Serratia odorifera: analysis of volatile emission and biological impact of volatile compounds on Arabidopsis thaliana.
Summary of "Serratia odorifera: analysis of volatile emission and biological impact of volatile compounds on Arabidopsis thaliana."
Bacteria emit a wealth of volatiles. The combination of coupled gas chromatography/mass spectrometry (GC/MS) and proton-transfer-reaction mass spectrometry (PTR-MS) analyses provided a most comprehensive profile of volatiles of the rhizobacterium Serratia odorifera 4Rx13. An array of compounds, highly dominated by sodorifen (approximately 50%), a bicyclic oligomethyl octadiene, could be detected. Other volatiles included components of the biogeochemical sulfur cycle such as dimethyl disulfide (DMDS), dimethyl trisulfide and methanethiol, terpenoids, 2-phenylethanol, and other aromatic compounds. The composition of the bouquet of S. odorifera did not change significantly during the different growth intervals. At the beginning of the stationary phase, 60 mug of volatiles per 24 h and 60 easily detectable components were released. Ammonia was also released by S. odorifera, while ethylene, nitric oxide (NO) and hydrogen cyanide (HCN) could not be detected. Dual culture assays proved that 20 mumol DMDS and 2.5 mumol ammonia, individually applied, represent the IC(50) concentrations that cause negative effects on Arabidopsis thaliana.
Affiliation
Department of Biological Sciences, University of Rostock, Albert-Einstein-Str. 3, 18059, Rostock, Germany.
Journal Details
This article was published in the following journal.
Name: Applied microbiology and biotechnology
ISSN: 1432-0614
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20717666
- DOI: http://dx.doi.org/10.1007/s00253-010-2810-1
Medical and Biotech [MESH] Definitions
Oils, Volatile
Oils which evaporate readily. The volatile oils occur in aromatic plants, to which they give odor and other characteristics. Most volatile oils consist of a mixture of two or more TERPENES or of a mixture of an eleoptene (the more volatile constituent of a volatile oil) with a stearopten (the more solid constituent). The synonym essential oils refers to the essence of a plant, as its perfume or scent, and not to its indispensability.
Ginger
Deciduous plant rich in volatile oil (OILS, VOLATILE). It is used as a flavoring agent and has many other uses both internally and topically.
Arnica
A plant genus of the family ASTERACEAE. The dried flower heads of Arnica montana are used externally as a counterirritant and tincture for sprains and bruises, either as crude extract or in homeopathic dilution (HOMEOPATHY). Arnica contains volatile oils (OILS, VOLATILE), arnicin, arnisterol, FLAVONOIDS; TANNINS; and resin. The common name of Wolf's Bane is similar to the common name for ACONITUM.
Serratia Liquefaciens
A species of gram-negative bacteria in the genus SERRATIA found in plants and the DIGESTIVE TRACT of rodents. It is the most prevalent Serratia species in the natural environment.
Systems Biology
Comprehensive, methodical analysis of complex biological systems by monitoring responses to perturbations of biological processes. Large scale, computerized collection and analysis of the data are used to develop and test models of biological systems.
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