Impacts of microbial assemblage and environmental conditions on the distribution of anatoxin-a producing cyanobacteria within a river network
Impacts of microbial assemblage and environmental conditions on the distribution of anatoxin-a producing cyanobacteria within a river network
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DOI：
10.1038/s41396-019-0374-3
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发表时间：
2019-06-01
期刊：
影响因子：
11
通讯作者：
Banfield, Jillian F.
中科院分区：
文献类型：
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作者：
Bouma-Gregson, Keith;Olm, Matthew R.;Banfield, Jillian F.
湖泊蓝藻水华一直受到关注，但最近，河流底栖蓝藻垫的有害影响被认识到。然而，我们对各种底栖蓝藻在河网中的分布情况，以及环境条件或其聚生体中的其他相关微生物如何影响其生物合成能力知之甚少。我们进行了宏基因组测序22颤藻为主（蓝藻）微生物垫收集整个鳗鱼河网络在北方加州和调查的因素与类毒素-a生产蓝藻。所有的微生物群落都是由一种或两种蓝藻所控制的，因此代谢的关键是光合作用和碳氧化。只有少数代谢促进了垫社区的增长，几乎没有证据表明厌氧代谢途径。我们从基因组学上定义了四种蓝藻，
Blooms of planktonic cyanobacteria have long been of concern in lakes, but more recently, harmful impacts of riverine benthic cyanobacterial mats been recognized. As yet, we know little about how various benthic cyanobacteria are distributed in river networks, or how environmental conditions or other associated microbes in their consortia affect their biosynthetic capacities. We performed metagenomic sequencing for 22 Oscillatoriales-dominated (Cyanobacteria) microbial mats collected across the Eel River network in Northern California and investigated factors associated with anatoxin-a producing cyanobacteria. All microbial communities were dominated by one or two cyanobacterial species, so the key mat metabolisms involve oxygenic photosynthesis and carbon oxidation. Only a few metabolisms fueled the growth of the mat communities, with little evidence for anaerobic metabolic pathways. We genomically defined four cyanobacterial species, all which shared