Abstract
Although the effects of silicon application on enhancing plant salt tolerance have been widely investigated, the underlying mechanism has remained unclear. In this study, seedlings of cucumber, a medium silicon accumulator plant, grown in 0.83 mM silicon solution for 2 weeks were exposed to 65 mM NaCl solution for another 1 week. The dry weight and shoot/root ratio were reduced by salt stress, but silicon application significantly alleviated these decreases. The chlorophyll concentration, net photosynthetic rate, transpiration rate and leaf water content were higher in plants treated with silicon than in untreated plants under salt stress conditions. Further investigation showed that salt stress decreased root hydraulic conductance (Lp), but that silicon application moderated this salt-induced decrease in Lp. The higher Lp in silicon-treated plants may account for the superior plant water balance. Moreover, silicon application significantly decreased Na(+) concentration in the leaves while increasing K(+) concentration. Simultaneously, both free and conjugated types of polyamines were maintained at high levels in silicon-treated plants, suggesting that polyamines may be involved in the ion toxicity. Our results indicate that silicon enhances the salt tolerance of cucumber through improving plant water balance by increasing the Lp and reducing Na(+) content by increasing polyamine accumulation.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 9
Claim · model-written summary
Silicon application alleviated the salt-induced decreases in dry weight and shoot/root ratio of cucumber.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- silicon applicatione1
- Outcome
- dry weight and shoot/root ratioe1
- Direction
- alleviatede1
- Comparator
- salt stresse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e1“The dry weight and shoot/root ratio were reduced by salt stress, but silicon application significantly alleviated these decreases”
Claim · model-written summary
Under salt stress, silicon-treated cucumber plants had higher chlorophyll concentration and net photosynthetic rate than untreated plants.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- silicone2
- Outcome
- chlorophyll concentration, net photosynthetic ratee2
- Direction
- highere2
- Qualifier
- under salt stress conditionse2
- Comparator
- untreated plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e2“The chlorophyll concentration, net photosynthetic rate, transpiration rate and leaf water content were higher in plants treated with silicon than in untreated plants under salt stress conditions”
Claim · model-written summary
Under salt stress, silicon-treated cucumber plants had higher transpiration rate and leaf water content than untreated plants.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- silicone2
- Outcome
- transpiration rate and leaf water contente2
- Direction
- highere2
- Qualifier
- under salt stress conditionse2
- Comparator
- untreated plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e2“The chlorophyll concentration, net photosynthetic rate, transpiration rate and leaf water content were higher in plants treated with silicon than in untreated plants under salt stress conditions”
Claim · model-written summary
Silicon application moderated the salt-induced decrease in root hydraulic conductance of cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- silicon applicatione3
- Outcome
- root hydraulic conductance (Lp)e3
- Direction
- moderatede3
- Comparator
- salt stresse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e3“salt stress decreased root hydraulic conductance (Lp), but that silicon application moderated this salt-induced decrease in Lp”
Claim · model-written summary
Silicon application significantly decreased Na(+) concentration in cucumber leaves.
- Taxon
- cucumberCucumis sativuse0
- Organ / stage
- leavese4
- Treatment
- silicon applicatione4
- Outcome
- Na(+) concentratione4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e4“silicon application significantly decreased Na(+) concentration in the leaves while increasing K(+) concentration”
Claim · model-written summary
Silicon application increased K(+) concentration in cucumber leaves.
- Taxon
- cucumberCucumis sativuse0
- Organ / stage
- leavese4
- Treatment
- silicon applicatione4
- Outcome
- K(+) concentratione4
- Direction
- increasinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e4“silicon application significantly decreased Na(+) concentration in the leaves while increasing K(+) concentration”
Claim · model-written summary
Free and conjugated polyamines were maintained at high levels in silicon-treated cucumber plants.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- silicone5
- Outcome
- free and conjugated types of polyaminese5
- Direction
- maintained at high levelse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e5“both free and conjugated types of polyamines were maintained at high levels in silicon-treated plants”
Claim · model-written summary
Silicon may improve plant water balance of cucumber through higher root hydraulic conductance.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- plant water balancee6
- Qualifier
- higher Lpe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e6“The higher Lp in silicon-treated plants may account for the superior plant water balance”
Claim · model-written summary
Silicon enhances cucumber salt tolerance by reducing Na(+) content through increased polyamine accumulation.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- silicone7
- Compound
- polyaminee7
- Outcome
- salt tolerancee7
- Qualifier
- reducing Na(+) contente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of cucumber, a medium silicon accumulator plant”
e7“silicon enhances the salt tolerance of cucumber through improving plant water balance by increasing the Lp and reducing Na(+) content by increasing polyamine accumulation”
The same questions in other papers
silicon atom · physiology: gas exchange · Cucumis sativus (cucumber)Results differ
3 papers in the same direction as this paper
- positive
- positive
- positive
silicon atom · growth · Cucumis sativus (cucumber)Results differ
24 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- no effect
23 papers more in this group
See all 27 papers →silicon atom · physiology: water · Cucumis sativus (cucumber)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →silicon atom · physiology: photosynthesis · Cucumis sativus (cucumber)Results agree
9 papers in the same direction as this paper
- positive
- positive
- positive
6 papers more in this group
See all 10 papers →silicon atom · molecular: metabolites · Cucumis sativus (cucumber)Results agree
15 papers in the same direction as this paper
- positive
- positive
- positive
12 papers more in this group
See all 16 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.