Edgcomb V P
Geology and Geophysics Department, Woods Hole Oceanographic Institution, USA.
Curr Opin Microbiol. 2016 Jun;31:169-175. doi: 10.1016/j.mib.2016.04.001. Epub 2016 Apr 17.
Marine protists are integral to marine food webs and exhibit complex relationships with other microbial taxa. Phagotrophic protists contribute significantly to carbon turnover in the sunlit ocean and evidence suggests grazing in the dark ocean can be significant as well. New in situ sampling technologies hold great promise for more accurately accessing these impacts. The molecular signatures of parasitic protists comprise significant fractions of many high-throughput sequencing datasets, suggesting a major role in controlling populations of their host(s). The prokaryotic symbionts of free-living protists can be numerous, and, particularly in low-oxygen to anoxic marine habitats, their collective metabolisms may contribute significantly to biogeochemical cycling. This short review addresses principally planktonic communities in the mesopelagic and bathypelagic dark ocean.
海洋原生生物是海洋食物网不可或缺的一部分，并且与其他微生物类群呈现出复杂的关系。吞噬性原生生物对阳光照射海域的碳周转有重大贡献，而且有证据表明，在黑暗海域的摄食活动也可能很显著。新的原位采样技术有望更准确地评估这些影响。寄生原生生物的分子特征在许多高通量测序数据集中占相当大的比例，这表明它们在控制宿主种群方面发挥着重要作用。自由生活的原生生物的原核共生体数量可能很多，特别是在低氧到缺氧的海洋栖息地，它们的集体代谢可能对生物地球化学循环有重大贡献。这篇简短的综述主要探讨了中层和深层黑暗海洋中的浮游生物群落。
