Bone biodeterioration-The effect of marine and terrestrial depositional environments on early diagenesis and bone bacterial community

骨质生物劣化-海洋和陆地沉积环境对早期成岩作用和骨细菌群落的影响

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作者:Anne Marie Høier Eriksen, Tue Kjærgaard Nielsen, Henning Matthiesen, Christian Carøe, Lars Hestbjerg Hansen, David John Gregory, Gordon Turner-Walker, Matthew James Collins, M Thomas P Gilbert

Abstract

Bacteria play an important role in the degradation of bone material. However, much remains to be learnt about the structure of their communities in degrading bone, and how the depositional environment influences their diversity throughout the exposure period. We genetically profiled the bacterial community in an experimental series of pig bone fragments (femur and humeri) deposited at different well-defined environments in Denmark. The bacterial community in the bone fragments and surrounding depositional environment were studied over one year, and correlated with the bioerosion damage patterns observed microscopically in the bones. We observed that the bacterial communities within the bones were heavily influenced by the local microbial community, and that the general bone microbial diversity increases with time after exposure. We found the presence of several known collagenase producing bacterial groups, and also observed increases in the relative abundance of several of these in bones with tunneling. We anticipate that future analyses using shotgun metagenomics on this and similar datasets will be able to provide insights into mechanisms of microbiome driven bone degradation.

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