New Microbial Biodiversity in Marine Sediments.

IF 14.3 1区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS
Brett J Baker, Kathryn E Appler, Xianzhe Gong
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引用次数: 40

Abstract

Microbes in marine sediments represent a large portion of the biosphere, and resolving their ecology is crucial for understanding global ocean processes. Single-gene diversity surveys have revealed several uncultured lineages that are widespread in ocean sediments and whose ecological roles are unknown, and advancements in the computational analysis of increasingly large genomic data sets have made it possible to reconstruct individual genomes from complex microbial communities. Using these metagenomic approaches to characterize sediments is transforming our view of microbial communities on the ocean floor and the biodiversity of the planet. In recent years, marine sediments have been a prominent source of new lineages in the tree of life. The incorporation of these lineages into existing phylogenies has revealed that many belong to distinct phyla, including archaeal phyla that are advancing our understanding of the origins of cellular complexity and eukaryotes. Detailed comparisons of the metabolic potentials of these new lineages have made it clear that uncultured bacteria and archaea are capable of mediating key previously undescribed steps in carbon and nutrient cycling.

海洋沉积物中新的微生物多样性。
海洋沉积物中的微生物代表了生物圈的很大一部分,解决它们的生态学对理解全球海洋过程至关重要。单基因多样性调查揭示了在海洋沉积物中广泛存在的几种未培养的谱系,它们的生态作用是未知的,对越来越大的基因组数据集的计算分析的进步使得从复杂的微生物群落中重建个体基因组成为可能。使用这些宏基因组方法来表征沉积物正在改变我们对海底微生物群落和地球生物多样性的看法。近年来,海洋沉积物已成为生命之树上新谱系的重要来源。将这些谱系整合到现有的系统发育中,揭示了许多谱系属于不同的门,包括古细菌门,这促进了我们对细胞复杂性和真核生物起源的理解。对这些新谱系的代谢潜力的详细比较表明,未培养的细菌和古细菌能够介导先前未描述的碳和营养循环的关键步骤。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Annual Review of Marine Science
Annual Review of Marine Science 地学-地球化学与地球物理
CiteScore
33.60
自引率
0.60%
发文量
40
期刊介绍: The Annual Review of Marine Science, published since 2009, offers a comprehensive overview of the field. It covers various disciplines, including coastal and blue water oceanography (biological, chemical, geological, and physical), ecology, conservation, and technological advancements related to the marine environment. The journal's transition from gated to open access through Annual Reviews' Subscribe to Open program ensures that all articles are available under a CC BY license, promoting wider accessibility and dissemination of knowledge.
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