Abstract
Potato (Solanum tuberosum L.) is generally considered to be sensitive to drought stress. Even short periods of water shortage can result in reduced tuber production and quality. We previously reported that transgenic potato plants expressing the sweet potato orange gene (IbOr) under the control of the stress-inducible SWPA2 promoter (referred to as SOR plants) showed increased tolerance to methyl viologen-mediated oxidative stress and high salinity, along with increased carotenoid contents. In this study, in an effort to improve the productivity and environmental stress tolerance of potato, we subjected transgenic potato plants expressing IbOr to water-deficient conditions in the greenhouse. The SOR plants exhibited increased tolerance to drought stress under greenhouse conditions. IbOr expression was associated with slightly negative phenotypes, including reduced tuber production. Controlling IbOr expression imparted the same degree of drought tolerance while ameliorating these negative phenotypic effects, leading to levels of tuber production similar to or better than those of wild-type plants under drought stress conditions. In particular, under drought stress, drought tolerance and the production of marketable tubers (over 80g) were improved in transgenic plants compared with non-transgenic plants. These results suggest that expressing the IbOr transgene can lead to significant gains in drought tolerance and tuber production in potato, thereby improving these agronomically important traits.
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Claims 6
Claim · model-written summary
SOR potato plants showed increased drought tolerance in a greenhouse.
- Taxon
- potato
Solanum tuberosumt0 - Material
- SOR plantse0
- Treatment
- drought stresse0
- Outcome
- tolerance to drought stresse0
- Direction
- increasede0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SOR plants exhibited increased tolerance to drought stress under greenhouse conditions.”
t0“transgenic potato”
Claim · model-written summary
IbOr expression was associated with reduced tuber production.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- IbOre0
- Outcome
- tuber productione0
- Direction
- reducede0
- Qualifier
- slightly negative phenotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IbOr expression was associated with slightly negative phenotypes, including reduced tuber production.”
t0“transgenic potato”
Claim · model-written summary
Controlling IbOr expression maintained drought tolerance while ameliorating negative phenotypes.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Controlling IbOr expressione0
- Outcome
- drought tolerancee0
- Direction
- same degreee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Controlling IbOr expression imparted the same degree of drought tolerance while ameliorating these negative phenotypic effects”
t0“transgenic potato”
Claim · model-written summary
Controlled IbOr expression yielded tuber production similar to or better than wild type under drought.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Controlling IbOr expressione1
- Outcome
- tuber productione0
- Direction
- similar to or bettere0
- Qualifier
- under drought stress conditionse0
- Comparator
- wild-type plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to levels of tuber production similar to or better than those of wild-type plants under drought stress conditions.”
e1“Controlling IbOr expression imparted the same degree of drought tolerance”
t0“transgenic potato”
Claim · model-written summary
Transgenic potato had improved drought tolerance relative to non-transgenic plants under drought.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- transgenic plantse0
- Outcome
- drought tolerancee0
- Direction
- improvede0
- Qualifier
- under drought stresse0
- Comparator
- non-transgenic plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under drought stress, drought tolerance and the production of marketable tubers (over 80g) were improved in transgenic plants compared with non-transgenic plants.”
t0“transgenic potato”
Claim · model-written summary
Transgenic potato had improved production of marketable tubers over 80g relative to non-transgenic plants under drought.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- transgenic plantse0
- Outcome
- production of marketable tuberse0
- Direction
- improvede0
- Qualifier
- over 80ge0
- Comparator
- non-transgenic plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under drought stress, drought tolerance and the production of marketable tubers (over 80g) were improved in transgenic plants compared with non-transgenic plants.”
t0“transgenic potato”
The same questions in other papers
drought · disease · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
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1 paper more in this group
See all 5 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.