Abstract
Physiological adaptations, biochemical changes and growth performances of two sweet potatoes, Japanese Yellow (JPY) and Blackie (BLK), under NaCl salt stress were evaluated. Fallen leaves in JPY under 50 mM NaCl for 21 d were evidently observed, resulting in reduced leaf area (~60% reduction to that of control). Na+ content in the root of sweet potato BLK under salt stress was higher (54.18 mg g–1 DW) compared to the stem and leaf, whereas in case of JPY, all the plant organs were enriched by Na+, leading to reduced net photosynthetic rate (Pn) (71% reduction to that of control). Ca2+ and soluble sugar enrichments appeared to be the first line of defence mechanism in sweet potato to alleviate the Na+ toxicity, especially in BLK. A negative relation between Na+ accumulation and chlorophyll b content and a positive relation between chlorophyll b and Pn were demonstrated. Reduction in Pn in JPY under salt stress consequently reduced the leaf area, shoot height and fresh weight. It appeared that the Na+ enrichment, Ca2+ signalling and soluble sugars accumulation in the root tissues of cv. BLK played a key role in salt tolerance keeping Na+ in the vacuoles and maintaining growth of plants exposed to salt stress.
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Claims 10
Claim · model-written summary
JPY showed fallen leaves after 21 days at 50 mM NaCl.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Material
- JPYe0
- Treatment
- 50 mM NaCle0
- Outcome
- Fallen leavese0
- Qualifier
- 21 de0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Fallen leaves in JPY under 50 mM NaCl for 21 d were evidently observed”
t0“sweet potato (Ipomoea batatas)”
Claim · model-written summary
JPY leaf area was reduced by approximately 60% relative to control under salt stress.
- Taxon
- sweet potatoIpomoea batatast0
- Material
- JPYe0
- Treatment
- 50 mM NaCle0
- Outcome
- leaf areae0
- Direction
- reducede0
- Value
- ~60%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fallen leaves in JPY under 50 mM NaCl for 21 d were evidently observed, resulting in reduced leaf area (~60% reduction to that of control)”
t0“sweet potato”
Claim · model-written summary
Under salt stress, BLK root Na+ content was higher than stem and leaf content, at 54.18 mg g–1 DW.
- Taxon
- sweet potatoIpomoea batatase0
- Material
- BLKe0
- Organ / stage
- roote0
- Treatment
- salt stresse0
- Outcome
- Na+ contente0
- Direction
- highere0
- Value
- 54.18 mg g–1 DWe0
- Comparator
- stem and leafe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na+ content in the root of sweet potato BLK under salt stress was higher (54.18 mg g–1 DW) compared to the stem and leaf”
Claim · model-written summary
All JPY organs were enriched in Na+ under salt stress.
- Taxon
- sweet potatoIpomoea batatast0
- Material
- JPYe0
- Organ / stage
- all the plant organse0
- Treatment
- salt stresse1
- Outcome
- enriched by Na+e0
- Direction
- enrichede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas in case of JPY, all the plant organs were enriched by Na+”
t0“sweet potato”
e1“Na+ content in the root of sweet potato BLK under salt stress was higher”
Claim · model-written summary
JPY net photosynthetic rate was reduced by 71% relative to control.
- Taxon
- sweet potatoIpomoea batatast0
- Material
- JPYe0
- Treatment
- salt stresse1
- Outcome
- net photosynthetic ratee0
- Direction
- reducede0
- Value
- 71%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas in case of JPY, all the plant organs were enriched by Na+, leading to reduced net photosynthetic rate (Pn) (71% reduction to that of control)”
e1“Reduction in Pn in JPY under salt stress”
t0“sweet potato”
Claim · model-written summary
Ca2+ and soluble sugar enrichment appeared to alleviate Na+ toxicity, especially in BLK.
- Taxon
- sweet potatoIpomoea batatase0
- Material
- BLKe0
- Compound
- Ca2+ and soluble sugare0
- Outcome
- Na+ toxicitye0
- Direction
- alleviatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca2+ and soluble sugar enrichments appeared to be the first line of defence mechanism in sweet potato to alleviate the Na+ toxicity, especially in BLK”
Claim · model-written summary
Na+ accumulation was negatively related to chlorophyll b content.
- Taxon
- sweet potatoIpomoea batatast0
- Compound
- Na+e0
- Outcome
- chlorophyll b contente0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A negative relation between Na+ accumulation and chlorophyll b content”
t0“sweet potato”
Claim · model-written summary
Chlorophyll b was positively related to net photosynthetic rate.
- Taxon
- sweet potatoIpomoea batatast0
- Compound
- chlorophyll be0
- Outcome
- Pne0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a positive relation between chlorophyll b and Pn were demonstrated”
t0“sweet potato”
Claim · model-written summary
Reduced photosynthesis in salt-stressed JPY consequently reduced leaf area, shoot height and fresh weight.
- Taxon
- sweet potatoIpomoea batatast0
- Material
- JPYe0
- Treatment
- salt stresse0
- Outcome
- leaf area, shoot height and fresh weighte0
- Direction
- reducede0
- Qualifier
- Reduction in Pne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduction in Pn in JPY under salt stress consequently reduced the leaf area, shoot height and fresh weight”
t0“sweet potato”
Claim · model-written summary
BLK root Na+ enrichment, Ca2+ signalling and soluble sugar accumulation appeared to support salt tolerance through vacuolar Na+ retention and maintenance of growth.
- Taxon
- sweet potatoIpomoea batatast0
- Material
- BLKe0
- Organ / stage
- root tissuese0
- Compound
- Ca2+e0
- Outcome
- salt tolerancee0
- Qualifier
- keeping Na+ in the vacuoles and maintaining growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It appeared that the Na+ enrichment, Ca2+ signalling and soluble sugars accumulation in the root tissues of cv. BLK played a key role in salt tolerance keeping Na+ in the vacuoles and maintaining growth of plants exposed to salt stress”
t0“sweet potato”
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
- no effect
2 papers more in this group
See all 6 papers →salinity · physiology: photosynthesis · Ipomoea batatas (sweet potato)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.