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Caenorhabditis elegans and Panagrellus redivivus: enzyme-mediated modification of chemotaxis

Caenorhabditis elegans and Panagrellus redivivus: enzyme-mediated modification of chemotaxis

Experimental Parasitology, 583: 270-277

Treatment with mannosidase or sialidase (2 U/ml) completely inhibited the chemotactic responses of C. elegans wild type, C. elegans mutants CB1377 (daf-6)X and CB1379 (che-3)I and P. redivivus to Escherichia coli filtrate for 2 h. During the 2 to 14 h interval following exposure to mannosidase or sialidase the nematodes gradually resumed a normal response to the chemoattractant, until at 20 h the chemotaxis response was normal. At 0.5 U mannosidase or sialidase, chemotaxis was normal. Treatment with trypsin resulted in a partial inhibition of chemotaxis and a resumption of normal chemotaxis between 5 and 8 h after treatment. Glucosidase, galactosidase, fucose dehydrogenase, hyaluronidase and glucuronidase did not affect chemotaxis. It is suggested that the behavioural modifications resulted from functional impairments to receptors located within the chemosensory papillae.

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Accession: 001311441

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PMID: 6500000

DOI: 10.1016/0014-4894(84)90044-4

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