Exploring variation in phyllosphere microbial communities across four hemlock species

Exploring variation in phyllosphere microbial communities across four hemlock species
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探索四种铁杉物种叶际微生物群落的变化

DOI:
10.1002/ecs2.2524
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发表时间:
2018
期刊:
影响因子:
2.7
通讯作者:
Cregger, Melissa A.
Cregger, Melissa A.
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Rogers, Timothy J.;Leppanen, Christy;Brown, Veronica;Fordyce, James A.;LeBude, Anthony;Ranney, Thomas;Simberloff, Daniel;Cregger, Melissa A.

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铁杉毛阿德尔吉德 (HWA) 是一种原产于亚洲和北美西部的昆虫。 1951 年首次在北美东部报道,它对东部铁杉(Tsuga canadensis)种群造成了严重破坏。铁杉的损失将极大地影响东部森林的结构和功能。东部铁杉和其他铁杉物种对阿德尔吉德感染的易感性各不相同。我们的研究旨在确定东部铁杉是否与其他同时出现的铁杉具有相似的茎(叶际)微生物群落,以及基于 HWA 侵染的同一物种树木内群落水平的变化是否相关。令人惊讶的是,我们发现根据 HWA 侵染程度,同一物种的树木之间的微生物群落组成或多样性没有差异。然而,采样的四棵铁杉树(nativeT.)的微生物群落差异显着。 加拿大铁杉和三种非本地铁杉:中国铁杉、杜莫萨铁杉和西氏铁杉。在这些树宿主中,来自 T. 的微生物群落。 杜莫萨和T. chinensis 聚集在一起,来自 T. chinensis 的微生物群落。 加拿大杉和T. sieboldi 与所有其他树种分开。此外,还确定了所有采样树种的具体指示类群。这些结果表明,亚洲铁杉可能无法在东部森林中占据与本土东部铁杉相同的生态位。应开展进一步的工作,以确定铁杉物种和相关微生物群落的差异如何扩大,从而改变涉及铁杉的生物体相互作用。
The hemlock woolly adelgid (HWA) is an insect native to Asia and likely western North America. First reported in eastern North America in 1951, it has devastated eastern hemlock (Tsuga canadensis) populations. Loss of hemlock will greatly affect the structure and function of eastern forests. Susceptibility to adelgid infestation varies within eastern hemlocks and across other hemlock species. Our study was conducted to determine whether eastern hemlocks share a similar stem (phyllosphere) microbial community with other co‐occurring hemlocks and whether community‐level shifts are associated within trees of the same species based on HWA infestation. Surprisingly, we found no difference in microbial community composition or diversity between trees of the same species based on the level of HWA infestation. However, microbial communities varied significantly across the four hemlock trees sampled, nativeT. canadensisand three non‐natives:Tsuga chinensis,Tsuga dumosa, andTsuga sieboldii. Within these tree hosts, microbial communities fromT. dumosaandT. chinensisclustered together, and microbial communities fromT. canadensisandT. sieboldiiclustered separately from all other tree species. Additionally, specific indicator taxa were identified for all the tree species sampled. These results indicate that Asian hemlocks might not fill the same niche in eastern forests as the native eastern hemlock. Further work should be conducted to determine how differences in hemlock species and associated microbial communities might scale up to alter organismal interactions involving hemlocks.
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发表时间: 2014-09-01
影响因子: 2.3
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