Gunderson J H, Elwood H, Ingold A, Kindle K, Sogin M L
Proc Natl Acad Sci U S A. 1987 Aug;84(16):5823-7. doi: 10.1073/pnas.84.16.5823.
The phylogenetic relationships among the chlorophyte Chlamydomonas reinhardtii, the chrysophyte Ochromonas danica, and the oomycete Achyla bisexualis were explored by comparing the sequences of their small-subunit ribosomal RNA coding regions. Comparisons of similarity values or inspection of phylogenetic trees constructed by distance matrix methods reveal a very close relationship between oomycetes and chrysophytes. The separation of chrysophytes from chlorophytes is comparable to that of plants from animals, and both separations are far antedated by the divergence of a number of other protist groups.
通过比较莱茵衣藻(一种绿藻)、丹麦赭球藻(一种金藻)和两性绵霉(一种卵菌)的小亚基核糖体RNA编码区序列,探讨了它们之间的系统发育关系。相似性值的比较或通过距离矩阵法构建的系统发育树的检查表明,卵菌和金藻之间存在非常密切的关系。金藻与绿藻的分离类似于植物与动物的分离,而且这两种分离都远早于许多其他原生生物类群的分化。