Abstract
Waterlogging and submergence are major abiotic stresses impairing rapeseed development and hence evaluation of submergence tolerance ability is crucial for the development of tolerant lines through breeding approaches. This study investigated submergence impact on the survival rate, physiological responses, and transcriptomic variation of the young seedlings of 706 Brassica napus germplasm. We identified 57 highly tolerant and 109 highly susceptible accessions underwent six days submergence. Most accessions originated from the downstream of Yangtze River region had higher tolerance level. SOD enzymic activity increased both in the five representative tolerant and susceptible genotypes under submergence stress. POD activity also increased in the tolerant genotypes whereas CAT activity decreased, showing a opposite trend compared to the susceptible genotypes. The tolerant genotypes showed less chlorosis and produced less malondialdehyde than that in the susceptible group, while soluble protein content increased more than that in the susceptible genotypes. Transcriptome analysis detected 5,072 and 5,063 up-regulated genes, as well as 3,512 and 3,889 down-regulated genes in the tolerant / susceptible group in comparison to their respective control. Many genes encoding the transcription factors in AP2/ERF, bHLH, MYB, WRKY, and NAC families were also significantly regulated. The differentially expressed genes shared by the two pairs comparison were mainly enriched in such KEGG pathways as circadian rhythm, tryptophan metabolism, and porphyrin and chlorophyll metabolism. The specific pathways in the tolerant group were enriched in carbon metabolism, phenylpropanoid biosynthesis, and biosynthesis of amino acid, while the susceptible group was more distributed in hormone signal transduction, sucrose and starch metabolism, and vitamin B6 metabolism etc. The results uncovered distinct physiological and transcriptomic differences between tolerant and susceptible genotypes.
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Claims 17
Claim · model-written summary
Six days of submergence distinguished 57 highly tolerant accessions.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Material
- accessionse0
- Treatment
- six days submergencee0
- Outcome
- highly tolerante0
- Value
- 57e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“57 highly tolerant and 109 highly susceptible accessions underwent six days submergence”
t0“Brassica napus”
Claim · model-written summary
Six days of submergence distinguished 109 highly susceptible accessions.
- Taxon
- Brassica napusBrassica napust0
- Material
- accessionse0
- Treatment
- six days submergencee0
- Outcome
- highly susceptiblee0
- Value
- 109e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“57 highly tolerant and 109 highly susceptible accessions underwent six days submergence”
t0“Brassica napus”
Claim · model-written summary
Accessions from downstream Yangtze River generally had higher submergence tolerance.
- Taxon
- Brassica napusBrassica napust0
- Material
- accessionse0
- Outcome
- tolerance levele0
- Direction
- highere0
- Setting
- downstream of Yangtze River regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most accessions originated from the downstream of Yangtze River region had higher tolerance level”
t0“Brassica napus”
Claim · model-written summary
SOD activity increased under submergence in tolerant and susceptible genotypes.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- submergence stresse0
- Outcome
- SOD enzymic activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOD enzymic activity increased both in the five representative tolerant and susceptible genotypes under submergence stress”
t0“Brassica napus”
Claim · model-written summary
POD activity increased in tolerant genotypes.
- Taxon
- Brassica napusBrassica napust0
- Material
- tolerant genotypese0
- Treatment
- submergence stresse1
- Outcome
- POD activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“POD activity also increased in the tolerant genotypes whereas CAT activity decreased”
e1“under submergence stress”
t0“Brassica napus”
Claim · model-written summary
CAT activity decreased in tolerant genotypes.
- Taxon
- Brassica napusBrassica napust0
- Material
- tolerant genotypese0
- Treatment
- submergence stresse1
- Outcome
- CAT activitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“POD activity also increased in the tolerant genotypes whereas CAT activity decreased”
e1“under submergence stress”
t0“Brassica napus”
Claim · model-written summary
Tolerant genotypes had less chlorosis than susceptible genotypes.
- Taxon
- Brassica napusBrassica napust0
- Material
- tolerant genotypese0
- Outcome
- chlorosise0
- Direction
- lesse0
- Comparator
- susceptible groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tolerant genotypes showed less chlorosis and produced less malondialdehyde than that in the susceptible group”
t0“Brassica napus”
Claim · model-written summary
Tolerant genotypes produced less malondialdehyde than susceptible genotypes.
