Abstract
Ten fungal isolates belonging to Rhizoctonia solani (4 isolates), Fusarium semitectum, F. solani, Macrophomina phaseolina, F. oxysporum f.sp. cucumerinum (2 isolates), and Sclerotium rolfsii were recovered from infected cucumber roots collected from various localities during the fall (2020) and spring (2021) growing seasons. Pathogenicity tests revealed that all isolates were capable of infecting cucumber plants, causing root rot and wilt diseases. Rhizoctonia solani isolate No. 3 was identified as the most destructive, resulting in the highest disease severity. Similarly, F. oxysporum f.sp. cucumerinum isolate No. 8 was the most virulent among the wilt pathogens. Significant variations were observed among the tested cucumber genotypes regarding their susceptibility to pre- and post-emergence damping-off. In vitro studies demonstrated that Trichoderma asperellum, T. harzianum, T. album, and T34 exhibited varying degrees of antagonistic activity against the pathogenic fungi. Additionally, different bacterial bioagents were evaluated under laboratory and greenhouse conditions; Pseudomonas fluorescens followed by Bacillus megaterium showed the highest efficacy in inhibiting the mycelial growth of R. solani and F. oxysporum f.sp. cucumerinum, whereas Bacillus subtilis exhibited moderate effects, and Paenibacillus polymyxa was the least effective. Furthermore, commercial biocides (Bio-Arc, Plant Guard, and Rizo-N) were evaluated during the fall (2022) and spring (2023) seasons under greenhouse conditions. Plant Guard was the most effective treatment at all tested concentrations in reducing disease severity caused by R. solani and F. oxysporum f.sp. cucumerinum. Moreover, Bio-Arc, followed by Rizo-N at the highest concentration, resulted in a significant reduction in the incidence of root rot and wilt diseases.
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Claims 8
Claim · model-written summary
All ten recovered fungal isolates infected cucumber and caused root rot or wilt.
- Taxon
- cucumber
Cucumis sativuse0 - Outcome
- root rot and wilt diseasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pathogenicity tests revealed that all isolates were capable of infecting cucumber plants, causing root rot and wilt diseases.”
Claim · model-written summary
Rhizoctonia solani isolate No. 3 caused the highest disease severity.
- Taxon
- cucumberCucumis sativust0
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie0pathogen - Outcome
- disease severitye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizoctonia solani isolate No. 3 was identified as the most destructive, resulting in the highest disease severity.”
t0“Biological control of root rot and wilt diseases of cucumber using certain bioagents and biocides under greenhouse conditions”
Claim · model-written summary
F. oxysporum f.sp. cucumerinum isolate No. 8 was most virulent among wilt pathogens.
- Taxon
- cucumberCucumis sativust0
- Interactor
- F. oxysporum f.sp. cucumerinum
Fusarium oxysporum f. sp. cucumerinume0pathogen - Outcome
- most virulente0
- Direction
- most virulente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F. oxysporum f.sp. cucumerinum isolate No. 8 was the most virulent among the wilt pathogens.”
t0“Biological control of root rot and wilt diseases of cucumber using certain bioagents and biocides under greenhouse conditions”
Claim · model-written summary
Cucumber genotypes differed significantly in susceptibility to damping-off.
- Taxon
- cucumberCucumis sativuse0
- Material
- cucumber genotypese0
- Outcome
- susceptibility to pre- and post-emergence damping-offe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant variations were observed among the tested cucumber genotypes regarding their susceptibility to pre- and post-emergence damping-off.”
Claim · model-written summary
The tested Trichoderma agents varied in antagonism against pathogenic fungi.
- Taxon
- cucumberCucumis sativust0
- Outcome
- antagonistic activity against the pathogenic fungie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trichoderma asperellum, T. harzianum, T. album, and T34 exhibited varying degrees of antagonistic activity against the pathogenic fungi.”
t0“Biological control of root rot and wilt diseases of cucumber using certain bioagents and biocides under greenhouse conditions”
Claim · model-written summary
Pseudomonas fluorescens most strongly inhibited pathogen mycelial growth.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Pseudomonas fluorescense0
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Second interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescense0biocontrol_agent - Outcome
- mycelial growth of R. solani and F. oxysporum f.sp. cucumerinume0
- Direction
- inhibitinge0
- Comparator
- Bacillus megateriume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Pseudomonas fluorescens followed by Bacillus megaterium showed the highest efficacy in inhibiting the mycelial growth of R. solani and F. oxysporum f.sp. cucumerinum”
t0“Biological control of root rot and wilt diseases of cucumber using certain bioagents and biocides under greenhouse conditions”
Claim · model-written summary
Plant Guard most effectively reduced root rot severity.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Plant Guarde0
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Outcome
- disease severity caused by R. solani and F. oxysporum f.sp. cucumerinume0
- Direction
- reducinge0
- Comparator
- all tested concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant Guard was the most effective treatment at all tested concentrations in reducing disease severity caused by R. solani and F. oxysporum f.sp. cucumerinum.”
t0“Biological control of root rot and wilt diseases of cucumber using certain bioagents and biocides under greenhouse conditions”
Claim · model-written summary
Bio-Arc significantly reduced root rot and wilt incidence.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Bio-Arce0
- Outcome
- incidence of root rot and wilt diseasese0
- Direction
- reductione0
- Comparator
- Rizo-Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bio-Arc, followed by Rizo-N at the highest concentration, resulted in a significant reduction in the incidence of root rot and wilt diseases.”
t0“Biological control of root rot and wilt diseases of cucumber using certain bioagents and biocides under greenhouse conditions”
The same questions in other papers
Pseudomonas fluorescens · Rhizoctonia solani · Cucumis sativus (cucumber)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.