Plant perception (physiology)

Plant perception is the ability of plants to sense and respond to the environment to adjust their morphology, physiology, and phenotype accordingly. Other disciplines such as plant physiology, ecology and molecular biology are used to assess this ability. Plants react to chemicals, gravity, light, moisture, infections, temperature, oxygen and carbon dioxide concentrations, parasite infestation, disease, physical disruption, sound, and touch.

Arabidopsis thaliana can perceive magnetic fields using . Displacement can also be detected by plants.Poplar stems can detect reorientation and inclination (equilibrioception).

Wounded tomatoes are known to produce the volatile odour methyl-jasmonate as an alarm signal. Neighbouring plants can then detect the chemical and prepare for the attack by producing chemicals that defend against insects or attract predators.

Plants systematically use hormonal signalling pathways to coordinate their own development and morphology.

Plants produce several proteins found in the animal neuron systems such as acetylcholine esterase, glutamate receptors, GABA receptors, and endocannabinoid signaling components. They also use ATP, NO, and ROS like animals for signaling.

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