Metagenomic analysis reveals global-scale patterns of ocean nutrient limitation
Metagenomic analysis reveals global-scale patterns of ocean nutrient limitation
复制标题
DOI：
10.1126/science.abe6301
复制
发表时间：
2021-04-16
期刊：
影响因子：
56.9
通讯作者：
Martiny, Adam C.
中科院分区：
文献类型：
--
作者：
Ustick, Lucas J.;Larkin, Alyse A.;Martiny, Adam C.
营养盐供应调节浮游植物的活动，但营养盐限制和共同限制的全球地理学知之甚少。原绿球藻通过基因的获得和丢失来适应当地环境，我们使用基因组变化作为营养胁迫适应的指标。作为全球海洋船舶水文调查计划（Bio-GO-SHIP）的一部分，我们收集了来自所有主要海洋区域的宏基因组，并量化了参与氮，磷和铁同化的基因的变化。我们发现，区域过渡的压力类型和严重程度，以及广泛的共同压力。原绿球藻胁迫基因，瓶实验，地球系统模型预测相关。我们认为，多营养素胁迫的植物地理学是化学计量学上连接的固氮控制。我们基于组学的浮游植物资源利用的描述提供了一个微妙的和高度分辨率的描述在全球海洋的营养压力。
Nutrient supply regulates the activity of phytoplankton, but the global biogeography of nutrient limitation and co-limitation is poorly understood. Prochlorococcus adapt to local environments by gene gains and losses, and we used genomic changes as an indicator of adaptation to nutrient stress. We collected metagenomes from all major ocean regions as part of the Global Ocean Ship-based Hydrographic Investigations Program (Bio-GO-SHIP) and quantified shifts in genes involved in nitrogen, phosphorus, and iron assimilation. We found regional transitions in stress type and severity as well as widespread co-stress. Prochlorococcus stress genes, bottle experiments, and Earth system model predictions were correlated. We propose that the biogeography of multinutrient stress is stoichiometrically linked by controls on nitrogen fixation. Our omics-based description of phytoplankton resource use provides a nuanced and highly resolved description of nutrient stress in the global ocean.