Abstract
An investigation of the effects of temperature and of zinc on the development of tobacco-mosaic virus (TMV) in resistant and susceptible varieties of tomatoes was conducted under greenhouse conditions. The study included two experiments, one run during late winter and early spring, and the other during late spring and summer, 1963. Each experiment comprised four treatments and two temperatures. The tomato lines Hawaii 6832, OSU-8, and California 62 PM 22 were used as resistant varieties, whereas the OSU-435-4 line was used as the susceptible one. The common strain of tobacco-mosaic virus was used in this study. Zinc foliar sprays were applied to the tomato plants about 10 days before the seedlings were inoculated with TMV. Immediately after inoculation the plants were divided into two lots and moved to the two temperature houses (cool and hot). The virus concentration was determined by the local lesion assay. One gram of leaf tissue from the tomato plants was ground in a mortar with pestle and a 10-ml. buffer solution added. The extracted sap was squeezed through cheesecloth. One carborundum-dusted leaf of Necrotic Turk tobacco was inoculated. The local lesions were subsequently counted and used as a criterium. Increase in temperature tended to increase virus concentration, although the differences were not significant. Fresh weights of the tomato plants were found to be greater at lower temperatures. Zinc foliar sprays resulted in higher virus concentration and in production of an increased number of local lesions when the inoculum prepared from such treated plants was rubbed into Necrotic Turk tobacco leaves. Effects of zinc on fresh weights were not statistically significant. Zinc applied as foliar sprays appeared to be involved in virus synthesis and multiplication, with higher virus concentrations associated with the addition of zinc. The varieties Hawaii 6832 and OSU-8 were highly resistant, the variety California 62 PM 22 was heterozygous for resistance, and the variety OSU- 435-4 was highly susceptible to the common strain of TMV under the conditions prevailing in these experiments.
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Claims 8
Claim · model-written summary
Higher temperature tended to raise TMV concentration, without statistical significance.
- Taxon
- Tomatoes
Solanum lycopersicumt0 - Treatment
- Increase in temperaturee0
- Interactor
- tobacco-mosaic virus
Tobacco mosaic viruse1pathogen - Outcome
- virus concentratione0
- Direction
- tended to increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in temperature tended to increase virus concentration, although the differences were not significant.”
t0“Tomatoes”
e1“tobacco-mosaic virus (TMV)”
Claim · model-written summary
Tomato fresh weight was greater at lower temperatures.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- lower temperaturese0
- Outcome
- Fresh weightse0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh weights of the tomato plants were found to be greater at lower temperatures.”
Claim · model-written summary
Zinc foliar sprays increased virus concentration.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- Zinc foliar sprayse0
- Interactor
- tobacco-mosaic virusTobacco mosaic viruse1pathogen
- Outcome
- virus concentratione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc foliar sprays resulted in higher virus concentration and in production of an increased number of local lesions”
t0“Tomatoes”
e1“tobacco-mosaic virus (TMV)”
Claim · model-written summary
Zinc sprays increased local lesions after inoculum was applied to tobacco leaves.
- Taxon
- TomatoesSolanum lycopersicumt0
- Material
- Necrotic Turke0
- Treatment
- Zinc foliar sprayse0
- Interactor
- tobacco-mosaic virusTobacco mosaic viruse1pathogen
- Outcome
- local lesionse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc foliar sprays resulted in higher virus concentration and in production of an increased number of local lesions when the inoculum prepared from such treated plants was rubbed into Necrotic Turk tobacco leaves.”
t0“Tomatoes”
e1“tobacco-mosaic virus (TMV)”
Claim · model-written summary
Zinc effects on tomato fresh weight were not statistically significant.
- Taxon
- TomatoesSolanum lycopersicumt0
- Treatment
- zince0
- Outcome
- fresh weightse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of zinc on fresh weights were not statistically significant.”
t0“Tomatoes”
Claim · model-written summary
Hawaii 6832 and OSU-8 were highly resistant to TMV.
- Taxon
- TomatoesSolanum lycopersicumt0
- Material
- Hawaii 6832 and OSU-8e0
- Interactor
- TMVTobacco mosaic viruse0pathogen
- Outcome
- highly resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The varieties Hawaii 6832 and OSU-8 were highly resistant, the variety California 62 PM 22 was heterozygous for resistance, and the variety OSU- 435-4 was highly susceptible to the common strain of TMV”
t0“Tomatoes”
Claim · model-written summary
California 62 PM 22 was heterozygous for TMV resistance.
- Taxon
- TomatoesSolanum lycopersicumt0
- Material
- California 62 PM 22e0
- Interactor
- TMVTobacco mosaic viruse0pathogen
- Outcome
- heterozygous for resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The varieties Hawaii 6832 and OSU-8 were highly resistant, the variety California 62 PM 22 was heterozygous for resistance, and the variety OSU- 435-4 was highly susceptible to the common strain of TMV”
t0“Tomatoes”
Claim · model-written summary
OSU- 435-4 was highly susceptible to TMV.
- Taxon
- TomatoesSolanum lycopersicumt0
- Material
- OSU- 435-4e0
- Interactor
- TMVTobacco mosaic viruse0pathogen
- Outcome
- highly susceptiblee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The varieties Hawaii 6832 and OSU-8 were highly resistant, the variety California 62 PM 22 was heterozygous for resistance, and the variety OSU- 435-4 was highly susceptible to the common strain of TMV”
t0“Tomatoes”
The same questions in other papers
zinc atom · growth · Solanum lycopersicum (tomato)Results differ
20 papers in the same direction as this paper · 36 in the opposite direction
- positive
- positive
- positive
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See all 57 papers →application · Tobacco mosaic virus · Solanum lycopersicum (tomato)Positive and negative results
8 in the opposite direction
- positive
- positive
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See all 9 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.