Ability of Daphnia Cell-Free Extract to Damage Escherichia coli Cells
- 1 April 1983
- journal article
- research article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 45 (4) , 1242-1246
- https://doi.org/10.1128/aem.45.4.1242-1246.1983
Abstract
A cell-free extract of Daphnia magna was found to lyse Escherichia coli cells as shown by leakage of the enzymes alkaline phosphatase and β-galactosidase from the bacteria. The cell-free extract was separated on Sephadex G-200, and the fractions showing an ability to lyse E. coli cels were isolated. The factor which was responsible for the lysis of the bacterial cells was probably a protein with a molecular weight of several thousands. Mg 2+ and Ca 2+ ions augmented the activity of the Daphnia extract on E. coli cells.This publication has 17 references indexed in Scilit:
- Preferential feeding behaviour of Daphnia magnaHydrobiologia, 1982
- Transfer of radioactive carbon within the copepod Temora longicornisMarine Biology, 1980
- Bacteria as food for marine harpacticoid copepodsMarine Biology, 1978
- Alterations in Activity of Phosphatases during the Peridinium Bloom in Lake KinneretPhysiologia Plantarum, 1977
- Feeding of Daphnia on Chlamydomonas and ChlorobiumNature, 1977
- Studies on the intestine of Daphnidae (Crustacea, Cladocera) ultrastructure of the midgut of Daphnia magna and Daphnia obtusaJournal of Morphology, 1976
- The use of the Coulter Counter for measuring the feeding rates of daphnia magnaHydrobiologia, 1976
- Zooplankton Feeding on Differentially Labelled Algae and BacteriaNature, 1974
- Selective Grazing and Differential Digestion of Algae by ZooplanktonNature, 1973
- PROTEIN MEASUREMENT WITH THE FOLIN PHENOL REAGENTJournal of Biological Chemistry, 1951