A secondary symbiosis in progress?
A secondary symbiosis in progress?
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DOI：
10.1126/science.1116125
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发表时间：
2005-10-14
期刊：
影响因子：
56.9
通讯作者：
Inouye, I
中科院分区：
文献类型：
--
作者：
Okamoto, N;Inouye, I
藻类通过与蓝藻（初级内共生）或其他真核藻类（次生内共生）发展内共生关系获得质体。我们报告了一种原生生物，我们暂时称之为Hatena，它拥有一个内共生的绿藻伴侣，但继承它不均匀。内共生引起了共生体和寄主细胞结构的剧烈形态变化。在这种类型的生命周期中，内共生体的整合只是部分地将宿主从捕食者转变为自养者，这可能代表了通过次生共生获得质体的早期阶段。
Algae have acquired plastids by developing an endosymbiotic relationship with either a cyanobacterium (primary endosymbiosis) or other eukaryotic algae (secondary endosymbiosis). We report a protist, which we tentatively refer to as Hatena, that hosts an endosymbiotic green algal partner but inherits it unevenly. The endosymbiosis causes drastic morphological changes to both the symbiont and the host cell architecture. This type of life cycle, in which endosymbiont integration has only partially converted the host from predator to autotroph, may represent an early stage of plastid acquisition through secondary symbiosis.