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Steeper spatial scaling patterns of subsoil microbiota are shaped by deterministic assembly process
Du, Xiongfeng; Deng, Ye; Li, Shuzhen; Escalas, Arthur; Feng, Kai; He, Qing; Wang, Zhujun; Wu, Yueni; Wang, Danrui; Peng, Xi; Wang, Shang
2020-02
Source PublicationMOLECULAR ECOLOGY
ISSN0962-1083
Volume30Issue:4Pages:1072-1085
AbstractAlthough many studies have investigated the spatial scaling of microbial communities living in surface soils, very little is known about the patterns within deeper strata, nor is the mechanism behind them. Here, we systematically assessed spatial scaling of prokaryotic biodiversity within three different strata (Upper: 0-20 cm, Middle: 20-40 cm, and Substratum: 40-100 cm) in a typical grassland by examining both distance-decay (DDRs) and species-area relationships (SARs), taxonomically and phylogenetically, as well as community assembly processes. Each layer exhibited significant biogeographic patterns in both DDR and SAR (p < .05), with taxonomic turnover rates higher than phylogenetic ones. Specifically, the spatial turnover rates, beta and z values, respectively, ranged from 0.016 +/- 0.005 to 0.023 +/- 0.005 and 0.065 +/- 0.002 to 0.077 +/- 0.004 across soil strata, and both increased with depth. Moreover, the prokaryotic community in grassland soils assembled mainly according to deterministic rather than stochastic mechanisms. By using normalized stochasticity ratio (NST) based on null model, the relative importance of deterministic ratios increased from 48.0 to 63.3% from Upper to Substratum, meanwhile a phylogenetic based method revealed average beta NTI also increased with depth, from -5.29 to 19.5. Using variation partitioning and distance approaches, both geographic distance and soil properties were found to strongly affect biodiversity structure, the proportions increasing with depth, but spatial distance was always the main underlying factor. These indicated increasingly deterministic proportions in accelerating turnover rates for spatial assembly of prokaryotic biodiversity. Our study provided new insights on biogeography in different strata, revealing importance of assembly patterns and mechanisms of prokaryote communities in below-surface soils.
Department中国科学院环境生物技术重点实验室
Keywordassembly mechanism biodiversity biogeography grassland prokaryote spatial scaling
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45215
Collection中国科学院环境生物技术重点实验室
Recommended Citation
GB/T 7714
Du, Xiongfeng,Deng, Ye,Li, Shuzhen,et al. Steeper spatial scaling patterns of subsoil microbiota are shaped by deterministic assembly process[J]. MOLECULAR ECOLOGY,2020,30(4):1072-1085.
APA Du, Xiongfeng.,Deng, Ye.,Li, Shuzhen.,Escalas, Arthur.,Feng, Kai.,...&Wang, Shang.(2020).Steeper spatial scaling patterns of subsoil microbiota are shaped by deterministic assembly process.MOLECULAR ECOLOGY,30(4),1072-1085.
MLA Du, Xiongfeng,et al."Steeper spatial scaling patterns of subsoil microbiota are shaped by deterministic assembly process".MOLECULAR ECOLOGY 30.4(2020):1072-1085.
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