The movement of plants. Dissemination 112th
The leaves of Erythrina crista-galli daily perform a phenomenon known as "nyctinasty"
The leaves of Erythrina crista-galli, a tree belonging to the order of the Fabales, family of the fabaceae, daily perform a phenomenon known as "nyctinasty" which consists of folding its leaves on the trunk at night and deploy them at dawn, as can be seen in the attached photos.
This movement is performed by the action of specialized motor cells, existing in the petiole of each leaf from the first day of its appearance.
There are two hypotheses about the origin of this movement:
1) The production of proteins called aquaporins, which act by redistributing the water in the petiole.
2) Osmotic changes in the extensor and flexor cells of the petiole pulvinum, influenced by light stimuli. Therefore, movements affected by circadian cycles are considered.
This phenomenon is another proof of the previous existence of a genetic code, which responds to a specific stimulus.