Biogeographic differences in soil biota promote invasive grass response to nutrient addition relative to co-occurring species despite lack of belowground enemy release

Broadbent, Arthur A. D.; Ostle, Nicholas J.; Orwin, Kate H.

doi:10.1007/s00442-018-4081-y

Cited by 10 publications

(4 citation statements)

References 67 publications

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“…The majority of studies describing underlying mechanisms for successful invasion have focused on aboverather than belowground processes, however accumulating evidence suggests soil organisms may be important regulators of plant invasions [37][38][39][40] . Although many invasive plants are mycotrophic (~ 82% 41 , and fungal associations have been shown to both facilitate and hinder invasion success [42][43][44][45][46][47][48][49][50] , the role of AM mycelial networks in the invasion process has not been determined. Further, information on the role of mycorrhizae on invasive plant success is available for only a small number of plant species at this time.…”

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confidence: 99%

“…By doing so, invasive plants strongly affect mycorrhizal symbiosis of native mycorrhizal plants, often reducing native plant competitiveness 46,53 . (ii) The 'enhanced mutualist hypothesis' 52 indicates invasive plants receive greater benefit from the symbiosis than native plants, altering native AM fungal communities and increasing invasive species competitiveness 50,52,54,55 . Therefore, invasive plants in their new range may parasitize local CMNs, deriving disproportionally large benefits compared to their symbiotic costs at the expense of competing native plants.…”

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Arbuscular mycorrhizal fungi favor invasive Echinops sphaerocephalus when grown in competition with native Inula conyzae

Řezáčová

Řezáč

Gryndlerová

et al. 2020

Sci Rep

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In a globalized world, plant invasions are common challenges for native ecosystems. Although a considerable number of invasive plants form arbuscular mycorrhizae, interactions between arbuscular mycorrhizal (AM) fungi and invasive and native plants are not well understood. In this study, we conducted a greenhouse experiment examining how AM fungi affect interactions of co-occurring plant species in the family Asteracea, invasive Echinops sphaerocephalus and native forb of central Europe Inula conyzae. The effects of initial soil disturbance, including the effect of intact or disturbed arbuscular mycorrhizal networks (CMNs), were examined. AM fungi supported the success of invasive E. sphaerocephalus in competition with native I. conyzae, regardless of the initial disturbance of CMNs. The presence of invasive E. sphaerocephalus decreased mycorrhizal colonization in I. conyzae, with a concomitant loss in mycorrhizal benefits. Our results confirm AM fungi represent one important mechanism of plant invasion for E. sphaerocephalus in semi-natural European grasslands.

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confidence: 99%

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confidence: 99%

Arbuscular mycorrhizal fungi favor invasive Echinops sphaerocephalus when grown in competition with native Inula conyzae

Řezáčová

Řezáč

Gryndlerová

et al. 2020

Sci Rep

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“…This corresponds to the fact that more than 80% of neophyte species are mycotrophic (Cronk and Fuller 2013). Several studies have already confirmed the significant role of AMF in the invasions of several plant species (Broadbent et al 2018;Bunn et al 2015;Gucwa-Przepiora et al 2016;Nunez and Dickie 2014;Richardson et al 2000).…”

Section: Introductionmentioning

confidence: 88%

Stable colonization of native plants and early invaders by arbuscular mycorrhizal fungi after exposure to recent invaders from the Asteraceae family

Řezáčová

Řezáč

Líblová

et al. 2021

Invasive plant sci. manag.

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Arbuscular mycorrhizal fungi (AMF, Glomeromycota) are globally distributed symbionts of plant roots. Relationships with arbuscular mycorrhizae can provide crucial support for the establishment of any plant in an unfavorable environment. We hypothesized that invasions of neophytes are associated with changes in the colonization of native plants and early invaders (archeophytes) by AMF. We examined changes in AMF colonization in yarrow Achillea millefolium, wild carrot Daucus carota (native plants), tansy Tanacetum vulgare and false oat-grass Arrhenatherum elatius (archeophytes) in response to the invasion of four neophytes from the Asteraceae family, namely great globe-thistle Echinops sphaerocephalus, New York aster Symphyotrichum novi-belgii agg., annual fleabane Erigeron annuus, and Canada goldenrod Solidago canadensis. We found that the AMF colonization of the Asteraceae neophytes was high in the studied monodominant invasions, and the AMF colonization of the neophytes was higher than or equal to that of the studied native plants and archeophytes. Changes in plant dominance did not serve as predictors of the extent of AMF colonization of the native plants and archeophytes despite the invaded plots being associated with strong changes in the availability of primary and secondary mineral nutrients. The absence of a response of AMF colonization of native and archeophyte plant species to the invasion of neophytes suggests that AMF are passengers, rather than drivers, in the course of Asteraceae invasions in central European environments.

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“…而养分、光照、温度等环境因素也会影响入侵植物和本地植物之间的竞争(Suding et al, 2004;Bradley et al, 2010;Verlinden et al, 2014;Broadbent et al, 2018)。 …”

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Advances in root foraging behavior of exotic invasive plants

Xue¹,

Su²,

Yao³

et al. 2020

Biodiversity Science

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Nutrient distribution within soils is highly spatially heterogenous, forcing plant root foraging behavior to adapt to heterogeneous soil nutrients. By adjusting root foraging scales, foraging precision and rate, plants can maximize soil nutrients. Successful invaders are heavily influenced by soil nutrients and other environmental conditions (e.g. water content, light, etc.) as successful invasion depends on the successful competitive interaction of an exotic species with a native species. In recent years, the foraging behavior of exotic invasive plants has attracted more attention, and studies are increasing worldwide. To date, foraging behavior studies have found: (1) Invasive plants have increased root foraging abilities compared to native plants, although the trade-off between foraging scale and precision are uncertain. (2) Soil nutrient heterogeneity influences the competitive outcome between invasive and native plants, as competition alters root foraging strategy. (3) Arbuscular mycorrhizal fungi (AMF) facilitate root foraging of invasive plants, and invasive plants experience positive feedbacks with invasion by altering their AMF preference. Additionally, the interaction between AMF and native plants can influence the competitive ability of invasive plants. Further studies are necessary to understand the relationship between interspecific competition and AMF on root foraging behavior of invasive plants in heterogeneous nutrient conditions. Due to global change, root foraging strategies and related mechanisms of invasive species may be altering. Increased research on root foraging behavior in successful exotic plant invasions can provide a greater understanding of these mechanisms and a theoretical basis for control and management of invasive plants through nutrient regulation.

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Biogeographic differences in soil biota promote invasive grass response to nutrient addition relative to co-occurring species despite lack of belowground enemy release

Cited by 10 publications

References 67 publications

Arbuscular mycorrhizal fungi favor invasive Echinops sphaerocephalus when grown in competition with native Inula conyzae

Arbuscular mycorrhizal fungi favor invasive Echinops sphaerocephalus when grown in competition with native Inula conyzae

Stable colonization of native plants and early invaders by arbuscular mycorrhizal fungi after exposure to recent invaders from the Asteraceae family

Advances in root foraging behavior of exotic invasive plants

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