@article{oai:oacis.repo.nii.ac.jp:00002380, author = {Yang, Taehui and Yamada, Katsuhisa and Nakayama, Jiro and Igarashi, Yasuhiro and Terahara, Takeshi and Kobayashi, Takeshi and Imada, Chiaki}, issue = {3}, journal = {海洋深層水研究, Deep Ocean Water Research}, month = {}, note = {Until recent years, marine bacterial researches have been conducted mainly on surface seawater (SSW) and marine sediment, but only few studies have been undertaken on deep-sea water (DSW). Therefore, in this study, bacterial community structures of DSW and SSW collected from seven DSW pumping stations in Japan were investigated by molecular biological techniques using a 454 FLX sequencer. The result of pyrosequencing analysis showed that the bacterial diversity of DSW was considerably higher than that of SSW as we studied before. The proportions of several phyla (Actinobacteria, Chloroexi, Gemmatimonadetes, and SAR046) in DSW were higher than those in SSW. In addition, principal coordinates analysis (PCoA) based on the pyrosequencing data showed that DSW samples tended to form clusters separated from those of SSW samples. These results indicate that the bacterial community structure of DSW is dierent from that of SSW and there are various bacteria adapting in DSW environment, which differ from those in SSW. Therefore, DSW is believed to contain novel bacteria not found in SSW as a source for finding novel bioactive compounds.}, pages = {137--146}, title = {Bacterial community structure analysis of deep-sea water and surface seawater in Japan by pyrosequencing}, volume = {19}, year = {2019} }