g. thiosulfate (Sox complex) or sulfide (sqr

fccAB), (2) adapt to temporal variation in the concentrations of sulfide, e.g. low sulfide (sqr) and high sulfide (fccAB), and (3) reverse the action of their enzymes, e.g. dsrB involves both the oxidative and the reductive mode of the dissimilatory sulfur metabolism. click here Sequences obtained in this study provide the molecular framework to detect the populations carrying relevant functions in future monitoring studies ( Additional file 1, Figures S7 and S 8). Recently safe and cost-effective approaches to inhibit or prevent corrosion have included learn more influencing the microbial population without the application of biocides by (1) supporting the establishment of competitive biofilms and (2) removing or adding electron acceptors such as nitrate [5, 70]. The addition of nitrate can stimulate the growth of competing bacterial populations (e.g. nitrate-reducing bacteria), which can effectively displace the SRB [71]. The success of these approaches must include a detailed analysis of the established p38 MAPK pathway bacterial populations and functional capabilities of the microbial community in that

particular system. In fact, our data provide evidence of the effect of habitat selective factors on microorganisms and consequently their functional capabilities. For example, the diversity of the denitrification

genes nirK and nirS increased in habitats with relatively moderate and low levels of nitrate/nitrite, respectively [72]. Other corrosion control approaches SB-3CT include commercially available coating techniques, for which limited data is available on their performance. The data from this study identified the potential bacterial groups and specific gene sequences that remediation approaches need to target to prevent microbial colonization of key concrete corrosion-associated microbiota. Conclusions In the present work, we analyzed wastewater concrete metagenomic and phylogenetic sequences in an effort to better understand the composition and function potential of concrete biofilms. The analyses unveiled novel insights on the molecular ecology and genetic function potential of concrete biofilms. These communities are highly diverse and harbor complex genetic networks, mostly composed of bacteria, although archaeal and viral (e.g., phages) sequences were identified as well. In particular, we provided insights on the bacterial populations associated with the sulfur and nitrogen cycle, which may be directly or indirectly implicated in concrete corrosion. By identifying gene sequences associated with them, their potential role in the corrosion of concrete can be further studied using multiple genetic assays.