Abstract
The yield of sweet potato [Ipomoea batatas (L.) Lam] can be easily threatened by drought stress. Typically, early stages like the seedling stage and tuber-root expansion stage are more vulnerable to drought stress. In this study, a highly drought-tolerant sweet potato cultivar “WanSu 63” was subjected to drought stress at both the seedling stage (15 days after transplanting, 15 DAT) and the tuber-root expansion stage (45 DAT). Twenty-four cDNA libraries were constructed from leaf segments and root tissues at 15 and 45 DAT for Next-Generation Sequencing. A total of 663, 063, and 218 clean reads were obtained and then aligned to the reference genome with a total mapped ratio greater than 82.73%. A sum of 7119, 8811, 5463, and 930 differentially expressed genes were identified from leaves in 15 days (L15), roots in 15 days (R15), leaves in 45 days (L45), and roots in 45 days (R45), respectively, in drought stress versus control. It was found that genes encoding heat shock proteins, sporamin, LEA protein dehydrin, ABA signaling pathway protein gene NCED1, as well as a group of receptor-like protein kinases genes were enriched in differentially expressed genes. ABA content was significantly higher in drought-treated tissues than in the control. The sweet potato biomass declined sharply to nearly one-quarter after drought stress. In conclusion, this study is the first to identify the differentially expressed drought-responsive genes and signaling pathways in the leaves and roots of sweet potato at the seedling and root expansion stages. The results provide potential resources for drought resistance breeding of sweet potato.
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Claims 11
Claim · model-written summary
Sequencing yielded 663, 063, and 218 clean reads.
- Taxon
- Sweet Potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Outcome
- clean readse0
- Value
- 663, 063, and 218e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“A total of 663, 063, and 218 clean reads were obtained and then aligned to the reference genome with a total mapped ratio greater than 82.73%.”
t0“Sweet Potato”
Claim · model-written summary
The total mapped ratio exceeded 82.73%.
- Taxon
- Sweet PotatoIpomoea batatast0
- Outcome
- total mapped ratioe0
- Direction
- greater thane0
- Value
- 82.73%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a total mapped ratio greater than 82.73%”
t0“Sweet Potato”
Claim · model-written summary
Drought versus control yielded 7119 differentially expressed genes in leaves at 15 days.
- Taxon
- Sweet PotatoIpomoea batatast0
- Organ / stage
- leaves in 15 dayse0
- Treatment
- drought stresse0
- Outcome
- differentially expressed genese0
- Value
- 7119e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A sum of 7119, 8811, 5463, and 930 differentially expressed genes were identified from leaves in 15 days (L15), roots in 15 days (R15), leaves in 45 days (L45), and roots in 45 days (R45), respectively, in drought stress versus control.”
t0“Sweet Potato”
Claim · model-written summary
Drought versus control yielded 8811 differentially expressed genes in roots at 15 days.
- Taxon
- Sweet PotatoIpomoea batatast0
- Organ / stage
- roots in 15 dayse0
- Treatment
- drought stresse0
- Outcome
- differentially expressed genese0
- Value
- 8811e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A sum of 7119, 8811, 5463, and 930 differentially expressed genes were identified from leaves in 15 days (L15), roots in 15 days (R15), leaves in 45 days (L45), and roots in 45 days (R45), respectively, in drought stress versus control.”
t0“Sweet Potato”
Claim · model-written summary
Drought versus control yielded 5463 differentially expressed genes in leaves at 45 days.
- Taxon
- Sweet PotatoIpomoea batatast0
- Organ / stage
- leaves in 45 dayse0
- Treatment
- drought stresse0
- Outcome
- differentially expressed genese0
- Value
- 5463e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A sum of 7119, 8811, 5463, and 930 differentially expressed genes were identified from leaves in 15 days (L15), roots in 15 days (R15), leaves in 45 days (L45), and roots in 45 days (R45), respectively, in drought stress versus control.”
t0“Sweet Potato”
Claim · model-written summary
Drought versus control yielded 930 differentially expressed genes in roots at 45 days.
- Taxon
- Sweet PotatoIpomoea batatast0
- Organ / stage
- roots in 45 dayse0
- Treatment
- drought stresse0
- Outcome
- differentially expressed genese0
- Value
- 930e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A sum of 7119, 8811, 5463, and 930 differentially expressed genes were identified from leaves in 15 days (L15), roots in 15 days (R15), leaves in 45 days (L45), and roots in 45 days (R45), respectively, in drought stress versus control.”
t0“Sweet Potato”
Claim · model-written summary
Genes encoding heat shock proteins, sporamin and LEA protein dehydrin were enriched among differentially expressed genes.
- Taxon
- Sweet PotatoIpomoea batatast0
- Gene
- heat shock proteins, sporamin, LEA protein dehydrine0
- Outcome
- enriched in differentially expressed genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was found that genes encoding heat shock proteins, sporamin, LEA protein dehydrin, ABA signaling pathway protein gene NCED1, as well as a group of receptor-like protein kinases genes were enriched in differentially expressed genes.”
t0“Sweet Potato”
Claim · model-written summary
NCED1 and receptor-like protein kinases genes were enriched among differentially expressed genes.
- Taxon
- Sweet PotatoIpomoea batatast0
- Gene
- NCED1e0
- Outcome
- enriched in differentially expressed genese0
- Qualifier
- a group of receptor-like protein kinases genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA signaling pathway protein gene NCED1, as well as a group of receptor-like protein kinases genes were enriched in differentially expressed genes.”
t0“Sweet Potato”
Claim · model-written summary
Drought-treated tissues had significantly higher ABA content than controls.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- drought-treatede0
- Outcome
- ABA contente0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA content was significantly higher in drought-treated tissues than in the control.”
t0“Sweet Potato”
Claim · model-written summary
Sweet potato biomass fell to nearly one-quarter after drought stress.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- drought stresse0
- Outcome
- biomasse0
- Direction
- declinede0
- Value
- nearly one-quartere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sweet potato biomass declined sharply to nearly one-quarter after drought stress.”
Claim · model-written summary
The identified genes and pathways provide potential resources for sweet potato drought-resistance breeding.
- Taxon
- sweet potatoIpomoea batatase0
- Outcome
- potential resources for drought resistance breedinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results provide potential resources for drought resistance breeding of sweet potato.”
The same questions in other papers
drought · growth · Ipomoea batatas (sweet potato)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
8 papers more in this group
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.