Do Plants cry? Do plants have a centralized mechanism to notify them that something is wrong? The central alarm system in children can be set off by a number of different stimuli. Do plants have a similar universal response, set off by a variety of trauma, to notify them that they have been subjected to some kind of environmental insult? A variety of stimuli mechanical, chemical, disease, thermal, and irradiation are known to cause the production of "wound" ethylene. Is it possible that a gas can take the place of tears, and if so: what function do these "tears" serve?
Source: • What's New in Plant Physiology
Keywords: Ethylene Streptomyces Trauma