The interactions between sediment microbial assemblages and submerged macrophytes in aquatic ecosystems can be potentially regulated by benthic macrofauna, and the regulation effect may be closely related to macrophyte species with distinct properties; however, little information on this is available. An aquarium experiment was designed to evaluate the role of snail Bellamya aeruginosa (Reeve) in regulating sediment bacterial communities associated with two common types of submerged macrophytes, Ceratophyllum demersum (L.) and Hydrilla verticillata (L. f.) Royle. The results showed that the effect of B. aeruginosa on sediment bacterial diversity and richness was plant species-specific; the presence of B. aeruginosa increased the bacterial diversity and richness in C. demersum systems while slightly decreased them in H. verticillata systems. Similar variations in the predicted microbial functions related to matter cycle in these systems were observed. Bacterial community composition patterns were also modified by B. aeruginosa; in its presence, the discrepancy between systems harbouring two different plants diminished, although the effect was limited. Application of the linear discriminant analysis effect size (LEfSe) method showed that the presence of B. aeruginosa resulted in appearance of significantly different bacterial taxa mainly in the C. demersum systems. Redundancy analysis showed that available phosphorus and NH₄⁺ were significantly related to the observed variations in bacterial community compositions across the samples. Overall, a plant species-specific role of B. aeruginosa in modifying sediment bacterial communities and functions was found.

底栖大型动物可能潜在地调节水生生态系统中沉积物微生物群落与沉水大型植物之间的相互作用，其调节作用可能与性质独特的大型植物密切相关。但是，有关此信息很少。设计了一个水族馆实验来评估蜗牛铜绿贝拉米亚（Reeve）在调节与两种常见的沉水植物（Ceratophyllum demersum（L.）和Hydrilla verticillata（L.f.）Royle ）有关的沉积物细菌群落中的作用。结果表明，铜绿假单胞菌对沉积物细菌多样性和丰富度的影响是植物物种特异性的。铜绿假单胞菌的存在增加在细菌的多样性和丰富性金鱼藻系统，同时略微降低他们黑藻系统。在这些系统中，与物质循环相关的预测微生物功能也发生了类似的变化。细菌群落组成模式也被铜绿假单胞菌改变; 在这种情况下，虽然效果有限，但包含两种不同植物的系统之间的差异有所减少。线性判别分析效果大小（LEfSe）方法的应用表明铜绿假单胞菌的存在导致明显不同的细菌类群的出现，主要是在C. demersum中系统。冗余分析表明，有效磷和NH ₄ ⁺与样品中细菌群落组成的变化显着相关。总的来说，发现了铜绿假单胞菌在改变沉积物细菌群落和功能中的植物物种特异性作用。