globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12072
Scopus记录号: 2-s2.0-84893768359
论文题名:
Horizontal gene transfer and the rock record: Comparative genomics of phylogenetically distant bacteria that induce wrinkle structure formation in modern sediments
作者: Flood B.E.; Bailey J.V.; Biddle J.F.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2014
卷: 12, 期:2
起始页码: 119
结束页码: 132
语种: 英语
Scopus关键词: article ; bacterial genome ; Beggiatoa ; cyanobacterium ; DNA sequence ; genetics ; horizontal gene transfer ; microbiology ; molecular genetics ; phylogeny ; phylogeography ; sediment ; Beggiatoa ; Cyanobacteria ; Gene Transfer, Horizontal ; Genome, Bacterial ; Geologic Sediments ; Molecular Sequence Data ; Phylogeny ; Phylogeography ; Sequence Analysis, DNA
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: Wrinkle structures are sedimentary features that are produced primarily through the trapping and binding of siliciclastic sediments by mat-forming micro-organisms. Wrinkle structures and related sedimentary structures in the rock record are commonly interpreted to represent the stabilizing influence of cyanobacteria on sediments because cyanobacteria are known to produce similar textures and structures in modern tidal flat settings. However, other extant bacteria such as filamentous representatives of the family Beggiatoaceae can also interact with sediments to produce sedimentary features that morphologically resemble many of those associated with cyanobacteria-dominated mats. While Beggiatoa spp. and cyanobacteria are metabolically and phylogenetically distant, genomic analyses show that the two groups share hundreds of homologous genes, likely as the result of horizontal gene transfer. The comparative genomics results described here suggest that some horizontally transferred genes may code for phenotypic traits such as filament formation, chemotaxis, and the production of extracellular polymeric substances that potentially underlie the similar biostabilizing influences of these organisms on sediments. We suggest that the ecological utility of certain basic life modes such as the construction of mats and biofilms, coupled with the lateral mobility of genes in the microbial world, introduces an element of uncertainty into the inference of specific phylogenetic origins from gross morphological features preserved in the ancient rock record. © 2014 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85167
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Earth Sciences, University of Minnesota- Twin Cities, Minneapolis, MN, United States; College of Earth, Ocean and the Environment, University of Delaware, Lewes, DE, United States

Recommended Citation:
Flood B.E.,Bailey J.V.,Biddle J.F.. Horizontal gene transfer and the rock record: Comparative genomics of phylogenetically distant bacteria that induce wrinkle structure formation in modern sediments[J]. Geobiology,2014-01-01,12(2)
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