Abstract
Silicon (Si) could alleviate the adverse effect of salinity in many crops, but the effect in cotton remains unclear. In this study, we evaluated the role of Si in regulating the salt stress tolerance of cotton by analyzing the induced morpho-physiological changes. A hydroponic experiment was conducted by using contrasting salt-tolerant cotton genotypes (sensitive Z0102; tolerant Z9807) and four treatments (CK, control; CKSi, 0.4 mM Si; NaCl, 150 mM NaCl; NaClSi, 150 mM NaCl+0.4 mM Si). The results showed that Si significantly enhanced the net photosynthesis rate and improved the growth of cotton seedling under salt stress in both salt-sensitive and salt-tolerant genotypes. Exogenous Si significantly reduced the accumulation of reactive oxygen species (ROS) and decreased the malondialdehyde (MDA) content in salt-stressed cotton. In addition, the application of Si up-regulated the expression of CAT1, SODCC and POD, and significantly enhanced the antioxidant enzymatic activities, such as catalase (CAT) and peroxidase (POD), of the salt-stressed cotton seedlings. Further, Si addition protected the integrity of the chloroplast ultrastructure, including key enzymes in photosynthesis such as ferredoxin-NADP reeducates (FNR), ATP synthase (Mg2+Ca2+-ATPase) and ribulose-1, 5-bisphosphate carboxylase/oxygenase (RubisCO), and the structure and function of the photosynthetic apparatus PSII from salt stress. Moreover, Si significantly increased the effective stomatal density and stomatal aperture in the salt-stressed cotton seedlings. Taken together, Si could likely ameliorate adverse effects of salt stress on cotton by improving the ROS scavenging ability and photosynthetic capacity.
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Claims 11
Claim · model-written summary
Silicon increased net photosynthesis under salt stress in both cotton genotypes.
- Taxon
- Gossypium hirsutum L.
Gossypium hirsutumt0 - Treatment
- Sie0
- Outcome
- net photosynthesis ratee0
- Direction
- enhancede0
- Qualifier
- under salt stress in both salt-sensitive and salt-tolerant genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Si significantly enhanced the net photosynthesis rate and improved the growth of cotton seedling under salt stress in both salt-sensitive and salt-tolerant genotypes”
Claim · model-written summary
Silicon improved cotton seedling growth under salt stress in both genotypes.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Sie0
- Outcome
- growth of cotton seedlinge0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Si significantly enhanced the net photosynthesis rate and improved the growth of cotton seedling under salt stress in both salt-sensitive and salt-tolerant genotypes”
Claim · model-written summary
Exogenous silicon reduced reactive oxygen species accumulation in salt-stressed cotton.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Exogenous Sie0
- Outcome
- accumulation of reactive oxygen species (ROS)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Exogenous Si significantly reduced the accumulation of reactive oxygen species (ROS) and decreased the malondialdehyde (MDA) content in salt-stressed cotton”
Claim · model-written summary
Exogenous silicon decreased malondialdehyde content in salt-stressed cotton.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Exogenous Sie0
- Outcome
- malondialdehyde (MDA) contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Exogenous Si significantly reduced the accumulation of reactive oxygen species (ROS) and decreased the malondialdehyde (MDA) content in salt-stressed cotton”
Claim · model-written summary
Silicon up-regulated CAT1, SODCC and POD expression in salt-stressed cotton.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Sie0
- Gene
- CAT1, SODCC and PODe0
- Outcome
- expression of CAT1, SODCC and PODe0
- Direction
- up-regulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“the application of Si up-regulated the expression of CAT1, SODCC and POD”
Claim · model-written summary
Silicon enhanced catalase and peroxidase activities in salt-stressed cotton seedlings.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Sie0
- Outcome
- antioxidant enzymatic activities, such as catalase (CAT) and peroxidase (POD)e0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Si up-regulated the expression of CAT1, SODCC and POD, and significantly enhanced the antioxidant enzymatic activities, such as catalase (CAT) and peroxidase (POD), of the salt-stressed cotton seedlings”
Claim · model-written summary
Silicon protected chloroplast ultrastructure under salt stress.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Si additione0
- Outcome
- integrity of the chloroplast ultrastructuree0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Si addition protected the integrity of the chloroplast ultrastructure”
Claim · model-written summary
Silicon protected photosynthetic enzymes under salt stress.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Silicont0
- Gene
- ferredoxin-NADP reeducates (FNR), ATP synthase (Mg2+Ca2+-ATPase) and ribulose-1, 5-bisphosphate carboxylase/oxygenase (RubisCO)e0
- Outcome
- key enzymes in photosynthesise0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“including key enzymes in photosynthesis such as ferredoxin-NADP reeducates (FNR), ATP synthase (Mg2+Ca2+-ATPase) and ribulose-1, 5-bisphosphate carboxylase/oxygenase (RubisCO)”
Claim · model-written summary
Silicon protected PSII structure and function under salt stress.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Silicont0
- Outcome
- structure and function of the photosynthetic apparatus PSIIe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“the structure and function of the photosynthetic apparatus PSII from salt stress”
Claim · model-written summary
Silicon increased effective stomatal density in salt-stressed cotton seedlings.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Sie0
- Outcome
- effective stomatal densitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Si significantly increased the effective stomatal density and stomatal aperture in the salt-stressed cotton seedlings”
Claim · model-written summary
Silicon increased stomatal aperture in salt-stressed cotton seedlings.
- Taxon
- Gossypium hirsutum L.Gossypium hirsutumt0
- Treatment
- Sie0
- Outcome
- stomatal aperturee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Ameliorative Effects of Silicon against Salt Stress in Gossypium hirsutum L.”
e0“Si significantly increased the effective stomatal density and stomatal aperture in the salt-stressed cotton seedlings”
The same questions in other papers
silicon atom · physiology: oxidative · Gossypium hirsutum (cotton)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
silicon atom · growth · Gossypium hirsutum (cotton)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
4 papers more in this group
See all 8 papers →silicon atom · physiology: antioxidant enzymes · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- positive
- positive
silicon atom · physiology: photosynthesis · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.