Abstract
Triacontanol (TRIA) role in improving growth, physiological activities and tolerance against abiotic stresses has been reported. Yet, the mechanism by which TRIA executes its effects remains elusive. This work therefore studied the possible role of TRIA exogenous application in counteracting the adverse effects of nickel (Ni) treated maize seedlings. Maize seedlings (15-day-old) were grown in washed sand irrigated with nutrient solution provided with 100 μM NiCl2. Two concentrations of TRIA (25 and 50 µM) were applied twice as a foliar spray for Ni-stressed seedlings. Shoot and root growth attributes, Ni content, and antioxidant defence systems of maize seedlings were determined. Ni treatment reduced the shoot and root length and biomass, causing necrosis of the old leaves,greater reduction was shown in the roots. The shoot and root length was negatively correlated with their Ni content, which was consistent with their content of H2O2, but not with their malondialdehyde (MDA) content. As the roots had the greatest Ni content, maximum peroxidase (PX) and glutathione reductase (GR) activity as well as the highest ascorbic acid (ASA) and reduced glutathione (GSH) content were observed in the roots. The Ni-induced deleterious effects were alleviated by foliar application of TRIA concentrations. Also, TRIA treatment minimized root Ni content, whereas it maintained the shoots unharmed by Ni. Such mitigative effects of TRIA are explained by its key role in enhancing antioxidant capacity (expressed as IC50), increased PX and ascorbate oxidase (AO) activity, GSH, and total phenolic contents.
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Claims 14
Claim · model-written summary
Nickel reduced shoot and root length and biomass in maize seedlings, more strongly in roots.
- Organ / stage
- shoot and roote0
- Treatment
- Ni treatmente0
- Outcome
- shoot and root length and biomasse0
- Direction
- reducede0
- Qualifier
- greater reduction was shown in the rootse0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni treatment reduced the shoot and root length and biomass, causing necrosis of the old leaves,greater reduction was shown in the roots.”
t0“Maize Seedling”
Claim · model-written summary
Nickel caused necrosis of old maize leaves.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ni treatment reduced the shoot and root length and biomass, causing necrosis of the old leaves,greater reduction was shown in the roots.”
t0“Maize Seedling”
Claim · model-written summary
Shoot and root length in maize seedlings was negatively correlated with nickel content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoot and root length was negatively correlated with their Ni content, which was consistent with their content of H2O2, but not with their malondialdehyde (MDA) content.”
t0“Maize Seedling”
Claim · model-written summary
Shoot and root length in maize seedlings was consistent with hydrogen peroxide content.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoot and root length was negatively correlated with their Ni content, which was consistent with their content of H2O2, but not with their malondialdehyde (MDA) content.”
t0“Maize Seedling”
Claim · model-written summary
Shoot and root length in maize seedlings was not consistent with malondialdehyde content.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoot and root length was negatively correlated with their Ni content, which was consistent with their content of H2O2, but not with their malondialdehyde (MDA) content.”
t0“Maize Seedling”
Claim · model-written summary
Maize roots had the greatest nickel content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the roots had the greatest Ni content, maximum peroxidase (PX) and glutathione reductase (GR) activity as well as the highest ascorbic acid (ASA) and reduced glutathione (GSH) content were observed in the roots.”
t0“Maize Seedling”
Claim · model-written summary
Maize roots showed maximum peroxidase and glutathione reductase activity.
- Organ / stage
- rootse0
- Outcome
- peroxidase (PX) and glutathione reductase (GR) activitye0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the roots had the greatest Ni content, maximum peroxidase (PX) and glutathione reductase (GR) activity as well as the highest ascorbic acid (ASA) and reduced glutathione (GSH) content were observed in the roots.”
t0“Maize Seedling”
Claim · model-written summary
Maize roots had the highest ascorbic acid and reduced glutathione content.
- Organ / stage
- rootse0
- Outcome
- ascorbic acid (ASA) and reduced glutathione (GSH) contente0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the roots had the greatest Ni content, maximum peroxidase (PX) and glutathione reductase (GR) activity as well as the highest ascorbic acid (ASA) and reduced glutathione (GSH) content were observed in the roots.”
t0“Maize Seedling”
Claim · model-written summary
Foliar triacontanol alleviated nickel damage in maize seedlings.
- Treatment
- foliar application of TRIA concentrationse0
- Outcome
- Ni-induced deleterious effectse0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Ni-induced deleterious effects were alleviated by foliar application of TRIA concentrations.”
t0“Maize Seedling”
Claim · model-written summary
Triacontanol minimized nickel content in maize roots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Also, TRIA treatment minimized root Ni content, whereas it maintained the shoots unharmed by Ni.”
t0“Maize Seedling”
Claim · model-written summary
Triacontanol maintained maize shoots unharmed by nickel.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Also, TRIA treatment minimized root Ni content, whereas it maintained the shoots unharmed by Ni.”
t0“Maize Seedling”
Claim · model-written summary
The authors attribute triacontanol mitigation of nickel stress to enhanced antioxidant capacity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Such mitigative effects of TRIA are explained by its key role in enhancing antioxidant capacity (expressed as IC50), increased PX and ascorbate oxidase (AO) activity, GSH, and total phenolic contents.”
t0“Maize Seedling”
Claim · model-written summary
Triacontanol increased peroxidase and ascorbate oxidase activity in nickel-stressed maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Such mitigative effects of TRIA are explained by its key role in enhancing antioxidant capacity (expressed as IC50), increased PX and ascorbate oxidase (AO) activity, GSH, and total phenolic contents.”
t0“Maize Seedling”
Claim · model-written summary
Triacontanol increased glutathione and total phenolic contents in nickel-stressed maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Such mitigative effects of TRIA are explained by its key role in enhancing antioxidant capacity (expressed as IC50), increased PX and ascorbate oxidase (AO) activity, GSH, and total phenolic contents.”
t0“Maize Seedling”
The same questions in other papers
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application · nutrient: content · Zea mays (maize)Positive and negative results
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- no effect
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See all 161 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.