@article{fdi:010077956, title = {{M}eta-omics provides insights into the impact of hydrocarbon contamination on microbial mat functioning}, author = {{A}ube, {J}. and {S}enin, {P}. and {B}onin, {P}. and {P}ringault, {O}livier and {J}eziorski, {C}. and {B}ouchez, {O}. and {K}lopp, {C}. and {G}uyoneaud, {R}. and {G}oni-{U}rriza, {M}.}, editor = {}, language = {{ENG}}, abstract = {{P}hotosynthetic microbial mats are stable, self-supported communities. {D}ue to their coastal localization, these mats are frequently exposed to hydrocarbon contamination and are able to grow on it. {T}o decipher how this contamination disturbs the functioning of microbial mats, we compared two mats: a contaminated mat exposed to chronic petroleum contamination and a reference mat. {T}he taxonomic and metabolic structures of the mats in spring and fall were determined using metagenomic and metatranscriptomic approaches. {E}xtremely high contamination disturbed the seasonal variations of the mat. {ABC} transporters, two-component systems, and type {IV} secretion system-related genes were overabundant in the contaminated mats. {X}enobiotic degradation metabolism was minor in the metagenomes of both mats, and only the expression of genes involved in polycyclic aromatic hydrocarbon degradation was higher in the contaminated mat. {I}nterestingly, the expression rates of genes involved in hydrocarbon activation decreased during the 1-year study period, concomitant with the decrease in easily degradable hydrocarbons, suggesting a transient effect of hydrocarbon contamination. {A}lteromonadales and {O}ceanospirillales hydrocarbonoclastic bacteria appeared to be key in hydrocarbon remediation in the contaminated mat. {O}verall, the contaminated microbial mat was able to cope with hydrocarbon contamination and displayed an adaptive functioning that modified seasonal behaviour.}, keywords = {{M}icrobial mats ; {M}etabolism ; {M}etagenomics ; {M}etatranscriptomic ; {F}unctioning ; {D}iversity ; {MEDITERRANEE} ; {FRANCE} ; {BERRE} {ETANG}}, booktitle = {}, journal = {{M}icrobial {E}cology}, volume = {80}, numero = {2}, pages = {286--295}, ISSN = {0095-3628}, year = {2020}, DOI = {10.1007/s00248-020-01493-x}, URL = {https://www.documentation.ird.fr/hor/fdi:010077956}, }