Phylogenetic diversity of bacteria associated with dinoflagellate Alexandrium catenella.

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Phylogenetic diversity of bacteria associated with dinoflagellate Alexandrium catenella.

LIU Bing¹;LI Yu²;YE Qian²;LI Tai-wu¹;SU Xiu-rong¹;LI Deng-feng¹;CHEN Yan¹;SHI Xi-zhi¹

¹Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, Zhejiang, China;²Ningbo Maritime Safety Administration, Ningbo 315020, Zhejiang, China

Received:2008-09-01 Revised:1900-01-01 Online:2009-05-10 Published:2009-05-10

Abstract

Abstract: The phylogenetic diversity of bacteria associated with Alexandrium catenella was studied by 16S rDNA gene sequences. With culture-independent approach, the total bacterial DNA was extracted from A. catenella. 16S rDNA genes were amplified by PCR, and a 16S rDNA clone library was constructed. The phylogenetic diversity of the bacteria was determined by RFLP-16S rDNA sequencing of cloned DNA fragments. A total of 84 cloned 16S rDNA fragments were digested with restriction endonucleases HaeⅢ, and 30 different PFLP types were obtained. Fifty cloned partial sequences were acquired, most of which were related to Proteobacter, and mainly attributed to α-Proteobacteria and Bacteroidetes in the phylogenetic tree. In α-Proteobacteria, Roseobacter sp. was the dominant clade. This study demonstrated the prolific bacterial diversity of A. catenella.

Key words: Ecosystem, Service, Value, Remote sensing, Measurement

LIU Bing¹;LI Yu²;YE Qian²;LI Tai-wu¹;SU Xiu-rong¹;LI Deng-feng¹;CHEN Yan¹;SHI Xi-zhi¹. Phylogenetic diversity of bacteria associated with dinoflagellate Alexandrium catenella.[J]. cje.

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Phylogenetic diversity of bacteria associated with dinoflagellate Alexandrium catenella.

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