Abstract
Abstract The most common leguminous plants’ diseases are caused by soil-borne pathogens leading to important economic losses worldwide. Strains L1 and L8, belonging to Aureobasidium pullulans species, were tested in vitro and in vivo as biocontrol agents (BCAs) against Rhizoctonia solani ( Rs1 ) (AG-4) and as plant growth promoters (PGPs). The non-volatile metabolites produced by L1 and L8 strains inhibited the pathogen mycelial growth by 87.9% on average, with no significant differences between the two strains. The lower pathogen diametric growth inhibition was displayed by both yeasts’ volatile metabolites (VOCs) that significantly reduced the colony growth of R. solani , and similarly to the control, with an average of 10.5%. By in vivo assay, L1 and L8 strains showed the ability to control the pathogen virulence probably through the biofilm formation around the bean and soybean plant roots, as confirmed by scanning electron microscope (SEM) analysis. The spectroscopic analysis highlighted the composition of non-volatile compounds: complex carbohydrates (pullulan), degrading enzymes, siderophores and antifungals (aureobasidins). Moreover, the ability of L1 and L8 strains to stimulate the bean and soybean plant roots, stems, and leaves growth was investigated, showing that these yeasts could have an application not only as BCAs but also as plant growth biostimulator.
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Claims 7
Claim · model-written summary
Non-volatile metabolites of strains L1 and L8 inhibited R. solani mycelial growth by 87.9% on average, with no significant difference between the two strains.
- Taxon
- Rhizoctonia solani
Rhizoctonia solanie1 - Treatment
- non-volatile metabolites produced by L1 and L8 strainse0
- Interactor
- Rhizoctonia solaniRhizoctonia solanie1pathogen
- Second interactor
- L1 and L8 strainse0biocontrol_agent
- Outcome
- pathogen mycelial growthe0
- Direction
- inhibitede0
- Value
- 87.9% on averagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The non-volatile metabolites produced by L1 and L8 strains inhibited the pathogen mycelial growth by 87.9% on average”
e1“Rhizoctonia solani”
Claim · model-written summary
Volatile metabolites of both yeasts significantly reduced R. solani colony growth, but inhibition was lower, similar to the control, averaging 10.5%.
- Taxon
- Rhizoctonia solaniRhizoctonia solanie1
- Treatment
- volatile metabolites (VOCs)e0
- Interactor
- Rhizoctonia solaniRhizoctonia solanie1pathogen
- Outcome
- colony growth of R. solanie0
- Direction
- reducede0
- Value
- 10.5%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“volatile metabolites (VOCs) that significantly reduced the colony growth of R. solani , and similarly to the control, with an average of 10.5%”
e1“Rhizoctonia solani”
Claim · model-written summary
In vivo, strains L1 and L8 controlled the pathogen virulence on bean plants, probably through biofilm formation around the roots confirmed by SEM.
- Taxon
- beane0
- Interactor
- Rhizoctonia solaniRhizoctonia solanie1pathogen
- Second interactor
- L1 and L8 strainse0biocontrol_agent
- Outcome
- control the pathogen virulencee0
- Qualifier
- biofilm formation around the bean and soybean plant rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“L1 and L8 strains showed the ability to control the pathogen virulence probably through the biofilm formation around the bean and soybean plant roots, as confirmed by scanning electron microscope (SEM) analysis”
e1“Rhizoctonia solani”
Claim · model-written summary
In vivo, strains L1 and L8 controlled the pathogen virulence on soybean plants, probably through biofilm formation around the roots confirmed by SEM.
- Taxon
- soybean
Glycine maxe0 - Interactor
- Rhizoctonia solaniRhizoctonia solanie1pathogen
- Second interactor
- L1 and L8 strainse0biocontrol_agent
- Outcome
- control the pathogen virulencee0
- Qualifier
- biofilm formation around the bean and soybean plant rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“L1 and L8 strains showed the ability to control the pathogen virulence probably through the biofilm formation around the bean and soybean plant roots, as confirmed by scanning electron microscope (SEM) analysis”
e1“Rhizoctonia solani”
Claim · model-written summary
Spectroscopic analysis highlighted the composition of non-volatile compounds: complex carbohydrates (pullulan), degrading enzymes, siderophores and antifungals (aureobasidins).
- Taxon
- Aureobasidium pullulans
Aureobasidium pullulanst0 - Outcome
- composition of non-volatile compounds: complex carbohydrates (pullulan), degrading enzymes, siderophores and antifungals (aureobasidins)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The spectroscopic analysis highlighted the composition of non-volatile compounds: complex carbohydrates (pullulan), degrading enzymes, siderophores and antifungals (aureobasidins)”
t0“Aureobasidium pullulans Strains”
Claim · model-written summary
Strains L1 and L8 stimulated the growth of bean roots, stems and leaves, suggesting use as a plant growth biostimulator.
- Taxon
- beane0
- Treatment
- L1 and L8 strainse0
- Interactor
- L1 and L8 strainse0other
- Outcome
- roots, stems, and leaves growthe0
- Direction
- stimulatee0
Not reportedComparator
Verbatim
e0“the ability of L1 and L8 strains to stimulate the bean and soybean plant roots, stems, and leaves growth was investigated, showing that these yeasts could have an application not only as BCAs but also as plant growth biostimulator”
Claim · model-written summary
Strains L1 and L8 stimulated the growth of soybean roots, stems and leaves, suggesting use as a plant growth biostimulator.
- Taxon
- soybeanGlycine maxe0
- Treatment
- L1 and L8 strainse0
- Interactor
- L1 and L8 strainse0other
- Outcome
- roots, stems, and leaves growthe0
- Direction
- stimulatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ability of L1 and L8 strains to stimulate the bean and soybean plant roots, stems, and leaves growth was investigated, showing that these yeasts could have an application not only as BCAs but also as plant growth biostimulator”