期刊
MARINE POLLUTION BULLETIN
卷 141, 期 -, 页码 586-594出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2019.03.001
关键词
Metagenomics; Metatranscriptomics; Environmental microbiology; Sulfur cycling; Environmental pollution; Stressors
资金
- FAPESP [2012/06245-2, ACFD - 2012/14534-4]
- PNPD-CAPES
- CNPq
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) [001]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [12/14534-4, 12/06245-2] Funding Source: FAPESP
Mangrove forests are highly productive yet vulnerable ecosystems that act as important carbon sinks (blue carbon). The objective of this work was to analyze the impact of anthropogenic activities on microbiome structure and functioning. The metagenomic analysis revealed that the taxonomic compositions were grossly similar across all mangrove microbiomes. Remarkably, these microbiomes, along the gradient of anthropogenic impact, showed fluctuations in the relative abundances of bacterial taxa predicted to be involved in sulfur cycling processes. Functions involved in sulfur metabolism, such as APS pathways (associated with sulfate reduction and sulfur oxidation processes) were prevalent across the microbiomes, being sox and dsrAB genes highly expressed on anthropogenically-impacted areas. Apparently, the oil-impacted microbiomes were more affected in taxonomic than in functional terms, as high functional redundancies were noted across them. The microbial gene diversity found was typical for a functional system, even following the previous disturbance.
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