Abstract
China has the largest sweet potato planting area worldwide, as well as the highest yield per unit area and total yield. Drought is the most frequently encountered environmental stress during the sweet potato growing season. In this study, we investigated salicylic acid (SA)-mediated defense mechanisms under drought conditions in two sweet potato varieties, Zheshu 77 and Zheshu 13. Drought stress decreased growth traits, photosynthetic pigments and relative water contents, as well as the photosynthetic capability parameters net photosynthetic rate, stomatal conductance and transpiration rate, whereas it increased reactive oxygen species production, as well as malondialdehyde and abscisic acid contents. The application of SA to drought-stressed plants reduced oxidative damage by triggering the modulation of antioxidant enzyme activities and the maintenance of optimized osmotic environments in vivo in the two sweet potato varieties. After SA solution applications, NCED-like3 expression was downregulated and the abscisic acid contents of drought-stressed plants decreased, promoting photosynthesis and plant growth. Thus, foliar spraying an appropriate dose of SA, 2.00–4.00 mg·L−1, on drought-stressed sweet potato varieties may induce resistance in field conditions, thereby increasing growth and crop yield in the face of increasingly frequent drought conditions.
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Claims 7
Claim · model-written summary
Drought reduced growth traits, pigments and relative water content.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- Drought stresse0
- Outcome
- growth traits, photosynthetic pigments and relative water contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Drought stress decreased growth traits, photosynthetic pigments and relative water contents”
t0“Sweet Potato”
Claim · model-written summary
Drought reduced net photosynthesis, stomatal conductance and transpiration.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- Drought stresse0
- Outcome
- net photosynthetic rate, stomatal conductance and transpiration ratee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress decreased growth traits, photosynthetic pigments and relative water contents, as well as the photosynthetic capability parameters net photosynthetic rate, stomatal conductance and transpiration rate”
t0“Sweet Potato”
Claim · model-written summary
Drought increased reactive oxygen species, malondialdehyde and abscisic acid.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- Droughtt0
- Outcome
- reactive oxygen species production, as well as malondialdehyde and abscisic acid contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas it increased reactive oxygen species production, as well as malondialdehyde and abscisic acid contents”
t0“Sweet Potato Seedlings from Drought Stress”
Claim · model-written summary
SA reduced oxidative damage in drought-stressed plants.
- Taxon
- sweet potatoIpomoea batatase0
- Material
- two sweet potato varietiese0
- Treatment
- application of SAe0
- Outcome
- oxidative damagee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of SA to drought-stressed plants reduced oxidative damage by triggering the modulation of antioxidant enzyme activities and the maintenance of optimized osmotic environments in vivo in the two sweet potato varieties”
Claim · model-written summary
SA application downregulated NCED-like3 expression.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- SA solution applicationse0
- Gene
- NCED-like3e0
- Outcome
- NCED-like3 expressione0
- Direction
- downregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After SA solution applications, NCED-like3 expression was downregulated”
t0“Sweet Potato”
Claim · model-written summary
SA application decreased abscisic acid content in drought-stressed plants.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- SAt0
- Outcome
- abscisic acid contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the abscisic acid contents of drought-stressed plants decreased”
t0“Salicylic Acid Protects Sweet Potato”
Claim · model-written summary
The authors suggest foliar SA at 2.00–4.00 mg·L−1 to induce drought resistance and increase growth and yield.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- foliar spraying an appropriate dose of SA, 2.00–4.00 mg·L−1e0
- Outcome
- may induce resistance in field conditions, thereby increasing growth and crop yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spraying an appropriate dose of SA, 2.00–4.00 mg·L−1, on drought-stressed sweet potato varieties may induce resistance in field conditions, thereby increasing growth and crop yield”
The same questions in other papers
salicylic acid · molecular: expression · Ipomoea batatas (sweet potato)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
3 papers more in this group
See all 7 papers →drought · physiology: oxidative · Ipomoea batatas (sweet potato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
drought · physiology: photosynthesis · Ipomoea batatas (sweet potato)Results agree
4 papers in the same direction as this paper
- negative
- negative
- negative
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.