Claim · model-written summary
GC-MS of the cell-free extract of W. anomalus KKUY0051 revealed toxic compounds such as nitrophenol derivatives.
Verbatim
e0“Gas chromatography–mass spectrometry analysis of the cell-free extract of W. anomalus KKUY0051 revealed the presence of toxic compounds such as the nitrophenol derivatives”
Title
Mohamed Hashem; Saad A. Alamri; Abd El-Latif Hesham; et al. Biocontrol Science and Technology 2014. doi:10.1080/09583157.2014.926857
Other claims from this paper (13)
- Observation In an in vitro test yeast strains KKUY0017 and KKUY0051 were selected as the most effective antagonists against Penicillium expansum.
- Observation Sequencing of 26S rDNA confirmed strain KKUY0017 to be Cryptococcus albidus.
- Observation Sequencing of 26S rDNA confirmed strain KKUY0051 to be Wickerhamomyces anomalus.
- Intervention effect The two yeast strains protected apple fruits from blue mould disease over a wide temperature range of 5-30 C.
- Intervention effect Of the two yeast strains, W. anomalus KKUY0051 was more effective in protecting apple fruits from blue mould.
- Intervention effect At 25 C W. anomalus KKUY0051 reduced blue mould disease severity on apple by 56.49%.
- Intervention effect At 25 C W. anomalus KKUY0051 reduced blue mould disease incidence on apple by 57.78%.
- Intervention effect Either yeast applied at 108 or 109 cells/mL gave the maximum reduction in blue mould disease severity and incidence.
- Intervention effect Under cold storage at 5 C both yeast strains protected apple fruits free from infection for up to 24 days.
- Mechanism Electron micrographs showed C. albidus KKUY0017 cells attached closely to the fungal hyphae, leading to degradation of the hyphae.
- Mechanism W. anomalus killed the fungal hyphae without direct attachment to them.
- Mechanism The authors conclude that the main mode of action of the yeast is by killer toxins.
- Recommendation The authors recommend applying these yeasts under cold storage to keep apple fruits free from blue mould infection for a long time.