在玉米中使用多omics数据预测复杂的表型
bioRxiv : the preprint server for biology
|November 19, 2025
概括
整合多omics数据,包括基因组学,转录组学和现象学,显著改善了玉米复杂植物特征的预测. 这种方法增强了对基因型与环境相互作用的理解,并有助于育种应用.
科学领域:
- 植物基因组学和系统生物学
- 农业生物技术和育种.
背景情况:
- 由于复杂的遗传,监管和环境相互作用,预测复杂的植物特征具有挑战性.
- 准确的特征预测和遗传元素的识别对于植物育种,系统生物学和生物技术至关重要.
研究的目的:
- 评估多原子数据集 (基因组,转录组,现象组) 是否可以在多种环境中提高不同玉米表型的预测准确性.
- 为了比较线性 (rrBLUP) 和非线性 (支持向量回归) 模型的性能,使用单个和多个omics输入.
主要方法:
- 利用基因组标记物,现场转录基因组数据和无人机衍生的现象数据,对9个环境中的129种玉米表型进行了分析.
- 训练并比较使用单omics和集成多omics数据集的线性和非线性预测模型.
主要成果:
- 多omics模型始终优于单omics模型,基因组和转录基因组数据提供了独特的生物学见解.
- 现象数据单独显示出较低的预测能力,但对根架构等特定特征的预测有所改善.
- 转录组数据促进了准确的跨环境特征预测,并捕获了基因型对环境 (G×E) 相互作用.
结论:
- 整合转录和现象数据与基因型显著提高了玉米特征预测和跨环境的模型概括性.
- 这种多学科的方法为农业重要植物特征的遗传和监管架构提供了更深入的见解.
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