Abstract
Foliar late blight is one of the most important diseases of potato. Foliar blight resistance has been shown to change as a plant ages. In other pathosystems, resistance (R) gene transcript levels appear to be correlated to disease resistance. The cloning of the broad-spectrum, foliar blight resistance gene RB provided the opportunity to explore how foliar blight resistance and R-gene transcript levels vary with plant age. Plants of Solanum bulbocastanum PT29, from which RB, including the native promoter and other flanking regions, was cloned, and S. tuberosum cv. Dark Red Norland (nontransformed and RB-transformed) representing three different developmental stages were screened for resistance to late blight and RB transcript levels. Preflowering plants of all genotypes exhibited the highest levels of resistance, followed by postflowering and near-senescing plants. The RB transgene significantly affected resistance, enhancing resistance levels of all RB-containing lines, especially in younger plants. RB transgene transcripts were detected at all plant ages, despite weak correlation with disease resistance. Consistent transcript levels in plants of different physiological ages with variable levels of disease resistance demonstrate that changes in disease-resistance phenotypes associated with plant age cannot be attributed to changes in R-gene transcript abundance.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Preflowering plants of all genotypes had the highest late blight resistance, followed by postflowering and near-senescing plants.
- Taxon
- potato
Solanum tuberosume1 - Organ / stage
- Prefloweringe0
- Outcome
- levels of resistancee0
- Direction
- higheste0
- Comparator
- postflowering and near-senescing plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preflowering plants of all genotypes exhibited the highest levels of resistance, followed by postflowering and near-senescing plants.”
e1“Foliar late blight is one of the most important diseases of potato.”
Claim · model-written summary
The RB transgene significantly increased late blight resistance in all RB-containing lines, especially younger plants.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- RB transgenee0
- Gene
- RB transgenee0
- Outcome
- resistance levelse0
- Direction
- enhancinge0
- Qualifier
- especially in younger plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The RB transgene significantly affected resistance, enhancing resistance levels of all RB-containing lines, especially in younger plants.”
t0“diseases of potato.”
Claim · model-written summary
RB transgene transcripts were detected at all plant ages.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- RB transgenee0
- Outcome
- RB transgene transcripts were detected at all plant agese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RB transgene transcripts were detected at all plant ages, despite weak correlation with disease resistance.”
t0“diseases of potato.”
Claim · model-written summary
RB transcript levels correlated weakly with disease resistance.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- RB transgenee0
- Outcome
- disease resistancee0
- Qualifier
- weak correlatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RB transgene transcripts were detected at all plant ages, despite weak correlation with disease resistance.”
t0“diseases of potato.”
Claim · model-written summary
Age-associated changes in resistance could not be attributed to R-gene transcript abundance.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- R-gene transcript abundancee0
- Outcome
- changes in disease-resistance phenotypes associated with plant agee0
- Qualifier
- cannot be attributed to changes in R-gene transcript abundancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consistent transcript levels in plants of different physiological ages with variable levels of disease resistance demonstrate that changes in disease-resistance phenotypes associated with plant age cannot be attributed to changes in R-gene transcript abundance.”
t0“diseases of potato.”
The same questions in other papers
transgenic · disease · Solanum tuberosum (potato)Positive and negative results
14 papers in the same direction as this paper · 3 in the opposite direction
- positive
- negative
- negative
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.