Abstract
This study aims to explore the impacts of exogenous sorbitol on maize seedlings under polyethylene glycol (PEG)-simulated drought stress. Six treatments were set: normal condition (CK), PEG (P), 10 mM sorbitol (10S), PEG plus 10 mM sorbitol (10SP), 100 mM sorbitol (100S) and PEG plus 100 mM sorbitol (100SP). Maize seedlings’ growth under PEG-simulated drought stress was significantly inhibited and exogenous sorbitol largely alleviated this growth inhibition. The seedlings under 10SP treatment grew much better than those under P, 100S and 100SP treatments and no significant difference in growth parameters was observed between the control and 10S treatment. The seedlings treated with 10SP had higher contents of soluble sugar, soluble protein, proline, ascorbic acid (AsA), reduced glutathione (GSH), sorbitol and relative water content, higher activities of antioxidant enzymes and aldose reductase, but lower contents of malondialdehyde (MDA), H2O2 and relative electrical conductivity than those treated with P, 100S and 100SP. qRT-PCR analysis showed that the transcript levels of genes encoding putative aldose reductase (AR) under P treatment were significantly up-regulated in sorbitol-applied treatments. Taken together, the results demonstrated that exogenous sorbitol application conferred drought tolerance to maize seedlings by up-regulating the expression levels of AR-related genes to enhance the accumulation of intracellular osmotic substances such as sorbitol and improve antioxidant systems to tone down the damage caused by drought stress.
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
PEG drought inhibited maize seedling growth.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize seedlings’ growth under PEG-simulated drought stress was significantly inhibited and exogenous sorbitol largely alleviated this growth inhibition.”
Claim · model-written summary
Sorbitol alleviated drought-related growth inhibition.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize seedlings’ growth under PEG-simulated drought stress was significantly inhibited and exogenous sorbitol largely alleviated this growth inhibition.”
Claim · model-written summary
10SP seedlings grew better than P, 100S and 100SP seedlings.
- Treatment
- 10SP treatmente0
- Outcome
- grewe0
- Direction
- much bettere0
- Comparator
- P, 100S and 100SP treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedlings under 10SP treatment grew much better than those under P, 100S and 100SP treatments”
t0“Maize Seedlings”
Claim · model-written summary
Control and 10S treatments had no significant growth parameter difference.
- Treatment
- 10S treatmente0
- Outcome
- growth parameterse0
- Direction
- no significant differencee0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant difference in growth parameters was observed between the control and 10S treatment.”
t0“Maize Seedlings”
Claim · model-written summary
10SP raised soluble sugar, soluble protein and proline content relative to P, 100S and 100SP.
- Treatment
- 10SPe0
- Outcome
- contents of soluble sugar, soluble protein, prolinee0
- Direction
- highere0
- Comparator
- P, 100S and 100SPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedlings treated with 10SP had higher contents of soluble sugar, soluble protein, proline, ascorbic acid (AsA), reduced glutathione (GSH), sorbitol and relative water content, higher activities of antioxidant enzymes and aldose reductase, but lower contents of malondialdehyde (MDA), H2O2 and relative electrical conductivity than those treated with P, 100S and 100SP.”
t0“Maize Seedlings”
Claim · model-written summary
10SP raised ascorbic acid, glutathione and sorbitol content.
- Treatment
- 10SPe0
- Outcome
- ascorbic acid (AsA), reduced glutathione (GSH), sorbitole0
- Direction
- highere0
- Comparator
- P, 100S and 100SPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedlings treated with 10SP had higher contents of soluble sugar, soluble protein, proline, ascorbic acid (AsA), reduced glutathione (GSH), sorbitol and relative water content, higher activities of antioxidant enzymes and aldose reductase, but lower contents of malondialdehyde (MDA), H2O2 and relative electrical conductivity than those treated with P, 100S and 100SP.”
t0“Maize Seedlings”
Claim · model-written summary
10SP raised relative water content and antioxidant and aldose reductase activities.
- Treatment
- 10SPe0
- Outcome
- relative water content, higher activities of antioxidant enzymes and aldose reductasee0
- Direction
- highere0
- Comparator
- P, 100S and 100SPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedlings treated with 10SP had higher contents of soluble sugar, soluble protein, proline, ascorbic acid (AsA), reduced glutathione (GSH), sorbitol and relative water content, higher activities of antioxidant enzymes and aldose reductase, but lower contents of malondialdehyde (MDA), H2O2 and relative electrical conductivity than those treated with P, 100S and 100SP.”
t0“Maize Seedlings”
Claim · model-written summary
10SP lowered MDA, H2O2 and relative electrical conductivity.
- Treatment
- 10SPe0
- Outcome
- contents of malondialdehyde (MDA), H2O2 and relative electrical conductivitye0
- Direction
- lowere0
- Comparator
- P, 100S and 100SPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The seedlings treated with 10SP had higher contents of soluble sugar, soluble protein, proline, ascorbic acid (AsA), reduced glutathione (GSH), sorbitol and relative water content, higher activities of antioxidant enzymes and aldose reductase, but lower contents of malondialdehyde (MDA), H2O2 and relative electrical conductivity than those treated with P, 100S and 100SP.”
t0“Maize Seedlings”
Claim · model-written summary
Sorbitol treatment upregulated putative AR gene transcripts relative to PEG treatment.
- Treatment
- sorbitol-applied treatmentse0
- Gene
- genes encoding putative aldose reductase (AR)e0
- Outcome
- transcript levels of genes encoding putative aldose reductase (AR)e0
- Direction
- up-regulatede0
- Comparator
- P treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transcript levels of genes encoding putative aldose reductase (AR) under P treatment were significantly up-regulated in sorbitol-applied treatments.”
t0“Maize Seedlings”
The same questions in other papers
glucitol · disease · Zea mays (maize)Positive and negative results
1 in the opposite direction
- no effect
drought · growth · Zea mays (maize)Positive and negative results
307 papers in the same direction as this paper · 77 in the opposite direction
- negative
- negative
- positive
381 papers more in this group
See all 385 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.