Biodiversity of the microbiota in<i>Spodoptera exigua</i>(Lepidoptera: Noctuidae)

Gao, Xueke; Li, W.; Luo, Junyu; Zhang, Long; Ji, Jun; Zhu, Xiangzhen; Wang, L.; Zhang, S.; Cui, Jinjie

doi:10.1111/jam.14190

Cited by 51 publications

(53 citation statements)

References 57 publications

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“…Symbiotic bacteria play a pivotal role in the development and survival of their insect hosts, providing a full array of molecules for digestion, detoxification, and defense against pathogens (Douglas, 2015). There is still a scant knowledge on Lepidoptera-associated microbiomes, because the majority of studies is (i) merely descriptive, (ii) focused on single bacterial taxon, (iii) a few butterfly/moth species have been extensively surveyed, or (iv) only rarely endosymbionts have been compared across different developmental instars (Di Salvo et al, 2019;Gao et al, 2019;Szenteczki et al, 2019). Nevertheless, an increasing number of experiments provide evidence for a crucial function of microbes in basic physiological processes of Lepidoptera (Paniagua Voirol et al, 2018), e.g.…”

Section: A Third Player: Egg-associated Microorganismsmentioning

confidence: 99%

Chemical, Physiological and Molecular Responses of Host Plants to Lepidopteran Egg-Laying

et al. 2020

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Plant-lepidopteran interactions involve complex processes encompassing molecules and regulators to counteract defense responses they develop against each other. Lepidoptera identify plants for oviposition and exploit them as larval food sources to complete their development. In turn, plants adopt different strategies to overcome and limit herbivorous damages. The insect egg deposition on leaves can already induce a number of defense responses in several plant species. This minireview deals with the main features involved in the interaction between plants and lepidopteran egg-laying, focusing on responses from both insect and plant side. We discuss different aspects of direct and indirect plant responses triggered by lepidopteran oviposition. In particular, we focus our attention on the mechanisms underlying egg-induced plant defenses that can i) directly damage the eggs such as localized hypersensitive response (HR)-like necrosis, neoplasm formation, production of ovicidal compounds and ii) indirect defenses, such as production of oviposition-induced plant volatiles (OIPVs) used to attract natural enemies (parasitoids) able to kill the eggs or hatching larvae. We provide an overview of chemical, physiological, and molecular egg-mediated plant responses induced by both specialist and generalist lepidopteran species, also dealing with effectors, elicitors, and chemical signals involved in the process. Egg-associated microorganisms are also discussed, although little is known about this third partner participating in plant-lepidopteran interactions.

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Section: A Third Player: Egg-associated Microorganismsmentioning

confidence: 99%

Chemical, Physiological and Molecular Responses of Host Plants to Lepidopteran Egg-Laying

et al. 2020

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“…Relatively few studies have assessed the Spodoptera-associated gut microbiome. In a recent study, the microbial diversity of Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) was examined by 16S rDNA sequence profiling (Gao et al, 2019). In Spodoptera exigua, the dominant bacterial clades are Proteobacteria and Firmicutes, with the predominant genus in larvae being Enterococcus.…”

Section: Introductionmentioning

confidence: 99%

Diversity of fall armyworm, Spodoptera frugiperda and their gut bacterial community in Kenya

Gichuhi

Subramanian

Khamis

et al. 2020

PeerJ

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Background The invasive fall armyworm, Spodoptera frugiperda (J.E. Smith) is a polyphagous pest that causes widespread damage particularly to maize and sorghum in Africa. The microbiome associated with S. frugiperda could play a role in the insects’ success and adaptability. However, bacterial communities in S. frugiperda remain poorly studied. Methods We investigated the composition, abundance and diversity of microbiomes associated with larval and adult specimens of S. frugiperda collected from four maize growing regions in Kenya through high throughput sequencing of the bacterial 16S rRNA gene. The population structure of S. frugiperda in Kenya was assessed through amplification of the mitochondrial cytochrome oxidase subunit I gene. Results We identified Proteobacteria and Firmicutes as the most dominant bacterial phyla and lesser proportions of Bacteroidetes and Actinobacteria. We also observed differences in bacterial microbiome diversity between larvae and adults that are a likely indication that some prominent larval bacterial groups are lost during metamorphosis. However, several bacterial groups were found in both adults and larvae suggesting that they are transmitted across developmental stages. Reads corresponding to several known entomopathogenic bacterial clades as well as the fungal entomopathogen, Metarhizium rileyi, were observed. Mitochondrial DNA haplotyping of the S. frugiperda population in Kenya indicated the presence of both “Rice” and “Corn” strains, with a higher prevalence of the “Rice” strain.

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“…Few studies have assessed the Spodoptera -associated gut microbiome. In a recent study, the microbial diversity of Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) was examined by 16S rDNA sequence profiling (Gao et al 2018). In Spodoptera exigua , the dominant bacterial clades are Proteobacteria and Firmicutes, with the predominant genus in larvae being Enterococcus .…”

Section: Introductionmentioning

confidence: 99%

Diversity of fall armyworm, Spodoptera frugiperda and their gut bacterial community in Kenya

Gichuhi

Subramanian

Khamis

et al. 2019

Preprint

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9The invasive fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) is a polyphagous pest that causes 10 widespread damage particularly to maize and sorghum in Africa. The microbiome associated with S. 11frugiperda could play a role in their success and adaptability. However, these bacterial communities remain 12 poorly studied, especially for S. frugiperda in Africa. We investigated the composition, abundance and 13 diversity of microbiomes associated with larval and adult specimens of S. frugiperda collected from four 14 maize growing regions in Kenya through high throughput sequencing of bacterial 16S rRNA gene. We 15 identified Proteobacteria and Firmicutes as the most dominant phyla and lesser proportions of 16 Bacteroidetes and Actinobacteria. We also observed differences in bacterial microbiome diversity between 17 larvae and adults that are a likely indication that some prominent larval bacterial groups are lost during 18 metamorphosis. Several bacterial groups were found in both adults and larvae suggesting that they are 19 transmitted across developmental stages. Reads corresponding to several known entomopathogenic 20 bacterial clades as well as the non-bacterial entomopathogen, Metarhizium rileyi (Farl.) Kepler, Rehner & 21 Humber (2014), were observed. Mitochondrial DNA haplotyping of the S. frugiperda population in Kenya 22 indicated the presence of both 'Rice' and 'Corn' strains, with a higher prevalence of the 'Rice' strain. Insights 23 into the microbiota may ultimately provide alternative avenues for controlling of this pest.24

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Biodiversity of the microbiota inSpodoptera exigua(Lepidoptera: Noctuidae)

Cited by 51 publications

References 57 publications

Chemical, Physiological and Molecular Responses of Host Plants to Lepidopteran Egg-Laying

Chemical, Physiological and Molecular Responses of Host Plants to Lepidopteran Egg-Laying

Diversity of fall armyworm, Spodoptera frugiperda and their gut bacterial community in Kenya

Diversity of fall armyworm, Spodoptera frugiperda and their gut bacterial community in Kenya

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