functional biogeography as evidence of gene transfer in hypersaline microbial communities功能性生物地理学在咸水环境微生物群落基因转移的证据.pdfVIP

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functional biogeography as evidence of gene transfer in hypersaline microbial communities功能性生物地理学在咸水环境微生物群落基因转移的证据.pdf

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functional biogeography as evidence of gene transfer in hypersaline microbial communities功能性生物地理学在咸水环境微生物群落基因转移的证据

Functional Biogeography as Evidence of Gene Transfer in Hypersaline Microbial Communities 1 1 2 2,4¤a J. Jacob Parnell *, Giovanni Rompato , Leigh C. Latta, IV , Michael E. Pfrender , Joy D. Van 5 5 5 6 1 1,3 Nostrand , Zhili He , Jizhong Zhou , Gary Andersen , Patti Champine , Balasubramanian Ganesan , Bart C. Weimer1,2,3¤b 1 Center for Integrated BioSystems, Utah State University, Logan, Utah, United States of America, 2 Department of Biology, Utah State University, Logan, Utah, United States of America, 3 Department of Nutrition Food Sciences, Utah State University, Logan, Utah, United States of America, 4 Ecology Center, Utah State University, Logan, Utah, United States of America, 5 Institute for Environmental Genomics, Department of Botany and Microbiology, University of Oklahoma, Norman, Oklahoma, United States of America, 6 Lawrence Berkeley National Laboratory, University of California, Berkeley, California, United States of America Abstract Background: Horizontal gene transfer (HGT) plays a major role in speciation and evolution of bacteria and archaea by controlling gene distribution within an environment. However, information that links HGT to a natural community using relevant population-genetics parameters and spatial considerations is scarce. The Great Salt Lake (Utah, USA) provides an excellent model for studying HGT in the context of biogeography because it is a contiguous system with dispersal limitations due to a strong selective salinity gradient. We hypothesize that in spite of th