and described in this review. Moreover, exo-lithobiontic microbes have been
identified and attributed to the precipitation of minerals (Dupraz and Visscher
2005). Recent studies allowed first identifications of DNA fragments, isolated
from within the mineralic part of the polymetallic nodules (Wang et al. 2009d),
indicating the existence of endolithobiontic microbes. Focusing on bacteria,
strategies had already been developed to utilize microorganisms for biosynthesis
and bioleaching of manganese marine deposits (Ehrlich 2001). As a conclusion, it
can be expected that in the nearest future, microorganisms will also be isolated that
may be used for the accumulation and concentration of trace elements from the
marine environment.
Acknowledgment We thank the Research group “Surface Chemistry” of Dr. I. Lieberwirth and
Dr M. Kappl (Max Planck Institute for Polymer Research; Mainz) for important contributions in
electron microscopic and spectroscopic analyses. This work was supported by grants from the
Bundesministerium f€ ur Bildung und Forschung Germany [project: Center of Excellence
BIOTECmarin], and from the International Science & Technology Cooperation Program of
China (Grant No. 2008DFA00980).
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