Abstract
The effects of NaCl treatment were analysed in two species of considerably different resistance. In glycophyte, the content of ascorbate decreased but lipophilic antioxidants (α-tocopherol, plastochromanol, and hydroxy-plastochromanol) increased due to 150 mM NaCl. In halophyte, 300 mM NaCl caused a significant increase in hydrophilic antioxidants (ascorbate, total glutathione) but not in the lipophilic antioxidants. The redox states of plastoquinone (PQ) and P700 were also differently modulated by salinity in both species, as illustrated by an increased oxidation of these components in glycophyte. The presented data suggest that E. salsugineum was able to avoid a harmful singlet oxygen production at PSII, which might be, at least in part, attributed to the induction of the ascorbate-glutathione cycle. Another important cue of a high salinity resistance of this species might be the ability to sustain a highly reduced states of PQ pool and P700 under stress, which however, drastically affect the NADPH yield.
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Claims 7
Claim · model-written summary
In glycophyte, 150 mM NaCl decreased ascorbate content.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- 150 mM NaCle0
- Outcome
- content of ascorbatee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“In glycophyte, the content of ascorbate decreased but lipophilic antioxidants (α-tocopherol, plastochromanol, and hydroxy-plastochromanol) increased due to 150 mM NaCl.”
Claim · model-written summary
In glycophyte, 150 mM NaCl increased three lipophilic antioxidants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- 150 mM NaCle0
- Outcome
- lipophilic antioxidants (α-tocopherol, plastochromanol, and hydroxy-plastochromanol)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“lipophilic antioxidants (α-tocopherol, plastochromanol, and hydroxy-plastochromanol) increased due to 150 mM NaCl”
Claim · model-written summary
In halophyte, 300 mM NaCl significantly increased ascorbate and total glutathione.
- Taxon
- Eutrema salsugineumEutrema salsugineumt0
- Treatment
- 300 mM NaCle0
- Outcome
- hydrophilic antioxidants (ascorbate, total glutathione)e0
- Direction
- increasee0
Not reportedComparator
Verbatim
t0“Eutrema salsugineum”
e0“In halophyte, 300 mM NaCl caused a significant increase in hydrophilic antioxidants (ascorbate, total glutathione) but not in the lipophilic antioxidants.”
Claim · model-written summary
In halophyte, 300 mM NaCl did not increase lipophilic antioxidants.
- Taxon
- Eutrema salsugineumEutrema salsugineumt0
- Treatment
- 300 mM NaCle0
- Outcome
- lipophilic antioxidantse0
Not reportedComparatorDirection
Verbatim
t0“Eutrema salsugineum”
e0“300 mM NaCl caused a significant increase in hydrophilic antioxidants (ascorbate, total glutathione) but not in the lipophilic antioxidants”
Claim · model-written summary
Salinity increased oxidation of plastoquinone and P700 in glycophyte.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- salinitye0
- Outcome
- oxidation of these componentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis thaliana”
e0“The redox states of plastoquinone (PQ) and P700 were also differently modulated by salinity in both species, as illustrated by an increased oxidation of these components in glycophyte.”
Claim · model-written summary
The authors suggest that E. salsugineum avoids harmful singlet oxygen production at PSII.
- Taxon
- Eutrema salsugineumEutrema salsugineumt0
- Outcome
- harmful singlet oxygen production at PSIIe0
- Qualifier
- induction of the ascorbate-glutathione cyclee0
Verbatim
t0“Eutrema salsugineum”
e0“E. salsugineum was able to avoid a harmful singlet oxygen production at PSII, which might be, at least in part, attributed to the induction of the ascorbate-glutathione cycle.”
Claim · model-written summary
The authors suggest that highly reduced PQ and P700 states under stress contribute to salinity resistance but drastically affect NADPH yield.
- Taxon
- Eutrema salsugineumEutrema salsugineumt0
- Outcome
- NADPH yielde0
- Qualifier
- highly reduced states of PQ pool and P700 under stresse0
Verbatim
t0“Eutrema salsugineum”
e0“the ability to sustain a highly reduced states of PQ pool and P700 under stress, which however, drastically affect the NADPH yield”
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