Functional biogeography of marine microbial heterotrophs

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-05-22 DOI:10.1126/science.ado5323

Emily J. Zakem, Jesse McNichol, J. L. Weissman, Yubin Raut, Liang Xu, Elisa R. Halewood, Craig A. Carlson, Stephanie Dutkiewicz, Jed A. Fuhrman, Naomi M. Levine

引用次数: 0

Abstract

Heterotrophic bacteria and archaea (“heteroprokaryotes”) drive global carbon cycling, but how to quantitatively organize their functional complexity remains unclear. We generated a global-scale understanding of marine heteroprokaryotic functional biogeography by synthesizing genetic sequencing data with a mechanistic marine ecosystem model. We incorporated heteroprokaryotic diversity into the trait-based model along two axes: substrate lability and growth strategy. Using genetic sequences along three ocean transects, we compiled 21 heteroprokaryotic guilds and estimated their degree of optimization for rapid growth (copiotrophy). Data and model consistency indicated that gradients in grazing and substrate lability predominantly set biogeographical patterns, and we identified deep-ocean “slow copiotrophs” whose ecological interactions control the surface accumulation of dissolved organic carbon.

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海洋微生物异养生物的功能生物地理学

异养细菌和古细菌（“异原核生物”）驱动全球碳循环，但如何定量组织其功能复杂性尚不清楚。通过综合基因测序数据和机械海洋生态系统模型，我们对海洋异原核功能生物地理学有了全球范围的了解。我们将异源原核生物多样性纳入基于性状的模型，沿两个轴：底物不稳定性和生长策略。利用3个海洋样带的基因序列，我们编译了21个异原核行会，并估计了它们快速生长（copiotrophy）的优化程度。数据和模型的一致性表明，放牧和基质不稳定性的梯度主要决定了生物地理格局，我们发现了深海“缓慢共养生物”，其生态相互作用控制着表层溶解有机碳的积累。

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

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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