Abstract
Increased calcium (Ca) in potatoes may increase the production rate by enhancing tuber quality and storability. Additionally, increased Ca levels in important agricultural crops may help ameliorate the incidence of osteoporosis. However, the capacity to alter Ca levels in potato tubers through genetic manipulations has not been previously addressed. Here we demonstrate that potato tubers expressing the Arabidopsis H+/Ca2+ transporter sCAX1 (N-terminal autoinhibitory domain truncated version of CAtion eXchanger 1) contain up to 3-fold more Ca than wild-type tubers. The increased Ca appears to be distributed throughout the tuber. The sCAX1-expressing potatoes have normally undergone the tuber/plant/tuber cycle for three generations; the trait appeared stable through successive generations. The expression of sCAX1 does not appear to alter potato growth and development. Furthermore, increased Ca levels in sCAX1-expressing tubers do not appear to alter tuber morphology or yield. Given the preponderance of potato consumption worldwide, these transgenic plants may be a means of marginally increasing Ca intake levels in the population. To our knowledge, this study represents the first attempts to use biotechnology to increase the Ca content of potatoes.
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Claims 6
Claim · model-written summary
Potato tubers expressing sCAX1 contained up to threefold more calcium than wild type tubers.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- expressing the Arabidopsis H+/Ca2+ transporter sCAX1e0
- Gene
- Arabidopsis H+/Ca2+ transporter sCAX1e0
- Outcome
- Cae0
- Direction
- moree0
- Value
- up to 3-folde0
- Comparator
- wild-type tuberse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato tubers expressing the Arabidopsis H+/Ca2+ transporter sCAX1 (N-terminal autoinhibitory domain truncated version of CAtion eXchanger 1) contain up to 3-fold more Ca than wild-type tubers.”
Claim · model-written summary
Increased calcium appeared distributed throughout the potato tuber.
- Taxon
- potatoSolanum tuberosumt0
- Organ / stage
- tubere0
- Outcome
- Ca appears to be distributed throughout the tubere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased Ca appears to be distributed throughout the tuber.”
t0“Potato”
Claim · model-written summary
The sCAX1 potato trait appeared stable for three tuber-to-plant cycles.
- Taxon
- potatoesSolanum tuberosume0
- Gene
- sCAX1e0
- Outcome
- trait appeared stable through successive generationse0
- Value
- three generationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sCAX1-expressing potatoes have normally undergone the tuber/plant/tuber cycle for three generations; the trait appeared stable through successive generations.”
Claim · model-written summary
sCAX1 expression did not appear to alter potato growth and development.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- expression of sCAX1e0
- Gene
- sCAX1e0
- Outcome
- potato growth and developmente0
- Direction
- does not appear to altere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of sCAX1 does not appear to alter potato growth and development.”
Claim · model-written summary
Increased calcium in sCAX1 tubers did not appear to alter tuber morphology.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- sCAX1e0
- Outcome
- tuber morphologye0
- Direction
- do not appear to altere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased Ca levels in sCAX1-expressing tubers do not appear to alter tuber morphology or yield.”
t0“Potato”
Claim · model-written summary
Increased calcium in sCAX1 tubers did not appear to alter yield.
- Taxon
- potatoSolanum tuberosumt0
- Gene
- sCAX1e0
- Outcome
- yielde0
- Direction
- do not appear to altere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased Ca levels in sCAX1-expressing tubers do not appear to alter tuber morphology or yield.”
t0“Potato”
The same questions in other papers
transgenic · growth · Solanum tuberosum (potato)Positive and negative results
5 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 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.