Stress-Induced Lipid Accumulation in Emiliania Huxleyi: Impact on Trophic Ecology and Paleothermometry

赫氏一点红的中性脂质包括一组特征性的烯酮和相关化合物，其不饱和度受生长温度的影响。 这些化合物作为古温度的指示剂引起了人们极大的兴趣。 在这项研究中，来自俄勒冈州州立大学和加州州立大学奇科分校的研究人员将在各种大肠杆菌中对这些化合物进行一系列实验室研究。huxleyii菌株。 这些实验将被设计为测试这些化合物在生长限制期间和环境条件变化之后作为能量储存的假设。 此外，他们还将测试一个假设，即含有高水平这些化合物的藻类在营养上不太适合原生动物食草动物。

ABSTRACTOCE-0002186The neutral lipids of Emiliania huxleyii include a characteristic set of alkenones and related compounds with degrees of unsaturation influenced by growth temperature. These compounds have attracted considerable interest as indicators of paleotemperature. In this study, researchers at Oregon State University and California State University at Chico will carry out a set of laboratory investigations of these compounds in a variety of E. huxleyii strains. The experiments would be designed to test the hypothesis that these compounds function as energy stores during growth limitation and following shifts in environmental conditions. Additionally, they would test the hypothesis that algae with high levels of these compounds are nutritionally less suitable for protozoan grazers.