There is evidence that shows that phosphorus (P) fertilization has a moderate effect on the rhizosphere microbial composition of cultivated crops. But how this effect is manifested on wild species of the same crop is not clear. This study compares the impact of phosphorus fertilization with rhizosphere bacterial community composition and its predicted functions, related to P-cycling genes, in both cultivated and non-cultivated potato (Solanum sp.) plants. It was found that the biomass of non-cultivated potatoes was more responsive to P fertilization as compared with cultivated plants. Differences in general bacterial community composition patterns under increasing P amendments were subtle for both potato groups. However, potato genotype significantly influenced community composition with several bacterial families being more abundant in the cultivated plants. In addition, the predicted phosphatases had lower abundances in modern cultivars compared with non-cultivated potatoes. In summary, despite higher accumulation of differentially abundant bacteria in the rhizosphere of cultivated plants, the responsiveness of these plants to increase P levels was lower than in non-cultivated plants.

中文翻译：

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磷肥对栽培和非栽培马铃薯植株吸收和根际微生物组的差异影响。

有证据表明，磷（P）施肥对耕作作物的根际微生物组成有中等影响。但是，这种作用如何表现在同一作物的野生物种上尚不清楚。这项研究比较了磷肥对根际细菌群落组成及其在P和cycling基因相关的预测功能的影响，在栽培和非栽培马铃薯（Solanum sp。）中均如此。发现与栽培植物相比，未栽培马铃薯的生物量对磷肥响应更强。两个马铃薯组在增加的P修正下一般细菌群落组成模式的差异都很细微。然而，马铃薯基因型显着影响群落组成，栽培植物中的几个细菌科更为丰富。另外，与未栽培的马铃薯相比，现代栽培品种中预测的磷酸酶丰度较低。总之，尽管在栽培植物的根际中积累了差异丰富的细菌，但是这些植物对提高磷水平的反应性却低于未栽培植物。