THE ROAD TO CNIDARIA: HISTORY OF PHYLOGENY OF THE MYXOZOA
THE ROAD TO CNIDARIA: HISTORY OF PHYLOGENY OF THE MYXOZOA
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DOI：
10.1645/14-671.1
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发表时间：
2015-06-01
影响因子：
1.3
通讯作者：
Siddall, Mark E.
中科院分区：
文献类型：
--
作者：
Foox, Jonathan;Siddall, Mark E.
粘虫是高度衍生的刺胞动物的一个分支。这些极其简单的水生脊椎动物和无脊椎动物的寄生虫的系统发育身份长期以来一直不确定，所有早期的分类都将粘虫指定为原生生物。虽然经常提出的建议，这些寄生虫的感染性孢子是多细胞的，可能是刺胞动物的起源，这将需要一个系统发育分析的超微结构发育特征结合rRNA基因序列，以验证粘虫作为次要减少刺胞动物，姐妹的polypoidozoan寄生虫Polypodium spermiforme。虽然随后的一系列分子研究提出了假设粘虫作为基础bilaterians，triploblasts，甚至线虫，改进的分类单元采样的基因组分析证实了具有里程碑意义的论文，验证了刺胞动物的性质，这组。本文回顾了粘虫的系统发育研究，旨在阐明历史进展和当前知识，并强调粘虫生物学家现在所处的适当位置，以解决这些寄生虫的细胞生物学以及动物生命进化的基本问题。
Myxozoans are a clade of highly derived cnidarians. The phylogenetic identity of these extremely simplified parasites of aquatic vertebrates and invertebrates had long been uncertain, with all early classifications designating Myxozoa as protists. Though suggestions were frequently made that the infective spores of these parasites are multicellular and possibly of cnidarian origin, it would take a phylogenetic analysis of ultrastructural developmental characters in combination with rRNA gene sequences to verify the Myxozoa as secondarily reduced cnidarians, sister to the polypoidozoan parasite Polypodium hydriforme. While a series of subsequent molecular studies suggested hypotheses of Myxozoa as basal bilaterians, triploblasts, or even nematodes, phylogenomic analyses with improved taxon sampling corroborated the landmark paper that verified the cnidarian nature of this group. This review of the body of phylogenetic work on Myxozoa aims to clarify historical progress and current knowledge, as well as to emphasize the opportune position that myxozoan biologists now are in, to address fundamental questions of cell biology of these parasites as well as the evolution of animal life.