Abstract
With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1). The FSPD1-transgenic plants showed twice as high spermidine content as the wild type (WT) counterpart in both leaves and storage roots. One of the most characteristic features of the transgenic plants was the increase in the number of storage roots formed under both non-stress and stressful environments. Salt and drought stresses suppressed storage root growth, but the transgenic plants were less affected producing significantly larger mass of storage roots and starches than WT plants under either stress. The transgenic plants also showed increased tolerance to chilling- and heat-mediated damage to photosynthesis compared to the WT plants. Thus, sweet potato was made more tolerant to environmental stresses through introduction of the FSPD1 genes. This improved tolerance may involve enhanced oxidative stress tolerance at least partially because the transgenic plants were more tolerant to paraquat, a potent oxidative stress inducer, than the WT plants. From these results, the FSPD1 gene is considered useful for gene transfer technology aiming at improving environmental stress tolerance of sweet potato.
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Claims 8
Claim · model-written summary
FSPD1 transgenic sweet potato plants had twice the spermidine content of wild type in leaves and storage roots.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase0 - Material
- Kokei 14e0
- Organ / stage
- leaves and storage rootse1
- Treatment
- FSPD1-transgenic plantse1
- Gene
- FSPD1e1
- Outcome
- spermidine contente1
- Direction
- twice as highe1
- Value
- twicee1
- Comparator
- wild type (WT) counterparte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e1“The FSPD1-transgenic plants showed twice as high spermidine content as the wild type (WT) counterpart in both leaves and storage roots”
Claim · model-written summary
FSPD1 transgenic sweet potato plants formed more storage roots under both non-stress and stressful conditions.
- Taxon
- sweet potatoIpomoea batatase0
- Organ / stage
- storage rootse2
- Treatment
- transgenic plantse2
- Outcome
- number of storage rootse2
- Direction
- increasee2
- Qualifier
- under both non-stress and stressful environmentse2
- Comparator
- wild type (WT)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e1“The FSPD1-transgenic plants showed twice as high spermidine content as the wild type (WT) counterpart in both leaves and storage roots”
e2“One of the most characteristic features of the transgenic plants was the increase in the number of storage roots formed under both non-stress and stressful environments”
Claim · model-written summary
Salt and drought stresses suppressed storage root growth in sweet potato.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- Salt and drought stressese3
- Outcome
- storage root growthe3
- Direction
- suppressede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e3“Salt and drought stresses suppressed storage root growth, but the transgenic plants were less affected producing significantly larger mass of storage roots and starches than WT plants under either stress”
Claim · model-written summary
Under salt and drought stress, FSPD1 transgenic plants had significantly larger mass of storage roots and starches than wild type.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- Salt and drought stressese3
- Outcome
- mass of storage roots and starchese3
- Direction
- significantly largere3
- Qualifier
- under either stresse3
- Comparator
- WT plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e3“Salt and drought stresses suppressed storage root growth, but the transgenic plants were less affected producing significantly larger mass of storage roots and starches than WT plants under either stress”
Claim · model-written summary
FSPD1 transgenic sweet potato plants showed increased tolerance to chilling- and heat-mediated damage to photosynthesis compared with wild type.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- chilling- and heat-mediatede4
- Outcome
- tolerance to chilling- and heat-mediated damage to photosynthesise4
- Direction
- increasede4
- Comparator
- WT plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e4“The transgenic plants also showed increased tolerance to chilling- and heat-mediated damage to photosynthesis compared to the WT plants”
Claim · model-written summary
FSPD1 transgenic sweet potato plants were more tolerant to paraquat, an oxidative stress inducer, than wild type.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- paraquate5
- Outcome
- tolerant to paraquate5
- Direction
- more tolerante5
- Comparator
- WT plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e5“the transgenic plants were more tolerant to paraquat, a potent oxidative stress inducer, than the WT plants”
Claim · model-written summary
The improved stress tolerance may involve enhanced oxidative stress tolerance in sweet potato.
- Taxon
- sweet potatoIpomoea batatase0
- Outcome
- improved tolerancee6
- Qualifier
- enhanced oxidative stress tolerancee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e6“This improved tolerance may involve enhanced oxidative stress tolerance at least partially”
Claim · model-written summary
The FSPD1 gene is considered useful for gene transfer technology to improve stress tolerance of sweet potato.
- Taxon
- sweet potatoIpomoea batatase0
- Gene
- FSPD1e7
- Outcome
- useful for gene transfer technologye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the purpose of enhancing environmental stress tolerance of sweet potato (Ipomoea batatas, cv. Kokei 14), we transformed this plant with spermidine synthase genes derived from Cucurbita ficifolia (FSPD1)”
e7“From these results, the FSPD1 gene is considered useful for gene transfer technology aiming at improving environmental stress tolerance of sweet potato”
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See all 12 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.