Gain and Loss of Phototrophic Genes Revealed by Comparison of Two Citromicrobium Bacterial Genomes
作者： Qiang Zheng , Rui Zhang , Paul C. M. Fogg , J. Thomas Beatty , Yu Wang
DOI: 10.1371/JOURNAL.PONE.0035790
关键词:
摘要: Proteobacteria are thought to have diverged from a phototrophic ancestor, according the scattered distribution of phototrophy throughout proteobacterial clade, and so occurrence numerous closely related chemotrophic microorganisms may be result loss genes for phototrophy. A widespread form bacterial is based on photochemical reaction center, encoded by puf puh operons that typically in ‘photosynthesis gene cluster’ (abbreviated as PGC) with pigment biosynthesis genes. Comparison two Citromicrobial genomes (98.1% sequence identity complete 16S rRNA genes), Citromicrobium sp. JL354, which contains copies center genes, strain JLT1363, chemotrophic, revealed evidence However, horizontal transfer was found these genomes. An incomplete PGC (pufLMC-puhCBA) JL354 located within an integrating conjugative element, indicates potential mechanism
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