hg in sweet pepper roots, leaves, and fruits. Hg translocation in leaves and fruits was also reduced under SA. These findings provide a novel perspective on Hg accumulation in sweet pepper. They open a door to identify SA signaling pathways to clarify the mechanisms of SA in hibiting Hg accumulation in leaves and fruits.
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Claims 7
Claim · model-written summary
SA significantly reduced the reduction in photosynthetic attributes and plant growth under Hg toxicity
- Taxon
- sweet pepper
Capsicum annuumt0 - Treatment
- SAe1
- Outcome
- reduction in photosynthetic attributes and plant growthe1
- Direction
- reducede1
- Qualifier
- under Hg toxicitye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweet pepper (Capsicum annum L.)”
e1“Additionally, SA significantly reduced the reduction in photosynthetic attributes and plant growth, and increased antioxidant enzymes (SOD, POD, and CAT) under Hg toxicity”
Claim · model-written summary
SA increased antioxidant enzymes SOD, POD and CAT under Hg toxicity
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- SAe1
- Gene
- SOD, POD, and CATe1
- Outcome
- antioxidant enzymese1
- Direction
- increasede1
- Qualifier
- under Hg toxicitye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweet pepper (Capsicum annum L.)”
e1“Additionally, SA significantly reduced the reduction in photosynthetic attributes and plant growth, and increased antioxidant enzymes (SOD, POD, and CAT) under Hg toxicity”
Claim · model-written summary
H2O2 was lower in SA-treated sweet pepper plants than in non-treated plants under Hg toxicity
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- SAe2
- Outcome
- H2O2e2
- Direction
- lowere2
- Qualifier
- under Hg toxicitye2
- Comparator
- non-treated plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweet pepper (Capsicum annum L.)”
e2“H2O2 was found to be lower in plants treated with SA under Hg toxicity than in non-treated plants”
Claim · model-written summary
SA application restricted Hg accumulation in sweet pepper roots, leaves and fruits
- Taxon
- sweet pepperCapsicum annuume3
- Organ / stage
- roots, leaves, and fruitse3
- Treatment
- SA applicatione3
- Outcome
- accumulation of Hge3
- Direction
- restrictse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The SA application also restricts the accumulation of Hg in sweet pepper roots, leaves, and fruits”
Claim · model-written summary
SA reduced Hg translocation in sweet pepper leaves and fruits
- Taxon
- sweet pepperCapsicum annuumt0
- Organ / stage
- leaves and fruitse4
- Treatment
- SAe4
- Outcome
- Hg translocatione4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweet pepper (Capsicum annum L.)”
e4“Hg translocation in leaves and fruits was also reduced under SA”
Claim · model-written summary
Higher Hg levels increased Hg accumulation in sweet pepper leaves, roots and fruits compared with 0 μM Hg
- Taxon
- sweet pepperCapsicum annuumt0
- Organ / stage
- leaves, roots, and fruitse5
- Treatment
- different Hg levelse6
- Outcome
- accumulation of Hge5
- Direction
- moree5
- Comparator
- 0 μMe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweet pepper (Capsicum annum L.)”
e5“The maximum decrease in photosynthetic machinery, plant growth attributes (shoot length, root length, no. of leaves, fresh and dry biomass (shoot and root)), and more accumulation of Hg in leaves, roots, and fruits of sweet pepper”
e6“Spraying of 100 μM SA at three different Hg levels, i.e., 0 μM, 50 μM, 100 μM, and 150 μM”
Claim · model-written summary
Hg levels caused the maximum decrease in photosynthetic machinery and plant growth attributes of sweet pepper compared with 0 μM Hg
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- different Hg levelse6
- Outcome
- photosynthetic machinery, plant growth attributese5
- Direction
- maximum decreasee5
- Comparator
- 0 μMe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sweet pepper (Capsicum annum L.)”
e5“The maximum decrease in photosynthetic machinery, plant growth attributes (shoot length, root length, no. of leaves, fresh and dry biomass (shoot and root)), and more accumulation of Hg in leaves, roots, and fruits of sweet pepper”
e6“Spraying of 100 μM SA at three different Hg levels, i.e., 0 μM, 50 μM, 100 μM, and 150 μM”
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See all 7 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.