Diversity of diazotrophic unicellular cyanobacteria in the tropical North Atlantic Ocean

被引:55
作者
Falcón, LI
Cipriano, F
Chistoserdov, AY
Carpenter, EJ
机构
[1] San Francisco State Univ, Romberg Tiburon Ctr Environm Studies, Tiburon, CA 94920 USA
[2] SUNY Stony Brook, Marine Sci Res Ctr, Stony Brook, NY 11794 USA
[3] San Francisco State Univ, Conservat Genet Lab, Dept Biol, San Francisco, CA 94132 USA
[4] Univ Louisiana, Dept Biol, Lafayette, LA 70504 USA
关键词
D O I
10.1128/AEM.68.11.5760-5764.2002
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
We present data on the genetic diversity and phylogenetic affinities of N-2-fixing unicellular cyanobacteria in the plankton of the tropical North Atlantic Ocean. Our dinitrogenase gene (nifH) sequences grouped together with a group of cyanobacteria from the subtropical North Pacific; another subtropical North Pacific group was only distantly related. Most of the 16S ribosomal DNA sequences from our tropical North Atlantic samples were closely allied with sequences from a symbiont of the diatom Climacodium frauenfeldianum. These findings suggest a complex pattern of evolutionary and ecological divergence among unicellular cyanobacteria within and between ocean basins.
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收藏
页码:5760 / 5764
页数:5
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