Abstract
BACKGROUND: Bacillus cereus C1L is a plant growth-promoting rhizobacterium and can elicit induced systemic resistance (ISR) in plants against necrotrophic pathogens. However, little is known about ISR elicitors produced by B. cereus C1L, and no ISR elicitor has been identified and characterised. Therefore, the objective of this study is to identify volatile ISR elicitor(s) produced by B. cereus C1L. RESULTS: The volatile metabolites produced by B. cereus C1L were extracted, separated and identified by solid-phase microextraction, gas chromatography and mass spectrometry. Dimethyl disulfide (DMDS) was the only separated metabolite being determined. Afterwards, application of DMDS by means of soil drench significantly protected tobacco and corn plants against Botrytis cinerea and Cochliobolus heterostrophus, respectively, under greenhouse conditions. The results reveal that DMDS could play an important role in ISR by B. cereus C1L. CONCLUSION: This is the first report of DMDS as an elicitor produced by an ISR-eliciting B. cereus strain and its ability to suppress plant fungal diseases under greenhouse conditions. It is suggested that DMDS has potential for practical use in controlling plant foliar diseases besides soil fumigation.
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Claims 5
Claim · model-written summary
Dimethyl disulfide was the sole separated volatile metabolite identified from Bacillus cereus C1L.
- Taxon
- tobacco and corn plants
Nicotiana tabacum
Zea mays subsp. mayse2 - Interactor
- B. cereus C1L
Bacillus cereuse1symbiont - Outcome
- Dimethyl disulfide (DMDS) was the only separated metabolitee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dimethyl disulfide (DMDS) was the only separated metabolite being determined.”
e1“volatile metabolites produced by B. cereus C1L”
e2“tobacco and corn plants”
Claim · model-written summary
Soil drench DMDS significantly protected tobacco against Botrytis cinerea in a greenhouse.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- application of DMDS by means of soil drenche0
- Interactor
- Botrytis cinerea
Botrytis cinereae0pathogen - Outcome
- protected tobacco and corn plants against Botrytis cinerea and Cochliobolus heterostrophuse0
- Direction
- protectede0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of DMDS by means of soil drench significantly protected tobacco and corn plants against Botrytis cinerea and Cochliobolus heterostrophus, respectively, under greenhouse conditions.”
Claim · model-written summary
Soil drench DMDS significantly protected corn against Cochliobolus heterostrophus in a greenhouse.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- application of DMDS by means of soil drenche0
- Interactor
- Cochliobolus heterostrophus
Bipolaris maydise0pathogen - Outcome
- protected tobacco and corn plants against Botrytis cinerea and Cochliobolus heterostrophuse0
- Direction
- protectede0
- Setting
- greenhouse conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of DMDS by means of soil drench significantly protected tobacco and corn plants against Botrytis cinerea and Cochliobolus heterostrophus, respectively, under greenhouse conditions.”
Claim · model-written summary
The authors infer that DMDS may contribute to induced systemic resistance elicited by B. cereus C1L.
- Taxon
- tobacco and corn plantsNicotiana tabacumZea mays subsp. mayse1
- Interactor
- B. cereus C1LBacillus cereuse0symbiont
- Compound
- DMDSe0
- Outcome
- ISRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DMDS could play an important role in ISR by B. cereus C1L”
e1“tobacco and corn plants”
Claim · model-written summary
The authors suggest DMDS for practical control of plant foliar diseases.
- Taxon
- tobacco and corn plantsNicotiana tabacumZea mays subsp. mayse1
- Compound
- DMDSe0
- Outcome
- practical use in controlling plant foliar diseasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DMDS has potential for practical use in controlling plant foliar diseases besides soil fumigation”
e1“tobacco and corn plants”
The same questions in other papers
dimethyl disulfide · Botrytis cinerea · Nicotiana tabacum (tobacco)Results agree
1 paper in the same direction as this paper
- positive
dimethyl disulfide · Bipolaris maydis · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
application · Botrytis cinerea · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
application · Bipolaris maydis · Zea mays (maize)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.