Papina M, Meziane T, van Woesik R
Institute of Biology and Soil, Far Eastern Branch of the Russian Academy of Sciences, 159, Prospect 100-Letiya, 690041, Vladivostok, Russia.
Comp Biochem Physiol B Biochem Mol Biol. 2003 Jul;135(3):533-7. doi: 10.1016/s1096-4959(03)00118-0.
We compared the fatty acid composition of the host-coral Montipora digitata with the fatty acid composition in the coral's endosymbiotic dinoflagellates (zooxanthellae). Fatty acids as methyl esters were determined using gas chromatography (GC) and verified by GC-mass spectrometry. We found the main difference between the fatty acids in the host and their symbionts were that zooxanthellae supported higher proportions of polyunsaturated fatty acids. The presence of fatty acids specific to dinoflagellates (i.e. 18:4omega3, 22:5omega3 and 22:6omega3) in the host tissue suggests that zooxanthellae provide the coral host not only with saturated fatty acids, but also with diverse polyunsaturated fatty acids.
我们比较了宿主珊瑚指状蔷薇珊瑚（Montipora digitata）的脂肪酸组成与该珊瑚内共生双鞭毛虫（虫黄藻）的脂肪酸组成。脂肪酸甲酯通过气相色谱法（GC）测定，并经GC-质谱法验证。我们发现宿主及其共生体脂肪酸之间的主要差异在于虫黄藻中多不饱和脂肪酸的比例更高。宿主组织中存在双鞭毛虫特有的脂肪酸（即18:4ω3、22:5ω3和22:6ω3），这表明虫黄藻不仅为珊瑚宿主提供饱和脂肪酸，还提供多种多不饱和脂肪酸。
