Abstract
Two lactic acid bacteria (LAB) designated J02 and J13 were recovered from fermented vegetables based on their ability to suppress soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish. J02 and J13 were identified as Lactobacillus pentosus and Leuconostoc fallax, respectively. The ability of J02 and J13 to suppress plant diseases is highly dependent on chitosan. LAB alone has no effect and chitosan alone has only a moderate effect on disease reduction. However, J02 or J13 broth cultures plus chitosan display a strong inhibitory effect against plant pathogens and significantly reduces disease severity. LAB strains after being cultured in fish surimi (agricultural waste) and glycerol or sucrose-containing medium and mixed with chitosan, reduce three cruciferous vegetable diseases, including cabbage black spot caused by Alternaria brassicicola, black rot caused by Xanthomonas campestris pv. campestris, and soft rot caused by Pcc. Experimental trials reveal that multiple applications are more effective than a single application. In-vitro assays also reveal the J02/chitosan mixture is antagonistic against Colletotrichum higginsianum, Sclerotium rolfsii, and Fusarium oxysporum f. sp. rapae, indicating a broad-spectrum activity of LAB/chitosan. Overall, our results indicate that a synergistic combination of LAB and chitosan offers a promising approach to biocontrol.
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Claims 8
Claim · model-written summary
J02 or J13 broth cultures plus chitosan significantly reduced radish soft rot disease severity.
- Taxon
- radish
Raphanus sativuse0 - Treatment
- J02 or J13 broth cultures plus chitosane2
- Interactor
- Pectobacterium carotovorum subsp. carotovorum
Pectobacterium carotovorum subsp. carotovorume0pathogen - Second interactor
- J02 or J13e2biocontrol_agent
- Outcome
- disease severitye2
- Direction
- significantly reducese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish”
e2“J02 or J13 broth cultures plus chitosan display a strong inhibitory effect against plant pathogens and significantly reduces disease severity”
Claim · model-written summary
LAB alone had no effect on radish disease reduction.
- Taxon
- radishRaphanus sativuse0
- Treatment
- LAB alonee1
- Outcome
- disease reductione1
- Direction
- no effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish”
e1“LAB alone has no effect and chitosan alone has only a moderate effect on disease reduction”
Claim · model-written summary
Chitosan alone had only a moderate effect on radish disease reduction.
- Taxon
- radishRaphanus sativuse0
- Treatment
- chitosan alonee1
- Outcome
- disease reductione1
- Direction
- moderate effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish”
e1“LAB alone has no effect and chitosan alone has only a moderate effect on disease reduction”
Claim · model-written summary
The ability of J02 and J13 to suppress plant diseases was highly dependent on chitosan.
- Taxon
- radishRaphanus sativuse0
- Treatment
- chitosane4
- Outcome
- to suppress plant diseasese4
- Direction
- highly dependente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish”
e4“The ability of J02 and J13 to suppress plant diseases is highly dependent on chitosan”
Claim · model-written summary
Multiple applications were more effective than a single application.
- Taxon
- radishRaphanus sativuse0
- Treatment
- multiple applicationse3
- Outcome
- more effectivee3
- Direction
- more effectivee3
- Comparator
- a single applicatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish”
e3“Experimental trials reveal that multiple applications are more effective than a single application”
Claim · model-written summary
LAB strains with chitosan reduced three cruciferous vegetable diseases: cabbage black spot, black rot and soft rot.
- Taxon
- cruciferous vegetablee5
- Treatment
- LAB strains after being cultured in fish surimi (agricultural waste) and glycerol or sucrose-containing medium and mixed with chitosane5
- Interactor
- Alternaria brassicicola
Alternaria brassicicolae5pathogen - Second interactor
- Xanthomonas campestris pv. campestris
Xanthomonas campestris pv. campestrise5pathogen - Outcome
- three cruciferous vegetable diseasese5
- Direction
- reducee5
- Qualifier
- soft rot caused by Pcce5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“LAB strains after being cultured in fish surimi (agricultural waste) and glycerol or sucrose-containing medium and mixed with chitosan, reduce three cruciferous vegetable diseases, including cabbage black spot caused by Alternaria brassicicola, black rot caused by Xanthomonas campestris pv. campestris, and soft rot caused by Pcc”
Claim · model-written summary
The J02/chitosan mixture was antagonistic in vitro against Colletotrichum higginsianum and Sclerotium rolfsii, and also against Fusarium oxysporum f. sp. rapae.
- Taxon
- radishRaphanus sativuse0
- Treatment
- J02/chitosan mixturee6
- Interactor
- Colletotrichum higginsianumColletotrichum higginsianume6pathogen
- Second interactor
- Sclerotium rolfsii
Agroathelia rolfsiie6pathogen - Outcome
- antagonistice6
- Direction
- antagonistice6
- Qualifier
- Fusarium oxysporum f. sp. rapaee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish”
e6“In-vitro assays also reveal the J02/chitosan mixture is antagonistic against Colletotrichum higginsianum, Sclerotium rolfsii, and Fusarium oxysporum f. sp. rapae”
Claim · model-written summary
J02 or J13 broth cultures plus chitosan showed a strong inhibitory effect against plant pathogens.
- Taxon
- radishRaphanus sativuse0
- Treatment
- J02 or J13 broth cultures plus chitosane2
- Outcome
- inhibitory effect against plant pathogense2
- Direction
- stronge2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soft rot disease caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) on radish”
e2“J02 or J13 broth cultures plus chitosan display a strong inhibitory effect against plant pathogens and significantly reduces disease severity”
The same questions in other papers
inoculation · control · Raphanus sativus (radish)Positive and negative results
1 in the opposite direction
- positive
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.