使用小数据集的深度学习预测了染色体重塑对果尾芽冬季休眠的贡献
Takanori Saito1, Shanshan Wang1, Katsuya Ohkawa1
1Graduate School of Horticulture, Chiba University, Matsudo 271-8510, Japan.
Tree physiology
|June 21, 2024
概括
植物利用表观遗传变化作为细胞记忆来识别寒冷,影响芽休眠. 这项研究揭示了染色体结构动力学和冷驱动路径如何调节这一过程,为气候适应性育种提供了目标.
科学领域:
- 植物生物学 植物生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
背景情况:
- 众所周知,表观遗传修饰,特别是基因组标记,可以调节细胞对环境线索的记忆,例如暴露在寒冷中,从而影响植物发育过程,例如芽休眠.
- 以前的研究主要集中在预测的染色质结构上,因此需要对真实的染色质动态进行研究,以更清楚地理解冷识别.
研究的目的:
- 研究果 (Malus domestica) 芽休眠期初始阶段长时间冷却的反应中染色质的结构动力学.
- 阐明植物识别和记忆累积冷暴露用于休眠诱导的机制.
- 识别潜在的遗传点,以培育具有降低芽休眠期的气候适应性作物.
主要方法:
- 分析"富士果"植物尾芽的染色质结构和转录变化.
- 使用深度学习模型整合结果.
- 使用统计模型解释数据,包括贝叶斯估计.
主要成果:
- 由于随机变化的染色体重塑被排除在外,专注于特定的冷诱导结构动力学.
- 在核细胞结构变化和转录变化之间观察到强烈的相关性.
- 冰冷驱动的,依赖昼夜节律的通路,通过cis-regulatory元素的移动性来调节,被确定为休眠诱导的关键.
结论:
- 长时间暴露在寒冷中会诱导特定的染色质结构变化,这些变化与转录重编程有关,调解芽休眠.
- 这些发现突显了冷驱动的昼夜轨道和 cis-regulatory 元素的移动性在植物寒冷识别中的作用.
- 该研究提出了一种人工智能驱动的表观遗传分析方法,对非模型植物特别有用,并建议为适应气候变化的改变休眠期的繁殖品种提供目标.
关键词:
马卢斯 (Malus) × 家庭动物 (domestica)这是一个 cis-regulatory 元素.通过人工智能辅助的分析.布德休眠状态 休眠状态表观遗传学是指表观遗传学.微型菌核酶测序的测序方法更多相关视频
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