Two teosintes made modern maize
Two teosintes made modern maize
复制标题
DOI：
10.1126/science.adg8940
复制
发表时间：
2023-12-01
期刊：
影响因子：
56.9
通讯作者：
Ross-Ibarra，Jeffrey
中科院分区：
文献类型：
--
作者：
Yang，Ning;Wang，Yuebin;Ross-Ibarra，Jeffrey
玉米的起源是近一个世纪以来激烈争论的话题，但目前的遗传模型和早期的考古模型都不能解释现有数据的全部，最近的工作强调了一种野生近亲玉米的潜在贡献，墨西哥玉米。我们的群体遗传分析表明，现代玉米的起源可以追溯到古代玉米和玉米之间的混合。在驯化开始后大约4000年出现在墨西哥高地。我们发现，无论是在个体位点还是在农艺性状基础上的加性遗传变异上，外加剂的变异都是玉米多样性的关键组成部分。我们的研究结果澄清了现代玉米的起源，并提出了关于在整个美洲扩散的人为机制的新问题。
The origins of maize were the topic of vigorous debate for nearly a century, but neither the current genetic model nor earlier archaeological models account for the totality of available data, and recent work has highlighted the potential contribution of a wild relative,Zea maysssp.mexicana. Our population genetic analysis reveals that the origin of modern maize can be traced to an admixture between ancient maize andZea maysssp.mexicanain the highlands of Mexico some 4000 years after domestication began. We show that variation in admixture is a key component of maize diversity, both at individual loci and for additive genetic variation underlying agronomic traits. Our results clarify the origin of modern maize and raise new questions about the anthropogenic mechanisms underlying dispersal throughout the Americas.