{"title":"Going deep on marine lipid metabolism","authors":"Florence Schubotz","doi":"10.1126/science.ads0919","DOIUrl":null,"url":null,"abstract":"<div >Marine algae account for almost half of global carbon fixation. A substantial proportion of this photosynthetic biomass is exported to the deep ocean through the biological carbon pump (see the figure). As algal biomass sinks through the water column, it is slowly degraded by diverse microorganisms (<i>1</i>). Ultimately, only a fraction reaches the seafloor, where it becomes buried over geologic timescales (<i>2</i>). Although studies have uncovered the microbial networks associated with sinking particle degradation (<i>3</i>), the processes that transform organic material as it descends remain poorly understood. On page 1182 of this issue, Behrendt <i>et al</i>. (<i>4</i>) report that cooperation between marine bacteria with distinct dietary preferences for lipid components of sinking organic matter can influence the transport efficiency of lipid carbon to the seabed. Understanding how microbial metabolism constrains the biological carbon pump is vital given its role as a regulator for atmospheric carbon dioxide (CO<sub>2</sub>) concentrations (<i>2</i>).</div>","PeriodicalId":21678,"journal":{"name":"Science","volume":null,"pages":null},"PeriodicalIF":44.7000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science","FirstCategoryId":"103","ListUrlMain":"https://www.science.org/doi/10.1126/science.ads0919","RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Marine algae account for almost half of global carbon fixation. A substantial proportion of this photosynthetic biomass is exported to the deep ocean through the biological carbon pump (see the figure). As algal biomass sinks through the water column, it is slowly degraded by diverse microorganisms (1). Ultimately, only a fraction reaches the seafloor, where it becomes buried over geologic timescales (2). Although studies have uncovered the microbial networks associated with sinking particle degradation (3), the processes that transform organic material as it descends remain poorly understood. On page 1182 of this issue, Behrendt et al. (4) report that cooperation between marine bacteria with distinct dietary preferences for lipid components of sinking organic matter can influence the transport efficiency of lipid carbon to the seabed. Understanding how microbial metabolism constrains the biological carbon pump is vital given its role as a regulator for atmospheric carbon dioxide (CO2) concentrations (2).
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