Data from: Microbial life in a fjord: metagenomic analysis of a microbial mat in Chilean Patagonia

The current study describes the taxonomic and functional composition of metagenomic sequences obtained from a filamentous microbial mat isolated from the Comau fjord, located in the northernmost part of the Chilean Patagonia. The taxonomic composition of the microbial community showed a high proportion of members of the Gammaproteobacteria, including a high number of sequences that were recruited to the genomes of Moritella marina MP-1 and Colwellia psycherythraea 34H, suggesting the presence of populations related to these two psychrophilic bacterial species. Functional analysis of the community indicated a high proportion of genes coding for the transport and metabolism of amino acids, as well as in energy production. Among the energy production functions, we found protein-coding genes for sulfate and nitrate reduction, both processes associated with Gammaproteobacteria-related sequences. This report provides the first examination of the taxonomic composition and genetic diversity associated with these conspicuous microbial mat communities and provides a framework for future microbial studies in the Comau fjord.本研究阐述了从智利巴塔哥尼亚最北部的科劳峡湾（Comau Fjord）分离得到的丝状微生物垫（filamentous microbial mat）所获取的宏基因组序列（metagenomic sequences）的分类学与功能组成。该微生物群落的分类学组成显示，γ-变形菌纲（Gammaproteobacteria）成员占比极高，其中存在大量可比对至海生莫特拉菌（Moritella marina）MP-1与嗜冷科尔韦尔氏菌（Colwellia psycherythraea）34H基因组的序列，这表明群落中存在与这两种嗜冷细菌（psychrophilic bacteria）亲缘关系相近的种群。对该群落的功能分析表明，编码氨基酸转运与代谢以及能量产生相关蛋白的基因占比极高。在能量产生相关功能模块中，我们检测到了硫酸盐还原与硝酸盐还原相关的蛋白编码基因，这两类代谢过程均与γ-变形菌纲相关序列存在关联。本研究首次针对这类特征显著的丝状微生物垫群落的分类学组成与遗传多样性展开分析，并为科劳峡湾后续的微生物学研究提供了研究框架。