一个主要的真菌病原体的全球集合中的热适应
Silvia Miñana-Posada1, Cécile Lorrain1, Bruce A McDonald1
1Plant Pathology Group, Institute of Integrative Biology, ETH Zürich, Zürich, Switzerland.
Molecular plant-microbe interactions : MPMI
|January 6, 2025
概括
小麦病原体Zymoseptoria tritici在全球范围内表现出局部热适应,在野外种群中具有显著的遗传变异. 由于其复杂的多基因热适应,预计这种病原体很容易适应气候变化.
科学领域:
- 植物病理学 植物病理学
- 进化生物学是进化的生物学.
- 适应气候变化 适应气候变化
背景情况:
- 植物病原体在扩展范围期间面临适应新气候的挑战.
- 一种小麦病原体Zymoseptoria tritici在不同气候区广泛分布.
- 了解病原体的气候反应对于预测疾病爆发至关重要.
研究的目的:
- 为了研究Zymoseptoria tritici.热适应的遗传基础.
- 评估Zymoseptoria tritici适应气候变化的潜力.
主要方法:
- 现型 411 个全球 Zymoseptoria tritici 菌株在不同温度.
- 进行了全基因组关联研究 (GWAS),以确定与热适应相关的基因.
- 与最佳生长温度相关的生物气候变量.
主要成果:
- 全球Zymoseptoria tritici种群的局部热适应的证据.
- 生物气候变量与最佳生长温度之间存在显著的正相关性.
- 现场种群中的高热性能变性,表明具有高的进化潜力.
- 确定了69个可能参与热适应的基因,包括一个适应寒冷的候选基因.
结论:
- 在Zymoseptoria tritici的热适应是复杂的和多基因的.
- 该病原体具有高度适应气候变化的能力.
- 当地适应和高的人口内部变异性增强了适应潜力.
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