南安第斯山脉古代线粒体DNA的新证据(Calchaquí山谷,阿根廷西北部,距今3600 - 1900年)。

4区 生物学 Q2 Medicine
María Laura Parolin, Leticia Inés Cortés, Néstor Basso, María Cristina Scattolin
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引用次数: 2

摘要

在过去十年中,对南安第斯山脉前西班牙裔人口的遗传研究一直在稳步增加。然而,形成时期考古人类遗骸的古代DNA特征尤其缺乏,特别是在阿根廷西北部。为了扩大目前关于Calchaquí南部山谷第一个农业群落遗传特征的信息,我们提出并讨论了从卡塔马卡省Cajón山谷的样品中获得的第一个线粒体古代DNA信息,这些样品的历史可追溯到距今约3600 - 1900年。在7个个体中获得了可重复的mtDNA高变区1 (HVR-1)序列。线粒体HVR-1单倍型被分配到四个创始单倍群中的三个,D1 (57.1%), C1(28.5%)和B2 (14.2%), A2缺失。我们的研究结果表明,Cajón山谷样本以D1和C1为主,不同于通常在古代和现代安第斯人群中观察到的单倍群B2的高流行率。Cajón山谷和Pampa Grande(阿根廷萨尔塔省)共有D1单倍群,这一事实可以提供额外的证据,支持在阿根廷西北部形成时期山谷和东部次安第斯地区之间可能存在的遗传亲缘关系,扩大了两个种群之间接触的考古证据。未来完整的有丝分裂基因组分析将提供大量信息,以形成关于Cajón山谷个体与安第斯山脉、大查科和亚马逊地区其他群体之间起源和系统发育关系的新假设。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New Evidence of Ancient Mitochondrial DNA of the Southern Andes (Calchaquí Valleys, Northwest Argentina, 3,600-1,900 Years before Present).

Genetic studies on pre-Hispanic populations of the Southern Andes have been increasing steadily in the last decade. Nevertheless, ancient DNA characterization of Formative Period archaeological human remains is particularly scant, especially for Northwest Argentina. To expand current information on genetic characterization of the first agricultural communities of the southern Calchaquí Valleys, we present and discuss the first mitochondrial ancient DNA information obtained on samples dated to ca. 3,600-1,900 years before present from the Cajón Valley, Catamarca Province. Reproducible mtDNA hypervariable region 1 (HVR-1) sequences were obtained in seven individuals. Mitochondrial HVR-1 haplotypes were assigned to three of the four founding haplogroups, D1 (57.1%), C1 (28.5%), and B2 (14.2%), with absence of A2. Our results show that the Cajón Valley sample, with predominance of D1 and C1, differs from that commonly observed in ancient and modern Andean populations, which usually show a high prevalence of haplogroup B2. The fact that the Cajón Valley and Pampa Grande (Salta Province, Argentina) share a prevalence of haplogroup D1 could provide additional evidence to support possible genetic affinities between the valleys and the eastern sub-Andean region during the Formative Period in Northwest Argentina, expanding the archaeological evidence of contact between both populations. Future complete mitogenomic analysis will provide substantial information to formulate new hypotheses about the origins and phylogenetic relationships between the individuals of the Cajón Valley and other groups from the Andes, Gran Chaco, and the Amazon.

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来源期刊
Human Biology
Human Biology 生物-生物学
CiteScore
1.90
自引率
0.00%
发文量
88
审稿时长
>12 weeks
期刊介绍: Human Biology publishes original scientific articles, brief communications, letters to the editor, and review articles on the general topic of biological anthropology. Our main focus is understanding human biological variation and human evolution through a broad range of approaches. We encourage investigators to submit any study on human biological diversity presented from an evolutionary or adaptive perspective. Priority will be given to interdisciplinary studies that seek to better explain the interaction between cultural processes and biological processes in our evolution. Methodological papers are also encouraged. Any computational approach intended to summarize cultural variation is encouraged. Studies that are essentially descriptive or concern only a limited geographic area are acceptable only when they have a wider relevance to understanding human biological variation. Manuscripts may cover any of the following disciplines, once the anthropological focus is apparent: human population genetics, evolutionary and genetic demography, quantitative genetics, evolutionary biology, ancient DNA studies, biological diversity interpreted in terms of adaptation (biometry, physical anthropology), and interdisciplinary research linking biological and cultural diversity (inferred from linguistic variability, ethnological diversity, archaeological evidence, etc.).
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