Abstract
Abstract Gram-positive bacterium BRF-1 isolated from the rhizosphere of root-rotten diseased soybean plants shows strong antifungal activity on plates. In the present study, the ability of BRF-1 to control brown stem rot disease and to promote plant growth was examined using soybean plants grown in pots. Brown stem rot is a severe soil-borne disease of soybean that is caused by the pathogenic fungus Phialophora gregata. Eighteen-day-old soybean seedlings were grown in a mixture of soil (40 mL) and BRF-1 suspension (10 mL) and were dipped in a suspension of P. gregata (106 c.f.u. mL−1), and the severity of the disease was judged 62 days after the fungal inoculation. Inoculation with BRF-1 at 107 and 108 c.f.u. mL−1 significantly lowered the severity of the disease. Soybean seeds incubated in 100 mL of the BRF-1 suspension (2 × 106 c.f.u. mL−1) were sown in pots filled with sand, and plants were collected 7 days after emergence. The dry weight increase in shoots and roots and mineral absorption were significantly stimulated by the inoculation. These results suggest that BRF-1 might be an effective biocontrol agent to manage brown stem rot disease in soybean. The 16S rDNA sequence of BRF-1 showed high homology with sequences of Paenibacillus polymyxa strains (e.g. 99.7% identity with P. polymyxa strain WY110).
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Claims 6
Claim · model-written summary
BRF-1 isolated from diseased soybean rhizospheres showed strong antifungal activity on plates.
- Taxon
- soybean
Glycine maxe0 - Interactor
- BRF-1e0biocontrol_agent
- Outcome
- antifungal activitye0
- Setting
- on platese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gram-positive bacterium BRF-1 isolated from the rhizosphere of root-rotten diseased soybean plants shows strong antifungal activity on plates”
Claim · model-written summary
BRF-1 inoculation at two concentrations significantly lowered brown stem rot severity in soybean.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Inoculation with BRF-1e0
- Interactor
- Phialophora gregataCadophora gregatae1pathogen
- Second interactor
- BRF-1e0biocontrol_agent
- Outcome
- severity of the diseasee0
- Direction
- lowerede0
- Value
- 107 and 108 c.f.u. mL−1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation with BRF-1 at 107 and 108 c.f.u. mL−1 significantly lowered the severity of the disease”
e1“Brown stem rot is a severe soil-borne disease of soybean that is caused by the pathogenic fungus Phialophora gregata.”
Claim · model-written summary
BRF-1 inoculation significantly stimulated shoot and root dry weight gain in soybean seedlings.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- inoculatione0
- Interactor
- BRF-1e1biocontrol_agent
- Outcome
- dry weight increase in shoots and rootse0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry weight increase in shoots and roots and mineral absorption were significantly stimulated by the inoculation”
e1“Soybean seeds incubated in 100 mL of the BRF-1 suspension (2 × 106 c.f.u. mL−1) were sown in pots filled with sand”
Claim · model-written summary
BRF-1 inoculation significantly stimulated mineral absorption in soybean seedlings.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- inoculatione0
- Interactor
- BRF-1e1biocontrol_agent
- Outcome
- mineral absorptione0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry weight increase in shoots and roots and mineral absorption were significantly stimulated by the inoculation”
e1“Soybean seeds incubated in 100 mL of the BRF-1 suspension (2 × 106 c.f.u. mL−1) were sown in pots filled with sand”
Claim · model-written summary
The authors suggest BRF-1 as a control agent for soybean brown stem rot.
- Taxon
- soybeanGlycine maxe0
- Interactor
- BRF-1e0biocontrol_agent
- Outcome
- BRF-1 might be an effective biocontrol agent to manage brown stem rot diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BRF-1 might be an effective biocontrol agent to manage brown stem rot disease in soybean”
Claim · model-written summary
The BRF-1 16S sequence had high homology with Paenibacillus polymyxa sequences, including 99.7% identity to WY110.
- Taxon
- soybeanGlycine maxe1
- Interactor
- BRF-1e0biocontrol_agent
- Outcome
- 16S rDNA sequence of BRF-1e0
- Direction
- high homologye0
- Value
- 99.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 16S rDNA sequence of BRF-1 showed high homology with sequences of Paenibacillus polymyxa strains (e.g. 99.7% identity with P. polymyxa strain WY110)”
e1“diseased soybean plants”
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See all 358 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.