Abstract
Summary The potato cv. Igor is susceptible to infection with Potato virus Y (PVY) and in Slovenia it has been so severely affected with NTN isolates of PVY causing potato tuber necrotic ringspot disease (PTNRD) that its cultivation has ceased. Plants of cv. Igor were transformed with two transgenes that contained coat protein gene sequence of PVY NTN . Both transgenes used PVY sequence in a sense (+) orientation, one in native translational context (N‐CP), and one with a frame‐shift mutation (FS‐CP). Although most transgenic lines were susceptible to infection with PVY NTN and PVY O , several lines showed resistance that could be classified into two types. Following manual or graft inoculation, plants of partially resistant lines developed some symptoms in foliage and tubers, and virus titre in the foliage, estimated by ELISA, was low or undetectable. In highly resistant (R) lines, symptoms did not develop in foliage and on tubers, and virus could not be detected in foliage by ELISA or infectivity assay. Four lines from 34 tested (two N‐CP and two FS‐CP) were R to PVY NTN and PVY O and one additional line was R to PVY O . When cv. Spey was transformed with the same constructs, they did not confer strong resistance to PVY O .
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Claims 9
Claim · model-written summary
Most transformed Igor potato lines remained susceptible to PVY NTN and PVY O.
- Taxon
- potato
Solanum tuberosumt0 - Interactor
- PVY NTNe0pathogen
- Outcome
- susceptible to infectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most transgenic lines were susceptible to infection with PVY NTN and PVY O”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
Partially resistant Igor lines developed some foliage and tuber symptoms after inoculation.
- Taxon
- potatoSolanum tuberosumt0
- Material
- partially resistant linese0
- Treatment
- manual or graft inoculatione0
- Outcome
- developed some symptoms in foliage and tuberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Following manual or graft inoculation, plants of partially resistant lines developed some symptoms in foliage and tubers”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
Virus titre in the foliage of partially resistant lines was low or undetectable.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- virus titre in the foliagee0
- Direction
- low or undetectablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“virus titre in the foliage, estimated by ELISA, was low or undetectable”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
Highly resistant lines developed no foliage or tuber symptoms.
- Taxon
- potatoSolanum tuberosumt0
- Material
- highly resistant (R) linese0
- Outcome
- symptoms did not develop in foliage and on tuberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In highly resistant (R) lines, symptoms did not develop in foliage and on tubers”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
Virus was undetectable in foliage of highly resistant lines by ELISA or infectivity assay.
- Taxon
- potatoSolanum tuberosumt0
- Outcome
- virus could not be detected in foliagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“virus could not be detected in foliage by ELISA or infectivity assay”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
Two N‐CP lines among 34 tested were highly resistant to PVY NTN and PVY O.
- Taxon
- potatoSolanum tuberosumt0
- Material
- N‐CPe0
- Interactor
- PVY NTNe0pathogen
- Outcome
- were R to PVY NTN and PVY Oe0
- Value
- two N‐CPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four lines from 34 tested (two N‐CP and two FS‐CP) were R to PVY NTN and PVY O”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
Two FS‐CP lines among 34 tested were highly resistant to PVY NTN and PVY O.
- Taxon
- potatoSolanum tuberosumt0
- Material
- FS‐CPe0
- Interactor
- PVY NTNe0pathogen
- Outcome
- were R to PVY NTN and PVY Oe0
- Value
- two FS‐CPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four lines from 34 tested (two N‐CP and two FS‐CP) were R to PVY NTN and PVY O”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
One additional transformed Igor line was highly resistant to PVY O.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- PVY Oe0pathogen
- Outcome
- was R to PVY Oe0
- Value
- one additional linee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one additional line was R to PVY O”
t0“resistance to potato tuber necrotic ringspot disease in potato”
Claim · model-written summary
The same constructs failed to confer strong PVY O resistance in cv. Spey.
- Taxon
- potatoSolanum tuberosumt0
- Material
- cv. Speye0
- Treatment
- transformed with the same constructse0
- Interactor
- PVY Oe0pathogen
- Outcome
- did not confer strong resistance to PVY Oe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When cv. Spey was transformed with the same constructs, they did not confer strong resistance to PVY O”
t0“resistance to potato tuber necrotic ringspot disease in potato”
The same questions in other papers
transgenic · disease · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
14 papers more in this group
See all 18 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.