phytochrome

例句：

1. 1.The plant's ability to sense light is mediated by phytochromes.
   这种植物感知光线的能力是通过光敏色素实现的。
2. 2. In the dark, phytochromes are activated and cause the plant to bend towards the light.
   在黑暗中，光敏色素被激活，导致植物向光源弯曲。
3. 3.Phytochromes play a crucial role in controlling plant growth and development.
   光敏色素在控制植物生长和发育方面起着至关重要的作用。