STUDIES ON CULTURAL CONDITIONS OF MARINE CHROMATIUM BRUDERI TRUPER AND JANNASCH 1968
STUDIES ON CULTURAL CONDITIONS OF MARINE CHROMATIUM BRUDERI TRUPER AND JANNASCH 1968
Date
1988
Authors
DHEVENDARAN, K
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India) Cochin
Abstract
Photosynthetic characteristics of a purple sulfur bacterium, Chromataun buderi,
cultured under different ranges of pH, temperature, light intensities and ammonium
chloride concentrations were examined. Maximum bacteriochlorophyll a synthesis
was observed at pH 6.5 whereas the optimum growth was at pH 8.0. In general, higher
temperature tended to inhibit the chlorophyll a synthesis and growth. 30°C is the optimum
temperature both for chlorophyll a synthesis and growth. At 25 tIE m —25 the
bacteriochlorophyll a content and growth attained maximum level. The response to
this low light intensity is an adaptation that ensure a high photosynthetic rate for the
purple sulfur bacterium that usually occurs in dimly lit environment. Besides these,
ammonium chloride at low concentration enhances both chlorophyll a sy thesis and
growth. Above 0.5 % of it cause the nitrogen-chlorosis and also retard the growth of
the bacterium. Possible chemical and structural mechanisms involved are discussed.
Description
Keywords
CULTURAL CONDITIONS,MARINE CHROMATIUM BRUDERI TRUPER,JANNASCH ,1968
Citation
Fishery Tech 25(2):87-91