Non-cultivable microorganisms from symbiotic associations of insects and other hosts
Non-cultivable microorganisms from symbiotic associations of insects and other hosts
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DOI：
10.1023/a:1000239108771
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发表时间：
1997-07-01
影响因子：
2.6
通讯作者：
Moran, NA
中科院分区：
文献类型：
--
作者：
Baumann, P;Moran, NA
许多共生关联涉及无法在实验室培养基上培养的微生物。在重组 DNA 分析和分子系统发育方法最近出现之前，这些生物体仍然鲜为人知。这些方法在内共生体中的应用已经产生了关于这些生物体的遗传学和进化的大量新见解。本通讯提供了最近研究的涉及不可培养共生体的关联列表。这些关联涉及多种宿主分类群以及对宿主生物学的广泛影响，包括有利的和有害的。在有益的内共生体中，已经记录了多种营养相互作用。许多动物宿主已经证明了一种类型的关联，即由原核生物对祖先宿主的单次感染引起的内共生。在这些关联中，内共生体通过母系传播，并且不在宿主谱系之间交换，导致宿主和内共生体的长期共多样化模式。蚜虫和不可培养的原核内共生体之间的关联是这种共生关系的一个经过充分研究的例子。
Many symbiotic associations involve microorganisms which cannot be cultivated on laboratory media. These organisms remained little known until the recent advent of methods of recombinant DNA analysis and molecular phylogenetics. Applications of these methods to endosymbionts have resulted in substantial new insights concerning the genetics and evolution of these organisms. This communication provides a listing of recently studied associations involving non-cultivable symbionts. The associations involve a diverse set of host taxa and a wide range of effects, both favorable and deleterious, on host biology. Among beneficial endosymbionts, a variety of nutritional interactions have been documented. One type of association has been demonstrated for a number of animal hosts, namely endosymbioses that result from a single infection of an ancestral host by a prokaryote. In these associations, endosymbionts are transmitted maternally and are not exchanged between host lineages, resulting in a long-term pattern of codiversification of hosts and endosymbionts. The association between aphids and non-cultivable prokaryotic endosymbionts is a well studied example of such a symbiosis.