第22回共生進化機構国際セミナー

講師: Prof. Michele Nishiguchi（University of California Merced, USA）
演題: Interpreting the road map between ecological and molecular boundaries using a squid-bacterial mutualism
日時: 2023年4月5日（水）13:00 (JST)～

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Abstract: The mutualistic association between sepiolid squids (Mollusca: Cephalopoda) and their Vibrio symbionts is an experimentally tractable model to study the evolution of animal-bacterial associations through both wild-caught and experimentally evolved populations. Since Vibrio bacteria are environmentally transmitted to new hosts with every generation, it provides a unique opportunity to resolve how changing environmental conditions may effect bacterial infection, colonization, and persistence in different host species. Vibrio bacteria encounter potentially conflicting selective pressures, competing with one another to colonize the sepiolid light organ, but also vying for resources in the environment outside the squid. Both abiotic and biotic factors contribute to the fitness of individual strains of Vibrio bacteria, but which of these factors are amenable to adaptation and eventually lead to a successful beneficial association has yet to be elucidated. This seminar will cover how environmental conditions and host specificity lead to the development of symbiotically adapted Vibrio bacteria, generating new ideas on the evolution of beneficial associations.

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連絡先: 深津 武馬（生物プロセス研究部門首席研究員、t-fukatsu@aist.go.jp)
ERATO深津共生進化機構プロジェクト
参照記事: https://www.jst.go.jp/erato/fukatsu/news/2023/230405.html