Abstract
The effects of NaCl salinity and CaCl2 concentrations on growth, dry matter allocation and ion uptake of sweet potato (Ipomoea batatas [L.] Lam.) plants were examined. Responses of sweet potato to salinity showed that plants growing in low Ca2+ exhibited severe growth reduction under salinity stress of 140 mM NaCl. Growth was reduced by NaCl salinity, and differences in ion uptake were observed between the plants receiving low and high concentrations of CaCl2. Relative growth rate (RGR) of sweet potato was only slightly reduced by salinity in the early stages, with a large reduction occurring in the later stages. Sweet potato had a higher dry matter allocation to its shoots as NaCl salinity reduced root growth more than it did shoot growth. Salinity tolerance of sweet potato appears to be associated with its ability to control rates of Na+, K+ and Ca2+ ion uptake and transport, in order to maintain ionic adjustments within the plant tissues during salt stress. There appears to be a salt tolerance mechanism operating in which, during salt stress, ionic adjustment within the plant tissues of sweet potato cultivar is maintained by controlling the rates of ion uptake and transport.
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Claims 9
Claim · model-written summary
At low calcium, 140 mM NaCl caused severe sweet potato growth reduction.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- salinity stress of 140 mM NaCle0
- Outcome
- growthe0
- Direction
- reductione0
- Qualifier
- low Ca2+e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“plants growing in low Ca2+ exhibited severe growth reduction under salinity stress of 140 mM NaCl”
t0“Sweet Potato”
Claim · model-written summary
NaCl salinity reduced sweet potato growth.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- NaCl salinitye0
- Outcome
- Growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth was reduced by NaCl salinity”
t0“Sweet Potato”
Claim · model-written summary
Ion uptake differed between low and high CaCl2 concentrations.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- lowe0
- Outcome
- ion uptakee0
- Comparator
- high concentrations of CaCl2e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences in ion uptake were observed between the plants receiving low and high concentrations of CaCl2”
t0“Sweet Potato”
Claim · model-written summary
Salinity slightly reduced relative growth rate at early stages.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- salinitye0
- Outcome
- Relative growth rate (RGR)e0
- Direction
- reducede0
- Qualifier
- early stagese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative growth rate (RGR) of sweet potato was only slightly reduced by salinity in the early stages”
Claim · model-written summary
Salinity greatly reduced relative growth rate at later stages.
- Taxon
- sweet potatoIpomoea batatast0
- Direction
- reductione0
- Qualifier
- later stagese0
Not reportedTreatmentComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a large reduction occurring in the later stages”
t0“Sweet Potato”
Claim · model-written summary
Salinity increased dry matter allocation to sweet potato shoots.
- Taxon
- Sweet potatoIpomoea batatase0
- Treatment
- NaCl salinitye0
- Outcome
- dry matter allocation to its shootse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sweet potato had a higher dry matter allocation to its shoots as NaCl salinity reduced root growth more than it did shoot growth”
Claim · model-written summary
NaCl salinity reduced root growth more than shoot growth.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- NaCl salinitye0
- Outcome
- root growthe0
- Direction
- reducede0
- Comparator
- shoot growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl salinity reduced root growth more than it did shoot growth”
t0“Sweet Potato”
Claim · model-written summary
Sweet potato salinity tolerance appears associated with regulating Na+, K+, and Ca2+ uptake and transport.
- Taxon
- sweet potatoIpomoea batatase0
- Compound
- Na+, K+ and Ca2+e0
- Outcome
- Salinity tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity tolerance of sweet potato appears to be associated with its ability to control rates of Na+, K+ and Ca2+ ion uptake and transport”
Claim · model-written summary
Ionic adjustment during salt stress appears maintained by control of uptake and transport rates.
- Taxon
- sweet potatoIpomoea batatase0
- Outcome
- ionic adjustmente0
- Qualifier
- controlling the rates of ion uptake and transporte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during salt stress, ionic adjustment within the plant tissues of sweet potato cultivar is maintained by controlling the rates of ion uptake and transport”
The same questions in other papers
sodium chloride · growth · Ipomoea batatas (sweet potato)Results differ
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- negative
2 papers more in this group
See all 6 papers →salinity · growth · Ipomoea batatas (sweet potato)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
2 papers more in this group
See all 6 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.