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首页> 外文期刊>Journal of Bioscience and Bioengineering >Bacterial community structure and predicted alginate metabolic pathway in an alginate-degrading bacterial consortium
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Bacterial community structure and predicted alginate metabolic pathway in an alginate-degrading bacterial consortium

机译：藻酸盐降解菌群中细菌群落结构和预测藻酸盐代谢途径

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摘要

Methane fermentation is one of the effective approaches for utilization of brown algae; however, this process is limited by the microbial capability to degrade alginate, a main polysaccharide found in these algae. Despite its potential, little is known about anaerobic microbial degradation of alginate. Here we constructed a bacterial consortium able to anaerobically degrade alginate. Taxonomic classification of 16S rRNA gene, based on high-throughput sequencing data, revealed that this consortium included two dominant strains, designated HUA-1 and HUA-2; these strains were related to Clostridiaceae bacterium SK082 (99%) and Dysgonomonas capnocytophagoides (95%), respectively. Alginate lyase activity and metagenomic analyses, based on high-throughput sequencing data, revealed that this bacterial consortium possessed putative genes related to a predicted alginate metabolic pathway. However, HUA-1 and 2 did not grow on agar medium with alginate by using roll-tube method, suggesting the existence of bacterial interactions like symbiosis for anaerobic alginate degradation. (C) 2015, The Society for Biotechnology, Japan. All rights reserved.
机译：甲烷发酵是利用褐藻的有效途径之一。然而，该过程受到微生物降解藻酸盐的能力的限制，藻酸盐是藻类中的主要多糖。尽管具有潜力，但对藻酸盐的厌氧微生物降解知之甚少。在这里，我们建立了一个能够厌氧降解藻酸盐的细菌联盟。根据高通量测序数据对16S rRNA基因进行分类分类显示，该财团包括两个显性菌株，命名为HUA-1和HUA-2。这些菌株分别与梭菌科细菌SK082（99％）和Dysgonomonas capnocytophagoides（95％）有关。基于高通量测序数据的藻酸盐裂解酶活性和宏基因组分析表明，该细菌财团拥有与预测藻酸盐代谢途径相关的推定基因。然而，HUA-1和HUA-1在带有藻酸盐的琼脂培养基上不能通过滚管法生长，这表明存在细菌相互作用，例如共生厌氧藻酸盐降解。 （C）2015年，日本生物技术学会。版权所有。

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