Beneficial worm allies warn plants of parasite attack below‐ground and reduce above‐ground herbivore preference and performance

Kamali, Shokoofeh; Javadmanesh, Ali; Stelinski, Lukasz L.; Kyndt, Tina; Seifi, Alireza; Cheniany, Monireh; Zakiaghl, Mohammad; Hosseini, Mojtaba; Heydarpour, Mahyar; Asili, Javad; Karimi, Javad

doi:10.1111/mec.16254

Cited by 7 publications

(2 citation statements)

References 97 publications

(178 reference statements)

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“…Below-ground plant and root-herbivore interactions can affect above-ground plantherbivore interactions [153,154]. Some nematodes are important entomopathogens that can impact the performance of attacking herbivores (below-and above-ground) on host plants by inducing plant defence mechanisms [155]. For example, entomopathogenic nematodes (EPNs) have been shown to activate polyphenol oxidase and guaiacol peroxidase activity in roots and, at the same time, suppress the same activity in above-ground tissues [155,156].…”

Section: Entomopathogenic Nematodesmentioning

confidence: 99%

“…Some nematodes are important entomopathogens that can impact the performance of attacking herbivores (below-and above-ground) on host plants by inducing plant defence mechanisms [155]. For example, entomopathogenic nematodes (EPNs) have been shown to activate polyphenol oxidase and guaiacol peroxidase activity in roots and, at the same time, suppress the same activity in above-ground tissues [155,156]. However, limited research has been conducted to test the efficacy of EPNs against aphids, particularly M. persicae; Steinernema carpocapsae (Weiser) showed low infectivity when tested against M. persicae [157].…”

Section: Entomopathogenic Nematodesmentioning

confidence: 99%

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Peach–Potato Aphid Myzus persicae: Current Management Strategies, Challenges, and Proposed Solutions

et al. 2023

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The peach–potato aphid, Myzus persicae (Sulzer), is one of the most important pests of economic crops. It damages the plant directly by consuming nutrients and water and indirectly by transmitting plant viruses. This pest has the unenviable title of having resistance to more insecticides than any other herbivorous insect pest. Due to the development of its resistance to chemical pesticides, it is necessary to find other control options. Consequently, increased efforts worldwide have been undertaken to develop new management approaches for M. persicae. In this review, we highlight the problems associated with the peach–potato aphid, its economic importance, and current management approaches. This review also describes the challenges with current management approaches and their potential solutions, with special focus given to the evolution of insecticidal resistance and sustainable pest management strategies, such as biocontrol agents, entomopathogens, the use of natural plant-derived compounds, and cultural methods. Furthermore, this review provides some successful approaches from the above eco-friendly pest management strategies that show high efficacy against M. persicae.

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Section: Entomopathogenic Nematodesmentioning

confidence: 99%

Section: Entomopathogenic Nematodesmentioning

confidence: 99%

Peach–Potato Aphid Myzus persicae: Current Management Strategies, Challenges, and Proposed Solutions

et al. 2023

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Volatile organic compounds released from entomopathogenic nematode‐infected insect cadavers for the biocontrol of Meloidogyne incognita

Li,

Wei,

Pei

et al. 2024

Pest Management Science

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BACKGROUNDRoot‐knot nematodes (RKNs), Meloidogyne spp., are one of the most destructive polyphagous plant‐parasitic nematodes. They pose a serious threat to global food security and are difficult to control. Entomopathogenic nematodes (EPNs) show promise in controlling RKNs. However, it remains unclear whether the volatile organic compounds (VOCs) emitted from EPN‐infected cadavers can control RKNs.RESULTSWe investigated the fumigation activity of VOCs released from cadavers infected by five different species of EPNs on RKNs in Petri dishes, and found that VOCs released from Steinernema feltiae (SN strain) and S. carpocapsae (All strain) infected cadavers had a significant lethal effect on second‐stage juveniles (J2s) of Meloidogyne incognita. The VOCs released from the cadavers infected with S. feltiae were analyzed using SPME‐GC/MS. Dimethyl disulfide (DMDS), tetradecane, pentadecane, and butylated hydroxytoluene (BHT), were selected for a validation experiment with pure compounds. The DMDS compound had significant nematicidal activity and repelled J2s. DMDS also inhibited egg hatching and the invasion of tomato roots by J2s. In a pot experiment, the addition of S. feltiae‐infected cadavers and cadavers wrapped with a 400‐mesh nylon net also significantly reduced the population of RKNs in tomato roots after 7 days. The number of root knots and eggs was reduced by 58% and 74.34%, respectively, compared to the control.CONCLUSIONThese results suggested that the VOCs emitted by the EPN‐infected cadavers affected various developmental stages of M. incognita and thus have the potential to be used in controlling RKNs through multiple methods. © 2024 Society of Chemical Industry.

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Direct antagonistic effect of entomopathogenic nematodes and their symbiotic bacteria on root-knot nematodes migration toward tomato roots

Wei

et al. 2022

Plant Soil

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Aims Negative interactions in the rhizosphere between entomopathogenic nematodes (EPNs) and plantparasitic nematodes, such as root-knot nematodes (RKNs), have been documented over the past two decades but the mechanisms and dynamics of such interactions remain largely elusive.Methods Here, we evaluated the effect of inoculation position of two EPN species, Steinernema feltiae and Heterorhabditis bacteriophora, as well as different facets of the EPN-bacterial symbiont complex on the migration of RKNs toward tomato roots, both in sand and in Pluronic gel conditions.Results When EPNs were placed between the position of the RKNs and the roots, the movement of RKNs toward the roots was inhibited. We observed this same pattern both in sand and in Pluronic F-127 (PF-127) gel and for two species of EPNs. We also observed that different components of the EPNs/bacterial symbiont complex (bacteria separate from the nematodes vs. the nematode-bacterium complex), and particularly the cell-free supernatant produced by the bacterial culture, displayed inhibitory effects on RKNs.Conclusions Therefore, the EPNs/bacterial complex, by slowing down the movement of RKNs toward the host plant roots, can function as an effective biocontrol strategy. By screening for the most repulsive strains of EPNs that are also effective against insect pests, such combined target suppression should alleviate EPNs application costs in integrated pest management practices.

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Beneficial worm allies warn plants of parasite attack below‐ground and reduce above‐ground herbivore preference and performance

Cited by 7 publications

References 97 publications

Peach–Potato Aphid Myzus persicae: Current Management Strategies, Challenges, and Proposed Solutions

Peach–Potato Aphid Myzus persicae: Current Management Strategies, Challenges, and Proposed Solutions

Volatile organic compounds released from entomopathogenic nematode‐infected insect cadavers for the biocontrol of Meloidogyne incognita

Direct antagonistic effect of entomopathogenic nematodes and their symbiotic bacteria on root-knot nematodes migration toward tomato roots

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