Plasmodium ouropretensis , n. sp., a new case of non-erythrocytic species within lizard malaria parasites
Plasmodium ouropretensis , n. sp., a new case of non-erythrocytic species within lizard malaria parasites
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疟原虫ouropretensis，n。
DOI：
10.1017/s0031182021000895
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发表时间：
2021
期刊：
影响因子：
2.4
通讯作者：
Braga, Érika Martins
中科院分区：
文献类型：
--
作者：
Córdoba, Oscar Hernandes;Ferreira, Francisco C.;Pacheco, M. Andreína;Escalante, Ananias A.;Braga, Érika Martins
在血孢子虫分类学中，疟原虫的种类划分和描述一直是一个亟待解决的问题。所使用的少数形态特征可以重叠，并且一些生活史特征的意义尚未完全理解。据报道，形态上相同的蜥蜴疟原虫感染同一宿主的不同细胞类型（红细胞和白色血细胞），并被认为是同一物种。一个例子是热带疟原虫（Plasmodium tropiduri tropiduri），一种已知感染红细胞、血小板和淋巴细胞样细胞的物种。在这里，两种形式的P. T。使用光学显微镜为基础的形态特征和系统发育推断的基础上几乎完整的线粒体基因组的寄生虫自然感染蜥蜴在巴西东南部进行了分析。虽然形态相似，但发现红细胞和非红细胞中存在两种不同的系统发育谱系，红细胞中发现的谱系与哥伦比亚种形成单系群。然而，非红细胞谱系与白细胞疟原虫（Plasmodium leucocytica）有着最近的共同祖先，后者感染来自加勒比群岛的蜥蜴的白细胞。在这里，疟原虫ouropretensisn。被描述为感染血小板和淋巴细胞样细胞的物种。
Delimiting and describing Plasmodium species in reptiles remains a pressing problem in Haemosporida taxonomy. The few morphological characters used can overlap, and the significance of some life-history traits is not fully understood. Morphologically identical lizard Plasmodium forms have been reported infecting different cell types (red and white blood cells) in the same host and have been considered the same species. An example is Plasmodium tropiduri tropiduri, a species known to infect erythrocytes, thrombocytes and lymphocyte-like cells. Here, both forms of P. t. tropiduri were analysed using light microscope-based morphological characteristics and phylogenetic inferences based on almost complete mitochondrial genomes of parasites naturally infecting lizards in southeastern Brazil. Although morphologically similar, two distinct phylogenetic lineages infecting erythrocytes and non-erythrocytic cells were found. The lineage found in the erythrocytes forms a monophyletic group with species from Colombia. However, the non-erythrocytic lineage shares a recent common ancestor with Plasmodium leucocytica, which infects leucocytes in lizards from the Caribbean islands. Here, Plasmodium ouropretensis n. sp. is described as a species that infects thrombocytes and lymphocyte-like cells.