Abstract

Lactic acid bacteria (LAB) are well recognized beneficial host-associated members of the microbiota of humans and animals. Yet LAB-associations of invertebrates have been poorly characterized and their functions remain obscure. Here we show that honeybees possess an abundant, diverse and ancient LAB microbiota in their honey crop with beneficial effects for bee health, defending them against microbial threats. Our studies of LAB in all extant honeybee species plus related apid bees reveal one of the largest collections of novel species from the genera Lactobacillus and Bifidobacterium ever discovered within a single insect and suggest a long (>80 mya) history of association. Bee associated microbiotas highlight Lactobacillus kunkeei as the dominant LAB member. Those showing potent antimicrobial properties are acquired by callow honey bee workers from nestmates and maintained within the crop in biofilms, though beekeeping management practices can negatively impact this microbiota. Prophylactic practices that enhance LAB, or supplementary feeding of LAB, may serve in integrated approaches to sustainable pollinator service provision. We anticipate this microbiota will become central to studies on honeybee health, including colony collapse disorder, and act as an exemplar case of insect-microbe symbiosis.

Published in

PLoS ONE
2012, Volume: 7, number: 3, article number: e33188
Publisher: Public Library of Science

SLU Authors

• Forsgren, Eva

  • Department of Ecology, Swedish University of Agricultural Sciences
    

• Fries, Ingemar

  • Department of Ecology, Swedish University of Agricultural Sciences
    

Associated SLU-program

AMR: Bacteria


UKÄ Subject classification

Pathobiology


Publication identifier

DOI: https://doi.org/10.1371/journal.pone.0033188

Permanent link to this page (URI)

https://res.slu.se/id/publ/40049