Abstract
To analyze how silicon (Si) fertilizer improves plant growth under water stress, we investigated the growth and root responses of sorghum seedlings to Si application. Seedlings were grown hydroponically at two Si levels (0 and 1.78 mM) and under two water stress conditions simulated with polyethylene glycol. The reduction in dry weight due to stress was alleviated by Si application, accompanied by an increase in root water uptake. Silicon application decreased the osmotic potential of the roots without affecting their water content, showing that osmotic adjustment occurred to increase water uptake. An assessment of root solutes suggested that soluble sugar and amino acids (alanine and glutamic acid) were osmolytes responsible for this adjustment. Root anatomical traits related to water transport were not affected by the Si application. These results improved our understanding of the physiological mechanisms that underlie the Si-induced increases in sorghum growth and water uptake under water stress.
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Claims 7
Claim · model-written summary
Silicon alleviated the stress-induced reduction in sorghum dry weight.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SORGHUM”
e0“The reduction in dry weight due to stress was alleviated by Si application, accompanied by an increase in root water uptake.”
Claim · model-written summary
Silicon application increased sorghum root water uptake under stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SORGHUM”
e0“The reduction in dry weight due to stress was alleviated by Si application, accompanied by an increase in root water uptake.”
Claim · model-written summary
Silicon decreased sorghum root osmotic potential.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SORGHUM”
e0“Silicon application decreased the osmotic potential of the roots without affecting their water content, showing that osmotic adjustment occurred to increase water uptake.”
Claim · model-written summary
Silicon did not affect sorghum root water content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SORGHUM”
e0“Silicon application decreased the osmotic potential of the roots without affecting their water content, showing that osmotic adjustment occurred to increase water uptake.”
Claim · model-written summary
Osmotic adjustment increased sorghum water uptake after silicon application.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SORGHUM”
e0“Silicon application decreased the osmotic potential of the roots without affecting their water content, showing that osmotic adjustment occurred to increase water uptake.”
Claim · model-written summary
Soluble sugar, alanine and glutamic acid were suggested as osmolytes responsible for sorghum root osmotic adjustment.
- Organ / stage
- roote0
- Compound
- soluble sugar and amino acids (alanine and glutamic acid)e0
- Outcome
- adjustmente0
- Qualifier
- suggestede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SORGHUM”
e0“An assessment of root solutes suggested that soluble sugar and amino acids (alanine and glutamic acid) were osmolytes responsible for this adjustment.”
Claim · model-written summary
Silicon did not affect sorghum root anatomical traits related to water transport.
- Treatment
- Si applicatione0
- Outcome
- Root anatomical traits related to water transporte0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SORGHUM”
e0“Root anatomical traits related to water transport were not affected by the Si application.”
The same questions in other papers
silicon atom · growth · SorghumResults differ
15 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- no effect
16 papers more in this group
See all 20 papers →silicon atom · physiology: water · SorghumResults agree
3 papers in the same direction as this paper
- positive
- 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.