Abstract
Reciprocal interference experiments between Potato virus Y (PVY) and Pepper mottle virus (PeMV) in Capsicum annuum L. 'Tabasco' and 'Special pepper' (a selection of Anaheim chilli peppers), showed suppression of local lesion production in both directions but incomplete suppression of challenge virus replication (incomplete cross protection). However, suppression was reduced by increasing the concentration of the challenge virus. The source of inoculum of the viruses did not have a significant effect on the subsequent interference between the viruses. A direct relationship was established between counts of local lesions and virus particles counted using the electron microscope. Tobacco etch virus (TEV) was transmitted from one Capsicum annuum L. 'Tabasco' plant to another in the same pot within 4 days after infection of the test plant. Transmission probably took place via root grafts, as the necrotic roots of the test plants intertwined with the uninoculated Tabasco plants. Mixed infections of PVY and PeMV resulted in the production of PVY-N, a new strain of PVY. The new strain, which could be recognized by changes in biological and serological properties, was produced only in mixed infections and was stable after six serial transfers in several hosts. Evidence suggests that the development of the new strain is host dependent. Potato Virus Y in mixed infections with PeMV or TEV in C. annuum L. 'Anaheim' did not induce local lesions, systemic necrosis nor death of Special pepper, while PeMV alone induced the death of Tabasco. The behavior of TEV in Tabasco in a mixed infection was temperature dependent, while TEV alone induced wilt and death of Tabasco irrespective of the greenhouse temperature and season of the year.
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Claims 17
Claim · model-written summary
PVY and PeMV reciprocally suppressed local lesion production.
- Taxon
- Capsicum annuum L.
Capsicum annuume0 - Interactor
- Potato virus Y (PVY)
Potato virus Ye0pathogen - Second interactor
- Pepper mottle virus (PeMV)e0pathogen
- Outcome
- suppression of local lesion productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reciprocal interference experiments between Potato virus Y (PVY) and Pepper mottle virus (PeMV) in Capsicum annuum L. 'Tabasco' and 'Special pepper' (a selection of Anaheim chilli peppers), showed suppression of local lesion production in both directions”
Claim · model-written summary
Challenge virus replication was incompletely suppressed.
Verbatim
e0“incomplete suppression of challenge virus replication (incomplete cross protection)”
t0“CAPSICUM ANUUM”
Claim · model-written summary
Increasing challenge virus concentration reduced suppression.
Verbatim
e0“suppression was reduced by increasing the concentration of the challenge virus”
t0“CAPSICUM ANUUM”
Claim · model-written summary
Virus inoculum source did not significantly affect subsequent interference.
- Taxon
- CAPSICUM ANUUMt0
- Treatment
- source of inoculum of the virusese0
- Outcome
- subsequent interference between the virusese0
- Direction
- did not have a significant effecte0
Not reportedComparator
Verbatim
e0“The source of inoculum of the viruses did not have a significant effect on the subsequent interference between the viruses”
t0“CAPSICUM ANUUM”
Claim · model-written summary
Local lesion counts were directly related to virus particle counts.
- Taxon
- CAPSICUM ANUUMt0
- Outcome
- counts of local lesionse0
- Comparator
- virus particles counted using the electron microscopee0
Not reportedDirection
Verbatim
e0“A direct relationship was established between counts of local lesions and virus particles counted using the electron microscope”
t0“CAPSICUM ANUUM”
Claim · model-written summary
TEV transmitted between Tabasco plants in one pot within four days.
- Taxon
- Capsicum annuum L.Capsicum annuume0
- Material
- Tabascoe0
- Interactor
- Tobacco etch virus (TEV)
Tobacco etch viruse0pathogen - Outcome
- Tobacco etch virus (TEV) was transmittede0
- Value
- 4 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tobacco etch virus (TEV) was transmitted from one Capsicum annuum L. 'Tabasco' plant to another in the same pot within 4 days after infection of the test plant”
Claim · model-written summary
TEV transmission probably occurred through root grafts.
