The dynamics of biologically active small molecules during algal blooms in polar environments

海洋覆盖着我们的星球，充满了微生物生命。然而，这些有机体及其复杂的相互作用在很大程度上是未知的。这项研究计划侧重于阐明细菌-藻类相互作用的自然化学，并探索它们如何影响海洋生物群落和地球气候。具体地说，这项建议的目的是： 1.确定在极地水域消耗气候重要的藻类代谢物二甲基磺酸盐(DMSP)的细菌和真核生物，以及群落组成对DMSP命运的影响 2.藻华期间新型含硫灭藻剂的分离和定量 3.确定这些含硫生物活性分子和变暖的海水在导致藻类种群激增和崩溃方面所起的作用。

The oceans cover our planet and are filled with microbial life. Yet, these organisms and their complex interactions are largely unknown. This research proposal focuses on elucidating the natural chemistry of bacterial-algal interactions and to explore how they influence marine communities and the earth's climate. Specifically, the aims of this proposal are to: 1. Identify bacteria and eukaryotes that consume the climatically important algal metabolite, dimethylsulfonproprionate (DMSP), in polar waters and the influence community composition has on the fate of DMSP 2. Isolate and quantify novel sulfur containing algaecides during algal blooms 3. Determine the role these sulfur containing bioactive molecules and warming ocean waters play in causing algal populations to bloom and collapse.