Indirect interactions between arbuscular mycorrhizal fungi and Spodoptera exigua alter photosynthesis and plant endogenous hormones

He, Lei; Li, Changyou; Runjin, Liu

doi:10.1007/s00572-017-0771-2

Cited by 58 publications

(53 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The general increase in foliar cardenolides mediated by AMF was not a simple consequence of improved plant nutrition; there were no clear associations between cardenolide expression and either foliar nutrient concentrations or plant biomass. Instead, AMF inoculation may have increased defense metabolites through interactions with phytohormonal signaling pathways (García- Garrido et al 2002, Jung et al 2012, Song et al 2013, He et al 2017. The induction of cardenolides in milkweeds is related to bursts in JA concentrations .…”

Section: Effects Of Amf and Herbivores On Aboveground Defensesmentioning

confidence: 99%

“…Plant responses to herbivore feeding are also shaped by interactions with belowground microbial symbionts, such as arbuscular mycorrhizal fungi (AMF) , Kempel et al 2010, Babikova et al 2014, Wang et al 2015, Minton et al 2016, He et al 2017. AMF colonize the roots of over 80% of plant species globally and provide nutrients and water to plants in exchange for sugars (Wang and Qiu 2006, Smith and Read 2008, Soudzilovskaia et al 2015.…”

Section: Introductionmentioning

confidence: 99%

“…AMF interact with plant defensive signaling pathways, generally upregulating the JA pathway while suppressing the SA pathway, in addition to interacting with various other plant hormones (Jung et al 2012, Cameron et al 2013, Bucher et al 2014, Gutjahr 2014. By altering plant nutrient uptake and interacting with plant defensive signaling pathways, AMF alter plant nutritive quality and resistance traits, and prime plants to defend against attack, leading to greater and more rapid expression of defense genes after damage (Jung et al 2012, Song et al 2013, He et al 2017. The association with AMF is often mutualistic for plants, as AMF frequently stimulate plant growth and mitigate abiotic and pathogen stress (Smith and Read 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, shootfeeding herbivores above ground influence AMF colonization of plant roots Bennett 2009, Barto andRillig 2010), thereby completing an important feedback loop between above-and belowground organisms (Hunter 2016). This may occur through induced changes in carbon allocation in plants Whitham 2002, Gehring andBennett 2009) or altered phytohormonal signaling (Landgraf et al 2012, Fragoso et al 2014, He et al 2017. Because AMF colonization affects the performance of herbivores (Koricheva et al 2009), and AMF perform important ecosystem services, such as soil aggregation, nutrient cycling, and carbon sequestration (Smith and Reid 2008), herbivoreinduced changes in levels of AMF colonization could have community and ecosystem-level consequences.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Arbuscular mycorrhizal fungi mediate herbivore‐induction of plant defenses differently above and belowground

Meier

Hunter

2018

Oikos

View full text Add to dashboard Cite

Plants are exposed to herbivores and symbionts above and below ground. Herbivores above ground alter plant defenses in both leaves and roots, affecting plant–herbivore interactions above and below ground. Root symbionts, such as arbuscular mycorrhizal fungi (AMF), also influence the defenses of leaves and roots, and alter plant responses to herbivory. However, we lack an understanding of how AMF mediate plant responses to herbivores simultaneously in above and belowground plant tissues, despite the ubiquity of such interactions and their consequences for ecological communities. In a full factorial experiment, we subjected plants of four milkweed (Asclepias) species under three levels of AMF inoculum availability to damage by aphids Aphis nerii, caterpillars Danaus plexippus, or no herbivores. We then measured foliar and root cardenolides (chemical defenses), leaf toughness, latex exudation (physical defenses), foliar carbon, nitrogen, and phosphorous concentrations, plant biomass, and levels of AMF colonization of roots. Plants inoculated with AMF generally produced tougher leaves with higher cardenolide concentrations than did plants without AMF. In contrast, root cardenolides were altered by AMF inoculum availability in a plant species‐specific manner. The relative induction or suppression of foliar cardenolides and leaf toughness by herbivores was altered strongly by the level of AMF inoculum available to plants. However, AMF did not influence caterpillar‐induction or aphid‐suppression of root cardenolides. In addition, herbivore feeding induced substantial changes in levels of AMF colonization of roots in a plant species‐specific manner. We demonstrate that the availability of AMF in soil alters herbivore induction and suppression of plant defenses strongly, and does so differently in above and belowground plant tissues. Furthermore, we show that herbivore feeding alters levels of AMF colonization substantially, completing a feedback loop between above‐ and belowground organisms. Our study suggests that indirect interactions between AMF and herbivores may have community‐wide consequences by altering plant phenotype above and below ground.

