Abstract
Rice is one of the most important staple crops worldwide. However, the bacterial blight of rice caused by Xanthomonas oryzae pv. oryzae (Xoo) poses a major threat to the production of rice. In this study, we isolated and identified the strain Pseudomonas aeruginosa SF416, which exhibited significant antagonistic activity against Xoo, from a soil sample collected in a winter wheat field in Shannanzhalang County, Tibet, China. The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively, while they exhibited a slightly lower therapeutic efficiency of 31.64% and 25.09%. The genomic analysis showed that P. aeruginosa SF416 contains genes involved in cell motility, colonization, cold and hot shock proteins, antibiotic resistance, and plant growth promotion. SF416 also harbors two sets of phenazine-1-carboxylic acid (PCA) synthesis gene clusters, phz1 (phzA1-G1) and phz2 (phzA2-G2), and other phenozine product-synthesis--related genes phzS, phzM, and phzH, as well as genes in the SF416 genome that share high similarity with the ones in the genomes of P. aeruginosa M18, suggesting that the two sets of PCA synthesis gene clusters are responsible for the antagonistic effect of SF416 against Xoo. A comparative antiSMASH analysis revealed that P. aeruginosa SF416 contains 17 gene clusters related to secondary metabolite synthesis, 7 of which, encoding for pyochelin, azetidomonamide A/B, L-2-amino-4-methoxy-trans-3-butenoic acid, hydrogen cyanide, pyocyanine, pseudopaline, and bicyclomycin, are conserved in strains of P. aeruginosa. Moreover, SF416 can produce protease and siderophores and display a broad-spectrum antagonistic activity against various major plant pathogenic bacteria and fungi. The results suggest that P. aeruginosa SF416 could be a potential candidate agent for the bacterial blight of rice.
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Claims 5
Claim · model-written summary
SF416 bacterial solution prevented rice bacterial blight with 45.1% efficacy.
- Taxon
- rice
Oryza sativae0 - Treatment
- bacterial solution (BS)e0
- Interactor
- Xanthomonas oryzae pv. oryzae
Xanthomonas oryzae pv. oryzaet0pathogen - Second interactor
- Pseudomonas aeruginosa SF416
Pseudomonas aeruginosat0biocontrol_agent - Outcome
- bacterial blight of ricee0
- Direction
- preventione0
- Value
- 45.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively”
e1“The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively”
t0“Pseudomonas aeruginosa SF416, a Potential Broad-Spectrum Biocontrol Agent Against Xanthomonas oryzae pv. oryzae”
Claim · model-written summary
SF416 cell free supernatant prevented rice bacterial blight with 34.18% efficacy.
- Taxon
- riceOryza sativae0
- Treatment
- cell-free supernatant (CFS)e0
- Interactor
- Xanthomonas oryzae pv. oryzaeXanthomonas oryzae pv. oryzaet0pathogen
- Second interactor
- Pseudomonas aeruginosa SF416Pseudomonas aeruginosat0biocontrol_agent
- Outcome
- bacterial blight of ricee0
- Direction
- preventione0
- Value
- 34.18%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively”
e1“The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively”
t0“Pseudomonas aeruginosa SF416, a Potential Broad-Spectrum Biocontrol Agent Against Xanthomonas oryzae pv. oryzae”
Claim · model-written summary
SF416 produced protease and siderophores.
- Taxon
- riceOryza sativae1
- Interactor
- Pseudomonas aeruginosa SF416Pseudomonas aeruginosat0biocontrol_agent
- Outcome
- protease and siderophorese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SF416 can produce protease and siderophores”
e1“The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively”
t0“Pseudomonas aeruginosa SF416, a Potential Broad-Spectrum Biocontrol Agent Against Xanthomonas oryzae pv. oryzae”
Claim · model-written summary
SF416 showed broad antagonism against plant pathogenic bacteria and fungi.
- Taxon
- riceOryza sativae1
- Interactor
- Pseudomonas aeruginosa SF416Pseudomonas aeruginosat0biocontrol_agent
- Outcome
- broad-spectrum antagonistic activity against various major plant pathogenic bacteria and fungie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“display a broad-spectrum antagonistic activity against various major plant pathogenic bacteria and fungi”
e1“The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively”
t0“Pseudomonas aeruginosa SF416, a Potential Broad-Spectrum Biocontrol Agent Against Xanthomonas oryzae pv. oryzae”
Claim · model-written summary
The authors suggest SF416 as a candidate agent against rice bacterial blight.
- Taxon
- riceOryza sativae0
- Interactor
- P. aeruginosa SF416Pseudomonas aeruginosae0biocontrol_agent
- Outcome
- potential candidate agent for the bacterial blight of ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. aeruginosa SF416 could be a potential candidate agent for the bacterial blight of rice”
e1“The bacterial solution (BS) and cell-free supernatant (CFS) of SF416 had significant prevention effects for the bacterial blight of rice, with an efficacy of 45.1% and 34.18%, respectively”
The same questions in other papers
pathogen product · Xanthomonas oryzae pv. oryzae · Oryza sativa (rice)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
2 papers more in this group
See all 6 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.