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Gut Bacterial Communities of Dendroctonus valens and D. mexicanus (Curculionidae: Scolytinae): A Metagenomic Analysis across Different Geographical Locations in Mexico.


ABSTRACT: Dendroctonus bark beetles are a worldwide significant pest of conifers. This genus comprises 20 species found in North and Central America, and Eurasia. Several studies have documented the microbiota associated with these bark beetles, but little is known regarding how the gut bacterial communities change across host range distribution. We use pyrosequencing to characterize the gut bacterial communities associated with six populations of Dendroctonus valens and D. mexicanus each across Mexico, determine the core bacteriome of both insects and infer the metabolic pathways of these communities with Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) to evaluate whether these routes are conserved across geographical locations. Our results show that the ?-diversity with UniFrac unweighted varies among locations of both bark beetles mainly due to absence/presence of some rare taxa. No association is found between the pairwise phylogenetic distance of bacterial communities and geographic distance. A strict intraspecific core bacteriome is determined for each bark beetle species, but these cores are different in composition and abundance. However, both bark beetles share the interspecific core bacteriome recorded previously for the Dendroctonus genus consisting of Enterobacter, Pantoea, Providencia, Pseudomonas, Rahnella, and Serratia. The predictions of metabolic pathways are the same in the different localities, suggesting that they are conserved through the geographical locations.

SUBMITTER: Hernandez-Garcia JA 

PROVIDER: S-EPMC6164411 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Gut Bacterial Communities of <i>Dendroctonus valens</i> and <i>D. mexicanus</i> (Curculionidae: Scolytinae): A Metagenomic Analysis across Different Geographical Locations in Mexico.

Hernández-García Juan Alfredo JA   Gonzalez-Escobedo Roman R   Briones-Roblero Carlos Iván CI   Cano-Ramírez Claudia C   Rivera-Orduña Flor N FN   Zúñiga Gerardo G  

International journal of molecular sciences 20180830 9


<i>Dendroctonus</i> bark beetles are a worldwide significant pest of conifers. This genus comprises 20 species found in North and Central America, and Eurasia. Several studies have documented the microbiota associated with these bark beetles, but little is known regarding how the gut bacterial communities change across host range distribution. We use pyrosequencing to characterize the gut bacterial communities associated with six populations of <i>Dendroctonus valens</i> and <i>D. mexicanus</i>  ...[more]

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