Abstract
RNA-dependent RNA polymerase activities were measured in healthy and tobacco mosaic virus (TMV)-infected tomato plants, to investigate the possibility that altered activity might be involved in the operation of the Tm-I gene for resistance to TMV. Healthy, susceptible and resistant plants had similar levels of enzyme activity. Infection with TMV strain 0, which is inhibited by Tm-I, caused a 2-fold increase in activity in susceptible plants but no increase in Tm-I plants. Infection with a number of strain 1 isolates, which overcome Tm-I resistance, led to a 2 to 4-fold increase in enzyme activity in resistant plants.
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Claims 4
Claim · model-written summary
Healthy, susceptible and resistant tomato plants had similar levels of enzyme activity.
- Taxon
- Tomato
Solanum lycopersicumt0 - Outcome
- enzyme activitye1
- Qualifier
- similar levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Plants Susceptible or Resistant to Tobacco Mosaic Virus”
e1“Healthy, susceptible and resistant plants had similar levels of enzyme activity”
Claim · model-written summary
Infection with TMV strain 0 caused a 2-fold increase in enzyme activity in susceptible tomato plants compared with healthy plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Infection with TMV strain 0e2
- Interactor
- tobacco mosaic virus
Tobacco mosaic viruse0pathogen - Gene
- RNA-dependent RNA polymerasee0
- Outcome
- activitye2
- Direction
- increasee2
- Value
- 2-folde2
- Comparator
- healthye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Plants Susceptible or Resistant to Tobacco Mosaic Virus”
e0“RNA-dependent RNA polymerase activities were measured in healthy and tobacco mosaic virus (TMV)-infected tomato plants”
e2“Infection with TMV strain 0, which is inhibited by Tm-I, caused a 2-fold increase in activity in susceptible plants”
Claim · model-written summary
Infection with TMV strain 0 caused no increase in enzyme activity in Tm-I tomato plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Infection with TMV strain 0e2
- Interactor
- tobacco mosaic virusTobacco mosaic viruse0pathogen
- Gene
- Tm-Ie3
- Outcome
- activitye2
- Direction
- no increasee3
- Comparator
- healthye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Plants Susceptible or Resistant to Tobacco Mosaic Virus”
e0“RNA-dependent RNA polymerase activities were measured in healthy and tobacco mosaic virus (TMV)-infected tomato plants”
e2“Infection with TMV strain 0, which is inhibited by Tm-I, caused a 2-fold increase in activity in susceptible plants”
e3“but no increase in Tm-I plants”
Claim · model-written summary
Infection with a number of strain 1 isolates that overcome Tm-I led to a 2 to 4-fold increase in enzyme activity in resistant tomato plants.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Infection with a number of strain 1 isolatese4
- Interactor
- tobacco mosaic virusTobacco mosaic viruse0pathogen
- Gene
- Tm-Ie4
- Outcome
- enzyme activitye4
- Direction
- increasee4
- Value
- 2 to 4-folde4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Plants Susceptible or Resistant to Tobacco Mosaic Virus”
e0“RNA-dependent RNA polymerase activities were measured in healthy and tobacco mosaic virus (TMV)-infected tomato plants”
e4“Infection with a number of strain 1 isolates, which overcome Tm-I resistance, led to a 2 to 4-fold increase in enzyme activity in resistant plants”
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See all 11 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.