Verbatim
e0“Transmission probably took place via root grafts, as the necrotic roots of the test plants intertwined with the uninoculated Tabasco plants”
t0“CAPSICUM ANUUM”
Claim · model-written summary
Mixed PVY and PeMV infection produced a new PVY strain, PVY-N.
- Taxon
- CAPSICUM ANUUMt0
- Interactor
- PVYPotato virus Ye0pathogen
- Second interactor
- PeMVe0pathogen
- Outcome
- production of PVY-Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mixed infections of PVY and PeMV resulted in the production of PVY-N, a new strain of PVY”
t0“CAPSICUM ANUUM”
Claim · model-written summary
The new strain had changed biological and serological properties.
Verbatim
e0“The new strain, which could be recognized by changes in biological and serological properties, was produced only in mixed infections and was stable after six serial transfers in several hosts”
t0“CAPSICUM ANUUM”
Claim · model-written summary
The new strain was produced only in mixed infections.
Verbatim
e0“was produced only in mixed infections”
t0“CAPSICUM ANUUM”
Claim · model-written summary
The new strain remained stable after six serial transfers.
Verbatim
e0“was stable after six serial transfers in several hosts”
t0“CAPSICUM ANUUM”
Claim · model-written summary
Development of the new strain appears host dependent.
- Taxon
- CAPSICUM ANUUMt0
- Interactor
- hoste0host
- Outcome
- development of the new straine0
- Qualifier
- host dependente0
Not reportedDirection
Verbatim
e0“Evidence suggests that the development of the new strain is host dependent”
t0“CAPSICUM ANUUM”
Claim · model-written summary
PVY with PeMV did not induce local lesions, systemic necrosis or Special pepper death.
- Taxon
- C. annuum L.Capsicum annuume0
- Material
- Anaheime0
- Interactor
- Potato Virus YPotato virus Ye0pathogen
- Second interactor
- PeMVe0pathogen
- Outcome
- local lesions, systemic necrosis nor death of Special peppere0
- Direction
- did not inducee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato Virus Y in mixed infections with PeMV or TEV in C. annuum L. 'Anaheim' did not induce local lesions, systemic necrosis nor death of Special pepper”
Claim · model-written summary
PVY with TEV did not induce local lesions, systemic necrosis or Special pepper death.
- Taxon
- C. annuum L.Capsicum annuume0
- Material
- Anaheime0
- Interactor
- Potato Virus YPotato virus Ye0pathogen
- Second interactor
- TEVTobacco etch viruse0pathogen
- Outcome
- local lesions, systemic necrosis nor death of Special peppere0
- Direction
- did not inducee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato Virus Y in mixed infections with PeMV or TEV in C. annuum L. 'Anaheim' did not induce local lesions, systemic necrosis nor death of Special pepper”
Claim · model-written summary
PeMV alone caused Tabasco death.
Verbatim
e0“PeMV alone induced the death of Tabasco”
t0“CAPSICUM ANUUM”
Claim · model-written summary
TEV behavior in Tabasco mixed infection depended on temperature.
- Taxon
- CAPSICUM ANUUMt0
- Material
- Tabascoe0
- Treatment
- temperaturee0
- Interactor
- TEVTobacco etch viruse0pathogen
- Outcome
- behavior of TEVe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The behavior of TEV in Tabasco in a mixed infection was temperature dependent”
t0“CAPSICUM ANUUM”
Claim · model-written summary
TEV alone caused Tabasco wilt and death regardless of greenhouse temperature or season.
- Taxon
- CAPSICUM ANUUMt0
- Material
- Tabascoe0
- Interactor
- TEVTobacco etch viruse0pathogen
- Outcome
- wilt and death of Tabascoe0
- Qualifier
- irrespective of the greenhouse temperature and season of the yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TEV alone induced wilt and death of Tabasco irrespective of the greenhouse temperature and season of the year”
t0“CAPSICUM ANUUM”