Fig. 7: Conceptual model of dark zone formation integrating taxonomic and functional metagenomic information provided by the present work. | npj Biofilms and Microbiomes

Fig. 7: Conceptual model of dark zone formation integrating taxonomic and functional metagenomic information provided by the present work.

From: Microbial diversity and secondary metabolism potential in relation to dark alterations in Paleolithic Lascaux Cave

Fig. 7

The black arrows represent metabolic pathways identified in this study. The dotted arrows represent the metabolic pathways not identified in this study but expected to occur based on literature information. The blue arrows indicate the link between various benzene-like compounds that can derive from the degradation of BAC, which can then be transformed into carotenoids or L-dopachrome in dark zones. BAC: benzalkonium chloride; BDMA: benzyldimethylamine.

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