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从北极和南极海洋环境中分离出的可培养细菌中藻酸盐利用途径的比较

Comparison of Alginate Utilization Pathways in Culturable Bacteria Isolated From Arctic and Antarctic Marine Environments.

作者信息

Cha Qian-Qian, Wang Xiu-Juan, Ren Xue-Bing, Li Dong, Wang Peng, Li Ping-Yi, Fu Hui-Hui, Zhang Xi-Ying, Chen Xiu-Lan, Zhang Yu-Zhong, Xu Fei, Qin Qi-Long

机构信息

State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China.

Department of Molecular Biology, Qingdao Vland Biotech Group Inc., Qingdao, China.

出版信息

Front Microbiol. 2021 Jan 27;12:609393. doi: 10.3389/fmicb.2021.609393. eCollection 2021.

DOI:10.3389/fmicb.2021.609393
PMID:33584613
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7874173/
Abstract

Alginate, mainly derived from brown algae, is an important carbon source that can support the growth of marine microorganisms in the Arctic and Antarctic regions. However, there is a lack of systematic investigation and comparison of alginate utilization pathways in culturable bacteria from both polar regions. In this study, 88 strains were isolated from the Arctic and Antarctic regions, of which 60 strains could grow in the medium with alginate as the sole carbon source. These alginate-utilizing strains belong to 9 genera of the phyla and . The genomes of 26 alginate-utilizing strains were sequenced and genomic analyses showed that they all contain the gene clusters related to alginate utilization. The alginate transport systems of differ from those of and there may be unique transport systems among different genera of . The biogeographic distribution pattern of alginate utilization genes was further investigated. The alginate utilization genes are found to cluster according to bacterial taxonomy rather than geographic location, indicating that the alginate utilization genes do not evolve independently in both polar regions. This study systematically illustrates the alginate utilization pathways in culturable bacteria from the Arctic and Antarctic regions, shedding light into the distribution and evolution of alginate utilization pathways in polar bacteria.

摘要

藻酸盐主要来源于褐藻，是一种重要的碳源，能够支持北极和南极地区海洋微生物的生长。然而，目前对于来自这两个极地地区的可培养细菌中藻酸盐利用途径缺乏系统的调查和比较。在本研究中，从北极和南极地区分离出88株菌株，其中60株能够在以藻酸盐作为唯一碳源的培养基中生长。这些利用藻酸盐的菌株属于门和的9个属。对26株利用藻酸盐的菌株进行了基因组测序，基因组分析表明它们都含有与藻酸盐利用相关的基因簇。的藻酸盐转运系统与的不同，并且在的不同属之间可能存在独特的转运系统。进一步研究了藻酸盐利用基因的生物地理分布模式。发现藻酸盐利用基因是根据细菌分类学而非地理位置聚类的，这表明藻酸盐利用基因在两个极地地区并非独立进化。本研究系统地阐明了北极和南极地区可培养细菌中的藻酸盐利用途径，为极地细菌中藻酸盐利用途径的分布和进化提供了线索。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/283c741170c2/fmicb-12-609393-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/199aaff5f99c/fmicb-12-609393-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/60ad2bd98efe/fmicb-12-609393-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/42ef17d91f3f/fmicb-12-609393-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/283c741170c2/fmicb-12-609393-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/199aaff5f99c/fmicb-12-609393-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/60ad2bd98efe/fmicb-12-609393-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/42ef17d91f3f/fmicb-12-609393-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9463/7874173/283c741170c2/fmicb-12-609393-g004.jpg

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