Abstract
In the present experiment, effects of sodium hydrosulfide (NaHS), a H2S donor, on the oxidative damage, antioxidant capacity and the growth of cucumber hypocotyls and radicles were studied under 100 mmol L−1 NaCl stress. NaCl treatment significantly induced accumulation of H2O2 and thiobarbituric acid-reactive substances (TBARS) in cucumber hypocotyls and radicles, and application of NaHS dramatically reduced the accumulation of H2O2 and lipid peroxidation. However, the alleviating effects greatly depended on the concentrations of NaHS, and 400 μmol L−1 NaHS treatment showed the most significant effects. Corresponding to the change of lipid peroxidation, higher activities of antioxidant enzymes as well as the antioxidant capacity indicated as DPPH scavenging activity, chelating activity of ferrous ions and hydroxyl radical (·OH) scavenging activity were induced by NaHS treatment under NaCl stress, especially by 400 μmol L−1 NaHS treatment. With the alleviating lipid peroxidation, the amylase activities in cotyledons were increased, and the length of cucumber hypocotyls and radicles were significantly promoted by NaHS treatment under NaCl stress. Unlike the effects of NaHS, pretreatment with other sodium salts including Na2S, Na2SO4, NaHSO4, Na2SO3, NaHSO3 and NaAc did not show significant effects on the growth of cucumber hypocotyls and radicles. These salts do not release H2S. Based on above results, it can be concluded that the effects of NaHS in the experiment depended on the H2S rather than other compounds derived from NaHS, and the alleviating effects might related with its function in modulating antioxidant capacity and amylase activities.
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Claims 9
Claim · model-written summary
NaCl significantly increased H2O2 and TBARS accumulation in cucumber hypocotyls and radicles.
- Taxon
- cucumber
Cucumis sativuse0 - Organ / stage
- hypocotyls and radiclese0
- Treatment
- NaCl treatmente0
- Outcome
- accumulation of H2O2 and thiobarbituric acid-reactive substances (TBARS)e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl treatment significantly induced accumulation of H2O2 and thiobarbituric acid-reactive substances (TBARS) in cucumber hypocotyls and radicles”
Claim · model-written summary
NaHS reduced H2O2 accumulation and lipid peroxidation under salt stress.
- Treatment
- application of NaHSe0
- Outcome
- accumulation of H2O2 and lipid peroxidatione0
- Direction
- reducede0
Not reportedTaxonComparator
Verbatim
e0“application of NaHS dramatically reduced the accumulation of H2O2 and lipid peroxidation”
Claim · model-written summary
The greatest alleviation was observed at 400 μmol L−1 NaHS.
- Treatment
- 400 μmol L−1 NaHS treatmente0
- Outcome
- most significant effectse0
- Direction
- moste0
- Value
- 400 μmol L−1e0
Not reportedTaxon
Verbatim
e0“400 μmol L−1 NaHS treatment showed the most significant effects”
Claim · model-written summary
NaHS increased antioxidant enzyme activities and antioxidant capacity under NaCl stress.
- Treatment
- NaHS treatmente0
- Outcome
- activities of antioxidant enzymes as well as the antioxidant capacitye0
- Direction
- highere0
- Qualifier
- under NaCl stresse0
Not reportedTaxonComparator
Verbatim
e0“higher activities of antioxidant enzymes as well as the antioxidant capacity indicated as DPPH scavenging activity, chelating activity of ferrous ions and hydroxyl radical (·OH) scavenging activity were induced by NaHS treatment under NaCl stress”
Claim · model-written summary
NaHS increased amylase activities in cotyledons under salt stress.
Not reportedTaxonTreatmentComparator
Verbatim
e0“the amylase activities in cotyledons were increased”
Claim · model-written summary
NaHS significantly promoted the length of cucumber hypocotyls and radicles under salt stress.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- NaHS treatmente0
- Outcome
- length of cucumber hypocotyls and radiclese0
- Direction
- promotede0
- Qualifier
- under NaCl stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the length of cucumber hypocotyls and radicles were significantly promoted by NaHS treatment under NaCl stress”
Claim · model-written summary
Other sodium salt pretreatments did not significantly affect cucumber hypocotyl and radicle growth.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- pretreatment with other sodium saltse0
- Outcome
- growth of cucumber hypocotyls and radiclese0
- Direction
- did not showe0
- Qualifier
- Na2S, Na2SO4, NaHSO4, Na2SO3, NaHSO3 and NaAce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretreatment with other sodium salts including Na2S, Na2SO4, NaHSO4, Na2SO3, NaHSO3 and NaAc did not show significant effects on the growth of cucumber hypocotyls and radicles”
Claim · model-written summary
The authors attribute NaHS effects to released H2S rather than other NaHS-derived compounds.
Not reportedTaxon
Verbatim
e0“the effects of NaHS in the experiment depended on the H2S rather than other compounds derived from NaHS”
Claim · model-written summary
The authors suggest that NaHS alleviation may involve modulation of antioxidant capacity and amylase activities.
Not reportedTaxon
Verbatim
e0“the alleviating effects might related with its function in modulating antioxidant capacity and amylase activities”
The same questions in other papers
sodium chloride · physiology: oxidative · Cucumis sativus (cucumber)Results agree
19 papers in the same direction as this paper
- negative
- negative
- negative
16 papers more in this group
See all 20 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.