Jty. Wong et Yh. Wong, INDOLEAMINE-INDUCED ENCYSTMENT IN DINOFLAGELLATES, Journal of the Marine Biological Association of the United Kingdom, 74(2), 1994, pp. 467-469
Six species of dinoflagellates were investigated for their responsiven
ess to the indoleamine melatonin (and its homologue 5-methoxytryptamin
e), the vertebrate hormone for circadian rhythm regulation. Five speci
es were observed forming pellicle cysts in response to 5-methoxytrypta
mine at concentrations around 10(-6) M. Cells of Oxyrrhis marina were
observed retracting from the theca, part of the responsive pathway to
indoleamine, but the resulting naked cells were unable to form a new c
ell wall and lysed.