2009
DOI: 10.1128/aem.02697-08
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The Ultramicrobacterium “ Elusimicrobium minutum ” gen. nov., sp. nov., the First Cultivated Representative of the Termite Group 1 Phylum

Abstract: Insect intestinal tracts harbor several novel, deep-rooting clades of as-yet-uncultivated bacteria whose biology is typically completely unknown. Here, we report the isolation of the first representative of the termite group 1 (TG1) phylum from sterile-filtered gut homogenates of a humivorous scarab beetle larva. Strain Pei191T is a mesophilic, obligately anaerobic ultramicrobacterium with a gram-negative cell envelope. Cells are typically rod shaped, but cultures are pleomorphic in all growth phases (0.3 to 2… Show more

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Cited by 164 publications
(110 citation statements)
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“…The shift in gut bacterial population structure is strikingly prolonged, since termites were not fed antibiotics for ϳ50 days prior to dissections. The inability to return to a pretreatment microbial homeostasis (70), coupled with the acquisition of putative opportunistic pathogens and the low growth rates of many of these termite gut microorganisms (27,30,41,42,62), may help explain the prolonged effects that the antibiotic had on longevity and fecundity.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The shift in gut bacterial population structure is strikingly prolonged, since termites were not fed antibiotics for ϳ50 days prior to dissections. The inability to return to a pretreatment microbial homeostasis (70), coupled with the acquisition of putative opportunistic pathogens and the low growth rates of many of these termite gut microorganisms (27,30,41,42,62), may help explain the prolonged effects that the antibiotic had on longevity and fecundity.…”
Section: Discussionmentioning
confidence: 99%
“…moistened with either distilled water (controls) or rifampin (Sandoz Inc., Princeton, NJ; 300-mg capsules) (see below for details). Rifampin is bacteriostatic or bactericidal depending on dosage and acts by specifically inhibiting DNA-dependent RNA polymerase activity in eubacterial cells (27). It is a broad-spectrum compound active against a variety of Gram-positive and Gram-negative organisms (8,16,55,76).…”
mentioning
confidence: 99%
“…Meanwhile, numerous sequences affiliated with this phylum have also been retrieved from habitats other than termite guts. They form several deep-branching lineages comprising sequences derived not only from intestinal tracts but also from soils, sediments, and contaminated aquifers (14,20).Recently, we were able to isolate strain Pei191 T , the first pure-culture representative of the TG1 phylum, from the gut of a humivorous scarab beetle larva, Pachnoda ephippiata (14). Based on the 16S rRNA gene sequence, strain Pei191…”
mentioning
confidence: 99%
“…Meanwhile, numerous sequences affiliated with this phylum have also been retrieved from habitats other than termite guts. They form several deep-branching lineages comprising sequences derived not only from intestinal tracts but also from soils, sediments, and contaminated aquifers (14,20).…”
mentioning
confidence: 99%
“…The origin of these lineages remains unclear, but their detection also in the guts of several cockroaches (15)(16)(17), the closest relatives of termites, together with occasional evidence of cocladogenesis with the termite hosts (18,19) has given rise to the hypothesis that the bacterial microbiota of extant termites and cockroaches is derived from their common dictyopteran ancestors.…”
mentioning
confidence: 99%