...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Parallel genomic evolution and metabolic interdependence in an ancient symbiosis
【24h】

Parallel genomic evolution and metabolic interdependence in an ancient symbiosis

机译：古代共生中的平行基因组进化和代谢相互依赖性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Obligate symbioses with nutrient-provisioning bacteria have originated often during animal evolution and have been key to the ecological diversification of many invertebrate groups. To date, genome sequences of insect nutritional symbionts have been restricted to a related cluster within Gammaproteobacteria and have revealed distinctive features, including extreme reduction, rapid evolution, and biased nucleotide composition. Using recently developed sequencing technologies, we show that Sulcia muelleri, a member of the Bacteroidetes, underwent similar genomic changes during coevolution with its sap-feeding insect host (sharpshooters) and the coresident symbiont Baumannia cicadellinicola (Gammaproteobacteria). At 245 kilobases, Sulcia's genome is approximately one tenth of the smallest known Bacteroidetes genome and among the smallest for any cellular organism. Analysis of the coding capacities of Sulcia and Baumannia reveals striking complementarity in metabolic capabilities.
机译：带有养分供应细菌的专性共生通常是在动物进化过程中起源的，并且是许多无脊椎动物种群生态多样化的关键。迄今为止，昆虫营养共生体的基因组序列已被限制在γ-变形杆菌内的一个相关簇上，并显示出独特的特征，包括极度减少，快速进化和核苷酸组成偏向。使用最新开发的测序技术，我们证明了拟杆菌属Sulcia muelleri在其以汁液为食的昆虫宿主（神枪手）和共同居住的共生鲍曼不动杆菌Baumannia cicadellinicola（伽玛变形杆菌）共同进化过程中经历了类似的基因组变化。 Sulcia的基因组有245千个碱基，大约是已知的最小拟杆菌属基因组的十分之一，并且是任何细胞生物中最小的。对Sulcia和Baumannia编码能力的分析显示，代谢能力具有惊人的互补性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号