Mycorrhizal composition influences plant anatomical defense and impacts herbivore growth and survival in a life-stage dependent manner

Malik, Rondy J.; Ali, Jared G.; Bever, James D.

doi:10.1016/j.pedobi.2017.12.004

Cited by 21 publications

(13 citation statements)

References 65 publications

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“…Plant production of such physical defense structures as well as maintenance of microbial mutualisms can incur metabolic costs, indicating a potential trade-off for plants. A recent study found that tomato plants colonized by AMF had reduced trichome densities and increased herbivore performance [128]. Although not explicitly tested in this study, insect herbivores could potentially detect a decreased investment in physical defense structures in microbe-associated plants when making foraging or oviposition decisions to enhance their performance or fitness.…”

Section: Influence Of Beneficial Microbes On Plant-produced Visual Cuesmentioning

confidence: 88%

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

Grunseich

Thompson

Aguirre

et al. 2019

Plants

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There is increasing evidence that plant-associated microorganisms play important roles in shaping interactions between plants and insect herbivores. Studies of both pathogenic and beneficial plant microbes have documented wide-ranging effects on herbivore behavior and performance. Some studies, for example, have reported enhanced insect-repellent traits or reduced performance of herbivores on microbe-associated plants, while others have documented increased herbivore attraction or performance. Insect herbivores frequently rely on plant cues during foraging and oviposition, suggesting that plant-associated microbes affecting these cues can indirectly influence herbivore preference. We review and synthesize recent literature to provide new insights into the ways pathogenic and beneficial plant-associated microbes alter visual, olfactory, and gustatory cues of plants that affect host-plant selection by insect herbivores. We discuss the underlying mechanisms, ecological implications, and future directions for studies of plant-microbial symbionts that indirectly influence herbivore behavior by altering plant traits.

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Section: Influence Of Beneficial Microbes On Plant-produced Visual Cuesmentioning

confidence: 88%

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

Grunseich

Thompson

Aguirre

et al. 2019

Plants

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“…In one study, Goverde et al (2000) found three AM fungal species differentially affected insect herbivore performance, although neither the AM fungi nor resistanceconferring mechanisms were identified. Building on this, and earlier pioneering work (Gange, 1996), research has continued to establish more broadly how different fungal species, or combinations of species, can deliver different resistance outcomes for plants (Gange, 2001;Wooley & Paine, 2007;Bennett et al, 2009;Currie et al, 2011;Barber et al, 2013;Roger et al, 2013;He et al, 2017;Malik et al, 2018). Furthermore, research has shown that different isolates of the same AM fungal species can have distinct impacts on plant-herbivore interactions, highlighting a potential role for within-species genetic variation of AM fungi (see Box 1).…”

Section: Resistancementioning

confidence: 96%

“…A number of additional experiments have now shown how different species, or levels of species richness, affect different herbivore-associated defence compounds (Ceccarelli et al, 2010;Nishida et al, 2010;Jung et al, 2012;Zubek et al, 2015;Malik et al, 2018;Frew & Wilson, 2021). We also have a better understanding of the AM fungal species-specific impacts on phytohormonal signalling that underpin mycorrhiza-induced resistance (Jung et al, 2012;Cameron et al, 2013).…”

Section: Forummentioning

confidence: 99%

Plant herbivore protection by arbuscular mycorrhizas: a role for fungal diversity?

et al. 2021

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“…There was no evidence for priming of JA defenses by AMF, and AMF even mitigated herbivore-induced defense gene activation under low R:FR light. It should be noted that a potential caveat of our study is that we only used a single widely studied species of AMF, and that studies of a broader set of AMF species is necessary to generalize conclusions about AMF effects on plant-enemy interactions [ 85 ]. Several controlled growth chamber experiments show effectiveness of applying mycorrhizal products in stimulating plant and improving resistance; however, a growing number of studies have also highlighted their unpredictability [ 19 , 86 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Light Quality on Colonization of Tomato Roots by AMF and Implications for Growth and Defense

Saha

Kaloterakis

Harvey

et al. 2022

Plants

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Beneficial soil microbes can enhance plant growth and defense, but the extent to which this occurs depends on the availability of resources, such as water and nutrients. However, relatively little is known about the role of light quality, which is altered during shading, resulting a low red: far-red ratio (R:FR) of light. We examined how low R:FR light influences arbuscular mycorrhizal fungus (AMF)-mediated changes in plant growth and defense using Solanum lycopersicum (tomato) and the insect herbivore Chrysodeixis chalcites. We also examined effects on third trophic level interactions with the parasitoid Cotesia marginiventris. Under low R:FR light, non-mycorrhizal plants activated the shade avoidance syndrome (SAS), resulting in enhanced biomass production. However, mycorrhizal inoculation decreased stem elongation in shaded plants, thus counteracting the plant’s SAS response to shading. Unexpectedly, activation of SAS under low R:FR light did not increase plant susceptibility to the herbivore in either non-mycorrhizal or mycorrhizal plants. AMF did not significantly affect survival or growth of caterpillars and parasitoids but suppressed herbivore-induced expression of jasmonic acid-signaled defenses genes under low R:FR light. These results highlight the context-dependency of AMF effects on plant growth and defense and the potentially adverse effects of AMF under shading.

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Mycorrhizal composition influences plant anatomical defense and impacts herbivore growth and survival in a life-stage dependent manner

Cited by 21 publications

References 65 publications

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

Plant herbivore protection by arbuscular mycorrhizas: a role for fungal diversity?

Effects of Light Quality on Colonization of Tomato Roots by AMF and Implications for Growth and Defense

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