Although reactive oxygen species (ROS) function in guard cell signaling has been demonstrated, the control of ROS homeostasis remains elusive. Recent findings point to multiple mechanisms controlling ROS levels in guard cells. These mechanisms require secondary metabolism and autophagy, providing the guard cells with a degree of plasticity during stomatal movements.

中文翻译：

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在ROS处进食以调节气孔开口。

尽管已经证明了活性氧（ROS）在保卫细胞信号传导中的功能，但对ROS稳态的控制仍然难以捉摸。最近的发现指向控制保卫细胞中ROS水平的多种机制。这些机制需要二次代谢和自噬，在气孔运动期间为保卫细胞提供一定程度的可塑性。