Abstract
The rate at which the Rothamsted tobacco necrosis virus (RTNV) accumulates in inoculated French bean leaves increases with rising temperature to 22°C. and then decreases. Three days after inoculation, leaves at 22°C. contain 4000 times as much virus as at 10°C. and 1000 times as much as at 30°C. At all temperatures the rate of accumulation may depend on the balance between synthesis and inactivation of RTNV, but inactivation becomes increasingly important with rise of temperature above 22° C. and as the virus content of the leaves increases. Above 22°C. the rate of multiplication may increase but less rapidly than the rate of inactivation, and exposing inoculated leaves to ultra‐violet radiation at various intervals after inoculation suggests that at 30°C. RTNV multiplies in and moves from the initially infected epidermal cells in slightly less than the 6 hr. needed at 22°C. Thirty hr. are needed at 10°C. Newly formed virus is rapidly inactivated at 30°C. Raising the ambient temperature also decreases the numbers of local lesions produced by RTNV, possibly by increasing the chances that the introduced virus particles will become inactivated. Increasing the virus content of the inoculum above the level giving one lesion per sq.cm. does not increase the subsequent virus content of inoculated leaves. At temperatures of 30°C. and below, tomato aucuba mosaic virus produces necrotic lesions in leaves of tobacco and Nicotiana glutinosa whereas above 30°C. the lesions are chlorotic. In both hosts this virus multiplies more rapidly when the infected cells are killed.
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Claims 15
Claim · model-written summary
RTNV accumulation in French bean leaves rose with temperature to 22°C and then declined.
- Taxon
- French bean
Phaseolus vulgarise0 - Interactor
- Rothamsted tobacco necrosis virus (RTNV)e0pathogen
- Outcome
- Rothamsted tobacco necrosis virus (RTNV) accumulatese0
- Direction
- increasese0
- Qualifier
- 22°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate at which the Rothamsted tobacco necrosis virus (RTNV) accumulates in inoculated French bean leaves increases with rising temperature to 22°C. and then decreases”
Claim · model-written summary
At three days, French bean leaves at 22°C contained 4000 times the virus at 10°C.
- Taxon
- French beanPhaseolus vulgarise1
- Interactor
- RTNVe2pathogen
- Outcome
- viruse0
- Direction
- 4000 times as muche0
- Value
- 4000 timese0
- Qualifier
- Three days after inoculatione0
- Comparator
- 10°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Three days after inoculation, leaves at 22°C. contain 4000 times as much virus as at 10°C.”
e1“French bean leaves”
e2“Rothamsted tobacco necrosis virus (RTNV)”
Claim · model-written summary
At three days, French bean leaves at 22°C contained 1000 times the virus at 30°C.
- Taxon
- French beanPhaseolus vulgarise1
- Interactor
- RTNVe2pathogen
- Outcome
- viruse3
- Direction
- 1000 times as muche0
- Value
- 1000 timese0
- Comparator
- 30°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1000 times as much as at 30°C.”
e1“French bean leaves”
e2“Rothamsted tobacco necrosis virus (RTNV)”
e3“as much virus as at 10°C.”
Claim · model-written summary
RTNV inactivation became more important above 22°C and at higher virus content.
- Taxon
- French beanPhaseolus vulgarise1
- Interactor
- RTNVe2pathogen
- Outcome
- inactivatione0
- Direction
- increasingly importante0
- Qualifier
- above 22° C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inactivation becomes increasingly important with rise of temperature above 22° C. and as the virus content of the leaves increases”
e1“French bean leaves”
e2“Rothamsted tobacco necrosis virus (RTNV)”
Claim · model-written summary
RTNV moved from infected epidermal cells at 30°C in slightly less than six hours, versus six hours at 22°C.
- Taxon
- French beanPhaseolus vulgarise1
- Organ / stage
- epidermal cellse0
- Interactor
- RTNVe0pathogen
- Outcome
- RTNV multiplies in and moves from the initially infected epidermal cellse0
- Direction
- slightly less thane0
- Value
- 6 hr.e0
- Comparator
- 22°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 30°C. RTNV multiplies in and moves from the initially infected epidermal cells in slightly less than the 6 hr. needed at 22°C.”
e1“French bean leaves”
Claim · model-written summary
At 10°C, RTNV required thirty hours to multiply and move from infected cells.
- Taxon
- French beanPhaseolus vulgarise1
- Interactor
- RTNVe2pathogen
- Outcome
- RTNVe2
- Value
- Thirty hr.e0
- Qualifier
- 10°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thirty hr. are needed at 10°C.”
e1“French bean leaves”
e2“Rothamsted tobacco necrosis virus (RTNV)”
Claim · model-written summary
New RTNV was rapidly inactivated at 30°C.
