Arbuscular mycorrhizal fungal species suppress inducible plant responses and alter defensive strategies following herbivory

Bennett, Alison E.; Bever, James D.; Bowers, M. Deane

doi:10.1007/s00442-009-1338-5

Cited by 117 publications

(110 citation statements)

References 53 publications

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“…Increasingly, the importance of AMF for agricultural sustainability is being recognized (Sanders 2010;Verbruggen and Kiers 2010). Via various attributes, such as nutrient acquisition (Johnson 2010;Smith and Read 2008), pathogen suppression (Lendzemo et al 2005), herbivory protection (Bennett et al 2009;Gange and West 1994) and improved water relations and soil structure (Augé 2001;Wilson et al 2009), mycorrhizal fungi can benefit crop hosts and ecosystem sustainability. For example, recent studies have shown that AMF are fundamental in preventing nutrient loss in modelled grasslands after raininduced leaching events, resulting in an up to 60% reduction of phosphorus loss (Asghari et al 2005;van der Heijden 2010).…”

Section: Introductionmentioning

confidence: 99%

Provision of contrasting ecosystem services by soil communities from different agricultural fields

Verbruggen¹,

Kiers²,

Bakelaar³

et al. 2011

Plant Soil

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Several studies have shown that soil biotic communities from organically managed fields are more diverse and exhibit higher activity levels compared to conventionally managed fields. The impact of these different soil communities on plant productivity and the provision of soil ecosystem services are, however, still unclear. Here, we test the effects of soil inoculation from each of three organic and three conventional maize fields on maize productivity and nutrient loss during leaching events induced by simulated rain. In particular, we examine whether differences in productivity and nutrient loss are related to the abundance and species composition of arbuscular mycorrhizal (AM) fungi. We hypothesized that soil biota from organically managed fields would improve maize growth and reduce nutrient leaching significantly more than those from conventionally managed fields. In contrast to our hypothesis, we found that plant productivity was negatively affected by soil inoculation, and this Plant Soil (2012) effect was stronger with inoculum from organic fields. Plant productivity was inversely correlated with AMF abundance, suggesting that enhanced carbon allocation to AMF is at least in part responsible for plant growth reduction under our experimental conditions. However, soil inoculation did alter the ecological functioning of the system by reducing phosphorus leaching losses after simulated rain. Moreover, these leaching losses were lower with increased hyphal density and were related with abundance of particular AMF types, suggesting that abundance of AMF and their community composition may be useful indicators of phosphorus leaching losses. The results demonstrate that soil communities from different agricultural fields vary in their impact on plant productivity and nutrient leaching losses. The results further indicate that there is a potential tradeoff between positive effects of soil communities on sustainability and negative effects on crop productivity.

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Section: Introductionmentioning

confidence: 99%

Provision of contrasting ecosystem services by soil communities from different agricultural fields

Verbruggen¹,

Kiers²,

Bakelaar³

et al. 2011

Plant Soil

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“…Bennett et al, 2006;Koricheva et al, 2009;Gange, 2007;Hartley and Gange, 2009). As known from insect herbivores (Bennett and Bever, 2007;Bennett et al, 2009), also the effects of AM on spider mite performance and plant response are highly variable and depend on the AM fungus species involved (Nishida et al, 2010). In an outdoor glass chamber experiment, Lotus japonicus (Regel) Larsen was inoculated with four different AM fungus species, namely Gigas- Compounds associated with induced resistance to herbivores in general and spider mites in particular were differentially altered, depending on the AM fungus species (Nishida et al, 2010).…”

Section: Spider Mites and Belowground Symbiontsmentioning

confidence: 99%

Plant-mediated aboveground-belowground interactions: the spider mite perspective

Hoffmann¹,

Schausberger²

2012

Acarologia

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“…In tripartite interactions, the identity of all three interacting species is important and may influence the results of interactions (Bennett et al 2009;Kempel et al 2013;Zytynska et al 2014;Parker et al 2017). A recent study by Bonte et al (2010) found that spider mites adapted to the physiological change in snap beans induced by AMF in just fifteen generations.…”

Section: Discussionmentioning

confidence: 99%

“…However, the effect of symbiotic relationships on herbivores is not straightforward. For example, arbuscular mycorrhizal fungi (AMF) have been found to both induce and suppress herbivore defense in plants; the outcome appears to depend on the identity of all participants (Bennett et al 2009;Kempel et al 2013). White clover that was inoculated with rhizobia showed increased growth for both the plant and herbivore (Kempel et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Third-party mutualists have contrasting effects on host invasion under the enemy-release and biotic-resistance hypotheses

et al. 2017

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Plants engage in complex multipartite interactions with mutualists and antagonists, but these interactions are rarely included in studies that explore plant invasiveness. When considered in isolation, we know that beneficial microbes can enhance an exotic plant's invasive ability and that herbivorous insects often decrease an exotic plant's likeliness of success. However, the effect of these partners on plant fitness has not been well characterized when all three species coevolve. We use computational evolutionary modeling of a trait-based system to test how microbes and herbivores simultaneously coevolving with an invading plant affect the invaders' probability of becoming established. Specifically, we designed a model that explores how a beneficial microbe would influence the outcome of an interaction between a plant and herbivore. To model novel interactions, we included a phenotypic trait shared by each species. Making this trait continuous and selectable allows us to explore how trait similarities between coevolving plants, herbivores and microbes affect fitness. Using this model, we answer the following questions: (1) Can a beneficial plant-microbe interaction influence the evolutionary outcome of antagonistic interactions between plants and herbivores? (2) How does the initial trait similarity between interacting organisms affect the likelihood of plant survival in novel locations? (3) Does the effect of tripartite interactions on the invasion success of a plant depend on whether organisms interact through trait similarity [ -017-9912-5 plants to invade under the ERH but that beneficial microbes increase the probability of plant survival in a novel range under both hypotheses. To our knowledge, this model is the first to use tripartite interactions to explore novel species introductions. It represents a step towards gaining a better understanding of the factors influencing establishment of exotic species to prevent future invasions.

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Arbuscular mycorrhizal fungal species suppress inducible plant responses and alter defensive strategies following herbivory

Cited by 117 publications

References 53 publications

Provision of contrasting ecosystem services by soil communities from different agricultural fields

Provision of contrasting ecosystem services by soil communities from different agricultural fields

Plant-mediated aboveground-belowground interactions: the spider mite perspective

Third-party mutualists have contrasting effects on host invasion under the enemy-release and biotic-resistance hypotheses

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