Biological activity of volatiles produced by the strains of two Pseudomonas and two Serratia species

Sidorova, Daria E; Khmel, I. A.; Chernikova, Anastasya S; Chupriyanova, Tanya A; Plyuta, V. A.

doi:10.1007/s12223-023-01038-y

Cited by 5 publications

References 41 publications

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Evaluating the Biocontrol Potential of Pythium oligandrum and Serratia proteamaculans in Controlling Phytophthora plurivora in European beech (Fagus sylvatica)

Kelbessa,

Samuelsson,

Ghadamgahi

et al. 2024

Preprint

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In recent years, the plant pathogen Phytophthora plurivora has caused severe damage to beech forests in many European countries, including Sweden. In many affected areas, few protective measures are in place due to fears about potential negative impacts on the ecosystem or public health. The research presented in this article assesses the biocontrol potential of the oomycete Pythium oligandrum and the bacterium Serratia proteamaculans against P. plurivora, with experiments performed under both in vitro and greenhouse conditions, which could represent a step forward in developing a safe treatment for European beech forests. The in vitro results revealed that P. oligandrum and S. proteamaculans significantly inhibited pathogen growth and stimulated a shift in the hyphal growth pattern towards shorter, branched hyphae with many hyphal swellings and thickened cell walls. The experiments conducted in greenhouses showed that treating three-month-old beech seedlings with P. oligandrum and S. proteamaculans counteracts the P. plurivora pathogen and reduces disease symptoms on the aerial and underground parts of the plant. GC-MS analysis detected the volatile organic compounds alpha-pinene, 2,5-dimethyl-pyrazine, and 3-methyl-1-butanol from S. proteamaculans; these compounds have the potential to inhibit pathogen growth. The disease suppression demonstrated by these biocontrol agents could thus be related to the synergistic effect of competition for nutrients with the secretion of hydrolytic enzymes and VOCs; moreover, induced systemic resistance may be triggered under greenhouse conditions. In conclusion, using P. oligandrum and S. proteamaculans could represent an environmentally friendly strategy for effectively controlling the disease caused by P. plurivora in beech.

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Evaluating the Biocontrol Potential of Pythium oligandrum and Serratia proteamaculans in Controlling Phytophthora plurivora in European beech (Fagus sylvatica)

Kelbessa,

Samuelsson,

Ghadamgahi

et al. 2024

Preprint

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Specific Response of Bacterial Cells to the Action of β-Ionone

Sidorova,

Melkina,

Koksharova

et al. 2024

Microbiology

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Specific Response of Bacterial Cells to β-Ionone

Sidorova,

Melkina,

Koksharova

et al. 2024

Microbiology

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The biological activity and mechanisms of action of the unsaturated ketone β-ionone, a volatile compound of significantinterest for biotechnology, medicine, and agriculture, were studied. Using specific lux biosensors basedon Escherichia coli MG1655, we found that β-ionone causes oxidative stress in E. coli cells by inducing expression from the PkatG and Pdps promoters, but not from the PsoxS promoter. The effects of β-ionone on the heat shock induction (expression from the PibpA and PgrpE promoters) and on DNA damage (expression from the PcolD and PdinI promoters, SOS response) in E. coli cells were significantly weaker. β-Ionone did not cause oxidative stress in the cells of the gram-positive bacterium Bacillus subtilis.

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Biological activity of volatiles produced by the strains of two Pseudomonas and two Serratia species

Cited by 5 publications

References 41 publications

Evaluating the Biocontrol Potential of Pythium oligandrum and Serratia proteamaculans in Controlling Phytophthora plurivora in European beech (Fagus sylvatica)

Evaluating the Biocontrol Potential of Pythium oligandrum and Serratia proteamaculans in Controlling Phytophthora plurivora in European beech (Fagus sylvatica)

Specific Response of Bacterial Cells to the Action of β-Ionone

Specific Response of Bacterial Cells to β-Ionone

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