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海米马斯蒂戈福拉是一种新型超王国级的真核生物系

Gordon Lax¹, Yana Eglit¹, Laura Eme^2,3

¹Department of Biology, Centre for Comparative Genomics and Evolutionary Bioinformatics, Dalhousie University, Halifax, Nova Scotia, Canada.

|November 16, 2018

概括

研究人员已经将独特的Hemimastigophora群,以前未被分配,作为一个独立的超王国血统. 这一发现重新塑造了我们对真核生物进化和最后一个真核生物共同祖先的理解.

科学领域:

细胞进化
抗菌学
分子遗传学

背景情况:

大多数真核生物被基因分类,但Hemimastigophora仍然没有被分配.
半虫是具有独特细胞结构的形态上独特的掠食性原生动物.
此前没有Hemimastigophora的分子数据或培养.

研究的目的:

确定Hemimastigophora在真核生命树中的遗传位置.
调查Hemimastigophora的进化意义,以了解深层真核生物的分歧.
为未来的基因组和细胞生物学研究建立一个可培养的模型.

主要方法:

使用高覆盖率,独立于种植的转录组分析.
与已确定的真核生物超群进行比较分析.
建立第一个Hemimastigote培养 (Hemimastix kukwesjijk sp. 没有.

主要成果:

在所有已建立的真核超群之外.
这种血统形成了一个独立的超王国级别群体.
它可能是"Diaphoretickes"超级群的姐妹类,影响真核树拓.
第一个Hemimastix kukwesjijk的培养成功建立.

结论:

海米马斯蒂戈福拉 (Hemimastigophora) 是一个主要的,以前未被认可的真核生物进化系.
它的基因组定位需要重新评估真核生物的分类和深度进化历史.
这种新文化为未来关于真核生物起源和最后一个真核生物共同祖先的研究提供了重要资源.

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