Invasive Non-native Plants Alter the Occurrence of Arbuscular Mycorrhizal Fungi and Benefit from This Association

Greipsson, Sigurdur; DiTommaso, Antonio

doi:10.3368/er.24.4.236

Cited by 44 publications

(53 citation statements)

References 24 publications

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“…Notwithstanding, opposite findings have also been reported. The invasive species possessed more intense AMF infection than species in the resident community (Marler et al 1999, Greipsson andDiTommaso 2006), and there are several invasive plants heavily colonised by AMF in their new habitats (e.g. Ambrosia artemisiifolia, Kovács and Bagi 2001, Kovács and Szigetvári 2002, Fumanal et al 2006).…”

Section: Introductionmentioning

confidence: 99%

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Arbuscular mycorrhizal colonisation of roots of grass species differing in invasiveness

2013

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Recent research indicates that the soil microbial community, particularly arbuscular mycorrhizal fungi (AMF), can influence plant invasion in several ways. We tested if 1) invasive species are colonised by AMF to a lower degree than resident native species, and 2) AMF colonisation of native plants is lower in a community inhabited by an invasive species than in an uninvaded resident community. The two tests were run in semiarid temperate grasslands on grass (Poaceae) species, and the frequency and intensity of mycorrhizal colonisation, and the proportion of arbuscules and vesicles in plant roots have been measured. In the first test, grasses representing three classes of invasiveness were included: invasive species, resident species becoming abundant upon disturbance, and non-invasive native species. Each class contained one C3 and one C4 species. The AMF colonisation of the invasive Calamagrostis epigejos and Cynodon dactylon was consistently lower than that of the non-invasive native Chrysopogon gryllus and Bromus inermis, and contained fewer arbuscules than the post-disturbance dominant resident grasses Bothriochloa ischaemum and Brachypodium pinnatum. The C3 and C4 grasses behaved alike despite their displaced phenologies in these habitats. The second test compared AMF colonisation for sand grassland dominant grasses Festuca vaginata and Stipa borysthenica in stands invaded by either C. epigejos or C. dactylon, and in the uninvaded natural community. Resident grasses showed lower degree of AMF colonisation in the invaded stand compared to the uninvaded natural community with F. vaginata responding so to both invaders, while S. borysthenica responding to C. dactylon only. These results indicate that invasive grasses supposedly less reliant on AMF symbionts have the capacity of altering the soil mycorrhizal community in such a way that resident native species can establish a considerably reduced extent of the beneficial AMF associations, hence their growth, reproduction and ultimately abundance may decline. Accumulating evidence suggests that such indirect influences of invasive alien plants on resident native species mediated by AMF or other members of the soil biota is 1 probably more the rule than the exception.Keywords: arbuscular mycorrhizal fungi (AMF), Calamagrostis epigejos, Cynodon dactylon, grasses, invasive plants, semiarid temperate grassland.Nomenclature: Tutin et al. (1964Tutin et al. ( -1993.Abbreviations: AMF -Arbuscular Mycorrhizal Fungi; a% -percentage arbuscule occurence of the AMF colonised root section; A% -percentage arbuscule occurence of the whole root; F% -frequency of root segments colonised by AMF; M% -intensity of mycorrhizal colonisation; v% -percentage vesicle occurence of the AMF colonised root section; V% -percentage vesicle occurence of the whole root;

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Section: Introductionmentioning

confidence: 99%

“…In its new habitat, the invasive plant can alter the soil microbial community (Kourtev et al 2002, Batten et al 2006, Greipsson and DiTommaso 2006. This can be achieved directly through exuded allelochemicals decimating indigenous AMFs (Stinson et al 2006, Zhang et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal colonisation of roots of grass species differing in invasiveness

2013

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“…AMF may either be disrupted or harnessed by aggressive invasive plant species, resulting in altered native fungal communities in the soil as the invader attains dominance in the system (van der Heijden et al 1998, Daniell et al 2001, Greipsson and DiTommaso 2006, Bastias et al 2007, Curlevski et al 2010. Mummey et al (2005) used T-RFLP and multivariate analyses to show that AMF communities associating with a common forage grass species Dactylis glomerata, naturalized in mid-western US, shifted to reflect the community composition associated with a noxious weed native to eastern Europe, Centaurea maculosa, post invasion.…”

Section: Discussionmentioning

confidence: 99%

“…Given that AMF are functionally diverse and confer differential benefits to plants (Sanders and Fitter 1992, Bever et al 1996, Bever 2002, Klironomos 2003, responses of AMF communities to invaders would be potentially highly disadvantageous to established native species (Helgason et al 2002, Kourtev et al 2002, Greipsson and DiTommaso 2006, Hawkes et al 2006, Stinson et al 2006, and would cause shifts in native plant communities (van der Heijden et al 1998). Thus, disruptions to community plant-AMF associations in local ecosystems may support system dominance by invaders (van der Heijden et al 1998, Daniell et al 2001, Helgason et al 2002, Kourtev et al 2002, Greipsson and DiTommaso 2006, Hawkes et al 2006, Bastias et al 2007, Curlevski et al 2010.…”

