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Bethany C Kolody^1,2,3, Rohan Sachdeva³, Hong Zheng²

¹Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA.

Science (New York, N.Y.)

|July 10, 2025

概括

海洋循环塑造深海微生物生态系统. 基因组数据显示南太平洋水域有不同的微生物群落和功能,

科学领域:

海洋微生物学
海洋学
基因组学

背景情况:

全球海洋循环形成了独特的深海区域,具有独特的物理化学特性.
这些水体在多大程度上拥有独立的微生物生态系统是未知的.

研究的目的:

在南太平洋划定微生物分类学和功能界限.
了解水文学,水质年龄和循环如何影响这些微生物生态系统.

主要方法:

综合广泛的基因组数据与水文测量和水质年龄.
对 prokaryotic 丰富性,分类学分布和功能潜力的分析.
微生物基因组的重建以确定空间和功能组织.

主要成果:

Prokaryotic 丰富度随着深度的增加而增加,在地表水中形成一个生物线.
在较深的水域中,微生物的丰富性仍然很高,而老化的水体则略有减少.
确定了6个空间上不同的微生物分类群和10个功能上不同的生物群.
微生物群落结构主要由风驱动的表面循环和密度驱动的深层循环构成.

结论:

水的物理化学,受水深年龄的影响,是海洋微生物多样性和功能潜力的主要驱动因素.
海洋循环模式在构建深海微生物生态系统方面起着至关重要的作用.

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