Abstract
Silicon (Si) is known to alleviate many nutritional stresses. However, in Brassica napus, which is a highly S-demanding species, the Si effect on S deficiency remains undocumented. The aim of this study was to assess whether Si alleviates the negative effects of S deficiency on Brassica napus and modulates root sulfate uptake capacity and S accumulation. For this, Brassica napus plants were cultivated with or without S and supplied or not supplied with Si. The effects of Si on S content, growth, expression of sulfate transporter genes (BnaSultr1.1; BnaSultr1.2) and sulfate transporters activity in roots were monitored. Si supply did not mitigate growth or S status alterations due to S deprivation but moderated the expression of BnaSultr1.1 in S-deprived plants without affecting the activity of root sulfate transporters. The effects of Si on the amount of S taken-up and on S transporter gene expression were also evaluated after 72 h of S resupply. In S-deprived plants, S re-feeding led to a strong decrease in the expression of both S transporter genes as expected, except in Si-treated plants where BnaSultr1.1 expression was maintained over time. This result is discussed in relation to the similar amount of S accumulated regardless of the Si treatment.
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Claims 7
Claim · model-written summary
Silicon did not mitigate growth effects of sulfur deprivation.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- Si supplye0
- Outcome
- growthe0
- Direction
- did not mitigatee0
- Qualifier
- S deprivatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Si supply did not mitigate growth or S status alterations due to S deprivation”
t0“Brassica napus”
Claim · model-written summary
Silicon did not mitigate sulfur status alterations caused by deprivation.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Si supplye0
- Outcome
- S status alterationse0
- Direction
- did not mitigatee0
- Qualifier
- S deprivatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si supply did not mitigate growth or S status alterations due to S deprivation”
t0“Brassica napus”
Claim · model-written summary
Silicon moderated BnaSultr1.1 expression in sulfur-deprived plants.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Si supplye0
- Gene
- BnaSultr1.1e0
- Outcome
- expression of BnaSultr1.1e0
- Qualifier
- S-deprived plantse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si supply did not mitigate growth or S status alterations due to S deprivation but moderated the expression of BnaSultr1.1 in S-deprived plants without affecting the activity of root sulfate transporters”
t0“Brassica napus”
Claim · model-written summary
Silicon did not affect root sulfate transporter activity.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Si supplye0
- Outcome
- activity of root sulfate transporterse0
- Direction
- without affectinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si supply did not mitigate growth or S status alterations due to S deprivation but moderated the expression of BnaSultr1.1 in S-deprived plants without affecting the activity of root sulfate transporters”
t0“Brassica napus”
Claim · model-written summary
Sulfur refeeding strongly decreased expression of both transporter genes in sulfur-deprived plants.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- S re-feedinge0
- Outcome
- expression of both S transporter genese0
- Direction
- decreasee0
- Qualifier
- S-deprived plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In S-deprived plants, S re-feeding led to a strong decrease in the expression of both S transporter genes as expected”
t0“Brassica napus”
Claim · model-written summary
With silicon, BnaSultr1.1 expression was maintained after sulfur refeeding.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Si-treatede0
- Gene
- BnaSultr1.1e0
- Outcome
- BnaSultr1.1 expressione0
- Direction
- maintainede0
- Qualifier
- over timee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“except in Si-treated plants where BnaSultr1.1 expression was maintained over time”
t0“Brassica napus”
Claim · model-written summary
Sulfur accumulation was similar regardless of silicon treatment.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Si treatmente0
- Outcome
- amount of S accumulatede0
- Direction
- similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“similar amount of S accumulated regardless of the Si treatment”
t0“Brassica napus”
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