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Function of bacterial community dynamics in the formation of cadaveric semiochemicals during in situ carcass decomposition

Titelangaben

Pascual, Javier ; von Hoermann, Christian ; Rottler-Hoermann, Ann-Marie ; Nevo, Omer ; Geppert, Alicia ; Sikorski, Johannes ; Huber, Katharina J. ; Steiger, Sandra ; Ayasse, Manfred ; Overmann, Jörg:
Function of bacterial community dynamics in the formation of cadaveric semiochemicals during in situ carcass decomposition.
In: Environmental Microbiology. Bd. 19 (2017) Heft 8 . - S. 3310-3322.
ISSN 1462-2920
DOI: https://doi.org/10.1111/1462-2920.13828

Abstract

The decomposition of dead mammalian tissue involves a complex temporal succession of epinecrotic bacteria. Microbial activity may release different cadaveric volatile organic compounds which in turn attract other key players of carcass decomposition such as scavenger insects. To elucidate the dynamics and potential functions of epinecrotic bacteria on carcasses, we monitored bacterial communities developing on still‐born piglets incubated in different forest ecosystems by combining high‐throughput Illumina 16S rRNA sequencing with gas chromatography‐mass spectrometry of volatiles. Our results show that the community structure of epinecrotic bacteria and the types of cadaveric volatile compounds released over the time course of decomposition are driven by deterministic rather than stochastic processes. Individual cadaveric volatile organic compounds were correlated with specific taxa during the first stages of decomposition which are dominated by bacteria. Through best‐fitting multiple linear regression models, the synthesis of acetic acid, indole and phenol could be linked to the activity of Enterobacteriaceae, Tissierellaceae and Xanthomonadaceae, respectively. These conclusions are also commensurate with the metabolism described for the dominant taxa identified for these families. The predictable nature of in situ synthesis of cadaveric volatile organic compounds by epinecrotic bacteria provides a new basis for future chemical ecology and forensic studies.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER147392
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Tierökologie II - Evolutionäre Tierökologie > Lehrstuhl Tierökologie II - Evolutionäre Tierökologie - Univ.-Prof. Dr. Sandra Steiger
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Tierökologie II - Evolutionäre Tierökologie
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
Eingestellt am: 08 Apr 2019 12:54
Letzte Änderung: 08 Apr 2019 12:54
URI: https://eref.uni-bayreuth.de/id/eprint/48321