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首页> 外文期刊>Parasitology >Geographical patterns of Toxoplasma gondii genetic diversity revealed by multilocus PCR-RFLP genotyping.
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Geographical patterns of Toxoplasma gondii genetic diversity revealed by multilocus PCR-RFLP genotyping.

机译：多位点PCR-RFLP基因分型揭示了弓形虫遗传多样性的地理格局。

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摘要

In recent years, an extensive collection of Toxoplasma gondii samples have been typed using a set of 10 PCR-RFLP genetic markers. Here we summarize the data reported until the end of 2012. A total of 1457 samples were typed into 189 genotypes. Overall, only a few genotypes dominate in the northern hemisphere, which is in stark contrast to the southern hemisphere where hundreds of genotypes coexist with none being notably dominant. PCR-RFLP genotype #1 (Type II clonal), #2 (Type III), #3 (Type II variant) and #10 (Type I) are identified globally. Genotypes #2 and #3 dominate in Africa, genotypes #9 (Chinese 1) and #10 are prevalent in Asia, genotypes #1, #2 and #3 are prevalent in Europe, genotypes #1, #2, #3, #4 and #5 dominate in North America (#4 and #5 are collectively known as Type 12). In Central and South America, there is no clear dominance of any genotype even though a few have relatively higher frequencies. Statistical analysis indicates significant differences among populations in Africa, Asia, Europe, North America, and Central and South America, with only Europe and North America exhibiting similar diversity. Collectively, the results revealed distinct population structures and geographical patterns of diversity in T. gondii.
机译：近年来，已使用一组10种PCR-RFLP遗传标记对弓形虫样品进行了广泛的分类。在这里，我们总结了截至2012年底报告的数据。总共将1457个样本分为189个基因型。总体而言，北半球只有少数基因型占主导地位，这与南半球形成鲜明对比的是，南半球共存数百种基因型，而没有显着优势。 PCR-RFLP基因型＃1（II型克隆），＃2（III型），＃3（II型变体）和＃10（I型）已全面鉴定。基因型＃2和＃3在非洲占主导地位，基因型＃9（中文1）和＃10在亚洲盛行，基因型＃1，＃2和＃3在欧洲盛行，基因型＃1，＃2，＃3，＃ 4和＃5在北美占主导地位（＃4和＃5统称为Type 12）。在中美洲和南美洲，尽管有些基因型的频率相对较高，但没有明显的基因型优势。统计分析表明，非洲，亚洲，欧洲，北美洲以及中南美洲的人口之间存在显着差异，只有欧洲和北美表现出相似的多样性。总体而言，结果揭示了刚地弓形虫的独特种群结构和多样性的地理格局。

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