DOI: 10.1016/j.foreco.2014.12.010
Scopus记录号: 2-s2.0-84920155529
论文题名: Hemlock woolly adelgid alters fine root bacterial abundance and mycorrhizal associations in eastern hemlock
作者: Vendettuoli J.F. ; Orwig D.A. ; Krumins J.A. ; Waterhouse M.D. ; Preisser E.L.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 339 起始页码: 112
结束页码: 116
语种: 英语
英文关键词: Adelges tsugae
; Fine root bacteria
; Fine root carbon:nitrogen
; Mycorrhizae
; Tsuga canadensis
Scopus关键词: Bacteria
; Carbon
; Fungi
; Population statistics
; Soils
; Adelges tsugae
; Bacterial abundance
; Ectomycorrhizal fungi
; Fine roots
; Hemlock woolly adelgid
; Mycorrhizae
; Root colonization
; Tsuga canadensis
; Forestry
; abundance
; ectomycorrhiza
; fitness
; herbivore
; insect
; phytomass
; population decline
; rhizosphere
; root colonization
; Bacteria
; Carbon
; Nitrogen
; Roots
; Tsuga Canadensis
; Georgia
; Maine
; United States
; Adelges tsugae
; Adelgidae
; Bacteria (microorganisms)
; Coniferophyta
; Fungi
; Hexapoda
; Tsuga canadensis
英文摘要: While the impact of aboveground herbivores on plant biomass and fitness has received considerable attention, there has been far less research on the corresponding belowground impacts. The belowground effects of aboveground feeding may be particularly noticeable for invasive and/or outbreaking herbivore species that reach high densities and can cause major damage and sometimes death. The hemlock woolly adelgid, Adelges tsugae, is an invasive pest on the eastern seaboard of the United States that feeds on a native shade-tolerant conifer, the eastern hemlock Tsuga canadensis. Trees rapidly decline and die following infestation, and the invasion of this insect has devastated hemlock populations from Georgia in the south to Maine in the north. Despite their substantial impact on tree health, we are unaware of any research into the adelgid's effect on hemlock roots and the surrounding rhizosphere. We report the results of research assessing ectomycorrhizal root colonization, rhizosphere bacterial abundance, and root C:N ratios of infested and uninfested T. canadensis. We found that adelgid infestation decreased the percentage of root material colonized by ectomycorrhizal fungi by more than 67%. Rhizosphere bacterial abundance on fine roots was 25% lower on adelgid-infested versus uninfested trees, and roots of adelgid-infested trees contained significantly less carbon. Our results demonstrate that aboveground adelgid infestation can affect hemlock root composition and alter belowground interactions with ectomycorrhizal fungi and bacteria. This information demonstrates that above-belowground linkages can transmit the impact of herbivory far from the site of localized damage. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65558
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Natural Resources Science, University of Rhode Island, Kingston, RI, United States; Harvard Forest, Harvard University, Petersham, MA, United States; Department of Biology and Molecular Biology, Montclair State University, Montclair, NJ, United States; Department of Biology, University of British Columbia, Kelowna, BC, Canada; Department of Biological Sciences, University of Rhode Island, Kingston, RI, United States
Recommended Citation:
Vendettuoli J.F.,Orwig D.A.,Krumins J.A.,et al. Hemlock woolly adelgid alters fine root bacterial abundance and mycorrhizal associations in eastern hemlock[J]. Forest Ecology and Management,2015-01-01,339