CAJ | 학술논문

对采自自然水体中囊裸藻属(Trachelomonas)的8种和陀螺藻属(Strombomonas)的两种藻类的囊壳微细结构和元素组成进行了比较分析,并探讨了这两个属的系统演化关系.结果表明:组成囊壳的矿质元素主要是铁和硅,在陀螺藻和表面粗糙的囊裸藻中,硅的含量较高,铁的含量相对较低;在大多数囊裸藻中,尤其是表面致密、光滑的种类中,铁的含量较高,硅的含量较低,矿质元素的组成与囊壳的颜色无直接关系.建议将陀螺藻属(Strombomonas)撤消,原陀螺藻属的种作为囊裸藻属(Trachelomonas)中的一个种组(Group),它们是裸藻科中最原始的具囊壳的类群.
대채자자연수체중낭라조속(Trachelomonas)적8충화타라조속(Strombomonas)적량충조류적낭각미세결구화원소조성진행료비교분석,병탐토료저량개속적계통연화관계.결과표명:조성낭각적광질원소주요시철화규,재타라조화표면조조적낭라조중,규적함량교고,철적함량상대교저;재대다수낭라조중,우기시표면치밀、광활적충류중,철적함량교고,규적함량교저,광질원소적조성여낭각적안색무직접관계.건의장타라조속(Strombomonas)철소,원타라조속적충작위낭라조속(Trachelomonas)중적일개충조(Group),타문시라조과중최원시적구낭각적류군.
Fine structure and elemental composition of envelopes of 10 taxa of Trachelomonas and Strombomonas from natural freshwater bodies in China were studied and phylogeny of both genera were discussed. The results indicate that iron (Fe) and silicon (Si) are the primary mineral elements of the envelopes. Composition of mineral elements was uncorrelated with envelope color, however, it was highly correlated with the microarchitecture of the envelopes. Content of Si was higher than that of Fe in all species of Strombomonas and some species of Trachelomonas with rough surface. In most species of Trachelomonas, especially those with dense and smoothy surface, content of Fe was higher than that of Si. Based on the above results, we propose to assign those species of Strombomonas into Trachelomonas and consider them as a group of the latter. These species were the most primitive among the group with envelopes in Euglenaceae.