A soil bacterium can shape belowground interactions between maize, herbivores and entomopathogenic nematodes

Disi, Joseph Onwusemu; Mohammad, Hassan Kamrul; Lawrence, Kathy; Kloepper, Joseph W.; Fadamiro, Henry Y.

doi:10.1007/s11104-019-03957-7

Cited by 29 publications

(12 citation statements)

References 43 publications

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“…For instance, an aboveground foliar endophyte of a grass hybrid increased belowground CO 2 and suppressed root volatile emissions, repelling a foraging root herbivore [52]. PGPR associating with maize roots were recently shown to alter root VOC profiles, including E-β-caryophyllene production [149,150]. However, maize roots only enhanced production of E-β-caryophyllene following root herbivore damage, suggesting ISR-mediated priming of defenses in roots following herbivory [149].…”

Section: Influence Of Beneficial Microbes On Plant-produced Olfactorymentioning

confidence: 99%

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 Olfactorymentioning

confidence: 99%

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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“…It has been well-documented that colonization by PGPRs can confer resistance to insect pests that feed on shoots or roots (Rasmann et al, 2017). These effects range from repellence and weight reduction effects on larvae (Disi et al, 2019), to an increase in nymph mortality (Dorta et al, 2020). Colonization by PGPRs can also reduce the feeding period and reproductive rate of some insects (Rashid et al, 2017).…”

Section: Plant Growth Promoting Rhizobacteria (Pgpr)mentioning

confidence: 99%

The Effects of Biostimulants on Induced Plant Defense

et al. 2021

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The search for innovative and alternative methods for chemical control to manage pests is an increasingly growing reality. The use of biostimulants such as plant growth promoting rhizobacteria (PGPR) and humic acids (HA) has been shown to improve many agronomic characteristics of plants while increasing yield. These biostimulants also alter the production of secondary metabolites with consequences for insect herbivores. Here we review the role of biostimulants such as PGPR and HA in promoting and eliciting plant defenses. The cascading effects of using these biostimulants on insect herbivores and their natural enemies are discussed in this context. Synergism between biostimulants are also discussed. The potential role of these products in augmenting agricultural productivity is highlighted as is further need for additional research. This review highlights the potential of this tool to enhance integrated pest management in agricultural production systems, reduce the use of pesticides, and increase the efficiency of fertilization while supporting healthier more pest-resistant plants.

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“…Green leaf volatiles (GLVs) induce maize susceptibility against Colletotrichum graminicola by suppressing SA‐dependent pathways (Gorman et al, 2020). Plant growth–promoting and endophytic bacteria can induce plant volatile synthesis to attract parasitoids and entomopathogens (Bell, Naranjo‐Guevara, Santos, Meadow, & Bento, 2020; Disi, Mohammad, Lawrence, Kloepper, & Fadamiro, 2019; Maggini et al, 2020). By contrast, there has been one report showing that endophytic microbes do not have a significant effect on plant VOC profiles and the behaviour of herbivores and their parasitoids (Moisan et al, 2020).…”

Section: Wireless Communication: Signal Input‐transfer‐output Modelmentioning

confidence: 99%

Social networking in crop plants: Wired and wireless cross‐plant communications

Sharifi

Ryu

2020

Plant Cell & Environment

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The plant‐associated microbial community (microbiome) has an important role in plant–plant communications. Plants decipher their complex habitat situations by sensing the environmental stimuli and molecular patterns and associated with microbes, herbivores and dangers. Perception of these cues generates inter/intracellular signals that induce modifications of plant metabolism and physiology. Signals can also be transferred between plants via different mechanisms, which we classify as wired‐ and wireless communications. Wired communications involve direct signal transfers between plants mediated by mycorrhizal hyphae and parasitic plant stems. Wireless communications involve plant volatile emissions and root exudates elicited by microbes/insects, which enable inter‐plant signalling without physical contact. These producer‐plant signals induce microbiome adaptation in receiver plants via facilitative or competitive mechanisms. Receiver plants eavesdrop to anticipate responses to improve fitness against stresses. An emerging body of information in plant–plant communication can be leveraged to improve integrated crop management under field conditions.

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A soil bacterium can shape belowground interactions between maize, herbivores and entomopathogenic nematodes

Cited by 29 publications

References 43 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

The Effects of Biostimulants on Induced Plant Defense

Social networking in crop plants: Wired and wireless cross‐plant communications

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