Abstract
In order to reveal the induced resistance mechanism of tobacco treated with copper solution to potato virus Y-vein necrosis strain (PVY(N)), disease indexes, contents of virus and some physiological and biochemical indexes in tobacco were studied. The results showed that when treated at the copper concentration of 0.8 mg x L(-1), the symptom displayed and vein necrosis on tobacco were postponed, the disease index and content of virus sharply decreased , and the content of chlorophyll a, chlorophyll b and phenylalanine ammonia lyase (PAL) activity remarkably increased. Furthermore, vein necrosis closely linked to contents of total phenol and flavonoid. In this study, the contents of total phenol and flavonoid were promoted when treated with a solution at the copper concentration of 0.8 mg x L(-1). But the contents of total phenol and flavonoid reached to the first peak at the 3rd day after inoculation, and then decreased to the lowest levels which even were lower than those of the control after inoculating PVY(N). Then the contents of total phenol and flavonoid increased slowly from the 6td but still lower than those of the control. The result implied that spraying copper solution might play an important role in induced resistance of tobacco to vein necrosis disease and strengthen the antiviral capability to PVY(N).
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Claims 10
Claim · model-written summary
Copper treatment postponed tobacco vein necrosis symptoms.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- copper concentration of 0.8 mg x L(-1)e0
- Interactor
- potato virus Y-vein necrosis strain (PVY(N))Potato virus Y strain Nt0pathogen
- Outcome
- vein necrosise0
- Direction
- postponede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when treated at the copper concentration of 0.8 mg x L(-1), the symptom displayed and vein necrosis on tobacco were postponed”
t0“potato virus Y-vein necrosis strain (PVY(N)) in tobacco”
Claim · model-written summary
Copper treatment sharply decreased the tobacco disease index.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- copper concentration of 0.8 mg x L(-1)e1
- Interactor
- potato virus Y-vein necrosis strain (PVY(N))Potato virus Y strain Nt0pathogen
- Outcome
- disease indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the disease index and content of virus sharply decreased”
e1“when treated at the copper concentration of 0.8 mg x L(-1)”
t0“potato virus Y-vein necrosis strain (PVY(N)) in tobacco”
Claim · model-written summary
Copper treatment sharply decreased virus content in tobacco.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- copper concentration of 0.8 mg x L(-1)e1
- Interactor
- potato virus Y-vein necrosis strain (PVY(N))Potato virus Y strain Nt0pathogen
- Outcome
- content of viruse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the disease index and content of virus sharply decreased”
e1“when treated at the copper concentration of 0.8 mg x L(-1)”
t0“potato virus Y-vein necrosis strain (PVY(N)) in tobacco”
Claim · model-written summary
Copper treatment remarkably increased tobacco chlorophyll a and b content.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- copper concentration of 0.8 mg x L(-1)e1
- Outcome
- content of chlorophyll a, chlorophyll be0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of chlorophyll a, chlorophyll b and phenylalanine ammonia lyase (PAL) activity remarkably increased”
e1“when treated at the copper concentration of 0.8 mg x L(-1)”
t0“in tobacco”
Claim · model-written summary
Copper treatment remarkably increased tobacco PAL activity.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- copper concentration of 0.8 mg x L(-1)e1
- Gene
- phenylalanine ammonia lyase (PAL)e0
- Outcome
- phenylalanine ammonia lyase (PAL) activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phenylalanine ammonia lyase (PAL) activity remarkably increased”
e1“when treated at the copper concentration of 0.8 mg x L(-1)”
t0“in tobacco”
Claim · model-written summary
Vein necrosis was closely linked to total phenol and flavonoid contents.
- Taxon
- tobaccoNicotiana tabacumt0
- Compound
- total phenol and flavonoide0
- Outcome
- vein necrosise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“vein necrosis closely linked to contents of total phenol and flavonoid”
t0“in tobacco”
Claim · model-written summary
Copper treatment promoted total phenol and flavonoid contents.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- solution at the copper concentration of 0.8 mg x L(-1)e0
- Outcome
- contents of total phenol and flavonoide0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of total phenol and flavonoid were promoted when treated with a solution at the copper concentration of 0.8 mg x L(-1)”
t0“in tobacco”
Claim · model-written summary
Total phenol and flavonoid contents peaked on day three after inoculation and then fell below control levels.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- PVY(N)Potato virus Y strain Ne0pathogen
- Outcome
- contents of total phenol and flavonoide0
- Direction
- decreasede0
- Qualifier
- 3rd day after inoculatione0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of total phenol and flavonoid reached to the first peak at the 3rd day after inoculation, and then decreased to the lowest levels which even were lower than those of the control after inoculating PVY(N)”
t0“in tobacco”
Claim · model-written summary
Total phenol and flavonoid contents rose slowly from day six but remained below controls.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- contents of total phenol and flavonoide0
- Direction
- increasede0
- Qualifier
- from the 6tde0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the contents of total phenol and flavonoid increased slowly from the 6td but still lower than those of the control”
t0“in tobacco”
Claim · model-written summary
The authors suggest copper spraying may induce tobacco resistance to vein necrosis and strengthen antiviral capability.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- spraying copper solutione0
- Interactor
- PVY(N)Potato virus Y strain Ne0pathogen
- Outcome
- induced resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spraying copper solution might play an important role in induced resistance of tobacco to vein necrosis disease and strengthen the antiviral capability to PVY(N)”
The same questions in other papers
copper atom · physiology: pigments · Nicotiana tabacum (tobacco)Results differ
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
copper atom · physiology: antioxidant enzymes · Nicotiana tabacum (tobacco)Positive and negative results
3 in the opposite direction
- 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.