Abstract
The important role of salicylic acid in response to different stresses is to modify and decrease the negative effects of stress. The objective of this study was to evaluate the amelioration of heavy-metal (HM) stress in cauliflower cv. Shubra by application of different concentrations of salicylic acid. In heavy-metal (cobalt, nickel, cadmium, chromium, and lead) stress, apart from appearance of visual symptoms, HM toxicity reduced dry weight and specific activity of catalase and increased the concentration of lipid peroxidation, proline, nonprotein thiol, electrolyte leakage percentage, and specific activity of peroxidase and superoxidase dismutase. Application of salicylic acid reverts back all parameters disturbed by HM stress. As opposed to other HMs, salicylic acid enhanced chromium toxicity effects in plants, showing synergism and the plants died. Application of salicylic acid (100 mM) ameliorated toxic effects of HMs to some extent, showing antagonism in cauliflower.
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Claims 7
Claim · model-written summary
Heavy metal stress reduced cauliflower dry weight and catalase specific activity.
- Taxon
- Cauliflower
Brassica oleracea var. botrytist0 - Treatment
- HM toxicitye0
- Outcome
- dry weight and specific activity of catalasee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HM toxicity reduced dry weight and specific activity of catalase”
t0“Cauliflower”
Claim · model-written summary
Heavy metal stress increased lipid peroxidation, proline and nonprotein thiol concentrations.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- heavy-metal (cobalt, nickel, cadmium, chromium, and lead) stresse1
- Outcome
- concentration of lipid peroxidation, proline, nonprotein thiole0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the concentration of lipid peroxidation, proline, nonprotein thiol”
t0“Cauliflower”
e1“heavy-metal (cobalt, nickel, cadmium, chromium, and lead) stress”
Claim · model-written summary
Heavy metal stress increased electrolyte leakage percentage.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- heavy-metal (cobalt, nickel, cadmium, chromium, and lead) stresse1
- Outcome
- electrolyte leakage percentagee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the concentration of lipid peroxidation, proline, nonprotein thiol, electrolyte leakage percentage, and specific activity of peroxidase and superoxidase dismutase.”
t0“Cauliflower”
e1“heavy-metal (cobalt, nickel, cadmium, chromium, and lead) stress”
Claim · model-written summary
Heavy metal stress increased peroxidase and superoxidase dismutase specific activity.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- heavy-metal (cobalt, nickel, cadmium, chromium, and lead) stresse1
- Outcome
- specific activity of peroxidase and superoxidase dismutasee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the concentration of lipid peroxidation, proline, nonprotein thiol, electrolyte leakage percentage, and specific activity of peroxidase and superoxidase dismutase.”
t0“Cauliflower”
e1“heavy-metal (cobalt, nickel, cadmium, chromium, and lead) stress”
Claim · model-written summary
Salicylic acid reversed parameters disturbed by heavy metal stress.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- salicylic acide0
- Outcome
- all parameters disturbed by HM stresse0
- Direction
- reverts backe0
- Comparator
- HM stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of salicylic acid reverts back all parameters disturbed by HM stress.”
t0“Cauliflower”
Claim · model-written summary
Salicylic acid enhanced chromium toxicity and plants died.
- Taxon
- CauliflowerBrassica oleracea var. botrytist0
- Treatment
- salicylic acide0
- Outcome
- chromium toxicity effectse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salicylic acid enhanced chromium toxicity effects in plants, showing synergism and the plants died.”
t0“Cauliflower”
Claim · model-written summary
Salicylic acid at 100 mM partly ameliorated heavy metal toxicity in cauliflower.
- Taxon
- cauliflowerBrassica oleracea var. botrytise0
- Treatment
- salicylic acid (100 mM)e0
- Outcome
- toxic effects of HMse0
- Direction
- amelioratede0
- Qualifier
- to some extente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of salicylic acid (100 mM) ameliorated toxic effects of HMs to some extent, showing antagonism in cauliflower.”
The same questions in other papers
cobalt atom · physiology: oxidative · Brassica oleracea (wild cabbage)Positive and negative results
1 in the opposite direction
- positive
chromium atom · physiology: antioxidant enzymes · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- negative
cadmium atom · physiology: oxidative · Brassica oleracea (wild cabbage)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
heavy metal · physiology: antioxidant enzymes · Brassica oleracea (wild cabbage)Results agree
1 paper in the same direction as this paper
- negative
heavy metal · physiology: oxidative · Brassica oleracea (wild cabbage)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
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.