进化和动态转录组的关键基因的光周期开花路径在水菜 (水生菜) (Ipomoea aquatica)
Xin Wang1,2,3, Yuanyuan Hao1,2,3, Muhammad Ahsan Altaf1,2,3
1Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China.
International journal of molecular sciences
|February 10, 2024
概括
水花的开花是由光周期控制的. 这项研究揭示了关键的开花时间基因中的基因拷贝数变异和表达差异,为水提供了对水的洞察力.
科学领域:
- 植物分子生物学和遗传学.
- 植物发展的环境监管.
背景情况:
- 光周期是一个关键的环境提示,调节植物的开花时间.
- 水 (Ipomoea aquatica) 在短日条件下开花会降低产量和质量,使其监管对农业至关重要.
研究的目的:
- 阐明了水中依赖光周期的开花时间调节背后的分子机制.
- 为了确定关键的基因和途径参与控制开花,以响应光线持续时间.
主要方法:
- 在八个时间点的长日和短日条件下,水的转录组测序.
- 分析与昼夜节律相关的基因,光周期通路基因 (GI,FT,CO) 和转录因子.
- 权重基因共同表达网络分析 (WGCNA).
主要成果:
- 鉴定了数千个与昼夜节律相关的基因,在长日和短日条件下差异地表达.
- 观察到关键昼夜基因 (IaCCA1,IaLHY,IaTOC1) 的保留反模式,但 IaGI 和 IaFT 基因的基因重复和功能差异.
- 发现IaFT1的表达高度响应光周期和昼夜节律,其抑制可能会在长日条件下阻止开花. 与相关物种相比,水菜也有较少的CO基因成员.
结论:
- 这项研究揭示了水的显著基因重复和光周期通路基因 (GI,FT,CO) 的分歧,这有助于其独特的开花反应.
- 保存的昼夜钟基因和IaFT1的特定表达模式是调节开花时间的关键因素.
- 这项研究为了解水菜和更广泛的Ipomoea属的开花时间控制提供了有价值的基因组资源.
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