Gut wall bacteria of earthworms: a natural selection process

The ISME Journal
Dwipendra ThakuriaFiona M Doohan

Abstract

Earthworms and microorganisms are interdependent and their interactions regulate the biogeochemistry of terrestrial soils. Investigating earthworm-microorganism interactions, we tested the hypothesis that differences in burrowing and feeding habits of anecic and endogeic earthworms are reflected by the existence of ecological group-specific gut wall bacterial communities. Bacterial community was detected using automated ribosomal intergenic spacer analysis of 16S and 23S genes and ribotype data was used to assess diversity and community composition. Using soil and earthworm samples collected from adjacent wheat-barley and grass-clover fields, we found that the anecic Lumbricus terrestris and L. friendi, the endogeic Aporrectodea caliginosa and A. longa (classically defined as anecic, but now known to possess endogeic characteristics) contain ecological group-specific gut wall-associated bacterial communities. The abundance of specific gut wall-associated bacteria (identified by sequence analysis of ribotype bands), including Proteobacteria, Firmicutes and an actinobacterium, was ecological group dependent. A microcosm study, conducted using A. caliginosa and L. terrestris and five different feeding regimes, indicated that food ...Continue Reading

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Citations

Feb 22, 2012·Applied and Environmental Microbiology·Peter S Depkat-JakobHarold L Drake
Sep 13, 2013·BMC Research Notes·Matan ShelomiChih-Horng Kuo
Feb 4, 2016·Nature Communications·Elisabeth M BikDavid A Relman
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May 20, 2016·International Journal of Genomics·Simon BahrndorffJeppe Lund Nielsen
Apr 18, 2015·Soil Biology & Biochemistry·J B RichardsonA J Friedland
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Feb 8, 2018·Scientific Reports·Simon BahrndorffJeppe Lund Nielsen
Oct 3, 2017·Environmental Technology·Steef de ValkMerle K de Kreuk
Sep 21, 2019·PloS One·Angel I Ortíz-CeballosMaurilio López-Ortega
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Feb 6, 2021·Environmental Toxicology and Pharmacology·Chaolu RenHongyuan Wang
Apr 1, 2021·World Journal of Microbiology & Biotechnology·Veena Gayathri KrishnaswamyKabilan Mani
Aug 3, 2019·Environmental Science & Technology·Hong-Tao WangXi-Mei Xue

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