Symbiont interactions with non-native hosts limit the formation of new symbioses.
Symbiont interactions with non-native hosts limit the formation of new symbioses.
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DOI：
10.1186/s12862-018-1143-z
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发表时间：
2018-03-12
影响因子：
3.4
通讯作者：
Henry LM
中科院分区：
文献类型：
--
作者：
Niepoth N;Ellers J;Henry LM
兼性共生体在真核生物中很常见，可以为宿主提供显着的健身益处。尽管携带这些微生物具有优势，但它们通常仅存在于种群中的一小部分个体中，并且通常非随机地分布在宿主种群中。目前尚不清楚为什么兼性共生体只存在于某些宿主个体和种群中。在这里，我们提供了一个机制，以帮助解释这种现象的证据：当共生体与非本地主机基因型相互作用，它可以限制共生体的水平转移到特定的主机谱系和相关主机的人口。使用互惠转染的兼性共生体防御汉密尔顿到不同的豌豆蚜虫克隆，我们表明，特定的共生菌株可以导致高主机死亡率和抑制后代生产时，注入到蚜虫克隆比他们的原生宿主血统。然而，一旦建立，共生体的能力，以保护免受寄生蜂的影响，其来源。然后，我们证明，H。防御蚜也更有可能与来自植物适应种群（生物型）的蚜虫克隆建立共生关系，这些蚜虫克隆通常携带H.与通常不携带这种共生体的生物型的克隆相比，这些结果提供了证据，某些蚜虫谱系和相关宿主的人口倾向于建立与H。防御。我们的研究结果表明，主机共生体基因型相互作用代表了一个潜在的障碍，水平传播，可以限制共生体的传播，他们携带的适应性特征，某些主机谱系。本文的在线版本（10.1186/s12862-018-1143-z）包含补充材料，可供授权用户使用。
Facultative symbionts are common in eukaryotes and can provide their hosts with significant fitness benefits. Despite the advantage of carrying these microbes, they are typically only found in a fraction of the individuals within a population and are often non-randomly distributed among host populations. It is currently unclear why facultative symbionts are only found in certain host individuals and populations. Here we provide evidence for a mechanism to help explain this phenomenon: that when symbionts interact with non-native host genotypes it can limit the horizontal transfer of symbionts to particular host lineages and populations of related hosts. Using reciprocal transfections of the facultative symbiont Hamiltonella defensa into different pea aphid clones, we demonstrate that particular symbiont strains can cause high host mortality and inhibit offspring production when injected into aphid clones other than their native host lineage. However, once established, the symbiont’s ability to protect against parasitoids was not influenced by its origin. We then demonstrate that H. defensa is also more likely to establish a symbiotic relationship with aphid clones from a plant-adapted population (biotype) that typically carry H. defensa in nature, compared to clones from a biotype that does not normally carry this symbiont. These results provide evidence that certain aphid lineages and populations of related hosts are predisposed to establishing a symbiotic relationship with H. defensa. Our results demonstrate that host-symbiont genotype interactions represent a potential barrier to horizontal transmission that can limit the spread of symbionts, and adaptive traits they carry, to certain host lineages. The online version of this article (10.1186/s12862-018-1143-z) contains supplementary material, which is available to authorized users.
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影响因子：
4.4
作者：
Degnan, Patrick H.;Moran, Nancy A.
通讯作者：
Moran, Nancy A.
影响因子：
64.5
作者：
Chung H;Pamp SJ;Hill JA;Surana NK;Edelman SM;Troy EB;Reading NC;Villablanca EJ;Wang S;Mora JR;Umesaki Y;Mathis D;Benoist C;Relman DA;Kasper DL
通讯作者：
Kasper DL
影响因子：
1.5
作者：
Douglas, A. E.;Francois, C. L. M. J.;Minto, L. B.
通讯作者：
Minto, L. B.
DOI：
10.1126/science.1174463
发表时间：
2009-08-21
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Oliver KM;Degnan PH;Hunter MS;Moran NA
通讯作者：
Moran NA
DOI：
10.1073/pnas.052466499
发表时间：
2002-03-05
影响因子：
11.1
作者：
McGraw, EA;Merritt, DJ;O'Neill, SL
通讯作者：
O'Neill, SL