Host plant and population source drive diversity of microbial gut communities in two polyphagous insects

Scientific Reports
Asher G JonesKelli Hoover

Abstract

Symbioses between insects and microbes are ubiquitous, but vary greatly in terms of function, transmission mechanism, and location in the insect. Lepidoptera (butterflies and moths) are one of the largest and most economically important insect orders; yet, in many cases, the ecology and functions of their gut microbiomes are unresolved. We used high-throughput sequencing to determine factors that influence gut microbiomes of field-collected fall armyworm (Spodoptera frugiperda) and corn earworm (Helicoverpa zea). Fall armyworm midgut bacterial communities differed from those of corn earworm collected from the same host plant species at the same site. However, corn earworm bacterial communities differed between collection sites. Subsequent experiments using fall armyworm evaluating the influence of egg source and diet indicated that that host plant had a greater impact on gut communities. We also observed differences between regurgitant (foregut) and midgut bacterial communities of the same insect host, suggesting differential colonization. Our findings indicate that host plant is a major driver shaping gut microbiota, but differences in insect physiology, gut region, and local factors can also contribute to variation in microbi...Continue Reading

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Citations

Jun 4, 2020·Pathogens·Christos PapadopoulosDimitrios G Karpouzas
Jul 18, 2020·Frontiers in Microbiology·Ayushi Gupta, Suresh Nair
Jul 25, 2019·Proceedings of the National Academy of Sciences of the United States of America·Charles J MasonGary W Felton
May 22, 2020·Frontiers in Microbiology·María Martínez-SolísSalvador Herrero

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Methods Mentioned

BETA
16S sequencing
16S
PCR
Illumina

Software Mentioned

PerMANOVA
MEGA7
mothur
PRIMER
SeqMan Pro

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