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Pseudozyma aphidis activates reactive oxygen species production, programmed cell death and morphological alterations in the necrotrophic fungus Botrytis cinerea
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Summary: Many types of yeast have been studied in the last few years as potential biocontrol agents against different phytopathogenic fungi. Their ability to control plant diseases is mainly through combined modes of action. Among them, antibiosis, competition for nutrients and niches, induction of systemic resistance in plants and mycoparasitism have been the most studied. In previous work, we have established that the epiphytic yeast Pseudozyma aphidis inhibits Botrytis cinerea through induced resistance and antibiosis. Here, we demonstrate that P. aphidis adheres to B. cinerea hyphae and competes with them for nutrients. We further show that the secreted antifungal compounds activate the production of reactive oxygen species and programmed cell death in B. cinerea mycelium. Finally, P. aphidis and its secreted compounds negatively affect B. cinerea hyphae, leading to morphological alterations, including hyphal curliness, vacuolization and branching, which presumably affects the colonization ability and infectivity of B. cinerea . This study demonstrates additional modes of action for P. aphidis and its antifungal compounds against the plant pathogen B. cinerea .
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Pseudozyma aphidis parasitises the powdery mildew pathogen Podosphaera xanthii and B. cinerea.
“the yeast-like Ustilaginomycete Pseudozyma aphidis parasitises the powdery mildew pathogen Podosphaera xanthii and B. cinerea (Calderon et al. 2019; Gafni et al. 2015).”
From Biocontrol yeasts: mechanisms and applications (2019) · cites this paper as Calderon et al. 2019
The Discussion describes P. aphidis parasitization of Podosphaera xanthii. For B. cinerea, however, it explicitly says the authors could not detect parasitism or penetration; they observed attachment and antagonistic effects instead. Thus the citation supports only the P. xanthii part of the claim. (LLM, conf=0.92)
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Biocontrol yeasts: mechanisms and applications
Freimoser, F. M., Rueda-Mejia, M. P., Tilocca, B., & Migheli, Q. (2019) · World Journal of Microbiology and Biotechnology · doi:10.1007/s11274-019-2728-4 · Cited by 462
Metadata
- Authors
- Calderón, C. E., Rotem, N., Harris, R., Vela‐Corcía, D., & Levy, M.
- Affiliations
- Hebrew University of Jerusalem (IL)
- Corresponding author
- Levy, Maggie
- Venue
- Molecular Plant Pathology
- Publisher
- Wiley
- Published
- 2019-02-18
- Volume
- 20
- Issue
- 4
- Pages
- 562-574
- ISSN
- 1364-3703 (ISSN-L)
- 1464-6722
- PMC
- PMC6637909
- OpenAlex
- W2904083402
- Cited by
- 29
- References
- 3
- Citations by year
- 2026: 1 · 2025: 7 · 2024: 4 · 2023: 7 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 1
- FWCI
- 1.55
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Molecular Plant Pathology (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Israel Science Foundation (1375/14)
- Ministry of Agriculture and Rural Development (256-0484-99)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Fungal Plant Pathogen Control
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Pathogens and Fungal Diseases
- Keywords
- Pseudozyma aphidis, Botrytis cinerea, epiphytic yeasts, biological control agents, antifungal agents, reactive oxygen species, programmed cell death, nutrient competition, mycoparasitism, induced resistance, antibiosis, plant pathogenic fungi
- MeSH terms
- Ustilaginales, Apoptosis, Reactive Oxygen Species, Botrytis, Mycelium
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