Bioactivity of volatile organic compounds produced by Pseudomonas tolaasii
| Autor: | Annalisa Giorgio, Nicola Sante Iacobellis, Pietro Lo Cantore |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
dimethyl disulfide
Microbiology (medical) lcsh:QR1-502 Hydrogen cyanide Methanethiol Microbiology lcsh:Microbiology chemistry.chemical_compound 1-undecene Dimethyl disulfide Food science Mycelium Original Research Pseudomonas tolaasii Volatile Organic Compounds Mushroom biology Broccoli Lettuce biology.organism_classification mushrooms chemistry Pleurotus ostreatus methanethiol Agaricus bisporus |
| Zdroj: | Frontiers in Microbiology, Vol 6 (2015) Frontiers in Microbiology |
| ISSN: | 1664-302X |
| DOI: | 10.3389/fmicb.2015.01082 |
| Popis: | Pseudomonas tolaasii is the main bacterial pathogen of several mushroom species. In this paper we report that strains of P. tolaasii produce volatile substances inducing in vitro mycelia growth inhibition of Pleurotus ostreatus and P. eryngii, and Agaricus bisporus and P. ostreatus basidiome tissue blocks brown discoloration. P. tolaasii strains produced the volatile ammonia but not hydrogen cyanide. Among the volatiles detected by GC-MS, methanethiol, dimethyl disulfide, and 1-undecene were identified. The latter, when assayed individually as pure compounds, led to similar effects noticed when P. tolaasii volatiles natural blend was used on mushrooms mycelia and basidiome tissue blocks. Furthermore, the natural volatile mixture, resulted toxic toward lettuce and broccoli seedling growth. In contrast, pure volatiles showed different activity according to their nature and/or doses applied. Indeed, methanethiol resulted toxic at all the doses used, while dimethyl disulfide toxicity was assessed till a quantity of 1.25 µg, below which it caused, together with 1-undecene ( 10 µg), broccoli growth increase. |
| Databáze: | OpenAIRE |
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