远红光丰富影响了米的基因表达和结构,以及生长和光合作用
Martina Huber1, Hugo Jan de Boer2, Andrés Romanowski1,3
1Plant-Environment Signalling, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands.
Plant, cell & environment
|April 17, 2024
概括
远红色光子 (FR) 增强植物的光合作用和生物质积累,特别是在白天应用时. 然而,作为一天结束的脉冲应用的FR光会触发避阴反应,而不是促进生长.
科学领域:
- 植物生理学 植物生理学
- 摄影生物学 摄影生物学
- 农业科学 农业科学
背景情况:
- 植物利用光 (400-700 nm) 进行光合作用和远红色光子 (FR,700-800 nm) 作为避免阴影的信号.
- 对于FR光子在信号传递和可能对光合作用作出贡献的双重作用,目前尚不完全理解.
研究的目的:
- 为了研究在光周期期间补充FR光对大米芽架构和光合作用的影响.
- 了解FR光照的时间如何影响植物的反应.
主要方法:
- 研究了在光周期中暴露于补充FR光的米品种的射击-建筑和光合作用反应.
- 将连续FR丰富与一天结束的FR脉冲进行了比较.
- 分析了转录组,叶子形成,耕作,生物质和二氧化碳固定.
主要成果:
- 在光周期期间补充FR光对大米转录组和芽架构有轻微影响,但显著促进了叶子形成,耕作和生物质.
- 在补充FR的情况下,二氧化碳固定得到了强烈的增强,特别是在FR适应的工厂.
- 一天结束时的FR脉冲引发了避免阴影的反应,否定了光合作用的好处.
结论:
- FR光子作为一个强大的能量来源,促进生长和光合作用,当在光周期期间连续应用时.
- 植物对FR光的反应取决于环境,连续FR促进生长,脉冲FR触发避免阴影.
- FR灯具有双重作用:环境信号和可收获能源的来源.
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