Open AccessMicrobial utilization of lipids in lake water
Author(s) -
Chróst Ryszard J.,
Gajewski Adam J.
Publication year - 1995
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1111/j.1574-6941.1995.tb00162.x
Subject(s) - biology , palmitic acid , eutrophication , pelagic zone , bacteria , plankton , lipase , heterotroph , ecology , trophic state index , zooplankton , metabolism , bacterioplankton , phytoplankton , environmental chemistry , biochemistry , fatty acid , nutrient , chemistry , enzyme , genetics
This report evaluates the importance of lipids as a source of substrates for metabolism of heterotrophic bacteria based on measurements of uptake of [ 3 H]palmitic acid and lipase activity in lakes of differing degrees of eutrophication. The highest rates of utilization of lipids by bacteria (i.e. specific and actual rates of uptake of [ 3 H]palmitic acid and specific lipase activity) were observed in pelagic water of mesotrophic lake where the highest concentration and the shortest turnover time of natural pool of palmitic acid was found. Lipids in highly eutrophicated lakes were less important for metabolism of aquatic bacterial communities. Lipid content in lake water depended on species composition of plankton in the studied lakes.