Facultative symbionts are potential agents of symbiont-mediated RNAi in aphids

Li, Tong; Wei, Yongjun; Zhao, Chenchen; Li, Shaojian; Gao, Suxia; Zhang, Yuanchen; Wu, Yuqing; Lu, Chuantao

doi:10.3389/fmicb.2022.1020461

Cited by 5 publications

(2 citation statements)

References 147 publications

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“…These symbionts lack the genes for biosynthesis of cell surface components and have highly reduced genome, but symbiont Candidatus Serratia symbiotica is the first facultative endosymbiont cultured on axenic media which became useful in successful implementation of SMR. Targeting specific gene from host insect via Symbiont mediated RNAi is demonstrated in various insect pests and it may pave the way for novel approach in controlling insect pests ( Li T. et al, 2022 ).…”

Section: Integrated Pest Managementmentioning

confidence: 99%

Role of gut symbionts of insect pests: A novel target for insect-pest control

Rupawate¹,

Roylawar²,

Khandagale

et al. 2023

Front. Microbiol.

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Insects possess beneficial and nuisance values in the context of the agricultural sector and human life around them. An ensemble of gut symbionts assists insects to adapt to diverse and extreme environments and to occupy every available niche on earth. Microbial symbiosis helps host insects by supplementing necessary diet elements, providing protection from predators and parasitoids through camouflage, modulation of signaling pathway to attain homeostasis and to trigger immunity against pathogens, hijacking plant pathways to circumvent plant defence, acquiring the capability to degrade chemical pesticides, and degradation of harmful pesticides. Therefore, a microbial protection strategy can lead to overpopulation of insect pests, which can drastically reduce crop yield. Some studies have demonstrated increased insect mortality via the destruction of insect gut symbionts; through the use of antibiotics. The review summarizes various roles played by the gut microbiota of insect pests and some studies that have been conducted on pest control by targeting the symbionts. Manipulation or exploitation of the gut symbionts alters the growth and population of the host insects and is consequently a potential target for the development of better pest control strategies. Methods such as modulation of gut symbionts via CRISPR/Cas9, RNAi and the combining of IIT and SIT to increase the insect mortality are further discussed. In the ongoing insect pest management scenario, gut symbionts are proving to be the reliable, eco-friendly and novel approach in the integrated pest management.

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Section: Integrated Pest Managementmentioning

confidence: 99%

Role of gut symbionts of insect pests: A novel target for insect-pest control

Rupawate¹,

Roylawar²,

Khandagale

et al. 2023

Front. Microbiol.

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“…In another very recent study, a long-noncoding RNA lncRNA molecule from the endosymbiont Wolbachia was found to activate anti-dengue defense pathway in Aedes aegypti mosquitoes, indicating the possibilities of ncRNA communication and modulation of virus insect vectors [ 107 ]. Findings such as these, and the important role of endosymbionts in the life cycle of insect pests and/or virus transmission, have also tempted researchers to elaborate on symbiont-mediated RNAi in aphids [ 108 ]. They also support the idea that sRNAs can be, and likely are, ingested by insect vectors during virus acquisition feeding on plants.…”

Section: Viruses As Modulators Of Srna-based Communication Between Ve...mentioning

confidence: 99%

Small Talk: On the Possible Role of Trans-Kingdom Small RNAs during Plant–Virus–Vector Tritrophic Communication

Matsumura

Kormelink

2023

Plants

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Small RNAs (sRNAs) are the hallmark and main effectors of RNA silencing and therefore are involved in major biological processes in plants, such as regulation of gene expression, antiviral defense, and plant genome integrity. The mechanisms of sRNA amplification as well as their mobile nature and rapid generation suggest sRNAs as potential key modulators of intercellular and interspecies communication in plant-pathogen–pest interactions. Plant endogenous sRNAs can act in cis to regulate plant innate immunity against pathogens, or in trans to silence pathogens’ messenger RNAs (mRNAs) and impair virulence. Likewise, pathogen-derived sRNAs can act in cis to regulate expression of their own genes and increase virulence towards a plant host, or in trans to silence plant mRNAs and interfere with host defense. In plant viral diseases, virus infection alters the composition and abundance of sRNAs in plant cells, not only by triggering and interfering with the plant RNA silencing antiviral response, which accumulates virus-derived small interfering RNAs (vsiRNAs), but also by modulating plant endogenous sRNAs. Here, we review the current knowledge on the nature and activity of virus-responsive sRNAs during virus–plant interactions and discuss their role in trans-kingdom modulation of virus vectors for the benefit of virus dissemination.

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The pivotal roles of gut microbiota in insect plant interactions for sustainable pest management

Zhang,

2023

npj Biofilms Microbiomes

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The gut microbiota serves as a critical “organ” in the life cycle of animals, particularly in the intricate interplay between herbivorous pests and plants. This review summarizes the pivotal functions of the gut microbiota in mediating the insect–plant interactions, encompassing their influence on host insects, modulation of plant physiology, and regulation of the third trophic level species within the ecological network. Given these significant functions, it is plausible to harness these interactions and their underlying mechanisms to develop novel eco-friendly pest control strategies. In this context, we also outline some emerging pest control methods based on the intestinal microbiota or bacteria-mediated interactions, such as symbiont-mediated RNAi and paratransgenesis, albeit these are still in their nascent stages and confront numerous challenges. Overall, both opportunities and challenges coexist in the exploration of the intestinal microbiota-mediated interactions between insect pests and plants, which will not only enrich the fundamental knowledge of plant–insect interactions but also facilitate the development of sustainable pest control strategies.

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Facultative symbionts are potential agents of symbiont-mediated RNAi in aphids

Cited by 5 publications

References 147 publications

Role of gut symbionts of insect pests: A novel target for insect-pest control

Role of gut symbionts of insect pests: A novel target for insect-pest control

Small Talk: On the Possible Role of Trans-Kingdom Small RNAs during Plant–Virus–Vector Tritrophic Communication

The pivotal roles of gut microbiota in insect plant interactions for sustainable pest management

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