Studies on a novel eukaryotic assemblage containing haptophytes and cryptophytes: Possible impact on the Chromalveolata hypothesis.

最近的研究提出了一种新的单系组合，包括两个主要的真核藻类群--单藻和隐藻，以及各种异养物种。在这项研究中，我们对异养藻类(H+C)组合的异养成员进行了深入的mRNA测序，其中包括一种神秘的异养鞭毛藻。通过对mrna序列数据的分析，我们解决了以下三个问题：(1)H+C组合中光营养和异养成员的多样性和详细关系；(2)H+C组合中光合作用和质体的进化；(3)H+C组合在真核生物树中的系统发育地位

Recent studies proposed a novel monophyletic assemblage of two of major eukaryotic algal groups, haptophytes and cryptophytes, together with miscellaneous heterotrophic species. In this study, we conducted deep mRNA sequencing on heterotrophic members of the haptophyte + cryptophyte (H + C) assemblage including an enigmatic heterotrophic flagellate Palpitomonas bilix. By analyzing the mRNA sequence data, we addressed three issues described below;(1) the diversity and detailed relationship between the phototrophic and heterotrophic members in H + C assemblage(2) the evolution of photosynthesis and plastids in H + C assemblage, and(3) the phylogenetic position of H + C assemblage in the tree of eukaryotes