Abstract
Abstract It is well-established that salicylic acid (SA) and glutathione are key components of plant defense against viruses. Our earlier research showed that elevated glutathione in tobacco correlated with increased SA levels resulting in enhanced resistance to Tobacco mosaic virus (TMV). We also demonstrated that glutathione could maintain TMV resistance in SA-deficient transgenic tobacco (Künstler et al., 2019). In the present study, we tested how SA and glutathione affect plant defense to Tobacco necrosis virus (TNV). Our results show that glutathione overproduction in tobacco had no effect on TNV levels and elevated glutathione in SA deficient tobacco could not compensate for the lack of SA as opposed to TMV infections. An analysis of SA and glutathione levels was conducted in virus-inoculated plants. An increase in SA levels was a characteristic of TMV infection, but not of TNV, while glutathione levels increased in response to both viruses. However, SA is necessary for maintaining plant defense to both TMV and TNV because the absence of SA leads to increased susceptibility to both viruses. In overall high levels of glutathione seem to be clearly associated with a higher degree of resistance to TMV but not to TNV. This study may contribute to a better understanding of plant defense responses against viruses.
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Claims 10
Claim · model-written summary
Glutathione overproduction had no effect on TNV levels in tobacco.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- glutathione overproductione0
- Interactor
- TNVunidentified tobacco necrosis viruse0pathogen
- Outcome
- TNV levelse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glutathione overproduction in tobacco had no effect on TNV levels”
Claim · model-written summary
Elevated glutathione could not compensate for salicylic acid deficiency against TNV.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- elevated glutathionee0
- Interactor
- TMV
Tobacco mosaic viruse0pathogen - Outcome
- could not compensate for the lack of SAe0
- Direction
- could not compensatee0
- Comparator
- lack of SAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elevated glutathione in SA deficient tobacco could not compensate for the lack of SA as opposed to TMV infections”
Claim · model-written summary
TMV infection increased SA levels.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- TMVTobacco mosaic viruse0pathogen
- Outcome
- SA levelse0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in SA levels was a characteristic of TMV infection”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
Claim · model-written summary
TNV infection did not show the SA increase characteristic of TMV.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- TNVunidentified tobacco necrosis viruse0pathogen
- Outcome
- SA levelse0
- Direction
- not of TNVe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase in SA levels was a characteristic of TMV infection, but not of TNV”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
Claim · model-written summary
Glutathione levels increased in response to tobacco mosaic virus.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- tobacco mosaic virusTobacco mosaic virust1pathogen
- Outcome
- glutathione levelse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glutathione levels increased in response to both viruses”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
t1“tobacco mosaic virus and tobacco necrosis virus”
Claim · model-written summary
Glutathione levels increased in response to tobacco necrosis virus.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- tobacco necrosis virusunidentified tobacco necrosis virust1pathogen
- Outcome
- glutathione levelse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glutathione levels increased in response to both viruses”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
t1“tobacco necrosis virus”
Claim · model-written summary
Absence of SA increased tobacco susceptibility to tobacco mosaic virus.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- absence of SAe0
- Interactor
- tobacco mosaic virusTobacco mosaic virust1pathogen
- Outcome
- susceptibilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the absence of SA leads to increased susceptibility to both viruses”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
t1“tobacco mosaic virus and tobacco necrosis virus”
Claim · model-written summary
Absence of SA increased tobacco susceptibility to tobacco necrosis virus.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- absence of SAe0
- Interactor
- tobacco necrosis virusunidentified tobacco necrosis virust1pathogen
- Outcome
- susceptibilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the absence of SA leads to increased susceptibility to both viruses”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
t1“tobacco necrosis virus”
Claim · model-written summary
High glutathione was associated with higher resistance to TMV.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- TMVTobacco mosaic viruse0pathogen
- Compound
- glutathionee0
- Outcome
- resistance to TMVe0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high levels of glutathione seem to be clearly associated with a higher degree of resistance to TMV but not to TNV”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
Claim · model-written summary
High glutathione was not associated with higher resistance to TNV.
- Taxon
- tobaccoNicotiana tabacumt0
- Interactor
- TNVunidentified tobacco necrosis viruse0pathogen
- Compound
- glutathionee0
- Outcome
- resistance to TMV but not to TNVe0
- Direction
- not to TNVe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high levels of glutathione seem to be clearly associated with a higher degree of resistance to TMV but not to TNV”
t0“Differential roles of salicylic acid and glutathione in resistance of tobacco”
The same questions in other papers
glutathione · Tobacco mosaic virus · Nicotiana tabacum (tobacco)Positive and negative results
1 reporting no difference from an alternative
- positive
salicylic acid · Tobacco mosaic virus · Nicotiana tabacum (tobacco)Positive and negative results
1 paper in the same direction as this paper · 8 in the opposite direction
- no effect
- positive
- positive
6 papers more in this group
See all 10 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.