Abstract
Monocots and dicots differ in their boron (B) requirement, but also in their capacity to accumulate silicon (Si). Although an ameliorative effect of Si on B toxicity has been reported in various crops, differences among monocots and dicots are not clear, in particular in light of their ability to retain B in the leaf apoplast. In hydroponic experiments under controlled conditions, we studied the role of Si in the compartmentation of B within the leaves of wheat (Triticum vulgare L.) as a model of a high-Si monocot and sunflower (Helianthus annuus L.) as a model of a low-Si dicot, with the focus on the leaf apoplast. The stable isotopes 10B and 11B were used to investigate the dynamics of cell wall B binding capacity. In both crops, the application of Si did not affect B concentration in the root, but significantly decreased the B concentration in the leaves. However, the application of Si differently influenced the binding capacity of the leaf apoplast for excess B in wheat and sunflower. In wheat, whose capacity to retain B in the leaf cell walls is lower than in sunflower, the continuous supply of Si is crucial for an enhancement of high B tolerance in the shoot. On the other hand, the supply of Si did not contribute significantly in the extension of the B binding sites in sunflower leaves.
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Claims 8
Claim · model-written summary
Silicon did not change root boron concentration in wheat.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- application of Sie0
- Outcome
- B concentration in the roote0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both crops, the application of Si did not affect B concentration in the root”
t0“Wheat”
Claim · model-written summary
Silicon did not change root boron concentration in sunflower.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- application of Sie0
- Outcome
- B concentration in the roote0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both crops, the application of Si did not affect B concentration in the root”
t0“Sunflower”
Claim · model-written summary
Silicon significantly decreased leaf boron concentration in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- application of Sie0
- Outcome
- B concentration in the leavest0
- Direction
- decreasedt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of Si differently influenced the binding capacity of the leaf apoplast for excess B in wheat and sunflower.”
t0“significantly decreased the B concentration in the leaves”
Claim · model-written summary
Silicon significantly decreased leaf boron concentration in sunflower.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- application of Sie0
- Outcome
- B concentration in the leavest0
- Direction
- decreasedt0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of Si differently influenced the binding capacity of the leaf apoplast for excess B in wheat and sunflower.”
t0“significantly decreased the B concentration in the leaves”
Claim · model-written summary
Silicon affected excess boron binding capacity of the leaf apoplast differently in wheat and sunflower.
- Taxon
- wheatTriticum aestivume0
- Treatment
- application of Sie0
- Outcome
- binding capacity of the leaf apoplast for excess Be0
- Qualifier
- differentlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of Si differently influenced the binding capacity of the leaf apoplast for excess B in wheat and sunflower.”
Claim · model-written summary
Wheat retained less boron in leaf cell walls than sunflower.
- Taxon
- wheatTriticum aestivume0
- Outcome
- capacity to retain B in the leaf cell wallse0
- Direction
- lowere0
- Comparator
- sunflowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In wheat, whose capacity to retain B in the leaf cell walls is lower than in sunflower”
Claim · model-written summary
Continuous silicon supply was crucial for greater shoot tolerance of wheat to high boron.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- continuous supply of Sie0
- Outcome
- high B tolerance in the shoote0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the continuous supply of Si is crucial for an enhancement of high B tolerance in the shoot.”
t0“In wheat, whose capacity to retain B in the leaf cell walls is lower than in sunflower”
Claim · model-written summary
Silicon supply did not significantly extend boron binding sites in sunflower leaves.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- supply of Sie0
- Outcome
- extension of the B binding sites in sunflower leavese0
- Direction
- did not contributee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the supply of Si did not contribute significantly in the extension of the B binding sites in sunflower leaves.”
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See all 6 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.