Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14113 |
Drought consistently alters the composition of soil fungal and bacterial communities in grasslands from two continents | |
Ochoa-Hueso, Raul1; Collins, Scott L.2; Delgado-Baquerizo, Manuel3; Hamonts, Kelly4; Pockman, William T.2; Sinsabaugh, Robert L.2; Smith, Melinda D.5,6; Knapp, Alan K.5,6; Power, Sally A.4 | |
2018-07-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:7页码:2818-2827 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; USA; Australia |
英文摘要 | The effects of short-term drought on soil microbial communities remain largely unexplored, particularly at large scales and under field conditions. We used seven experimental sites from two continents (North America and Australia) to evaluate the impacts of imposed extreme drought on the abundance, community composition, richness, and function of soil bacterial and fungal communities. The sites encompassed different grassland ecosystems spanning a wide range of climatic and soil properties. Drought significantly altered the community composition of soil bacteria and, to a lesser extent, fungi in grasslands from two continents. The magnitude of the fungal community change was directly proportional to the precipitation gradient. This greater fungal sensitivity to drought at more mesic sites contrasts with the generally observed pattern of greater drought sensitivity of plant communities in more arid grasslands, suggesting that plant and microbial communities may respond differently along precipitation gradients. Actinobateria, and Chloroflexi, bacterial phyla typically dominant in dry environments, increased their relative abundance in response to drought, whereas Glomeromycetes, a fungal class regarded as widely symbiotic, decreased in relative abundance. The response of Chlamydiae and Tenericutes, two phyla of mostly pathogenic species, decreased and increased along the precipitation gradient, respectively. Soil enzyme activity consistently increased under drought, a response that was attributed to drought-induced changes in microbial community structure rather than to changes in abundance and diversity. Our results provide evidence that drought has a widespread effect on the assembly of microbial communities, one of the major drivers of soil function in terrestrial ecosystems. Such responses may have important implications for the provision of key ecosystem services, including nutrient cycling, and may result in the weakening of plant-microbial interactions and a greater incidence of certain soil-borne diseases. |
英文关键词 | drought enzyme activities microbial community rainfall manipulation soil-borne pathogens |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437281500008 |
WOS关键词 | CLIMATE-CHANGE ; SEMIARID ECOSYSTEMS ; VARIABILITY ; SENSITIVITY ; DIVERSITY ; RESPONSES ; GREENGENES ; SEQUENCES ; PULSES |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16838 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Autonomous Univ Madrid, Dept Ecol, Madrid, Spain; 2.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 3.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 4.Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW, Australia; 5.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA; 6.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Ochoa-Hueso, Raul,Collins, Scott L.,Delgado-Baquerizo, Manuel,et al. Drought consistently alters the composition of soil fungal and bacterial communities in grasslands from two continents[J]. GLOBAL CHANGE BIOLOGY,2018,24(7):2818-2827. |
APA | Ochoa-Hueso, Raul.,Collins, Scott L..,Delgado-Baquerizo, Manuel.,Hamonts, Kelly.,Pockman, William T..,...&Power, Sally A..(2018).Drought consistently alters the composition of soil fungal and bacterial communities in grasslands from two continents.GLOBAL CHANGE BIOLOGY,24(7),2818-2827. |
MLA | Ochoa-Hueso, Raul,et al."Drought consistently alters the composition of soil fungal and bacterial communities in grasslands from two continents".GLOBAL CHANGE BIOLOGY 24.7(2018):2818-2827. |
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