Abstract
Some Pseudomonas aurantiaca strains have been found to facilitate plant growth. A P. aurantiaca JD37 strain isolated from a suburb of Shanghai, China, was found to effectively colonize the rhizosphere soil and internal roots of maize (Zea mays L.) and promote maize growth. Agar diffusion assays and biocontrol effect experiments showed that strain JD37 had significant antagonistic activity against Bipolaris maydis, as well as a high biocontrol effect on southern maize leaf blight caused by B. maydis. PCR detection, associated with reverse-phase high-performance liquid chromatography assays, showed that strain JD37 might produce a number of important antibacterial substances, such as phenazine-1-carboxylic acid, pyrrolnitrin and 2,4-diacetylphloroglucinol. The crude bacterial extracts and the cell-free supernatant of strain JD37 were found to induce resistance in maize against B. maydis and reduce plant disease. Our results indicate the potential of some bacteria for producing bacterial compounds that serve as inducers of disease resistance, which is an attractive alternative to the application of chemical fertilizers, pesticides and supplement in agricultural practices.
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Claims 7
Claim · model-written summary
Strain JD37 had significant antagonistic activity against Bipolaris maydis in agar diffusion assays.
- Interactor
- Bipolaris maydis
Bipolaris maydise1pathogen - Second interactor
- strain JD37e1biocontrol_agent
- Outcome
- antagonistic activitye1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Agar diffusion assays and biocontrol effect experiments showed that strain JD37 had significant antagonistic activity against Bipolaris maydis, as well as a high biocontrol effect on southern maize leaf blight caused by B. maydis”
Claim · model-written summary
Strain JD37 had a high biocontrol effect on southern maize leaf blight caused by B. maydis.
- Interactor
- B. maydisBipolaris maydise1pathogen
- Second interactor
- strain JD37e1biocontrol_agent
- Outcome
- biocontrol effect on southern maize leaf blighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Agar diffusion assays and biocontrol effect experiments showed that strain JD37 had significant antagonistic activity against Bipolaris maydis, as well as a high biocontrol effect on southern maize leaf blight caused by B. maydis”
Claim · model-written summary
Crude bacterial extracts and the cell-free supernatant of strain JD37 induced resistance in maize against B. maydis.
- Treatment
- crude bacterial extracts and the cell-free supernatant of strain JD37e3
- Interactor
- B. maydisBipolaris maydise3pathogen
- Outcome
- resistance in maizee3
- Direction
- inducee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The crude bacterial extracts and the cell-free supernatant of strain JD37 were found to induce resistance in maize against B. maydis and reduce plant disease”
Claim · model-written summary
Crude bacterial extracts and the cell-free supernatant of strain JD37 reduced plant disease caused by B. maydis.
- Treatment
- crude bacterial extracts and the cell-free supernatant of strain JD37e3
- Interactor
- B. maydisBipolaris maydise3pathogen
- Outcome
- plant diseasee3
- Direction
- reducee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The crude bacterial extracts and the cell-free supernatant of strain JD37 were found to induce resistance in maize against B. maydis and reduce plant disease”
Claim · model-written summary
Strain JD37 colonized the rhizosphere soil and internal roots of maize.
- Organ / stage
- internal rootse0
- Interactor
- P. aurantiaca JD37Pseudomonas chlororaphis subsp. aurantiacae0symbiont
- Outcome
- colonizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A P. aurantiaca JD37 strain isolated from a suburb of Shanghai, China, was found to effectively colonize the rhizosphere soil and internal roots of maize (Zea mays L.) and promote maize growth”
Claim · model-written summary
Strain JD37 promoted maize growth.
- Treatment
- P. aurantiaca JD37e0
- Interactor
- P. aurantiaca JD37Pseudomonas chlororaphis subsp. aurantiacae0symbiont
- Outcome
- maize growthe0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A P. aurantiaca JD37 strain isolated from a suburb of Shanghai, China, was found to effectively colonize the rhizosphere soil and internal roots of maize (Zea mays L.) and promote maize growth”
Claim · model-written summary
Strain JD37 might produce antibacterial substances such as phenazine-1-carboxylic acid, pyrrolnitrin and 2,4-diacetylphloroglucinol.
- Outcome
- antibacterial substancese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A P. aurantiaca JD37 strain isolated from a suburb of Shanghai, China, was found to effectively colonize the rhizosphere soil and internal roots of maize (Zea mays L.) and promote maize growth”
e2“PCR detection, associated with reverse-phase high-performance liquid chromatography assays, showed that strain JD37 might produce a number of important antibacterial substances, such as phenazine-1-carboxylic acid, pyrrolnitrin and 2,4-diacetylphloroglucinol”
The same questions in other papers
pathogen product · Bipolaris maydis · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
4 papers more in this group
See all 8 papers →botanical · Bipolaris maydis · Zea mays (maize)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.