As a model for genetic studies, Arabidopsis thaliana (Arabidopsis) offers great potential to unravel plant genome-related mechanisms that shape the root microbiome. However, the fugitive life history of this species might have evolved at the expense of investing in capacity to steer an extensive rhizosphere effect. To determine whether the rhizosphere effect of Arabidopsis is different from other plant species that have a less fugitive life history, we compared the root microbiome of Arabidopsis to eight other, later succession plant species from the same habitat. The study included molecular analysis of soil, rhizosphere, and endorhizosphere microbiome both from the field and from a laboratory experiment. Molecular analysis revealed that the rhizosphere effect (as quantified by the number of enriched and depleted bacterial taxa) was ~35% lower than the average of the other eight species. Nevertheless, there are numerous microbial taxa differentially abundant between soil and rhizosphere, and they represent for a large part the rhizosphere effects of the other plants. In the case of fungal taxa, the number of differentially abundant taxa in the Arabidopsis rhizosphere is 10% of the other species’ average. In the plant endorhizosphere, which is generally more selective, the rhizosphere effect of Arabidopsis is comparable to other species, both for bacterial and fungal taxa. Taken together, our data imply that the rhizosphere effect of the Arabidopsis is smaller in the rhizosphere, but equal in the endorhizosphere when compared to plant species with a less fugitive life history.

作为遗传研究的模型，拟南芥（拟南芥）为揭示塑造根系微生物组的植物基因组相关机制提供了巨大的潜力。然而，该物种的逃亡生活史可能是以牺牲投资于引导广泛的根际效应的能力为代价的。为了确定拟南芥的根际效应是否与其他具有较少逃亡生活史的植物物种不同，我们将拟南芥的根部微生物组与来自同一栖息地的其他八种后来继承的植物物种进行了比较。该研究包括来自田间和实验室实验的土壤、根际和内根际微生物组的分子分析。分子分析显示，根际效应（通过富集和耗尽的细菌类群的数量来量化）比其他 8 个物种的平均值低约 35%。然而，土壤和根际之间存在大量差异丰富的微生物类群，它们在很大程度上代表了其他植物的根际效应。在真菌类群的情况下，拟南芥根际差异丰富的类群数量是其他物种平均值的 10%。在通常更具选择性的植物根际中，拟南芥的根际效应与其他物种相当，无论是细菌还是真菌类群。总之，我们的数据表明，与具有较少逃亡生活史的植物物种相比，拟南芥的根际效应在根际较小，但在根际内则相等。它们在很大程度上代表了其他植物的根际效应。在真菌类群的情况下，拟南芥根际差异丰富的类群数量是其他物种平均值的 10%。在通常更具选择性的植物根际中，拟南芥的根际效应与其他物种相当，无论是细菌还是真菌类群。总之，我们的数据表明，与具有较少逃亡生活史的植物物种相比，拟南芥的根际效应在根际较小，但在根际内则相等。它们在很大程度上代表了其他植物的根际效应。在真菌类群的情况下，拟南芥根际差异丰富的类群数量是其他物种平均值的 10%。在通常更具选择性的植物根际中，拟南芥的根际效应与其他物种相当，无论是细菌还是真菌类群。总之，我们的数据表明，与具有较少逃亡生活史的植物物种相比，拟南芥的根际效应在根际较小，但在根际内则相等。对于细菌和真菌类群，拟南芥的根际效应与其他物种相当。总之，我们的数据表明，与具有较少逃亡生活史的植物物种相比，拟南芥的根际效应在根际较小，但在根际内则相等。对于细菌和真菌类群，拟南芥的根际效应与其他物种相当。总之，我们的数据表明，与具有较少逃亡生活史的植物物种相比，拟南芥的根际效应在根际较小，但在根际内则相等。