种群基因组学揭示了可转移元素变体与野生阿穆尔葡萄的气候适应相关性
Zhiyao Ma1,2,3,4,5, Xiaodong Xu1,2, Wenjing Peng1
1State Key Laboratory of Tropical Crop Breeding, Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.
Nature communications
|February 26, 2026
概括
阿穆尔葡萄是阿穆尔的葡萄.
科学领域:
- 植物基因组学 植物基因组学
- 适应气候变化 适应气候变化
- 农作物的野生亲属.
背景情况:
- 阿穆尔葡萄 (Vitis amurensis Rupr.) 是一种葡萄. 具有价值的寒冷耐受性特征,用于适应气候变化的作物育种.
- 了解野生亲属的遗传变异对于改善栽培品种至关重要.
研究的目的:
- 为阿穆尔葡萄构建一个图形 pangenome 引用.
- 识别与当地适应和气候适应性相关的遗传变异和适应性基因.
主要方法:
- 构建Vampan_V1.0图的泛基因组参考.
- 从31个自然种群中对330个阿穆尔葡萄样本进行了深度再测序.
- 识别短变体和与TE相关的结构变体 (TEV).
- 分析SNP在TEVs周围的积累和与环境变量相关的关系.
- 基于机器学习的基因偏移模型的应用.
主要成果:
- 创建了一个全面的变体地图,包含数百万个短变体和超过10万个TEV.
- 在TEVs周围观察到SNP的偏向积累,表明它们的结构影响.
- 确定了823个与环境变量相关的候选适应基因.
- 在未来的气候情景下,假定适应性TEV被证明可以显著减少遗传偏移 (7.38.2%).
结论:
- 图形基因组有效地解决复杂的遗传变异,包括TEVs.
- TEV在塑造阿穆尔葡萄的遗传多样性和当地适应性方面发挥着重要作用.
- TEVs有助于气候变化适应性,提供了利用野生亲属进行气候适应性作物育种的见解.
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