Light rare earth element depletion during Deepwater Horizon blowout methanotrophy.
Light rare earth element depletion during Deepwater Horizon blowout methanotrophy.
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DOI：
10.1038/s41598-017-11060-z
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发表时间：
2017-09-04
影响因子：
4.6
通讯作者：
Kessler JD
中科院分区：
文献类型：
--
作者：
Shiller AM;Chan EW;Joung DJ;Redmond MC;Kessler JD
稀土元素一般不被认为具有生物学作用。然而，最近的研究表明，轻稀土元素（LREE：La，Ce，Pr和Nd）是必不可少的至少一些甲烷氧化菌，在XoxF型甲醇脱氢酶（MDH）的辅因子。我们在这里表明，溶解轻稀土元素显着去除在深水地平线（DWH）井喷期间淹没羽状的富甲烷水。此外，与天然甲烷富集沃茨从烃渗漏在DWH井口附近进行的培养实验也表明轻稀土去除与甲烷消耗的同时。孵育样品的宏基因组测序显示存在含LREE的MDH。我们的现场和实验室观察提供了进一步的了解甲烷氧化的生化途径在DWH井喷。此外，我们的研究结果是第一次观察到的直接生物改变的稀土元素分布在海洋系统。鉴于普遍存在的LREE含MDHS在海洋系统中，我们的研究结果表明，生物吸收LREE是海洋地球化学的这组元素以前被认为是生物活性和未解决的因素甲烷，一种有效的温室气体，从海洋通量的一个被忽视的方面。
Rare earth elements have generally not been thought to have a biological role. However, recent work has demonstrated that the light REEs (LREEs: La, Ce, Pr, and Nd) are essential for at least some methanotrophs, being co-factors in the XoxF type of methanol dehydrogenase (MDH). We show here that dissolved LREEs were significantly removed in a submerged plume of methane-rich water during the Deepwater Horizon (DWH) well blowout. Furthermore, incubation experiments conducted with naturally methane-enriched waters from hydrocarbon seeps in the vicinity of the DWH wellhead also showed LREE removal concurrent with methane consumption. Metagenomic sequencing of incubation samples revealed that LREE-containing MDHs were present. Our field and laboratory observations provide further insight into the biochemical pathways of methanotrophy during the DWH blowout. Additionally, our results are the first observations of direct biological alteration of REE distributions in oceanic systems. In view of the ubiquity of LREE-containing MDHs in oceanic systems, our results suggest that biological uptake of LREEs is an overlooked aspect of the oceanic geochemistry of this group of elements previously thought to be biologically inactive and an unresolved factor in the flux of methane, a potent greenhouse gas, from the ocean.
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影响因子：
--
作者：
Huntemann M;Ivanova NN;Mavromatis K;Tripp HJ;Paez-Espino D;Tennessen K;Palaniappan K;Szeto E;Pillay M;Chen IM;Pati A;Nielsen T;Markowitz VM;Kyrpides NC
通讯作者：
Kyrpides NC
影响因子：
10.7
作者：
Kumar, Sudhir;Stecher, Glen;Tamura, Koichiro
通讯作者：
Tamura, Koichiro
影响因子：
5.2
作者：
Diercks, Arne-R.;Highsmith, Raymond C.;Lohrenz, Steven E.
通讯作者：
Lohrenz, Steven E.
DOI：
10.1073/pnas.1619871114
发表时间：
2017-01-10
影响因子：
11.1
作者：
Krause, Sascha M. B.;Johnson, Timothy;Lidstrom, Mary E.
通讯作者：
Lidstrom, Mary E.
影响因子：
10.9
作者：
Bonificio, William D.;Clarke, David R.
通讯作者：
Clarke, David R.