ORIGINAL RESEARCH
Physiological Properties and Taxonomy of Epiphytic
Bacteria in Chełmżyńskie Lake in Poland
E. Lalke-Porczyk 1, W. Donderski 1*, M. Małecka 2
1 Department of Environmental Microbiology and Biotechnology, Institute of Ecology and Environment Protection,
Nicolas Copernicus University, ul. Gagarina 9, 87-100 Toruń, Poland
2Laboratory of Microbiology, Bydgoszcz Academy of Kazimierz Wielki, Chodkiewicza 30, 85-064 Bydgoszcz, Poland
Nicolas Copernicus University, ul. Gagarina 9, 87-100 Toruń, Poland
2Laboratory of Microbiology, Bydgoszcz Academy of Kazimierz Wielki, Chodkiewicza 30, 85-064 Bydgoszcz, Poland
Pol. J. Environ. Stud. 2004;13(5):543–549
KEYWORDS
ABSTRACT
Research was carried out on the number of heterotrophic bacteria inhabiting the surface of macrophytes
submerged in water that are dominant in the littoral zone of Chełmżyńskie Lake: common reed, cattail and
hornwort. Bacteria were identified and their ability to decompose certain biopolimers was determined. It
was found that the number of bacteria growing on helophytes, i.e. common reed and bulrush, increased
from spring to summer, and then decreased in autumn. On the surface of hornwort the number of heterotrophic
bacteria increased throughout the whole vegetative season, reaching its maximum in autumn. From
among all of the isolated strains, lipo-, cellulo- and proteolytic bacteria were dominant. Strains isolated
from the surface of cattail were characterized by the potentially highest physiological activity. The generic
composition of the isolated strains changed with the development of the macrophytes (season) and depended
on the species of plant.
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