The capacity of plants to survive depends on their ability to sense and respond to the light environment. Besides serving as an energy source driving photosynthesis, light is also an external indicator of proximity with competitors, seasonality, and positional cues. Thus, it is not surprising that plants evolved sophisticated mechanisms to perceive subtle variations in light conditions (Chen et al., 2004).

中文翻译：

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在光致反应中四处移动：NPH3 的磷酸化

植物的生存能力取决于它们感知和响应光环境的能力。除了作为驱动光合作用的能源外，光也是与竞争对手接近、季节性和位置线索的外部指标。因此，植物进化出复杂的机制来感知光照条件的细微变化也就不足为奇了（Chen et al., 2004）。