Positive feedback between mycorrhizal fungi and plants influences plant invasion success and resistance to invasion.
Positive feedback between mycorrhizal fungi and plants influences plant invasion success and resistance to invasion.
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菌根真菌与植物之间的正反馈影响植物入侵成功和抵抗入侵
DOI：
10.1371/journal.pone.0012380
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发表时间：
2010-08-24
期刊：
影响因子：
3.7
通讯作者：
Chen X
中科院分区：
文献类型：
--
作者：
Zhang Q;Yang R;Tang J;Yang H;Hu S;Chen X
丛枝菌根真菌（AMF）与宿主植物之间的负反馈或正反馈可以促进植物种间的相互作用，但这种反馈如何影响植物的入侵或抗入侵能力尚不清楚。在这里，我们测试了由入侵植物物种诱导的AMF群落的改变如何对入侵植物本身产生反馈，并影响入侵物种与其原生邻居之间的后续相互作用。我们首先研究了入侵杂草加拿大一枝黄花的影响。AMF群落包括五种不同的AMF物种。然后，我们研究了改变AMF社区与本地豆科杂类植物物种Kummerowia striata（Thunb.）辛德尔以及入侵植物和本地植物之间的相互作用。还评估了5个AMF的寄主偏好，以测试AMF是否与入侵物种和/或本地物种形成偏好的互惠关系。我们发现S. canadensis通过增加一种AMF物种（Glomus geosporum）而减少Glomus mosseae（其是该领域的优势物种）来改变AMF孢子组成。寄主选择性试验表明，S. canadensis对AMF物种的丰富度有促进作用。geosporum），最能促进其自身生长。因此，AMF群落的改变增强了入侵S的竞争力。canadensis，以K.纹状体。我们的研究结果表明，入侵S。canadensis改变土壤AMF群落组成，因为真菌的主机偏好。AMF群落组成的这种变化对入侵的S. canadensis本身，并减少AM与本地K. striata，从而使原生K.条纹较少占优势。
Negative or positive feedback between arbuscular mycorrhizal fungi (AMF) and host plants can contribute to plant species interactions, but how this feedback affects plant invasion or resistance to invasion is not well known. Here we tested how alterations in AMF community induced by an invasive plant species generate feedback to the invasive plant itself and affect subsequent interactions between the invasive species and its native neighbors. We first examined the effects of the invasive forb Solidago canadensis L. on AMF communities comprising five different AMF species. We then examined the effects of the altered AMF community on mutualisms formed with the native legume forb species Kummerowia striata (Thunb.) Schindl. and on the interaction between the invasive and native plants. The host preferences of the five AMF were also assessed to test whether the AMF form preferred mutualistic relations with the invasive and/or the native species. We found that S. canadensis altered AMF spore composition by increasing one AMF species (Glomus geosporum) while reducing Glomus mosseae, which is the dominant species in the field. The host preference test showed that S. canadensis had promoted the abundance of AMF species (G. geosporum) that most promoted its own growth. As a consequence, the altered AMF community enhanced the competitiveness of invasive S. canadensis at the expense of K. striata. Our results demonstrate that the invasive S. canadensis alters soil AMF community composition because of fungal-host preference. This change in the composition of the AMF community generates positive feedback to the invasive S. canadensis itself and decreases AM associations with native K. striata, thereby making the native K. striata less dominant.
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影响因子：
4.9
作者：
Bever, JD
通讯作者：
Bever, JD
DOI：
10.2136/sssaj1993.03615995005700040021x
发表时间：
1993-07-01
影响因子：
2.9
作者：
CABRERA, ML;BEARE, MH
通讯作者：
BEARE, MH
影响因子：
56.9
作者：
Callaway, RM;Aschehoug, ET
通讯作者：
Aschehoug, ET
影响因子：
1.7
作者：
Carey, EV;Marler, MJ;Callaway, RM
通讯作者：
Callaway, RM
影响因子：
5
作者：
Gallant, AL;Hansen, AJ;Betz, DW
通讯作者：
Betz, DW