The spatial variation of soil bacterial community assembly processes affects the accuracy of source tracking in ten major Chinese cities
The spatial variation of soil bacterial community assembly processes affects the accuracy of source tracking in ten major Chinese cities
复制标题
中国十大城市土壤细菌群落组装过程的空间变异影响源追踪的准确性
DOI：
10.1007/s11427-020-1843-6
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发表时间：
2021-01
期刊：
影响因子：
--
通讯作者：
Haiyan Chu
中科院分区：
文献类型：
--
作者：
Teng Yang;Yu Shi;Jun Zhu;Chang Zhao;Jianmei Wang;Zhiyong Liu;Xiao Fu;Xu Liu;Jiangwei Yan;Meiqing Yuan;Haiyan Chu
城市土壤中有数十亿的细菌细胞和数百万的物种。然而，城市土壤中细菌群落的分布模式和组装过程在很大程度上仍然是未知的。我们也不知道是否可以使用细菌来追踪某些城市和地区的土壤来源。在这里，Illumina MiSeq测序被用于调查中国61个地区和10个主要城市的529个随机地块的土壤细菌群落。在3,000公里的范围内，随着地理距离的增加，社区的相似性下降（Mantelr=0.62），社区组成的城市聚类（R2=0.50）。在城市内（<100公里），上述生物地理格局被削弱。过程分析表明，在小空间尺度和大空间尺度上，土壤细菌的聚集分别以扩散限制和扩散限制为主。相应地，准确跟踪随机土壤源到某些城市和地区的概率分别为90.0%和66.7%。当测试样本来自相距超过1，265公里的城市时，可以以接近100%的准确度识别土壤来源。总体而言，这项研究表明了强烈的距离衰减关系和明确的城市土壤细菌群落的城市之间的地理分区。不同空间尺度上不同群落聚集过程的重要性不同，强烈影响着微生物来源追踪的准确性。
Urban soils harbor billions of bacterial cells and millions of species. However, the distribution patterns and assembly processes of bacterial communities remain largely uncharacterized in urban soils. It is also unknown if we can use the bacteria to track soil sources to certain cities and districts. Here, Illumina MiSeq sequencing was used to survey soil bacterial communities from 529 random plots spanning 61 districts and 10 major cities in China. Over a 3,000 km range, community similarity declined with increasing geographic distance (Mantelr=0.62), and community composition was clustered by city (R2=0.50). Within cities (<100 km), the aforementioned biogeographic patterns were weakened. Process analysis showed that homogenizing dispersal and dispersal limitation dominated soil bacterial assembly at small and large spatial scales, respectively. Accordingly, the probabilities of accurately tracking random soil sources to certain cities and districts were 90.0% and 66.7%, respectively. When the tested samples originated from cities that were more than 1,265 km apart, the soil sources could be identified with nearly 100% accuracy. Overall, this study demonstrates the strong distance-decay relationship and the clear geographic zoning of urban soil bacterial communities among cities. The varied importance of different community assembly processes at multiple spatial scales strongly affects the accuracy of microbial source tracking.
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影响因子：
3.1
作者：
D. Pirrie;L. Dawson;A. Graham
通讯作者：
D. Pirrie;L. Dawson;A. Graham
空间尺度影响华北平原麦田土壤细菌群落随机性与决定性的相对作用
影响因子：
15.5
作者：
Shi Y;Li Y;Xiang X;Sun R;Yang T;He D;Zhang K;Ni Y;Zhu YG;Adams JM;Chu H
通讯作者：
Chu H
影响因子：
6.4
作者：
Ma B;Dai Z;Wang H;Dsouza M;Liu X;He Y;Wu J;Rodrigues JL;Gilbert JA;Brookes PC;Xu J
通讯作者：
Xu J
DOI：
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发表时间：
--
期刊：
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影响因子：
--
作者：
通讯作者：
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影响因子：
56.9
作者：
Metcalf, Jessica L.;Xu, Zhenjiang Zech;Knight, Rob
通讯作者：
Knight, Rob