Trace metal contents of autotrophic flagellates from contrasting open‐ocean ecosystems
Trace metal contents of autotrophic flagellates from contrasting open‐ocean ecosystems
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DOI：
10.1002/lol2.10258
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发表时间：
2022-05
影响因子：
7.8
通讯作者：
L. E. Sofen;Olga A. Antipova;M. Ellwood;N. Gilbert;Gary R. Lecleir;M. Lohan;C. Mahaffey;Elizabeth L. Mann;D. Ohnemus;S. Wilhelm;B. Twining
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作者：
L. E. Sofen;Olga A. Antipova;M. Ellwood;N. Gilbert;Gary R. Lecleir;M. Lohan;C. Mahaffey;Elizabeth L. Mann;D. Ohnemus;S. Wilhelm;B. Twining
纳米和皮皮型粉碎物是开放式生态系统的主要组成部分，是生物地球化学模型中的主要浮游生物功能类型之一，但对它们的痕量金属含量知之甚少。 ％，硅藻中已知的塑性的一部分。培养物的可用性。类似于培养的二颗粒量，对铁的可用性几乎没有响应。这些结果表明，大型营养素和金属的可用性对于控制小型真核生物开放式海洋浮游植物的金属含量同样重要。
Nano‐ and picophytoplankton are a major component of open‐ocean ecosystems and one of the main plankton functional types in biogeochemical models, yet little is known about their trace metal contents. In cultures of the picoeukaryote Ostreococcus lucimarinus, iron limitation reduced iron quotas by 68%, a fraction of the plasticity known in diatoms. In contrast, a commonly co‐occurring cyanobacterium, Prochlorococcus, showed variable iron contents with iron availability in culture. Synchrotron X‐ray fluorescence was used to measure single‐cell metal (Mn, Fe, Co, Ni, Zn) quotas of autotrophic flagellates (1.4–16.8‐μm diameter) collected from four ocean regions. Iron quotas were tightly constrained and showed little response to iron availability, similar to cultured Ostreococcus. Zinc quotas also did not vary with zinc availability but appeared to vary with phosphorus availability. These results suggest that macronutrient and metal availability may be equally important for controlling metal contents of small eukaryotic open‐ocean phytoplankton.