Abstract
Hydrogen sulphide (H 2 S), a crucial gas signal molecule, has been reported to be involved in various processes related to development and adversity responses in plants. However, the effects and regulatory mechanism of H 2 S in controlling Fusarium head blight (FHB) in wheat have not been clarified. In this study, we first reported that H 2 S released by low concentrations of sodium hydrosulphide (NaHS) could significantly alleviate the FHB symptoms caused by Fusarium graminearum ( F. graminearum ) in wheat. We also used coleoptile inoculation to investigate the related physiological and molecular mechanism. The results revealed that FHB resistance was strongly enhanced by the H 2 S released by NaHS, and 0.3 mM was confirmed as the optimal concentration. H 2 S treatment dramatically reduced the levels of hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA) while enhancing the activities of antioxidant enzymes. Meanwhile, the relative expressions levels of defence-related genes, including PR1.1 , PR2 , PR3 , and PR4 , were all dramatically upregulated. Our results also showed that H 2 S was toxic to F. graminearum by inhibiting mycelial growth and spore germination. Taken together, the findings demonstrated the potential value of H 2 S in mitigating the adverse effects induced by F. graminearum and advanced the current knowledge regarding the molecular mechanisms in wheat.
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Claims 7
Claim · model-written summary
H2S released by low concentrations of NaHS could significantly alleviate Fusarium graminearum-caused FHB symptoms in wheat.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- low concentrations of sodium hydrosulphide (NaHS)e1
- Interactor
- Fusarium graminearum
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=60)
Fusarium graminearume1pathogen - Outcome
- FHB symptomse1
- Direction
- alleviatee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=500)
Verbatim
e1“H 2 S released by low concentrations of sodium hydrosulphide (NaHS) could significantly alleviate the FHB symptoms caused by Fusarium graminearum ( F. graminearum ) in wheat”
Claim · model-written summary
FHB resistance in wheat was strongly enhanced by H2S released by NaHS.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- H 2 S released by NaHSe1
- Outcome
- FHB resistancee1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“FHB resistance was strongly enhanced by the H 2 S released by NaHS”
t0“wheat”
Claim · model-written summary
The optimal NaHS-released H2S concentration for wheat was 0.3 mM.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- optimal concentratione1
- Value
- 0.3 mMe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“0.3 mM was confirmed as the optimal concentration”
t0“wheat”
Claim · model-written summary
H2S treatment reduced hydrogen peroxide and malondialdehyde levels in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- H 2 S treatmente1
- Outcome
- levels of hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA)e1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“H 2 S treatment dramatically reduced the levels of hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA)”
t0“wheat”
Claim · model-written summary
H2S treatment enhanced the activities of antioxidant enzymes in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- H 2 S treatmente1
- Outcome
- activities of antioxidant enzymese1
- Direction
- enhancinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“H 2 S treatment dramatically reduced the levels of hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA) while enhancing the activities of antioxidant enzymes”
t0“wheat”
Claim · model-written summary
H2S treatment dramatically upregulated the defence-related genes PR1.1, PR2, PR3 and PR4 in wheat.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- H 2 S treatmente2
- Gene
- PR1.1 , PR2 , PR3 , and PR4e1
- Outcome
- relative expressions levels of defence-related genese1
- Direction
- upregulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the relative expressions levels of defence-related genes, including PR1.1 , PR2 , PR3 , and PR4 , were all dramatically upregulated”
e2“H 2 S treatment”
t0“wheat”
Claim · model-written summary
H2S was toxic to Fusarium graminearum, inhibiting its mycelial growth and spore germination.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- H 2 Se1
- Interactor
- F. graminearumFusarium graminearume1pathogen
- Outcome
- mycelial growth and spore germinatione1
- Direction
- inhibitinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“H 2 S was toxic to F. graminearum by inhibiting mycelial growth and spore germination”
t0“wheat”
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