Characteristics of the draft genome of "Candidatus Arsenophonus nilaparvatae", a facultative endosymbiont of Nilaparvata lugens

Insect Science
Hai-Wei FanChuan-Xi Zhang

Abstract

There exists a kind of symbiotic bacterium named "Candidatus Arsenophonus nilaparvatae" in the brown planthopper (BPH), Nilaparvata lugens. After being filtered and assembled from the BPH genome sequencing project, the genome sequence of this bacterial symbiont was obtained. After initial analysis based on the genome, we have found its potential role to synthesize B vitamins for the host. In order to better understand the lifestyle and the genomic changes of this symbiotic bacterium after the symbiotic relationship was established, we further report the characteristics of this draft genome. Compared with several other related bacteria, "Candidatus Arsenophonus nilaparvatae" has proven to be a facultative endosymbiont at the genomic level. Concurrently, the presence of fimbriae and flagella formation related genes indicates this maternally transmitted endosymbiont is most likely to retain the capacity to invade new hosts. Through further analysis of annotated gene sets, we also find evidence of genome reduction in its secretion system and metabolic pathways. These findings reflect its evolutionary trend to be an obligate one and enable a deeper study of microbe-insect interactions.

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Citations

May 5, 2016·Insect Science·Bin ChenYong-Ping Huang
Jul 1, 2020·International Journal of Systematic and Evolutionary Microbiology·Aharon OrenMartha E Trujillo
Mar 27, 2019·Archives of Insect Biochemistry and Physiology·Xiao-Li BingXiao-Yue Hong

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