Microbial Community Analysis of Colored Snow from an Alpine Snowfield in Northern Japan Reveals the Prevalence of Betaproteobacteria with Snow Algae.
Microbial Community Analysis of Colored Snow from an Alpine Snowfield in Northern Japan Reveals the Prevalence of Betaproteobacteria with Snow Algae.
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DOI：
10.3389/fmicb.2017.01481
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发表时间：
2017
影响因子：
5.2
通讯作者：
Fukui M
中科院分区：
文献类型：
--
作者：
Terashima M;Umezawa K;Mori S;Kojima H;Fukui M
在高山雪原的融化季节，可以观察到嗜冷藻类的大量繁殖，使雪着色。这些藻类是雪表面环境中重要的初级生产者，支持与藻类共存的微生物群落，其中包括异养细菌和真菌。在这项研究中，我们分析了绿色和红色的雪藻类从朝日，日本的微生物群落。我们发现，绿单胞菌属。是所有分析样本中的优势藻类，衣藻是红雪中第二丰富的属。对于细菌群落概况，属于Betaproteobacteria亚门的物种在绿色和红色雪中经常被检测到，而拟杆菌门的成员在红色雪中也很突出。此外，从红雪接种物中获得的多个独立的绿单胞菌属菌株导致β-变形菌与藻类的生长，并且细菌的存在似乎支持实验室条件下异生藻类培养物的生长。Betaproteobacteria在含藻雪中的优势结合检测的氯单胞菌属。Betaproteobacteria菌株表明，这些细菌可以利用可用的碳源，在藻类丰富的环境，并可能反过来促进藻类生长。
Psychrophilic algae blooms can be observed coloring the snow during the melt season in alpine snowfields. These algae are important primary producers on the snow surface environment, supporting the microbial community that coexists with algae, which includes heterotrophic bacteria and fungi. In this study, we analyzed the microbial community of green and red-colored snow containing algae from Mount Asahi, Japan. We found that Chloromonas spp. are the dominant algae in all samples analyzed, and Chlamydomonas is the second-most abundant genus in the red snow. For the bacterial community profile, species belonging to the subphylum Betaproteobacteria were frequently detected in both green and red snow, while members of the phylum Bacteroidetes were also prominent in red snow. Furthermore, multiple independently obtained strains of Chloromonas sp. from inoculates of red snow resulted in the growth of Betaproteobacteria with the alga and the presence of bacteria appears to support growth of the xenic algal cultures under laboratory conditions. The dominance of Betaproteobacteria in algae-containing snow in combination with the detection of Chloromonas sp. with Betaproteobacteria strains suggest that these bacteria can utilize the available carbon source in algae-rich environments and may in turn promote algal growth.