Abstract
Actinomyces strain A01 was isolated from soil of a vegetable field in the suburb of Beijing, China. According to the morphological, cultural, physiological and biochemical characteristics, and 16S rDNA sequence analysis, strain A01 was identified as Streptomyces lydicus. In the antimicrobial spectrum test strain A01 presented a stable and strong inhibitory activity against several plant pathogenic fungi such as Fusarium oxysporum, Botrytis cinerea, Monilinia laxa, etc. However, no antibacterial activity was found. In pot experiments in greenhouse, the development of tomato gray mold was markedly suppressed by treatment with the fermentation broth of the strain A01, and the control efficacy was higher than those of Pyrimethanil and Polyoxin. A main antifungal compound (purity 99.503%) was obtained from the fermentation broth of strain A01 using column chromatography and HPLC. The chemical structural analysis with U V, IR, MS, and NMR confirmed that the compound produced by the strain A01 is natamycin, a polyene antibiotic produced by S. chattanovgensis, S. natalensis, and S. gilvosporeus, widely used as a natural biological preservative for food according to previous reports. The present study revealed a new producing strain of natamycin and its potential application as a biological control agent for fungal plant diseases.
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Claims 5
Claim · model-written summary
Strain A01 was identified as Streptomyces lydicus.
- Taxon
- tomato
Solanum lycopersicume1 - Interactor
- Streptomyces lydicusStreptomyces lydicuse0biocontrol_agent
- Outcome
- identified as Streptomyces lydicuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strain A01 was identified as Streptomyces lydicus”
e1“tomato gray mold”
Claim · model-written summary
Strain A01 inhibited several plant pathogenic fungi.
- Taxon
- tomatoSolanum lycopersicume1
- Interactor
- Fusarium oxysporum
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=60)
Fusarium oxysporume0pathogen - Second interactor
- strain A01e0biocontrol_agent
- Outcome
- inhibitory activitye0
- Direction
- inhibitorye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=500)
Verbatim
e0“strain A01 presented a stable and strong inhibitory activity against several plant pathogenic fungi such as Fusarium oxysporum, Botrytis cinerea, Monilinia laxa”
e1“tomato gray mold”
Claim · model-written summary
Strain A01 showed no antibacterial activity.
- Taxon
- tomatoSolanum lycopersicume1
- Outcome
- antibacterial activitye0
- Direction
- noe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no antibacterial activity was found”
e1“tomato gray mold”
Claim · model-written summary
Strain A01 broth suppressed tomato gray mold more than Pyrimethanil and Polyoxin.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- treatment with the fermentation broth of the strain A01e0
- Second interactor
- strain A01e0biocontrol_agent
- Outcome
- tomato gray molde0
- Direction
- suppressede0
- Comparator
- Pyrimethanil and Polyoxine0
Not reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“development of tomato gray mold was markedly suppressed by treatment with the fermentation broth of the strain A01, and the control efficacy was higher than those of Pyrimethanil and Polyoxin”
Claim · model-written summary
The main antifungal compound from strain A01 was identified as natamycin.
- Taxon
- tomatoSolanum lycopersicume1
- Interactor
- strain A01e0biocontrol_agent
- Outcome
- natamycine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compound produced by the strain A01 is natamycin”
e1“tomato gray mold”
The same questions in other papers
processing · organism · Solanum lycopersicum (tomato)Positive and negative results
13 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
11 papers more in this group
See all 15 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.