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首页> 外文期刊>MicrobiologyOpen >Polymetallic nodules, sediments, and deep waters in the equatorial North Pacific exhibit highly diverse and distinct bacterial, archaeal, and microeukaryotic communities
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Polymetallic nodules, sediments, and deep waters in the equatorial North Pacific exhibit highly diverse and distinct bacterial, archaeal, and microeukaryotic communities

机译：赤道北太平洋的多金属结核，沉积物和深水区显示出高度多样且截然不同的细菌，古细菌和微真核生物群落

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摘要

Abstract Concentrated seabed deposits of polymetallic nodules, which are rich in economically valuable metals (e.g., copper, nickel, cobalt, manganese), occur over vast areas of the abyssal Pacific Ocean floor. Little is currently known about the diversity of microorganisms inhabiting abyssal habitats. In this study, sediment, nodule, and water column samples were collected from the Clarion-Clipperton Zone of the Eastern North Pacific. The diversities of prokaryote and microeukaryote communities associated with these habitats were examined. Microbial community composition and diversity varied with habitat type, water column depth, and sediment horizon. Thaumarchaeota were relatively enriched in the sediments and nodules compared to the water column, whereas Gammaproteobacteria were the most abundant sequences associated with nodules. Among the Eukaryota, rRNA genes belonging to the Cryptomonadales were relatively most abundant among organisms associated with nodules, whereas rRNA gene sequences deriving from members of the Alveolata were relatively enriched in sediments and the water column. Nine operational taxonomic unit (OTU)s were identified that occur in all nodules in this dataset, as well as all nodules found in a study 3000?￠????9000 km from our site. Microbial communities in the sediments had the highest diversity, followed by nodules, and then by the water column with <1/3 the number of OTUs as in the sediments.
机译：摘要多金属结核集中海床矿床遍布太平洋深海地区，这些矿床富含具有经济价值的金属（例如铜，镍，钴，锰）。目前，关于深海栖息地中微生物的多样性知之甚少。在这项研究中，沉积物，结核和水柱样品是从北太平洋东部的克拉里奥-克利珀顿区收集的。检查了与这些栖息地相关的原核生物和微型真核生物的多样性。微生物群落组成和多样性随生境类型，水柱深度和沉积物层位而变化。与水柱相比，丘陵藻在沉积物和结核中相对富集，而丙型细菌是与结核相关的最丰富的序列。在真核生物中，属于隐孢子虫的rRNA基因在与结核有关的生物中相对最丰富，而来源于肺泡成员的rRNA基因序列在沉积物和水柱中相对富集。在此数据集中所有结节中以及在距我们站点3000-9000公里的研究中发现的所有结节中，共识别出九个可操作的分类单位（OTU）。沉积物中的微生物群落具有最高的多样性，其次是结核，然后是水柱，其OTU数量少于沉积物中的OTU数的1/3。

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