Abstract
Nitric oxide (NO) is a second messenger with multifunction that is involved in plant growth, development and the acquisition of stress tolerance. In recent years, hydrogen sulphide (H(2)S) has been found to have similar functions, but crosstalk between NO and H(2)S in the acquisition of heat tolerance is not clear. In this study, pretreatment with the NO donor sodium nitroprusside (SNP) improved the survival percentage of maize seedlings and alleviated an increase in electrolyte leakage and a decrease in tissue vitality as well as accumulation of malondialdehyde, indicating that pretreatment with SNP improved the heat tolerance of maize seedlings. In addition, pretreatment with SNP enhanced the activity of L-cystine desulfhydrase, which, in turn, induced accumulation of endogenous H(2)S, while application of H(2)S donors, NaHS and GYY4137, increased endogenous H(2)S content, followed by mitigating increase in electrolyte leakage and enhanced survival percentage of seedlings under heat stress. Interestingly, SNP-induced heat tolerance was enhanced by application of NaHS and GYY4137, but was eliminated by inhibitors of H(2)S synthesis DL-propargylglycine, aminooxyacetic acid, potassium pyruvate and hydroxylamine, and the H(2)S scavenger hypotaurine. All of the above-mentioned results suggest that SNP pretreatment could improve heat tolerance, and H(2)S may be a downstream signal molecule in NO-induced heat tolerance of maize seedlings.
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Claims 12
Claim · model-written summary
SNP increased seedling survival under heat.
- Treatment
- pretreatment with the NO donor sodium nitroprusside (SNP)e0
- Outcome
- survival percentagee0
- Direction
- improvede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“pretreatment with the NO donor sodium nitroprusside (SNP) improved the survival percentage of maize seedlings”
Claim · model-written summary
SNP alleviated electrolyte leakage under heat.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“alleviated an increase in electrolyte leakage”
Claim · model-written summary
SNP alleviated loss of tissue vitality under heat.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“a decrease in tissue vitality”
Claim · model-written summary
SNP alleviated malondialdehyde accumulation.
- Outcome
- malondialdehydee0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“accumulation of malondialdehyde”
Claim · model-written summary
SNP enhanced L-cystine desulfhydrase activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“pretreatment with SNP enhanced the activity of L-cystine desulfhydrase”
Claim · model-written summary
SNP induced endogenous H(2)S accumulation.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“induced accumulation of endogenous H(2)S”
Claim · model-written summary
H(2)S donors raised endogenous H(2)S content.
- Treatment
- application of H(2)S donors, NaHS and GYY4137e0
- Outcome
- endogenous H(2)S contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“application of H(2)S donors, NaHS and GYY4137, increased endogenous H(2)S content”
Claim · model-written summary
H(2)S donors mitigated electrolyte leakage under heat.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“mitigating increase in electrolyte leakage”
Claim · model-written summary
H(2)S donors enhanced seedling survival under heat.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“enhanced survival percentage of seedlings under heat stress”
Claim · model-written summary
NaHS and GYY4137 enhanced SNP-induced heat tolerance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“SNP-induced heat tolerance was enhanced by application of NaHS and GYY4137”
Claim · model-written summary
H(2)S synthesis inhibitors eliminated SNP-induced heat tolerance.
- Treatment
- inhibitors of H(2)S synthesis DL-propargylglycine, aminooxyacetic acid, potassium pyruvate and hydroxylaminee0
- Direction
- eliminatede0
Not reportedComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“but was eliminated by inhibitors of H(2)S synthesis DL-propargylglycine, aminooxyacetic acid, potassium pyruvate and hydroxylamine”
Claim · model-written summary
Hypotaurine eliminated SNP-induced heat tolerance.
- Treatment
- hypotaurinee0
Not reportedComparatorOutcomeDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize (Zea mays L.) seedlings”
e0“and the H(2)S scavenger hypotaurine”
The same questions in other papers
sodium nitroprusside · molecular: metabolites · Zea mays (maize)Positive and negative results
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- negative
- negative
- positive
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See all 14 papers →nitric oxide donor · survival · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- 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.