Influence of short and long term processes on SAR11 communities in open ocean and coastal systems.
Influence of short and long term processes on SAR11 communities in open ocean and coastal systems.
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DOI：
10.1038/s43705-022-00198-1
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发表时间：
2022-11-19
期刊：
影响因子：
--
通讯作者：
Temperton, Ben
中科院分区：
文献类型：
--
作者：
Bolanos, Luis M.;Tait, Karen;Somerfield, Paul J.;Parsons, Rachel J.;Giovannoni, Stephen J.;Smyth, Timothy;Temperton, Ben
SAR 11细菌控制着海洋表面，是将固定碳转化为大气二氧化碳的主要参与者。SAR 11分支是由生态位专门的生态型，显示独特的时空转换。我们分析了SAR 11生态型的季节性在两个长期的16 S rRNA扩增子时间序列代表不同的北大西洋制度：马尾藻海（亚热带海洋环流; BATS）和温带沿海西英吉利海峡（WEC）。使用遗传学解析的扩增子序列变体（ASVs），我们评估了季节性环境对SAR 11生态型周期性的限制。尽管两个站点之间的温度和养分供应量存在很大差异，但在SAR 11的继承定义为夏季和冬季ASV集群。在这两个网站的夏季集群占主导地位的生态型Ia.3。冬季集群在BATS以生态类型Ib和IIa. A为主，在WEC以生态类型Ia. 1和IIa.B为主。WEC时间序列内的2年每周分析表明，SAR 11社区对短期环境波动的反应是可变的。2016年，社区的变化是突然的，并与环境变化同步。然而，在2015年，变化是渐进的，与环境波动无关，可能是由于强风增加了混合。我们证明，年际天气变化干扰SAR 11季节进展的步伐。
SAR11 bacteria dominate the surface ocean and are major players in converting fixed carbon back to atmospheric carbon dioxide. The SAR11 clade is comprised of niche-specialized ecotypes that display distinctive spatiotemporal transitions. We analyzed SAR11 ecotype seasonality in two long-term 16S rRNA amplicon time series representing different North Atlantic regimes: the Sargasso Sea (subtropical ocean-gyre; BATS) and the temperate coastal Western English Channel (WEC). Using phylogenetically resolved amplicon sequence variants (ASVs), we evaluated seasonal environmental constraints on SAR11 ecotype periodicity. Despite large differences in temperature and nutrient availability between the two sites, at both SAR11 succession was defined by summer and winter clusters of ASVs. The summer cluster was dominated by ecotype Ia.3 in both sites. Winter clusters were dominated by ecotypes Ib and IIa.A at BATS and Ia.1 and IIa.B at WEC. A 2-year weekly analysis within the WEC time series showed that the response of SAR11 communities to short-term environmental fluctuations was variable. In 2016, community shifts were abrupt and synchronized to environmental shifts. However, in 2015, changes were gradual and decoupled from environmental fluctuations, likely due to increased mixing from strong winds. We demonstrate that interannual weather variability disturb the pace of SAR11 seasonal progression.
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影响因子：
3.7
作者：
Bolanos, Luis M.;Choi, Chang Jae;Giovannoni, Stephen
通讯作者：
Giovannoni, Stephen
影响因子：
11
作者：
Auladell, Adria;Sanchez, Pablo;Ferrera, Isabel
通讯作者：
Ferrera, Isabel
DOI：
10.1073/pnas.1409644111
发表时间：
2014-07-15
影响因子：
11.1
作者：
Eren, A. Murat;Borisy, Gary G.;Welch, Jessica L. Mark
通讯作者：
Welch, Jessica L. Mark
DOI：
10.1073/pnas.93.15.7979
发表时间：
1996-07-23
影响因子：
11.1
作者：
Giovannoni, SJ;Rappe, MS;Adair, NL
通讯作者：
Adair, NL
影响因子：
11
作者：
Carlson, Craig A.;Morris, Robert;Vergin, Kevin
通讯作者：
Vergin, Kevin