Soil texture is an essential component of soil survey for estimating potentials and limitations of land use and management. It has been appreciated as an important predictor for numerous soil processes. However, its connections with the diversity and composition of the soil microbial community remain less understood. This work employed a marker gene high-throughput sequencing approach to determine soil texture-based patterns of bacterial and fungal distribution. Thirty-six intact soil cores were sampled from bermudagrass ecosystems across seven soil texture classes with sand fraction varying from 30.3 to 83.4% and clay fraction from 4.4 to 53.0%. These soil cores were arranged into three sets of equal numbers, and each set of 12 was subjected to three moisture regimes (dry spell, field moisture, and saturation-field capacity), respectively, for 15 days. Soil cores were further stratified into top and bottom sections, leading to a total of 72 samples with varying soil physical and chemical properties. Our data revealed that fungal alpha diversity was more strongly related to soil texture than bacterial alpha diversity, with fungal species richness and Shannon diversity being positively correlated with the sand fraction. Soil texture was the second most important factor after soil pH in shaping the soil microbial community. Relative abundances of some fungi (Basidiomycota and Eurotiomycetes) and filamentous bacteria (Actinobacteria, Chloroflexi) significantly increased with silt and/or clay content. The genetic potential for the degradation of organic compounds also appeared to be higher in finer textured soils than the coarse-textured soils. By identifying sand, silt or clay-preferred microbial taxa and characterizing mineral particle-dependent genetic potential of organic carbon degradation and nitrogen cycling, this work highlighted the significance of soil texture and texture-associated pores, and resource locality, in regulating microbial diversity and community composition.

土壤质地是土壤调查必不可少的组成部分，用于估算土地使用和管理的潜力和局限性。它被认为是许多土壤过程的重要预测因子。然而，其与土壤微生物群落的多样性和组成的联系仍然鲜为人知。这项工作采用了标记基因高通量测序方法来确定基于土壤质地的细菌和真菌分布模式。在百慕大土壤生态系统中，从七个土壤质地类别中采样了36个完整的土壤核心，其中沙子分数从30.3％到83.4％不等，粘土分数从4.4％到53.0％不等。将这些土壤核心分成三组，每组相等，然后每组12个分别经受三种水分处理（干旱，田间水分和饱和田间持水量），持续15天。将土壤核心进一步分层为顶部和底部，得到总共72个具有不同土壤理化性质的样品。我们的数据表明，真菌α多样性比细菌α多样性与土壤质地更紧密相关，真菌物种丰富度和香农多样性与沙粒含量呈正相关。在塑造土壤微生物群落之后，土壤质地是仅次于pH的第二重要因素。随着泥沙和/或粘土含量的增加，某些真菌（Basidiomycota和Eurotiomycetes）和丝状细菌（Actinobacteria，Chloroflexi）的相对丰度显着增加。在质地较细的土壤中，降解有机化合物的遗传潜力似乎也比质地较粗的土壤高。通过识别沙子，