Not sure, but don't you need a neuron to have receptor sites? Plants do have dopamine. but I don't know their purpose, it's something to do with metabolism and protection from preditors.
Kuklin, A. & Conger, B. Catecholamines in plants. Journal of Plant Growth Regulation. Volume 14, Number 2, 91-97, DOI: 10.1007/BF00203119 Dopamine Functions as an Antiherbivore Defense in the Temperate Green Alga Ulvaria obscura Kathryn L. Van Alstyne, Amorah V. Nelson, James R. Vyvyan and Devon A. Cancilla Oecologia Vol. 148, No. 2 (Jun., 2006), pp. 304-311 <http://www.springerlink.com/content/?Author=A.+I.+Kuklin> Steven Hall Butte Community College [email protected] --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=8126 or send a blank email to leave-8126-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
