| 项目编号 | PRJCA006897 | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 项目标题 | Continental-scale soil bacterial communities following Spartina alterniflora invasion in Chinese coastal wetlands | ||||||||||||||||||||
| 涉及领域 | Environmental | ||||||||||||||||||||
| 数据类型 |
Metagenome
Raw sequence reads |
||||||||||||||||||||
| 物种名称 | soil metagenome | ||||||||||||||||||||
| 描述信息 | Spartina alterniflora (SA) has vastly expanded along Chinese coastlines, its colonization alters soil microbial communities and their functioning. However, far less is known of soil microbial geography in coastal wetlands following SA invasion in China. Here, we report the bacterial biogeography in 407 soils sampled from a 2,451 km climatic gradient across China, with SA and bare mudflat (Mud) habitats in parallel. Our results revealed clear latitudinal patterns of alpha diversity in both Mud and SA habitats, while with significant (p < 0.05) higher indices in SA habitat. SA invasion caused biotic homogenization of bacterial communities and accelerated their spatial turnover. Deterministic processes governed the bacterial community assembly, and the relative contribution of deterministic was enhanced with increasing geographic distance. Among all the 18 environmental variables, soil total sulfur and total nitrogen were found to influence the bacterial communities of Mud and SA habitats respectively. Co-occurrence network analyses showed a reduction in the complexity and robustness of bacterial network after SA invasion, in which with a more complex network in higher latitudes. Results of partial least squares path modeling (PLS-PM) suggested that SA performance was mainly influenced by climatic factors (path coefficient = -0.61, p < 0.01), and followed by soil bacterial communities (path coefficient = 0.27, p < 0.05). Overall, this study has investigated the continental-scale soil bacterial biogeography in Chinese coastal wetlands, as well as its association with SA growth. Our findings could help in understanding the generation and maintenance of microbial diversity in coastal wetlands, and in deciphering the SA expansion across China. | ||||||||||||||||||||
| 样品范围 | Environment | ||||||||||||||||||||
| 发布日期 | 2021-10-20 | ||||||||||||||||||||
| 项目资金来源 |
|
||||||||||||||||||||
| 提交者 | Gui Feng Gao (gfgao@issas.ac.cn) | ||||||||||||||||||||
| 提交单位 | Institute of Soil Science, Chinese Academy of Sciences | ||||||||||||||||||||
| 提交日期 | 2021-10-16 |