Vulcanodinium is an ecologically relevant dinoflagellate genus due to its production of neurotoxins known as pinnatoxins. We present here the first examination of the sterols of a Vulcanodinium rugosum isolate. Sterols are ringed lipids that assist in maintaining rigidity of cellular membranes, and the Dinophyceae are well-studied for their ability to produce a diverse array of sterols, many of which have chemotaxonomic utility. We have determined that V. rugosum produces a set of major sterols, namely cholesterol, dinosterol, 4α,24-dimethyl-5α-cholest-22E-en-3β-ol, and 4α,24-dimethyl-5α-cholestan-3β-ol, common to the Dinophyceae. However, this displayed marked differences from those studied members of the genera Scrippsiella and Peridinium, the closest phylogenetic relatives. Included in these differences is production by V. rugosum of a much lower percentage of dinostanol, a saturated form of dinosterol.

中文翻译：

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海洋甲藻属 Vulcanodinium 甾醇的首次检测

Vulcanodinium是一种生态相关的鞭毛藻属，因为它会产生称为羽藻毒素的神经毒素。我们在此首次对Vulcanodinium rugosum分离株的甾醇进行检测。甾醇是环状脂质，有助于维持细胞膜的刚性，并且 Dinophyceae 因其产生多种甾醇的能力而得到充分研究，其中许多甾醇具有化学分类学效用。我们已经确定V。 rugosum产生一组主要甾醇，即胆固醇、二甲基甾醇、4α,24-二甲基-5α-cholest-22E-en-3β-ol 和 4α,24-二甲基-5α-胆甾醇-3β-ol，常见于 Dinophyceae . 然而，这显示出与那些被研究的Scrippsiella属成员的显着差异和Peridinium，最接近的系统发育亲属。这些差异包括V 的生产。 rugosum dinostanol的低得多的百分比，dinosterol的饱和形式的。