Abstract
The resistance induced by spraying iron against potato virus Y-vein necrosis strain(PVYN) on tobacco was studied.The results showed that the symptom appeared later and the content of virus(7.31mg·mL-1) were much lower than that of control when treated with iron 33.6mg.L-1.Except phenylalanine ammonia-lyase(PAL),the tobacco either inculcated or no inoculated the activities of peroxidase(POD),catalase(CAT) and content of Chlorophyll a increased than that of control when treated with iron at concentration of 33.6mg·L-1.The production rate of activated oxygen raised 1.6 times in a short time after treatment,those in-dicated that the induce resistance of tobacco was induced.The activities of polyphenold oxidase(PPO) in tobacco leaves which treated with iron before inoculation,were higher than those of the control in 12days.But it was down to 4296.68U.mg-1pro.h-1,much lower than that of the control after the 12th day,which showed that the degree of vein browning was related to the PPO activity decreasing.In conclusion spraying iron could induce tobacco plant resistance to PVYN.
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Claims 8
Claim · model-written summary
Iron treatment delayed PVYN symptoms in tobacco.
- Taxon
- tobacco
Nicotiana tabacumt0 - Treatment
- iron 33.6mg.L-1e0
- Interactor
- viruse0pathogen
- Outcome
- symptome0
- Direction
- appeared latere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the symptom appeared later and the content of virus(7.31mg·mL-1) were much lower than that of control when treated with iron 33.6mg.L-1.”
t0“tobacco”
Claim · model-written summary
Iron treatment lowered PVYN content in tobacco to 7.31mg·mL-1 compared with control.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- iron 33.6mg.L-1e0
- Interactor
- viruse0pathogen
- Outcome
- content of viruse0
- Direction
- much lowere0
- Value
- 7.31mg·mL-1e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the symptom appeared later and the content of virus(7.31mg·mL-1) were much lower than that of control when treated with iron 33.6mg.L-1.”
t0“tobacco”
Claim · model-written summary
Iron increased tobacco POD and CAT activities and chlorophyll a content, with or without inoculation.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- iron at concentration of 33.6mg·L-1e0
- Outcome
- activities of peroxidase(POD),catalase(CAT) and content of Chlorophyll ae0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tobacco either inculcated or no inoculated the activities of peroxidase(POD),catalase(CAT) and content of Chlorophyll a increased than that of control when treated with iron at concentration of 33.6mg·L-1.”
Claim · model-written summary
Iron raised activated oxygen production rate 1.6 times shortly after treatment.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- treatmente0
- Outcome
- production rate of activated oxygene0
- Direction
- raisede0
- Value
- 1.6 timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco”
e0“The production rate of activated oxygen raised 1.6 times in a short time after treatment”
Claim · model-written summary
Leaf PPO activity was higher than control during the first 12 days after iron treatment before inoculation.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- iron before inoculatione0
- Outcome
- activities of polyphenold oxidase(PPO)e0
- Direction
- highere0
- Qualifier
- in 12dayse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco”
e0“The activities of polyphenold oxidase(PPO) in tobacco leaves which treated with iron before inoculation,were higher than those of the control in 12days.”
Claim · model-written summary
After day 12, tobacco leaf PPO activity fell to 4296.68U.mg-1pro.h-1, below control.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- ite0
- Direction
- downe0
- Value
- 4296.68U.mg-1pro.h-1e0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco”
e0“But it was down to 4296.68U.mg-1pro.h-1,much lower than that of the control after the 12th day”
Claim · model-written summary
The authors associated reduced PPO activity with vein browning.
- Taxon
- tobaccoNicotiana tabacumt0
- Gene
- PPOe0
- Outcome
- degree of vein browninge0
- Direction
- related toe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tobacco”
e0“the degree of vein browning was related to the PPO activity decreasing”
Claim · model-written summary
The authors concluded that iron spraying induced tobacco resistance to PVYN.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- spraying irone0
- Interactor
- PVYNe0pathogen
- Outcome
- resistance to PVYNe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spraying iron could induce tobacco plant resistance to PVYN.”
The same questions in other papers
iron atom · disease · Nicotiana tabacum (tobacco)Positive and negative results
2 in the opposite direction
- negative
- no effect
iron atom · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- no effect
1 paper more in this group
See all 5 papers →iron atom · physiology: antioxidant enzymes · Nicotiana tabacum (tobacco)Results agree
1 paper in the same direction as this paper
- 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.