Abstract
L.) is a widely popular vegetable fruit crop for human consumption. Soil salinity is among the most critical problems for agricultural production, food security, and sustainability. The transcriptomic and the primary molecular mechanisms that underlie the salt-induced responses in watermelon plants remain uncertain. In this study, the photosynthetic efficiency of photosystem II, free amino acids, and transcriptome profiles of watermelon seedlings exposed to short-term salt stress (300 mM NaCl) were analyzed to identify the genes and pathways associated with response to salt stress. We observed that the maximal photochemical efficiency of photosystem II decreased in salt-stressed plants. Most free amino acids in the leaves of salt-stressed plants increased many folds, while the percent distribution of glutamate and glutamine relative to the amino acid pool decreased. Transcriptome analysis revealed 7622 differentially expressed genes (DEGs) under salt stress, of which 4055 were up-regulated. The GO analysis showed that the molecular function term "transcription factor (TF) activity" was enriched. The assembled transcriptome demonstrated up-regulation of 240 and down-regulation of 194 differentially expressed TFs, of which the members of ERF, WRKY, NAC bHLH, and MYB-related families were over-represented. The functional significance of DEGs associated with endocytosis, amino acid metabolism, nitrogen metabolism, photosynthesis, and hormonal pathways in response to salt stress are discussed. The findings from this study provide novel insights into the salt tolerance mechanism in watermelon.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Maximal photosystem II photochemical efficiency decreased in salt-stressed watermelon.
- Taxon
- Watermelon
Citrullus lanatust0 - Treatment
- salt-stressede0
- Outcome
- maximal photochemical efficiency of photosystem IIe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the maximal photochemical efficiency of photosystem II decreased in salt-stressed plants”
t0“Watermelon”
Claim · model-written summary
Most free amino acids increased many folds in salt-stressed watermelon leaves.
- Taxon
- WatermelonCitrullus lanatust0
- Organ / stage
- leavese0
- Treatment
- salt-stressede0
- Outcome
- free amino acidse0
- Direction
- increasede0
- Value
- many foldse0
- Qualifier
- Moste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most free amino acids in the leaves of salt-stressed plants increased many folds”
t0“Watermelon”
Claim · model-written summary
Glutamate and glutamine percent distribution in the amino acid pool decreased under salt stress.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- salt-stressede0
- Outcome
- percent distribution of glutamate and glutaminee0
- Direction
- decreasede0
- Qualifier
- relative to the amino acid poole0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most free amino acids in the leaves of salt-stressed plants increased many folds, while the percent distribution of glutamate and glutamine relative to the amino acid pool decreased.”
t0“Watermelon”
Claim · model-written summary
Salt-stressed watermelon had 7622 differentially expressed genes.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- salt stresse0
- Outcome
- differentially expressed genese0
- Value
- 7622e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcriptome analysis revealed 7622 differentially expressed genes (DEGs) under salt stress”
t0“Watermelon”
Claim · model-written summary
Of the watermelon salt-responsive genes, 4055 were upregulated.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- salt stresse0
- Outcome
- differentially expressed genese0
- Direction
- up-regulatede0
- Value
- 4055e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Transcriptome analysis revealed 7622 differentially expressed genes (DEGs) under salt stress, of which 4055 were up-regulated.”
t0“Watermelon”
Claim · model-written summary
The transcription factor activity molecular function term was enriched in watermelon GO analysis.
- Taxon
- WatermelonCitrullus lanatust0
- Outcome
- transcription factor (TF) activitye0
- Direction
- enrichede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The GO analysis showed that the molecular function term "transcription factor (TF) activity" was enriched.”
t0“Watermelon”
Claim · model-written summary
Watermelon had 240 upregulated differentially expressed transcription factors.
- Taxon
- WatermelonCitrullus lanatust0
- Outcome
- differentially expressed TFse0
- Direction
- up-regulatione0
- Value
- 240e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The assembled transcriptome demonstrated up-regulation of 240 and down-regulation of 194 differentially expressed TFs”
t0“Watermelon”
Claim · model-written summary
Watermelon had 194 downregulated differentially expressed transcription factors.
- Taxon
- WatermelonCitrullus lanatust0
- Outcome
- differentially expressed TFse0
- Direction
- down-regulatione0
- Value
- 194e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The assembled transcriptome demonstrated up-regulation of 240 and down-regulation of 194 differentially expressed TFs”
t0“Watermelon”
Claim · model-written summary
ERF, WRKY and NAC bHLH family members were overrepresented among differentially expressed watermelon transcription factors.
- Taxon
- WatermelonCitrullus lanatust0
- Outcome
- members of ERF, WRKY, NAC bHLHe0
- Direction
- over-representede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the members of ERF, WRKY, NAC bHLH, and MYB-related families were over-represented”
t0“Watermelon”
Claim · model-written summary
MYB-related family members were overrepresented among differentially expressed watermelon transcription factors.
- Taxon
- WatermelonCitrullus lanatust0
- Outcome
- MYB-related familiese0
- Direction
- over-representede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the members of ERF, WRKY, NAC bHLH, and MYB-related families were over-represented”
t0“Watermelon”
The same questions in other papers
salinity · physiology: photosynthesis · Citrullus lanatus (watermelon)Results agree
6 papers in the same direction as this paper
- negative
- negative
- negative
3 papers more in this group
See all 7 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.