Abstract
ABSTRACT The objective of this study was to determine if treatment with silicon (Si) may improve nutrient uptake by soybean under ultraviolet-B (UV-B) radiation stress. Soybean (Glycine max L.) cultivars, ‘Kennong 18’ (K 18) and ‘Zhonghuang 13’ (ZH 13), were grown in hydroponic cultures under ambient and supplemental levels of ultraviolet-B (UV-B, 280–315 nm) with and without Si. Supplemental UV-B radiation simulating 30% stratospheric ozone depletion significantly decreased plant biomass by 74.9 to 135.6%, increased leaf nitrogen (N) and phosphorus (P) by 9% and 16%, respectively, decreased leaf magnesium (Mg) contents by 9%, and calcium (Ca) by 24%. UV-B radiation caused a substantial increase in the allocation of P, potassium (K) and Ca to roots compared with stem and leaves, presumably to ensure sustained nutrient uptake under the stress. Silicon application improved the uptake of P and Mg by 11%, which favored the partitioning of dry mass to shoots under UV-B radiation and the allocation of tissue P and Ca to roots. The overall changes due to Si supported a reasonable increase in dry mass of the ‘K 18’ cultivar.
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Claims 10
Claim · model-written summary
Supplemental UV-B decreased soybean biomass by 74.9 to 135.6%.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- Supplemental UV-B radiatione0
- Outcome
- plant biomasse0
- Direction
- decreasede0
- Value
- 74.9 to 135.6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplemental UV-B radiation simulating 30% stratospheric ozone depletion significantly decreased plant biomass by 74.9 to 135.6%”
t0“Soybean”
Claim · model-written summary
Supplemental UV-B increased leaf nitrogen by 9%.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf nitrogen (N) and phosphorus (P) by 9% and 16%, respectively”
t0“Soybean”
Claim · model-written summary
Supplemental UV-B increased leaf phosphorus by 16%.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased leaf nitrogen (N) and phosphorus (P) by 9% and 16%, respectively”
t0“Soybean”
Claim · model-written summary
Supplemental UV-B decreased leaf magnesium content by 9%.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- leaf magnesium (Mg) contentse0
- Direction
- decreasede0
- Value
- 9%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased leaf magnesium (Mg) contents by 9%”
t0“Soybean”
Claim · model-written summary
Supplemental UV-B decreased calcium content by 24%.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- calcium (Ca)e0
- Value
- 24%e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and calcium (Ca) by 24%”
t0“Soybean”
Claim · model-written summary
UV-B increased allocation of P, potassium and Ca to roots relative to stems and leaves.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- rootse0
- Treatment
- UV-B radiatione0
- Outcome
- allocation of P, potassium (K) and Ca to rootse0
- Direction
- increasee0
- Comparator
- stem and leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-B radiation caused a substantial increase in the allocation of P, potassium (K) and Ca to roots compared with stem and leaves”
t0“Soybean”
Claim · model-written summary
Silicon improved phosphorus and magnesium uptake by 11%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Silicon applicatione0
- Outcome
- uptake of P and Mge0
- Direction
- improvede0
- Value
- 11%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silicon application improved the uptake of P and Mg by 11%”
t0“Soybean”
Claim · model-written summary
Silicon favored dry mass partitioning to shoots under UV-B.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- partitioning of dry mass to shootse0
- Direction
- favorede0
- Qualifier
- under UV-B radiatione0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which favored the partitioning of dry mass to shoots under UV-B radiation”
t0“Soybean”
Claim · model-written summary
Silicon favored allocation of tissue P and Ca to roots.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- allocation of tissue P and Ca to rootse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and the allocation of tissue P and Ca to roots”
t0“Soybean”
Claim · model-written summary
Silicon changes supported increased dry mass in K 18.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The overall changes due to Si supported a reasonable increase in dry mass of the ‘K 18’ cultivar”
t0“Soybean”
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See all 50 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.