- Taxon
- Brassica napusBrassica napust0
- Material
- tolerant genotypese0
- Outcome
- malondialdehydee0
- Direction
- lesse0
- Comparator
- susceptible groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tolerant genotypes showed less chlorosis and produced less malondialdehyde than that in the susceptible group”
t0“Brassica napus”
Claim · model-written summary
Soluble protein increased more in tolerant than susceptible genotypes.
- Taxon
- Brassica napusBrassica napust0
- Outcome
- soluble protein contente0
- Direction
- increased moree0
- Comparator
- susceptible genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soluble protein content increased more than that in the susceptible genotypes”
t0“Brassica napus”
Claim · model-written summary
Tolerant genotypes had 5,072 up-regulated genes relative to controls.
- Taxon
- Brassica napusBrassica napust0
- Material
- tolerante0
- Outcome
- up-regulated genese0
- Value
- 5,072e0
- Comparator
- respective controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5,072 and 5,063 up-regulated genes, as well as 3,512 and 3,889 down-regulated genes in the tolerant / susceptible group in comparison to their respective control”
t0“Brassica napus”
Claim · model-written summary
Susceptible genotypes had 5,063 up-regulated genes relative to controls.
- Taxon
- Brassica napusBrassica napust0
- Material
- susceptiblee0
- Outcome
- up-regulated genese0
- Value
- 5,063e0
- Comparator
- respective controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5,072 and 5,063 up-regulated genes, as well as 3,512 and 3,889 down-regulated genes in the tolerant / susceptible group in comparison to their respective control”
t0“Brassica napus”
Claim · model-written summary
Tolerant genotypes had 3,512 down-regulated genes relative to controls.
- Taxon
- Brassica napusBrassica napust0
- Material
- tolerante0
- Outcome
- down-regulated genese0
- Value
- 3,512e0
- Comparator
- respective controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5,072 and 5,063 up-regulated genes, as well as 3,512 and 3,889 down-regulated genes in the tolerant / susceptible group in comparison to their respective control”
t0“Brassica napus”
Claim · model-written summary
Susceptible genotypes had 3,889 down-regulated genes relative to controls.
- Taxon
- Brassica napusBrassica napust0
- Material
- susceptiblee0
- Outcome
- down-regulated genese0
- Value
- 3,889e0
- Comparator
- respective controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5,072 and 5,063 up-regulated genes, as well as 3,512 and 3,889 down-regulated genes in the tolerant / susceptible group in comparison to their respective control”
t0“Brassica napus”
Claim · model-written summary
Transcription factor genes in AP2/ERF, bHLH, and MYB families were significantly regulated.
- Taxon
- Brassica napusBrassica napust0
- Gene
- AP2/ERF, bHLH, MYBe0
- Outcome
- significantly regulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Many genes encoding the transcription factors in AP2/ERF, bHLH, MYB, WRKY, and NAC families were also significantly regulated”
t0“Brassica napus”
Claim · model-written summary
Shared differentially expressed genes were enriched in circadian rhythm, tryptophan metabolism, and porphyrin and chlorophyll metabolism.
- Taxon
- Brassica napusBrassica napust0
- Outcome
- enriched in such KEGG pathways as circadian rhythm, tryptophan metabolism, and porphyrin and chlorophyll metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The differentially expressed genes shared by the two pairs comparison were mainly enriched in such KEGG pathways as circadian rhythm, tryptophan metabolism, and porphyrin and chlorophyll metabolism”
t0“Brassica napus”
Claim · model-written summary
Tolerant-group specific pathways were enriched in carbon metabolism, phenylpropanoid biosynthesis, and amino acid biosynthesis.
- Taxon
- Brassica napusBrassica napust0
- Material
- tolerant groupe0
- Outcome
- enriched in carbon metabolism, phenylpropanoid biosynthesis, and biosynthesis of amino acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The specific pathways in the tolerant group were enriched in carbon metabolism, phenylpropanoid biosynthesis, and biosynthesis of amino acid”
t0“Brassica napus”
Claim · model-written summary
Susceptible-group pathways were more distributed in hormone signaling, sucrose and starch metabolism, and vitamin B6 metabolism.
- Taxon
- Brassica napusBrassica napust0
- Material
- susceptible groupe0
- Outcome
- more distributed in hormone signal transduction, sucrose and starch metabolism, and vitamin B6 metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the susceptible group was more distributed in hormone signal transduction, sucrose and starch metabolism, and vitamin B6 metabolism”
t0“Brassica napus”
The same questions in other papers
flooding · physiology: antioxidant enzymes · Brassica napus (oilseed rape)Positive and negative results
6 in the opposite direction
- negative
- negative
- no effect
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.