The plant microbiota play a key role in plant productivity, nutrient uptake, resistance to stress and flowering. The flowering of moso bamboo has been a focus of study. The mechanism of flowering is related to nutrient uptake, temperature, hormone balance and regulation of key genes. However, the connection between microbiota of moso bamboo and its flowering is unknown. In this study, samples of rhizosphere soil, rhizomes, roots and leaves of flowering and nonflowering plants were collected, and 16S rRNA amplicon Illumina sequencing was utilized to separate the bacterial communities associated with different flowering stages of moso bamboo. We identified 5442 OTUs, and the number of rhizosphere soil OTUs was much higher than those of other samples. Principal component analysis (PCA) and hierarchical clustering (Bray Curtis dis) analysis revealed that the bacterial microorganisms related to rhizosphere soil and endophytic tissues of moso bamboo differed significantly from those in bulk soil and rhizobacterial and endosphere microbiomes. In addition, the PCA analyses of root and rhizosphere soil revealed different structures of microbial communities between bamboo that is flowering and not flowering. Through the analysis of core microorganisms, it was found that Flavobacterium, Bacillus and Stenotrophomonas played an important role in the absorption of N elements, which may affect the flowering time of moso bamboo. Our results delineate the complex host-microbe interactions of this plant. We also discuss the potential influence of bacterial microbiome in flowering, which can provide a basis for the development and utilization of moso bamboo.

植物微生物群在植物生产力、养分吸收、抗逆性和开花方面发挥着关键作用。毛竹的开花一直是研究的重点。开花机制与养分吸收、温度、激素平衡和关键基因调控有关。然而，毛竹的微生物群与其开花之间的联系尚不清楚。本研究采集了开花和不开花植物的根际土壤、根茎、根和叶样品，并利用 16S rRNA 扩增子 Illumina 测序分离了与毛竹不同开花期相关的细菌群落。我们鉴定了 5442 个 OTU，根际土壤 OTU 的数量远高于其他样品。主成分分析 (PCA) 和层次聚类 (Bray Curtis dis) 分析表明，与毛竹根际土壤和内生组织相关的细菌微生物与大块土壤、根际细菌和根际微生物组中的微生物显着不同。此外，对根和根际土壤的 PCA 分析揭示了开花和未开花的竹子之间微生物群落的不同结构。通过对核心微生物的分析发现，对根和根际土壤的 PCA 分析揭示了开花和未开花的竹子之间微生物群落的不同结构。通过对核心微生物的分析发现，对根和根际土壤的 PCA 分析揭示了开花和未开花的竹子之间微生物群落的不同结构。通过对核心微生物的分析发现，黄杆菌属、芽孢杆菌属和窄养单胞菌属对氮元素的吸收起重要作用，可能影响毛竹的开花时间。我们的结果描述了这种植物复杂的宿主-微生物相互作用。我们还探讨了细菌微生物组对开花的潜在影响，可为毛竹的开发利用提供依据。