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ANALYSIS ON PIGMENTS IN GREEN SULFUR BACTERIA WITH HIGH PERFORMANCE LIQUID CHROMATOGRAPHY AND THE APPLICATION
Author(s): 
Pages: 1001-1009
Year: Issue:  5
Journal: Oceanologia et Limnologia Sinica

Keyword:  green sulfur bacteriabacteriochlorophyllisorenieratenehigh performance liquid chromatographyanoxiahypoxia;
Abstract: Diagnostic pigments of green sulfur bacteria(GSB), such as bacterialchrolophyll d, bacterialchrolophyll e, chlorobactene, isorenieratene, etc, can be used as biomarkers to study anoxic events in a euphotic zone and changes of aquatic ecosystems under anoxic condition. In this study, two representative GSB species, Chlorobium phaeovibrioides(DSM269, brown-colored strain) and Prosthecochloris vibrioformis(DSM260, green-colored strain) were cultured, and their pigments were analyzed in high performance liquid chromatography. Bacterialchrolophyll d was detected from strain DSM 260, and bacterialchrolophyll e and isorenieratene were detected from DSM 269. The retention time and characteristic adsorption spectra were recorded for these pigments. For application, surface sediment samples collected from the sea area south of the Changjiang River mouth, where seasonal hypoxia in the last decade was reported, were analyzed. However, no GSB pigments could be detected. Considering the deteriorating trend of seasonal hypoxia in the sampling region, GSB pigments can be applied as an index to the hypoxia in this region.
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