A multilocus approach to assessing co-evolutionary relationships between Steinernema spp. (Nematoda: Steinernematidae) and their bacterial symbionts Xenorhabdus spp. (γ-Proteobacteria: Enterobacteriaceae)
A multilocus approach to assessing co-evolutionary relationships between Steinernema spp. (Nematoda: Steinernematidae) and their bacterial symbionts Xenorhabdus spp. (γ-Proteobacteria: Enterobacteriaceae)
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DOI：
10.1007/s11230-010-9256-9
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发表时间：
2010-09-01
影响因子：
1.3
通讯作者：
Stock, S. Patricia
中科院分区：
文献类型：
--
作者：
Lee, Ming-Min;Stock, S. Patricia
线虫属Steinernema Travassos，1927（线虫纲：Steinernematidae）及其伴生细菌Xabrihabdus spp.（γ-变形菌），是陆生动物-微生物共生的一种新兴模式。在这个协会的兴趣最初产生了他们的潜力，作为生物防治剂对害虫，但是，尽管在其领域的应用和日益普及的这个模型系统的进展，相对较少已公布，以揭示这种有益的伙伴关系的进化方面。这项研究增加了关于线虫-细菌共生的知识体系，提出了一个可能的方案，以cophylogenetic假说的形式为它们的历史关联。拓扑和似然为基础的测试方法，重建30主机共生体对之间的关联的历史，并衡量其推断的系统发育模式之间的相似性水平。
Nematodes of the genus Steinernema Travassos, 1927 (Nematoda: Steinernematidae) and their associated bacteria, Xenorhabdus spp. (gamma-Proteobacteria), are an emergent model of terrestrial animal-microbe symbiosis. Interest in this association initially arose out of their potential as biocontrol agents against insect pests, but, despite advances in their field application and the growing popularity of this model system, relatively little has been published to uncover the evolutionary facets of this beneficial partnership. This study adds to the body of knowledge regarding nematode-bacteria symbiosis by proposing a possible scenario for their historical association in the form of a cophylogenetic hypothesis. Topological and likelihood based testing methods were employed to reconstruct a history of association between 30 host-symbiont pairs and to gauge the level of similarity between their inferred phylogenetic patterns.