Abstract
Although the impact of sulfur (S) availability on the seed yield and nutritional quality of seeds has been demonstrated, its impact coupled with nitrogen (N) availability remains poorly studied in oilseed rape. A deeper knowledge of S and N interactions on seed yield components and seed quality could improve S and N fertilization management in a sustainable manner. To address this question, our goals were to determine the effects of nine different S fertilization management strategies (i) in interaction with different levels of N fertilization and (ii) according to the timing of application (by delaying and fractionating the S inputs) on agronomic performances and components of seed yield. The impact of these various managements of S and N fertilizations was also investigated on the seed quality with a focus on the composition of SSPs (mainly represented by napins and cruciferins). Our results highlighted synergetic effects on S and N use efficiencies at optimum rates of S and N inputs and antagonistic effects at excessive rates of one of the two elements. The data indicated that adjustment of S and N fertilization may lead to high seed yield and seed protein quality in a sustainable manner, especially in the context of reductions in N inputs. Delaying S inputs improved the seed protein quality by significantly increasing the relative abundance of napin (a SSP rich in S-containing amino acids) and decreasing the level of a cruciferin at 30 kDa (a SSP with low content of S-amino acids). These observations suggest that fractionated or delayed S fertilizer inputs could provide additional insights into the development of N and S management strategies to maintain or improve seed yield and protein quality. Our results also demonstrated that the S% in seeds and the napin:30 kDa-cruciferin ratio are highly dependent on S/N fertilization in relation to S supply. In addition, we observed a strong relationship between S% in seeds and the abundance of napin as well as the napin:30 kDa-cruciferin ratio, suggesting that S% may be used as a relevant index for the determination of protein quality in seeds in terms of S-containing amino acids.
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Claims 7
Claim · model-written summary
In oilseed rape, S and N fertilization had synergetic effects on S and N use efficiencies at optimum rates of S and N inputs and antagonistic effects at excessive rates of one of the two elements.
- Taxon
- Oilseed Rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- S and N inputse0
- Outcome
- S and N use efficienciese0
- Direction
- synergetice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
t0“Oilseed Rape”
e0“synergetic effects on S and N use efficiencies at optimum rates of S and N inputs and antagonistic effects at excessive rates of one of the two elements”
Claim · model-written summary
Delaying S inputs significantly increased the relative abundance of napin in oilseed rape seeds, improving seed protein quality.
- Taxon
- Oilseed RapeBrassica napust0
- Treatment
- Delaying S inputse0
- Outcome
- relative abundance of napine0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Oilseed Rape”
e0“Delaying S inputs improved the seed protein quality by significantly increasing the relative abundance of napin”
Claim · model-written summary
Delaying S inputs decreased the level of a cruciferin at 30 kDa, a seed storage protein with low content of S-amino acids, in oilseed rape seeds.
- Taxon
- Oilseed RapeBrassica napust0
- Treatment
- Delaying S inputse0
- Outcome
- level of a cruciferin at 30 kDae0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Oilseed Rape”
e0“Delaying S inputs improved the seed protein quality by significantly increasing the relative abundance of napin (a SSP rich in S-containing amino acids) and decreasing the level of a cruciferin at 30 kDa”
Claim · model-written summary
In oilseed rape, the S% in seeds and the napin:30 kDa-cruciferin ratio were highly dependent on S/N fertilization in relation to S supply.
- Taxon
- Oilseed RapeBrassica napust0
- Treatment
- S/N fertilizatione0
- Outcome
- S% in seeds and the napin:30 kDa-cruciferin ratioe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Oilseed Rape”
e0“the S% in seeds and the napin:30 kDa-cruciferin ratio are highly dependent on S/N fertilization in relation to S supply”
Claim · model-written summary
In oilseed rape there was a strong relationship between S% in seeds and the abundance of napin as well as the napin:30 kDa-cruciferin ratio.
- Taxon
- Oilseed RapeBrassica napust0
- Outcome
- abundance of napine0
- Qualifier
- S% in seedse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Oilseed Rape”
e0“a strong relationship between S% in seeds and the abundance of napin as well as the napin:30 kDa-cruciferin ratio”
Claim · model-written summary
The authors suggest that S% in seeds may be used as a relevant index for determining protein quality of oilseed rape seeds in terms of S-containing amino acids.
- Taxon
- Oilseed RapeBrassica napust0
- Outcome
- protein quality in seedse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Oilseed Rape”
e0“S% may be used as a relevant index for the determination of protein quality in seeds in terms of S-containing amino acids”
Claim · model-written summary
The authors conclude that adjustment of S and N fertilization may lead to high seed yield and seed protein quality in oilseed rape in a sustainable manner, especially with reduced N inputs.
- Taxon
- Oilseed RapeBrassica napust0
- Outcome
- high seed yield and seed protein qualitye0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Oilseed Rape”
e0“adjustment of S and N fertilization may lead to high seed yield and seed protein quality in a sustainable manner”