Section: Introductionmentioning

confidence: 99%

“…Arbuscular mycorrhizal plant-fungal symbioses form highly specialized 'nutrient-exchange' structures (vesicles and arbuscules) at the plant-fungus interface and are recognized as being a particularly beneficial group of root endophytes. Plants associating with arbuscular mycorrhizal fungi are typically more competitive and better able to tolerate environmental stresses than are non-mycorrhizal or poorly colonized plants (Biermann and Linderman 1983, Daniell et al 2001, Bianciotto and Bonfante 2002, Vandenkoornhuyse et al 2002, Bonfante 2003, Brundrett 2004, DeBellis and Widden 2006, Greipsson and DiTommaso 2006, Parniske 2008, Shah et al 2010. AMF are also known to provide protection from a variety of microbial pathogens to their host plants (Newsham et al 1994, Borowicz 2001, Klironomos 2002, Pozo and Azćon-Aguilar 2007, Van der Putten et al 2007, Appoloni et al 2008, Mogg et al 2008, Krüger et al 2009, Wehner et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of fungal root colonizers of the invasive plant Vincetoxicum rossicum and co-occurring local native plants in a field and woodland area in Southern Ontario

Bongard¹,

Butler²,

Fulthorpe³

2013

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Fungal communities forming associations with plant roots have generally been described as ranging from symbiotic to parasitic. Disruptions to these associations consequently can have significant impacts on native plant communities. We examined how invasion by Vincetoxicum rossicum, a plant native to Europe, can alter both the arbuscular mycorrhizal fungi, as well as the general fungal communities associating with native plant roots in both field and woodland sites in Southern Ontario. In two different sites in the Greater Toronto Area, we took advantage of invasion by V. rossicum and neighbouring uninvaded sites to investigate the fungal communities associating with local plant roots, including goldenrod (Solidago spp.), wild red raspberry (Rubus idaeus), Canada anemone (Anemone canadensis), meadow rue (Thalictrum dioicum), and wild ginger (Asarum canadense). Fungi colonizing roots were characterized with terminal restriction fragment length polymorphism (T-RFLP) analysis of amplified total fungal (TF) and arbuscular mycorrhizal fungal (AMF) ribosomal fragments. We saw a significant effect of the presence of this invader on the diversity of TF phylotypes colonizing native plant roots, and a composition shift of both the TF and AMF community in native roots in both sites. In native communities invaded by V. rossicum, a significant increase in richness and colonization density of TF suggests that invaders such as V. rossicum may be able to influence the composition of soil fungi available to natives, possibly via mechanisms such as increased carbon provision or antibiosis attributable to unique root exudates. ReSeARCh ARtICle Launched to accelerate biodiversity conservation A peer-reviewed open-access journalCindy L. Bongard et al. / Nature Conservation 4: 55-75 (2013) 56

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Biomass allocation ofVincetoxicum rossicumandV. nigrumin contrasting competitive environments

DiTommaso

Averill

Qin

et al. 2021

American J of Botany

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Understanding how drought and biomass allocation patterns influence competitive ability can help identify traits related to invasiveness and guide management. Vincetoxicum nigrum and V. rossicum are increasingly problematic herbaceous perennial vines in the northeastern United States and southeastern Canada. Methods: Using a greenhouse experiment, we investigated how biomass allocation and competition intensity of Vincetoxicum spp. responded to four competitive regimes at two levels of soil water availability in the presence of conspecific or congeneric neighbors. Results: Soil moisture was the most important influence on growth and biomass allocation. Vincetoxicum nigrum had a greater capacity for growth and reproduction than V. rossicum, especially under drought. Drought reduced the probability of reproduction for V. rossicum. Vincetoxicum rossicum had a higher root-to-shoot ratio than V. nigrum under adequate soil moisture. This difference more than doubled under drought. Under interspecific competition, V. nigrum maximized its biomass, while V. rossicum limited aboveground growth and reproduction. Root-only competition increased shoot and root biomass relative to shoot-only competition. The effects of root and shoot competition were additive under interspecific competition, but interacted under intraspecific competition (negative interaction under drought and positive interaction under sufficient soil moisture). Conclusions: Management strategies targeting mixed populations of V. rossicum and V. nigrum are most important under ample water availability. Under drought conditions, strategies focused on V. nigrum should effectively limit Vincetoxicum growth and seed reproduction. Phenotypic plasticity and the positive competition intensity associated with drought in monocultures may contribute to drought resistance in these invasive species.

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Invasive Non-native Plants Alter the Occurrence of Arbuscular Mycorrhizal Fungi and Benefit from This Association

Cited by 44 publications

References 24 publications

Arbuscular mycorrhizal colonisation of roots of grass species differing in invasiveness

Arbuscular mycorrhizal colonisation of roots of grass species differing in invasiveness

Investigation of fungal root colonizers of the invasive plant Vincetoxicum rossicum and co-occurring local native plants in a field and woodland area in Southern Ontario

Biomass allocation ofVincetoxicum rossicumandV. nigrumin contrasting competitive environments

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