Scholarlink

<p>Maize (<i>Zea mays</i> L.) is the most recently domesticated and dispersed worldwide among major cereals. Chloroplast genomes (plastome), with their highly conserved tetrad structure, hold a significant value in phylogenetic research due to their typical maternal inheritance. In this study, a total of 286 maize plastomes, 262 newly assembled and 24 publicly available, were investigated which included worldwide landraces, nested association mapping founders, and teosinte accessions. The maize plastomes were assembled with the filtered reads of the whole genome sequences from our re-seq data and public database by mapping to the reference plastome of B73. The maize plastomes were put into the phylogenetic analyses, with <i>Z. perennis</i> accession as the outgroup. The maize landraces were divided into four clades, showing a closer relationship with the <i>Z. mays</i> ssp. <i>parviglumis</i> plastome than with <i>mexicana</i>, indicating that <i>parviglumis</i> was the direct donor of the plastome to maize. Landrace diversities in Europe were quite similar to those in China and the Korean Peninsula, suggesting that the dispersal of maize following European contact with America was both rapid and accompanied by the translocation of a broad spectrum of maize germplasm. The introduced landraces have less diversity than the old landraces found in South America. This study provides information for understanding the genetic diversity of maize landraces and the process of maize dispersal in the world for exploiting the maize germplasm in breeding.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Tracing the global spread of maize (Zea mays L.) through plastome analysis of landraces

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月28日

查看全文
  • Jin Seong Park,
  • Seongmin Hong,
  • Jiyun Go,
  • Myeong-Geon Seok,
  • Hobin Lee,
  • Gibum Yi

摘要

Maize (Zea mays L.) is the most recently domesticated and dispersed worldwide among major cereals. Chloroplast genomes (plastome), with their highly conserved tetrad structure, hold a significant value in phylogenetic research due to their typical maternal inheritance. In this study, a total of 286 maize plastomes, 262 newly assembled and 24 publicly available, were investigated which included worldwide landraces, nested association mapping founders, and teosinte accessions. The maize plastomes were assembled with the filtered reads of the whole genome sequences from our re-seq data and public database by mapping to the reference plastome of B73. The maize plastomes were put into the phylogenetic analyses, with Z. perennis accession as the outgroup. The maize landraces were divided into four clades, showing a closer relationship with the Z. mays ssp. parviglumis plastome than with mexicana, indicating that parviglumis was the direct donor of the plastome to maize. Landrace diversities in Europe were quite similar to those in China and the Korean Peninsula, suggesting that the dispersal of maize following European contact with America was both rapid and accompanied by the translocation of a broad spectrum of maize germplasm. The introduced landraces have less diversity than the old landraces found in South America. This study provides information for understanding the genetic diversity of maize landraces and the process of maize dispersal in the world for exploiting the maize germplasm in breeding.