Diel partitioning in microbial phosphorus acquisition in the Sargasso Sea

• 成果类型: Article
• 署名作者: Muratore, Daniel; Gilbert, Naomi E.; LeCleir, Gary R.; Wilhelm, Steven W.; Weitz, Joshua S.
• 署名单位: The Santa Fe Institute; University of Tennessee System; University of Tennessee Knoxville; University System of Georgia; Georgia Institute of Technology; United States Department of Energy (DOE); Lawrence Livermore National Laboratory; University System of Maryland; University of Maryland College Park; University System of Maryland; University of Maryland College Park
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-15052
• DOI: 10.1073/pnas.2410268122
• 发表日期: 2025-03-14
• 关键词: ocean; DYNAMICS; carbon; time

摘要

The daily cycle of photosynthetic primary production at the base of marine food webs is often limited by the availability of scarce nutrients. Microbial competition for these scarce resources can be alleviated insofar as the intensity of nutrient uptake and assimilation activities are distributed heterogeneously across organisms over periodic input cycles. Recent analysis of community transcriptional dynamics in the nitrogen-limited subtropical North Pacific gyre revealed evidence of temporal partitioning of nitrogen uptake and assimilation between eukaryotic phytoplankton, cyanobacteria, and heterotrophic bacteria over day-night cycles. Here, we present and demonstrate temporally partitioned phosphorus uptake in this phosphorus-limited cyanobacteria express genes for phosphorus assimilation during the morning, day, and dusk, respectively. These results support the generality of temporal niche partitioning as an emergent mechanism that can structure uptake of limiting nutrients and facilitate