show abstract

Section: Effects Of Amf and Herbivores On Aboveground Defensesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Arbuscular mycorrhizal fungi mediate herbivore‐induction of plant defenses differently above and belowground

Meier

Hunter

2018

Oikos

View full text Add to dashboard Cite

show abstract

“…Meloidogyne incognita ) and tomato disease development. Recently, He et al (2017) reported that AM fungi and their indirect interactions with insect ( Spodoptera exigua ) altered the photosynthesis and plant endogenous hormones of peanut and tomato. Additionally, the application of mycorrhizal inoculation was found to improve carbon sequestration of coalfield soils and thus to be beneficial for the ecological reclamation in mine region (Wang et al 2016b).…”

Section: Mycorrhizal Functionmentioning

confidence: 99%

Presidential address: recent advance of mycorrhizal research in China

Guo

2018

Mycology

View full text Add to dashboard Cite

I am honoured to address as the seventh president of the Mycological Society of China. Mycorrhizal research has a long history in China, including taxonomy, diversity, ecology, molecular biology, and application. Particularly in the past four decades, great progress in mycorrhizal field has been made by Chinese mycologists and ecologists. In this paper, through my own experience, I summarised the main and important advance of recent mycorrhizal researches in terms of mycorrhizal fungal diversity, community, responses to global environmental changes, molecular biology, and function in China. Some perspectives are also proposed for future mycorrhizal studies in China.

show abstract

Density‐ and moisture‐dependent effects of arbuscular mycorrhizal fungus on drought acclimation in wheat

Duan

Luo

Zhu

et al. 2021

Ecological Applications

View full text Add to dashboard Cite

Arbuscular mycorrhizal fungus (AMF) is widely viewed as an ecosystem engineer to help plants adapt to adverse environments. However, a majority of the previous studies regarding AMF's eco‐physiological effects are mutually inconsistent. To clarify this fundamental issue, we conducted an experiment focused on wheat (Triticum aestivum L.) plants with or without AMF (Funneliformis mosseae) inoculation. Two water regimes (80% and 40% field water capacity, FWC80 (CK) and FWC40 (drought stress) and four planting densities (6 or 12 plants per pot as low densities, 24 or 48 plants per pot as high densities) were designed. AMF inoculation did not show significant effects on shoot biomass, grain yield, and water use efficiency (WUE) under the low densities, regardless of water regimes. However, under the high densities, AMF inoculation significantly decreased shoot biomass, grain yield and WUE in FWC80, while it significantly increased these parameters in FWC40, showing density and/or moisture‐dependent effects of AMF on wheat performance. In FWC40, the relationships between reproductive biomass (y‐axis) vs. vegetative biomass (x‐axis) (R‐V), and between grain biomass (y‐axis, sink) vs. leaf biomass (x‐axis, source) fell into a typical allometric pattern (α > 1, P < 0.001), and the AMF inoculation significantly increased the values of α. Yet in FWC80, they were in an isometric pattern (α ≈ 1, P < 0.001) and AMF addition had no significant effects on α. Similarly, AMF did not significantly change the isometric relationship between leaf biomass (i.e., metabolic rate) and shoot biomass (body size) in FWC80, while it significantly decreased the α of allometric relationship between both of them in FWC40 (α > 1, P < 0.001). We therefore, sketched a generalized model of R‐V and sink‐source relationships as affected by AMF, in which AMF inoculation might enhance the capabilities of sink acquisition and utilization under drought stress, while having no significant effect under the well watered conditions. Our findings demonstrate dual density‐ and moisture‐dependent effects of AMF on plant development and provide new insights into current ecological applications of AMF as an ecosystem engineer.

show abstract

Indirect interactions between arbuscular mycorrhizal fungi and Spodoptera exigua alter photosynthesis and plant endogenous hormones

Cited by 58 publications

References 37 publications

Arbuscular mycorrhizal fungi mediate herbivore‐induction of plant defenses differently above and belowground

Arbuscular mycorrhizal fungi mediate herbivore‐induction of plant defenses differently above and belowground

Presidential address: recent advance of mycorrhizal research in China

Density‐ and moisture‐dependent effects of arbuscular mycorrhizal fungus on drought acclimation in wheat

Contact Info

Product

Resources

About