- Taxon
- French beanPhaseolus vulgarise1
- Interactor
- RTNVe2pathogen
- Outcome
- virus is rapidly inactivatede0
- Qualifier
- 30°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Newly formed virus is rapidly inactivated at 30°C.”
e1“French bean leaves”
e2“Rothamsted tobacco necrosis virus (RTNV)”
Claim · model-written summary
Raising ambient temperature decreased numbers of RTNV local lesions.
- Taxon
- French beanPhaseolus vulgarise1
- Treatment
- Raising the ambient temperaturee0
- Interactor
- RTNVe0pathogen
- Outcome
- numbers of local lesions produced by RTNVe0
- Direction
- decreasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Raising the ambient temperature also decreases the numbers of local lesions produced by RTNV”
e1“French bean leaves”
Claim · model-written summary
Increasing RTNV inoculum above one lesion per square centimetre did not increase leaf virus content.
- Taxon
- French beanPhaseolus vulgarise1
- Treatment
- Increasing the virus content of the inoculume0
- Interactor
- RTNVe2pathogen
- Outcome
- subsequent virus content of inoculated leavese0
- Direction
- does not increasee0
- Comparator
- the level giving one lesion per sq.cm.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the virus content of the inoculum above the level giving one lesion per sq.cm. does not increase the subsequent virus content of inoculated leaves”
e1“French bean leaves”
e2“Rothamsted tobacco necrosis virus (RTNV)”
Claim · model-written summary
Tomato aucuba mosaic virus caused necrotic tobacco leaf lesions at or below 30°C.
- Taxon
- tobacco
Nicotiana tabacume0 - Interactor
- tomato aucuba mosaic viruse0pathogen
- Outcome
- necrotic lesions in leaves of tobaccoe0
- Qualifier
- 30°C. and belowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At temperatures of 30°C. and below, tomato aucuba mosaic virus produces necrotic lesions in leaves of tobacco and Nicotiana glutinosa”
Claim · model-written summary
Tomato aucuba mosaic virus caused necrotic Nicotiana glutinosa leaf lesions at or below 30°C.
- Taxon
- Nicotiana glutinosa
Nicotiana glutinosae0 - Interactor
- tomato aucuba mosaic viruse0pathogen
- Outcome
- necrotic lesionse0
- Qualifier
- 30°C. and belowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At temperatures of 30°C. and below, tomato aucuba mosaic virus produces necrotic lesions in leaves of tobacco and Nicotiana glutinosa”
Claim · model-written summary
Above 30°C, tomato aucuba mosaic virus lesions in tobacco were chlorotic.
- Taxon
- tobaccoNicotiana tabacume0
- Interactor
- tomato aucuba mosaic viruse0pathogen
- Outcome
- lesions are chlorotice0
- Qualifier
- above 30°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At temperatures of 30°C. and below, tomato aucuba mosaic virus produces necrotic lesions in leaves of tobacco and Nicotiana glutinosa whereas above 30°C. the lesions are chlorotic”
Claim · model-written summary
Above 30°C, tomato aucuba mosaic virus lesions in Nicotiana glutinosa were chlorotic.
- Taxon
- Nicotiana glutinosaNicotiana glutinosae0
- Interactor
- tomato aucuba mosaic viruse0pathogen
- Outcome
- lesions are chlorotice0
- Qualifier
- above 30°C.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At temperatures of 30°C. and below, tomato aucuba mosaic virus produces necrotic lesions in leaves of tobacco and Nicotiana glutinosa whereas above 30°C. the lesions are chlorotic”
Claim · model-written summary
Tomato aucuba mosaic virus multiplied more rapidly when infected tobacco cells died.
- Taxon
- tobaccoNicotiana tabacume1
- Organ / stage
- infected cellse0
- Interactor
- tomato aucuba mosaic viruse2pathogen
- Outcome
- virus multipliese0
- Direction
- more rapidlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both hosts this virus multiplies more rapidly when the infected cells are killed”
e1“tobacco and Nicotiana glutinosa”
e2“tomato aucuba mosaic virus”
Claim · model-written summary
Tomato aucuba mosaic virus multiplied more rapidly when infected Nicotiana glutinosa cells died.
- Taxon
- Nicotiana glutinosaNicotiana glutinosae1
- Organ / stage
- infected cellse0
- Interactor
- tomato aucuba mosaic viruse2pathogen
- Outcome
- virus multipliese0
- Direction
- more rapidlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both hosts this virus multiplies more rapidly when the infected cells are killed”
e1“tobacco and Nicotiana glutinosa”
e2“tomato aucuba mosaic virus”
The same questions in other papers
inoculation · disease · Phaseolus vulgaris (common bean)Positive and negative results
39 papers in the same direction as this paper · 28 in the opposite direction
- negative
- positive
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64 papers more in this group
See all 68 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.