Endosymbiotic adaptations in three new bacterial species associated with Dictyostelium discoideum : Paraburkholderia agricolaris sp. nov., Paraburkholderia hayleyella sp. nov., and Paraburkholderia bonniea sp. nov

PeerJ

article

Debra A. Brock¹  Suegene Noh²  Alicia N.M. Hubert¹  Tamara S. Haselkorn³  Susanne DiSalvo⁴  Melanie K. Suess⁵  Alexander S. Bradley⁶  Mahboubeh Tavakoli-Nezhad¹  Katherine S. Geist¹  David C. Queller¹  Joan E. Strassmann¹ 

[1] Department of Biology, Washington University in St. Louis;Department of Biology, Colby College;Department of Biology, University of Central Arkansas;Department of Biological Sciences, Southern Illinois University at Edwardsville;Department of Earth and Planetary Sciences, Washington University in St. Louis;Department of Earth and Planetary Sciences, Division of Biology and Biomedical Sciences, Washington University in St. Louis

关键词: Symbiosis;    Mutualism;    Social amoebae;    Dictyostelium;    Paraburkholderia;   

DOI  :  10.7717/peerj.9151

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Here we give names to three new species of Paraburkholderia that can remain in symbiosis indefinitely in the spores of a soil dwelling eukaryote, Dictyostelium discoideum. The new species P. agricolaris sp. nov., P. hayleyella sp. nov., and P. bonniea sp. nov. are widespread across the eastern USA and were isolated as internal symbionts of wild-collected D. discoideum. We describe these sp. nov. using several approaches. Evidence that they are each a distinct new species comes from their phylogenetic position, average nucleotide identity, genome-genome distance, carbon usage, reduced length, cooler optimal growth temperature, metabolic tests, and their previously described ability to invade D. discoideum amoebae and form a symbiotic relationship. All three of these new species facilitate the prolonged carriage of food bacteria by D. discoideum, though they themselves are not food. Further studies of the interactions of these three new species with D. discoideum should be fruitful for understanding the ecology and evolution of symbioses.

【 授权许可】

CC BY