西元15世纪的玻利维亚玉米揭示了与古秘鲁玉米的遗传亲和关系
Huan Chen1,2,3, Amy Baetsen-Young4, Addie Thompson1,3,4,5,6
1Genetics and Genome Sciences Program, Michigan State University, East Lansing, United States.
eLife
|November 18, 2025
概括
古玻利维亚玉米 (aBM) 基因组揭示了有针对性的育种策略,以提高种子质量和产量. 这种生物文化分析将遗传特征与15世纪古代农业传统中的文化选择联系起来.
科学领域:
- 考古遗传学 考古遗传学
- 生物文化人类学
- 古代DNA分析 古代DNA分析
背景情况:
- 文化和政治系统对食物获取和偏好有很大的影响.
- 生物文化分析将基因型/表型特征与古代环境中的文化选择联系起来是有限的.
- 古代玉米 (Zea mays) 为研究人类和作物的共同进化提供了一个有价值的模型.
研究的目的:
- 使用基因组数据对古玻利维亚玉米进行生物文化分析.
- 调查古代玉米中文化选择和有针对性的育种策略的证据.
- 将古代玉米的遗传多样性与现代样本和历史农业实践进行比较.
主要方法:
- 来自玻利维亚玉米 (大约500-600年前) 的古老基因组数据的遗传学分析.
- 与16个已发表的考古玉米样本 (跨越5000年) 和226个现代玉米样本进行比较.
- 在现代和考古玉米标本中分析卵子发育.
主要成果:
- 考古玻利维亚玉米 (aBM) 显示与考古秘鲁玉米最接近的遗传距离.
- 在印加国家与当地安第斯农业传统互动期间,玉米的遗传多样性增加了.
- 到15世纪,有证据表明有针对性的育种可以提高种子质量和产量,特别是在卵子发育方面.
结论:
- 古代玉米基因组为生物文化相互作用和人类选择压力提供了洞察力.
- 到15世纪,在安第斯山脉建立了提高玉米生长的有针对性的育种策略.
- 这项研究强调了玉米化的深远历史及其在安第斯地区的文化意义.
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