Associations Between Insects and Nonpathogenic Microorganisms

Tañada, Y.

doi:10.1016/b978-0-08-092625-4.50006-6

Cited by 10 publications

(6 citation statements)

References 152 publications

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“…The microbiome genome anatomy project was initiated to define the genomes of the indigenous human microbiota that may contain 50-100 times more genes than the human genome (61). Many insect species are also inhabited by large diverse communities of microorganisms (23,27,36,81,105). Although there is great variation in the numbers of microbes colonizing insects, it is likely that most insect species harbor a microbial community that outnumbers their own cells.…”

Section: Introductionmentioning

confidence: 99%

“…Past studies have overwhelmingly focused on the contribution of endosymbionts and gut microbiota to the nutrition of the host and these have been reviewed extensively (29,46,105). Nutritional contributions may take several forms: improved ability to live on suboptimal diets, improved digestion efficiency, acquisition of digestive enzymes, and provision of vitamins.…”

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confidence: 99%

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THE GUT BACTERIA OF INSECTS: Nonpathogenic Interactions

Vm²

2004

Annu. Rev. Entomol.

1,285

1,045

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The diversity of the Insecta is reflected in the large and varied microbial communities inhabiting the gut. Studies, particularly with termites and cockroaches, have focused on the nutritional contributions of gut bacteria in insects living on suboptimal diets. The indigenous gut bacteria, however, also play a role in withstanding the colonization of the gut by non-indigenous species including pathogens. Gut bacterial consortia adapt by the transfer of plasmids and transconjugation between bacterial strains, and some insect species provide ideal conditions for bacterial conjugation, which suggests that the gut is a "hot spot" for gene transfer. Genomic analysis provides new avenues for the study of the gut microbial community and will reveal the molecular foundations of the relationships between the insect and its microbiome. In this review the intestinal bacteria is discussed in the context of developing our understanding of symbiotic relationships, of multitrophic interactions between insects and plant or animal host, and in developing new strategies for controlling insect pests.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

THE GUT BACTERIA OF INSECTS: Nonpathogenic Interactions

Vm²

2004

Annu. Rev. Entomol.

1,285

1,045

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“…In this study, we isolated microorganisms from wild D. melanogaster to answer the following questions: (1) how is the microbiota of Drosophila distributed spatially? We hypothesized that some microorganisms are found in both external and internal tissues of flies [ 17 ]; however, other bacteria and fungi will be limited to either internal or external surfaces. (2) Are culturable fungi and bacteria equally diverse in flies?…”

Section: Introductionmentioning

confidence: 99%

Differential Microbial Diversity inDrosophila melanogaster: Are Fruit Flies Potential Vectors of Opportunistic Pathogens?

Ramírez‐Camejo

Maldonado-Morales

Bayman

2017

International Journal of Microbiology

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Drosophila melanogaster has become a model system to study interactions between innate immunity and microbial pathogens, yet many aspects regarding its microbial community and interactions with pathogens remain unclear. In this study wild D. melanogaster were collected from tropical fruits in Puerto Rico to test how the microbiota is distributed and to compare the culturable diversity of fungi and bacteria. Additionally, we investigated whether flies are potential vectors of human and plant pathogens. Eighteen species of fungi and twelve species of bacteria were isolated from wild flies. The most abundant microorganisms identified were the yeast Candida inconspicua and the bacterium Klebsiella sp. The yeast Issatchenkia hanoiensis was significantly more common internally than externally in flies. Species richness was higher in fungi than in bacteria, but diversity was lower in fungi than in bacteria. The microbial composition of flies was similar internally and externally. We identified a variety of opportunistic human and plant pathogens in flies such as Alcaligenes faecalis, Aspergillus flavus, A. fumigatus, A. niger, Fusarium equiseti/oxysporum, Geotrichum candidum, Klebsiella oxytoca, Microbacterium oxydans, and Stenotrophomonas maltophilia. Despite its utility as a model system, D. melanogaster can be a vector of microorganisms that represent a potential risk to plant and public health.

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“…Studies demonstrated that E. cloacae is the most common bacteria found in the gut of insects of medical importance or not, including sand fl ies (Rossiter et al 1983, Tanada & Kaya 1993, Dillon et al 1996. In the midgut of mosquitoes collected from the fi eld or maintained in insectary, Enterobacter has no infl uence in the insect's survival.…”

Section: Stenotrophomonas Maltophilia 12 5 37mentioning

confidence: 99%