Calcification and Diagenesis of Bacterial Colonies
Calcification and Diagenesis of Bacterial Colonies
复制标题
菌落的钙化和成岩作用
作者：
N. Robin;S. Bernard;J. Miot;M. Blanc;S. Charbonnier;G. Petit
在化石记录中证明古代种间关联可能具有挑战性，特别是当细菌有机体很可能在成岩作用期间退化时。然而，记录古代种间关联可能为古环境条件和古群落提供有价值的见解。在这里，我们报告了分别在来自墨西哥（拉巴斯湾）的当代虾和来自罗纳河畔拉武尔特（法国）的 Lagerstatte 的 160 Ma 古老化石十足类（虾）上发现的当代和化石钙化细菌菌落的多尺度特征。我们结合使用电子显微镜和基于同步加速器的扫描透射 X 射线显微镜，记录了这些细菌菌落形成的当代和化石结构的精细尺度形态、无机成分和有机特征。除了讨论此类细菌菌落碳酸盐沉淀的机制之外，本研究还说明了成岩过程中发生的细菌残留物的降解。
Evidencing ancient interspecific associations in the fossil record may be challenging, particularly when bacterial organisms have most likely been degraded during diagenesis. Yet, documenting ancient interspecific associations may provide valuable insights into paleoenvironmental conditions and paleocommunities. Here, we report the multiscale characterization of contemporary and fossilized calcifying bacterial colonies found on contemporary shrimps from Mexico (La Paz Bay) and on 160-Ma old fossilized decapods (shrimps) from the Lagerstatte of La Voulte-sur-Rhone (France), respectively. We document the fine scale morphology, the inorganic composition and the organic signatures of both the contemporary and fossilized structures formed by these bacterial colonies using a combination of electron microscopies and synchrotron-based scanning transmission X-ray microscopy. In addition to discussing the mechanisms of carbonate precipitation by such bacterial colonies, the present study illustrates the degradation of bacterial remains occurring during diagenesis.
影响因子：
4.6
作者：
Ehrlich, H.;Rigby, J. Keith;Botting, J. P.;Tsurkan, M. V.;Werner, C.;Schwille, P.;Petrasek, Z.;Pisera, A.;Simon, P.;Sivkov, V. N.;Vyalikh, D. V.;Molodtsov, S. L.;Kurek, D.;Kammer, M.;Hunoldt, S.;Born, R.;Stawski, D.;Steinhof, A.;Bazhenov, V. V.;Geisler, T.
通讯作者：
Geisler, T.