Trypanosomatid parasites are disease agents with an extraordinarily broad host range including humans, livestock and plants. Recent work has revealed that trypanosomatids harbour numerous genes sharing apparent common ancestry with plants and/or bacteria. Although there is no evidence of a plastid (chloroplast-like organelle) in trypanosomatids, the presence of such genes suggests lateral gene transfer from some photosynthetic organism(s) during trypanosomatid evolution. Remarkably, many products of these horizontally acquired genes now function in the glycosome, a highly modified peroxisome unique to trypanosomatids and their near relatives.

中文翻译：

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人类寄生虫中是否存在更多的质体？

锥虫病寄生虫是具有广泛宿主范围的疾病因子，包括人类，牲畜和植物。最近的研究表明锥虫具有许多与植物和/或细菌具有共同共同血统的基因。尽管在锥虫的体内没有质体（叶绿体样细胞器）的证据，但是此类基因的存在提示锥虫的进化过程中从某些光合生物进行了侧向基因转移。值得注意的是，这些水平获得的基因的许多产物现在都在糖体中起作用，该糖体是锥虫和其近亲独特的高度修饰的过氧化物酶体。