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首页> 外文期刊>农业科学学报（英文版） >Evolution of Xanthomonas Gene Content: Gene Gain/Loss History and Species Divergence
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Evolution of Xanthomonas Gene Content: Gene Gain/Loss History and Species Divergence

机译：Xanthomonas基因含量的演变：基因增益/损失历史和物种差异

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摘要

Horizontal gene transfer (HGT) plays key roles in the evolution of pathogenetic bacteria, especially in pathogenetic associated genes. In this study, the evolutionary dynamics of Xanthomonas at species level were determined by the comparative analysis of the complete genomes of 15 Xanthomonas strains. A concatenated multiprotein phyletic pattern and a dataset with Xanthomonas clusters of orthologous genes were constructed. Mathematical extrapolation estimates that the core genome will reach a minimum of about 1 547 genes while the pan-genome will increase up to 22 624 genes when sequencing 1 000 genomes. The HGT extent in this genus was assessed by using a Markov-based probabilistic method. The reconstructed gene gain/loss history, which contained several features consistent with biological observations, showed that nearly 60% of the Xanthomonas genes were acquired by HGT. A large fraction of variability was in the clade ancestor nodes and "leaves of the tree" Coexpression analysis suggested that the pathogenic and metabolic variation between Xanthomonas oryzae pv. oryzicola and Xanthomonas oryzae pv. oryzae might due to recently-transferred genes. Our results strongly supported that the gene gain/loss may play an important role in divergence and pathogenicity variation of Xanthomonas species.

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  • 来源
    《农业科学学报（英文版）》 |2012年第6期|954-961|共8页
  • 作者

    JIN Gu-lei; ZHU Bo; ZHANG Guo-qing; XIE Guan-lin; ZHU Jun; LOU Miao-miao; ZHOU Xue-ping; ZHANG Xiao-wei; SUN Guo-chang; LI Bin;

  • 作者单位

    State Key Laboratory of Rice Biology and Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture/ Institute of Biotechnology, Zhejiang University, Hangzhou 310029, P.R.China;

    Institute of Bioinformatics, Zhejiang University, Hangzhou 310029, P.R.China;

    State Key Laboratory of Rice Biology and Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture/ Institute of Biotechnology, Zhejiang University, Hangzhou 310029, P.R.China;

    State Key Laboratory of Rice Biology and Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture/ Institute of Biotechnology, Zhejiang University, Hangzhou 310029, P.R.China;

    State Key Laboratory of Rice Biology and Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture/ Institute of Biotechnology, Zhejiang University, Hangzhou 310029, P.R.China;

    Institute of Bioinformatics, Zhejiang University, Hangzhou 310029, P.R.China;

    State Key Laboratory of Rice Biology and Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture/ Institute of Biotechnology, Zhejiang University, Hangzhou 310029, P.R.China;

    State Key Laboratory of Rice Biology and Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture/ Institute of Biotechnology, Zhejiang University, Hangzhou 310029, P.R.China;

    Crop Management Station, Jiaxing 314051, P.R. China;

    State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control/Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P.R. China;

    State Key Laboratory of Rice Biology and Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture/ Institute of Biotechnology, Zhejiang University, Hangzhou 310029, P.R.China;

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