Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aadc19 |
Forest die-off following global-change-type drought alters rhizosphere fungal communities | |
Hopkins, Anna J. M.1,2; Ruthrof, Katinka X.2,3; Fontaine, Joseph B.2; Matusick, George2; Dundas, Shannon J.2,4; Hardy, Giles E. St J.2 | |
2018-09-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Globally, forest die-off from global-change-type drought events (hotter droughts) are of increasing concern, with effects reported from every forested continent. While implications of global-change-type drought events have been explored for above-ground vegetation, below-ground organisms have received less attention, despite their essential contributions to plant growth, survival, and ecosystem function. We investigated rhizosphere fungal communities in soils beneath trees affected by a global-change-type drought in a Mediterranean climate-type ecosystem in southwestern Australia, quantifying how fungal richness, composition and functional groups varied along a drought impact gradient. Following a forest die-off three years previously, we collected soils beneath dead and alive trees within forest exhibiting high, minimal and relatively unaffected levels of forest die-off. Rhizosphere fungal DNA was extracted from soils, amplified and subjected to high throughput sequencing. Fungal community composition varied significantly (P < 0.001) along the drought impact gradient with less richness in drought affected stands. There was some evidence of community differentiation between dead versus alive trees (P = 0.09), and no difference in rarefied richness and diversity. When considered by functional group, die-off-impacted plots had more arbuscular mycorrhizal fungi (AM) and saprotrophs, and fewer ectomycorrhizal fungi (ECM), compared with living trees from the unaffected plots. Further, within die-off plots, dead versus alive tree rhizosphere samples contained more AM, saprotrophs and pathogens, and fewer ECM. Disruptions to rhizosphere fungal communities, such as altered functional groups, can have implications for ecosystem persistence and function, particularly in regions projected to experience increased global-change-type drought events. |
英文关键词 | drought dieback collapse soil microbes ectomycorrhiza arbuscular mycorrhiza plant-soil feedbacks |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000444293600001 |
WOS关键词 | CLIMATE-CHANGE ; MICROBIAL ACTIVITY ; TREE MORTALITY ; SOIL ; DIVERSITY ; PLANT ; RESPONSES ; DYNAMICS ; HEAT ; SUCCESSION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/15018 |
专题 | 气候变化 |
作者单位 | 1.Edith Cowan Univ, Sch Sci, Ctr Ecosyst Management, Joondalup, WA, Australia; 2.Murdoch Univ, Sch Vet & Life Sci, Environm & Conservat Sci, Murdoch, WA, Australia; 3.Kings Pk Sci, Dept Biodivers Conservat & Attract, Kings Pk, WA, Australia; 4.New South Wales Dept Primary Ind, Orange, NSW, Australia |
推荐引用方式 GB/T 7714 | Hopkins, Anna J. M.,Ruthrof, Katinka X.,Fontaine, Joseph B.,et al. Forest die-off following global-change-type drought alters rhizosphere fungal communities[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(9). |
APA | Hopkins, Anna J. M.,Ruthrof, Katinka X.,Fontaine, Joseph B.,Matusick, George,Dundas, Shannon J.,&Hardy, Giles E. St J..(2018).Forest die-off following global-change-type drought alters rhizosphere fungal communities.ENVIRONMENTAL RESEARCH LETTERS,13(9). |
MLA | Hopkins, Anna J. M.,et al."Forest die-off following global-change-type drought alters rhizosphere fungal communities".ENVIRONMENTAL RESEARCH LETTERS 13.9(2018). |
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