Abstract
In this investigation, the effect of zinc excess and its interaction with ascorbic acid on some growth parameters (root and shoot, fresh and dry weight, leaf blade area and length of root and stem), proline content, soluble sugars and starch plant were studied on canola. Experimental plants were treated with different concentrations of zinc sulfate ie. 0.7 (control), 50, 100, 250, 500 and 700 mM) and one set with the same zinc concentrations (except control) mixed with 1M of ascorbic acid in Hougland nutrient solution for two weeks. Results indicated that any increase in zinc content leads to considerable decrease in starch level, leaf blade area, stem and root length, but proline and soluble sugars increased significantly in shoot and roots of rape seed. In higher concentrations of zinc sulfate in the presence of 1M ascorbic acid, the above-mentioned effects of zinc sulfate excess on growth parameters were considerably blocked. In the presence of 700 mM of zinc sulfate, chlorosis and necrosis were occurred on the leaves of rape seed, but at the copresence of 1 mM of ascorbic acid, mentioned symptoms was disappeared. It means that at the presence of ascorbic acid the plant could tolerate the toxicity of zinc sulfate excess. In the other word, ascorbic acid could considerably reduce the toxicity of high concentrations of zinc and induce poison durability.
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Claims 5
Claim · model-written summary
Increasing zinc decreased starch level, leaf blade area, and stem and root length in canola.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- increase in zinc contente0
- Outcome
- starch level, leaf blade area, stem and root lengthe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“any increase in zinc content leads to considerable decrease in starch level, leaf blade area, stem and root length”
t0“Brassica napus”
Claim · model-written summary
Increasing zinc significantly increased proline and soluble sugars in canola shoots and roots.
- Taxon
- rape seedBrassica napuse0
- Organ / stage
- shoot and rootse0
- Outcome
- proline and soluble sugarse0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline and soluble sugars increased significantly in shoot and roots of rape seed”
Claim · model-written summary
Ascorbic acid blocked zinc sulfate effects on growth parameters at higher zinc concentrations.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- 1M ascorbic acide0
- Outcome
- effects of zinc sulfate excess on growth parameterse0
- Direction
- blockede0
- Comparator
- zinc sulfate excesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In higher concentrations of zinc sulfate in the presence of 1M ascorbic acid, the above-mentioned effects of zinc sulfate excess on growth parameters were considerably blocked.”
t0“Brassica napus”
Claim · model-written summary
At 700 mM zinc sulfate, canola leaves developed chlorosis and necrosis.
- Taxon
- rape seedBrassica napuse0
- Organ / stage
- leavese0
- Treatment
- 700 mM of zinc sulfatee0
- Outcome
- chlorosis and necrosise0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the presence of 700 mM of zinc sulfate, chlorosis and necrosis were occurred on the leaves of rape seed”
Claim · model-written summary
Ascorbic acid co-treatment eliminated leaf chlorosis and necrosis under zinc sulfate stress.
- Taxon
- rape seedBrassica napuse1
- Treatment
- 1 mM of ascorbic acide0
- Outcome
- chlorosis and necrosise1
- Direction
- disappearede0
- Comparator
- 700 mM of zinc sulfatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but at the copresence of 1 mM of ascorbic acid, mentioned symptoms was disappeared”
e1“In the presence of 700 mM of zinc sulfate, chlorosis and necrosis were occurred on the leaves of rape seed”
The same questions in other papers
ascorbic acid · physiology: pigments · Brassica napus (oilseed rape)Results agree
1 paper in the same direction as this paper
- positive
ascorbic acid · growth · Brassica napus (oilseed rape)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.