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首页> 外文期刊>Parasitology >Farming, slaving and enslavement: histories of endosymbioses during kinetoplastid evolution
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Farming, slaving and enslavement: histories of endosymbioses during kinetoplastid evolution

机译：农业，奴役和腹肌：血液塑料进化期间indosymbioss的历史

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摘要

Parasitic trypanosomatids diverged from free-living kinetoplastid ancestors several hundred million years ago. These parasites are relatively well known, due in part to several unusual cell biological and molecular traits and in part to the significance of a few – pathogenic Leishmania and Trypanosoma species – as aetiological agents of serious neglected tropical diseases. However, the majority of trypanosomatid biodiversity is represented by osmotrophic monoxenous parasites of insects. In two lineages, novymonads and strigomonads, osmotrophic lifestyles are supported by cytoplasmic endosymbionts, providing hosts with macromolecular precursors and vitamins. Here we discuss the two independent origins of endosymbiosis within trypanosomatids and subsequently different evolutionary trajectories that see entrainment vs tolerance of symbiont cell divisions cycles within those of the host. With the potential to inform on the transition to obligate parasitism in the trypanosomatids, interest in the biology and ecology of free-living, phagotrophic kinetoplastids is beginning to enjoy a renaissance. Thus, we take the opportunity to additionally consider the wider relevance of endosymbiosis during kinetoplastid evolution, including the indulged lifestyle and reductive evolution of basal kinetoplastid Perkinsela.
机译：寄生蛋白质酸酐从700万年前的自由活血滴血液中分歧。这些寄生虫是相对众所周知的，部分原因是几种不寻常的细胞生物学和分子性状，部分原因是少量致病的Leishmania和序蛋白酶瘤物种的意义 - 作为严重忽视的热带疾病的治疗剂。然而，大多数促葡萄质瘤病生物多样性由昆虫的血吸虫单雄性寄生虫代表。在两个谱系中，NovyMonads和Strigomonads，血液营养生活方式由细胞质内联核，提供具有大分子前体和维生素的宿主。在这里，我们讨论促蛋白酶体内的两种独立的胚胎异组起源，以及随后认为夹带与宿主内的Symbiont细胞部门循环的耐受性不同的进化轨迹。有可能通知过渡到促蛋白酶体中的寄生寄生，对自由生植物生物学和生态学的兴趣开始享有文艺复兴。因此，我们借此机会在KINETOPLOTID演化中另外考虑内联肌肤的更广泛的相关性，包括沉迷于基础KINETOPLASTID PERKINSELA的生活方式和还原演进。

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