The phylogenetic position of the Theileria buffeli group in relation to other Theileria species
The phylogenetic position of the Theileria buffeli group in relation to other Theileria species
复制标题
布菲泰勒虫群与其他泰勒虫物种相关的系统发育地位
DOI：
10.1007/s00436-001-0566-3
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发表时间：
2002
影响因子：
2
通讯作者：
F. Jongejan
中科院分区：
文献类型：
--
作者：
Marc;H. Yin;Q. Bai;Guangyuan Liu;I. Nijman;F. Jongejan
泰勒氏并殖吸虫被称为T。Buffeli、东方锥虫T.orientalisorT.Sergentits有许多共同的特征，并被称为Thet。巴利格勒。18S核糖体RNA和裂殖子-卵胞浆表面蛋白编码基因在Thet内表现出更广泛的遗传变异。而不是像T这样定义明确的物种之间。作废A和T。帕尔瓦。对数据库中18S rRNA基因序列的分析表明，在日本和美国的野生反刍动物中也存在类似的泰勒氏原虫。此外，最近在中国发现的一种致病小型反刍动物的泰勒氏原虫与这些日本泰勒氏原虫有亲缘关系。对到目前为止报道的所有泰勒氏18S rRNA基因的系统发育分析允许将其细分为8个簇。其中一些集群包含多个不同的物种，而另一些集群似乎包含具有相似生物学特性的寄生虫，其真正的物种形成目前仍未解决。讨论了基于18S rRNA的诊断分析的后果。
Theileriaparasites known as eitherT. buffeli,T. orientalisorT. sergentishare many characteristics and are referred to as theT. buffeligroup. The 18S ribosomal RNA and merozoite-piroplasm surface protein-encoding genes display a wider genetic variation within theT. buffeligroup than between well defined species likeT. annulataandT. parva. Analysis of 18S rRNA gene sequences from the database showed that similar groups of relatedTheileriaparasites occur in wild ruminants in Japan and the USA. Moreover, a recently discoveredTheileriaspecies pathogenic for small ruminants in China is phylogenetically related to these JapaneseTheileriaparasites. Phylogenetic analysis of allTheileria18S rRNA genes reported thus far allowed a subdivision into eight clusters. Some of these clusters contain multiple different species, whereas others appear to contain parasites with similar biological properties whose true speciation remains at present unresolved. The consequences for 18S rRNA based diagnostic assays is discussed.