Abstract
ABSTRACT Silicon (Si) protects plants from multiple abiotic and biotic stresses The effect of exogenous Si levels (50, 75, and 100 mg kg−1) on the growth, boron (B) and Si uptake, lipid peroxidation (MDA), lipoxygenase activity (LOX; EC 1.13.11.12), proline, and H2O2 accumulation, non-enzymatic antioxidant activity (AA) and the activities of major antioxidant enzymes (superoxide dismutase, SOD, EC 1.15.1.1; catalase, CAT, EC 1.11.1.6 and ascorbate peroxidase, APX, EC 1.11.1.11) of barley (Hordeum vulgare L.) were investigated under glasshouse conditions. Increasing levels of Si supplied to the soil with 20 mg kg−1 B counteracted the deleterious effects of B on shoot growth. Application of B significantly increased the B concentration in barley plants. However, Si application decreased B concentrations. Increasing application of Si increased the Si concentration in barley plants. The concentration of H2O2 was increased by B toxicity but decreased by Si supply. Boron toxicity decreased proline concentrations and increased lipid peroxidation (MDA content) and LOX activity of barley. Compared with control plants, the activities of AA, SOD, CAT, and APX in B stressed plants grown without Si decreased, and application of Si increased their activities under toxic B conditions. The LOX activity was decreased by Si. Based on the present work, it can be concluded that Si alleviates B toxicity by possibly preventing oxidative membrane damage, both through lowering the uptake of B and by increasing tolerance to excess B within the tissues. Keywords: antioxidant enzymesbarleyboron toxicitylipid peroxidationprolinenon-enzymatic antioxidantssilicon Notes *: P < 0.05 **: P < 0.01. **: P < 0.01.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Increasing silicon counteracted boron toxicity effects on barley shoot growth.
- Treatment
- Increasing levels of Sie0
- Outcome
- shoot growthe0
- Direction
- counteractede0
- Qualifier
- 20 mg kg−1 Be0
Not reportedTaxonComparator
Verbatim
e0“Increasing levels of Si supplied to the soil with 20 mg kg−1 B counteracted the deleterious effects of B on shoot growth.”
Claim · model-written summary
B application increased boron concentration in barley.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- Application of Be0
- Outcome
- B concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Application of B significantly increased the B concentration in barley plants.”
Claim · model-written summary
Silicon application decreased boron concentrations.
Not reportedTaxonComparator
Verbatim
e0“However, Si application decreased B concentrations.”
Claim · model-written summary
Increasing silicon application increased silicon concentration in barley.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Increasing application of Sie0
- Outcome
- Si concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing application of Si increased the Si concentration in barley plants.”
Claim · model-written summary
Boron toxicity increased hydrogen peroxide concentration.
Not reportedTaxonComparator
Verbatim
e0“The concentration of H2O2 was increased by B toxicity but decreased by Si supply.”
Claim · model-written summary
Silicon supply decreased hydrogen peroxide concentration.
Not reportedTaxonComparator
Verbatim
e0“The concentration of H2O2 was increased by B toxicity but decreased by Si supply.”
Claim · model-written summary
Boron toxicity decreased proline concentrations in barley.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Boron toxicitye0
- Outcome
- proline concentrationse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boron toxicity decreased proline concentrations and increased lipid peroxidation (MDA content) and LOX activity of barley.”
Claim · model-written summary
Boron toxicity increased lipid peroxidation in barley.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Boron toxicitye0
- Outcome
- lipid peroxidation (MDA content)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boron toxicity decreased proline concentrations and increased lipid peroxidation (MDA content) and LOX activity of barley.”
Claim · model-written summary
Boron toxicity increased LOX activity in barley.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- Boron toxicitye0
- Outcome
- LOX activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boron toxicity decreased proline concentrations and increased lipid peroxidation (MDA content) and LOX activity of barley.”
Claim · model-written summary
Boron stress without silicon decreased antioxidant activities relative to controls.
- Treatment
- B stressed plants grown without Sie0
- Outcome
- activities of AA, SOD, CAT, and APXe0
- Direction
- decreasede0
- Comparator
- control plantse0
Not reportedTaxon
Verbatim
e0“Compared with control plants, the activities of AA, SOD, CAT, and APX in B stressed plants grown without Si decreased”
Claim · model-written summary
Silicon increased antioxidant activities under toxic boron conditions.
Not reportedTaxonComparator
Verbatim
e0“application of Si increased their activities under toxic B conditions.”
Claim · model-written summary
Silicon decreased LOX activity.
Not reportedTaxonComparator
Verbatim
e0“The LOX activity was decreased by Si.”
Claim · model-written summary
Authors suggest silicon may alleviate boron toxicity through reduced boron uptake and prevention of oxidative membrane damage.
Not reportedTaxon
Verbatim
e0“Si alleviates B toxicity by possibly preventing oxidative membrane damage, both through lowering the uptake of B and by increasing tolerance to excess B within the tissues.”
The same questions in other papers
silicon atom · growth · Hordeum vulgare (barley)Results differ
10 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
9 papers more in this group
See all 13 papers →boron atom · quality: phytochemicals · Hordeum vulgare (barley)Positive and negative results
1 in the opposite direction
- positive
silicon atom · nutrient: content · Hordeum vulgare (barley)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
4 papers more in this group
See all 8 papers →silicon atom · physiology: oxidative · Hordeum vulgare (barley)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
silicon atom · quality: phytochemicals · Hordeum vulgare (barley)Results agree
4 papers in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
1 paper more in this group
See all 5 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.