Abstract
Potato (Solanum tuberosum) plants contain a high basal level of salicylic acid (SA), the role of which in disease resistance is currently unclear. Here we report that, in spite of a drastic reduction in total SA levels in transgenic potato plants expressing the bacterial salicylate hydroxylase gene (nahG), there was no significant increase in disease severity when infected by Phytophthora infestans. Therefore, the high basal level of SA does not lead to constitutive resistance in healthy potato plants. However, in contrast to control plants, arachidonic acid failed to induce systematic acquired resistance (SAR) in nahG plants against P. infestans, indicating an essential role of SA in potato SAR. These results suggest that in potato the development of SAR against P. infestans may involve increased sensitivity of the plant to SA.
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Claims 6
Claim · model-written summary
The nahG transgene drastically reduced total SA in potato.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- expressing the bacterial salicylate hydroxylase gene (nahG)e0
- Gene
- nahGe0
- Outcome
- total SA levelse0
- Direction
- drastic reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a drastic reduction in total SA levels in transgenic potato plants expressing the bacterial salicylate hydroxylase gene (nahG)”
Claim · model-written summary
Reduced SA in nahG potatoes did not significantly increase P. infestans disease severity.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- nahGe1
- Interactor
- Phytophthora infestans
Phytophthora infestanse0pathogen - Outcome
- disease severitye0
- Direction
- no significant increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant increase in disease severity when infected by Phytophthora infestans.”
t0“Potato”
e1“a drastic reduction in total SA levels in transgenic potato plants expressing the bacterial salicylate hydroxylase gene (nahG)”
Claim · model-written summary
High basal SA did not confer constitutive resistance in healthy potato.
- Taxon
- potatoSolanum tuberosume0
- Compound
- SAe0
- Outcome
- constitutive resistancee0
- Direction
- does not lead toe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the high basal level of SA does not lead to constitutive resistance in healthy potato plants.”
Claim · model-written summary
Arachidonic acid failed to induce SAR against P. infestans in nahG potato, unlike controls.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- nahG plantse0
- Treatment
- arachidonic acide0
- Interactor
- P. infestansPhytophthora infestanse0pathogen
- Outcome
- systematic acquired resistance (SAR)e0
- Direction
- failed to inducee0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in contrast to control plants, arachidonic acid failed to induce systematic acquired resistance (SAR) in nahG plants against P. infestans”
t0“Potato”
e1“a drastic reduction in total SA levels in transgenic potato plants expressing the bacterial salicylate hydroxylase gene (nahG)”
Claim · model-written summary
SA was interpreted as essential to potato SAR against P. infestans.
- Taxon
- potatoSolanum tuberosume0
- Compound
- SAe0
- Outcome
- potato SARe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indicating an essential role of SA in potato SAR.”
Claim · model-written summary
Potato SAR against P. infestans may involve increased sensitivity to SA.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- P. infestansPhytophthora infestanse0pathogen
- Compound
- SAe0
- Outcome
- development of SARe0
- Qualifier
- increased sensitivity of the plant to SAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in potato the development of SAR against P. infestans may involve increased sensitivity of the plant to SA.”
The same questions in other papers
arachidonic acid · Phytophthora infestans · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- positive
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.