ISSN:
1550-7408
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
SYNOPSIS. Cysts of the hypotrichous ciliate Pleurotricha lanceolata were placed in dilute aqueous solutions of specific chemicals (carbohydrates, vitamins, L-amino acids, nucleic acids and derivatives, other organic acids and tweens) to assay the effectiveness of these chemicals as excysting agents. It was found that some of the amino acids, deoxyribonucleic acid, ribonucleic acid, and some other organic acids induce excystment at rates equal to or better than the control medium, 0.05% (w/v) aqueous lettuce extract. Preliminary experiments with chelating agents, tri- and tetra-sodium salts of ethylenediaminetetraacetic acid (Versenol 120 and Versene 100), indicate that they successfully initiate excystment, but support it inadequately thereafter so that most of the organisms die within the endocyst.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1550-7408.1962.tb02638.x
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