Bacterial community in the intestine of the sea urchin Strongylocentrotus intermedius during digestion of Macrocystis pyrifera
2014
Zhang, Fan | Tian, Yi | Gao, Feng | Chen, Shulin | Li, Demao | Zhou, Yuxia
Denaturing gradient gel electrophoresis (DGGE) was used to study the bacterial community changes in the intestine of the sea urchin Strongylocentrotus intermedius during the digestion of Macrocystis pyrifera . The distinct bands in DGGE gels were sequenced, and the results indicated that the bacterial community in the large and small intestine varied at different periods of digestion. Samples from the large intestine included six specific bands belonging to the genus Psychromonas , whereas samples from the small intestine included eight specific bands representing Psychromonas , Shewanella , Saccharophagus degradans , and Nitrosomonas eutropha . The bacterial flora differed at different periods of digestion. The increase in the microbial community species in the large intestine was not obvious compared with that in the small intestinal microbial community. Several microbes involved in degradation of M. pyrifera were found in the intestine of sea urchin.
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