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2019 年度 実績報告書

Shedding light on genome evolution of a 220-million-year old's cockroach friend: Blattabacterium cuenoti

研究課題

研究課題/領域番号 18K14767
研究機関沖縄科学技術大学院大学

研究代表者

ブギーニョン トマ  沖縄科学技術大学院大学, 進化ゲノミクスユニット, 准教授 (40817558)

研究期間 (年度) 2018-04-01 – 2020-03-31
キーワードcockroach / blattabacterium / genome evolution
研究実績の概要

In this project, I proposed to study the genome evolution of the cockroach endosymbiont Blattabacterium. Altogether, I sequenced >50 Blattabacterium genomes, all of which have been assembled and annotated. With these genomes, I attempted to identify the factors at the origin of genome reduction in endosymbionts. I found that mutation rate was the primary driver of genome reduction in Blattabacterium. I also found several examples of gene lost under relaxed selection. However, population bottlenecks, and the associated genetic drift, did not correlate with gene loss, suggesting that the Muller’s Ratchet, the dominant explanation for gene loss in endosymbionts, play no significant role in Blattabacterium genome erosion. This project already yielded one published paper, and one paper is under second review. A third paper will be submitted this year.

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公開日: 2021-01-27  

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