Marine College, Shandong University, Weihai, 264209, China.
Integrated Technical Service Center of Jiangyin Customs, Jiangyin, 214441, China.
Sci Data. 2023 Aug 10;10(1):536. doi: 10.1038/s41597-023-02447-x.
The great threat of microbes carried by ballast water calls for figuring out the species composition of the ballast-tank microbial community, where the dark, cold, and anoxic tank environment might select special taxa. In this study, we reconstructed 103 metagenome-assembled genomes (MAGs), including 102 bacteria and one archaea, from four vessels on international voyages. Of these MAGs, 60 were 'near complete' (completeness >90%), 34 were >80% complete, and nine were >75% complete. Phylogenomic analysis revealed that over 70% (n = 74) of these MAGs represented new taxa at different taxonomical levels, including one order, three families, 12 genera, and 58 species. The species composition of these MAGs was most consistent with the previous reports, with the most abundant phyla being Proteobacteria (n = 69), Bacteroidota (n = 17), and Actinobacteriota (n = 7). These draft genomes provided novel data on species diversity and function in the ballast-tank microbial community, which will facilitate ballast water and sediments management.
压载水携带的微生物是一个巨大的威胁，这就需要弄清楚压载舱微生物群落的物种组成，而压载舱黑暗、寒冷和缺氧的环境可能会选择特殊的分类群。在这项研究中，我们从四艘国际航行船舶中重建了 103 个宏基因组组装基因组（MAG），包括 102 种细菌和一种古菌。这些 MAG 中，有 60 个是“接近完整”（完整性>90%），34 个>80%完整，9 个>75%完整。系统发育基因组分析显示，超过 70%（n=74）的这些 MAG 代表了不同分类水平的新分类群，包括一个目、三个科、12 个属和 58 个种。这些 MAG 的物种组成与之前的报道最一致，最丰富的门是变形菌门（n=69）、拟杆菌门（n=17）和放线菌门（n=7）。这些草案基因组提供了压载舱微生物群落中物种多样性和功能的新数据，这将有助于压载水和沉积物的管理。
