EPISODE · Jun 25, 2026 · 20 MIN
1185-芸薹属 A 基因组演化历史与自交不亲和性研究
from 聊聊Sci
这项研究通过对3,330份芸苔属A基因组样本的深度分析，揭示了白菜（B. rapa）及其演化后代的遗传奥秘。研究团队构建了泛嵌块（pan-blocks）图谱，确认了该物种起源于中亚与西亚，并随后通过三条主要路径扩散至整个欧亚大陆。通过对基因倒位现象的追踪，科学家们理清了油菜与芥菜中A亚基因组的差异化起源。此外，该研究还破解了自交不亲和（S-locus）位点的高度复杂性，发现转座子条形码是维持其遗传多样性的关键。这些成果为芸苔属作物的驯化历史提供了关键见解，并为未来的育种工作奠定了坚实的基础。References:Cai X, Zhang Z, Zhang L, et al. Genomic analysis of 3,330 accessions provides insights into the evolutionary history and self-incompatibility locus of the Brassica A genome[J]. Nature Genetics, 2026: 1-9.前往小宇宙评论区与主播互动
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1185-芸薹属 A 基因组演化历史与自交不亲和性研究
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