第34回ERATO共生進化機構国際セミナー

講師：Dr. Nicky Wybouw (Ghent University, Belgium)

演題：How Wolbachia symbionts spread within haplodiploid mites

日時：2024年12月11日（水）16:00(JST)～

場所：産業技術総合研究所 つくば中央

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Abstract:

The widespread occurrence of heritable symbionts such as Wolbachia necessitates a mechanistic understanding of how these symbionts spread through natural host populations. We study the underpinning mechanisms using haplodiploid spider mites as model systems, and by integrating molecular, population, and theoretical biology. I will outline our current understanding of three Wolbachia-mediated reproductive phenotypes that drive the spread of infection within spider mites: cytoplasmic incompatibility, parthenogenesis, and sex allocation distortion. The impact of these Wolbachia-mediated phenotypes on several components of the host reproductive physiology will be outlined. I will further describe (candidate) causal Wolbachia genic factors that underpin reproductive phenotypes in spider mites. The talk will focus on how host genetics shapes the strength of Wolbachia-mediated phenotypes and how reciprocal host-symbiont interactions modulate infection spread and persistence. Interestingly, genomic analyses are revealing that interspecific hybridisation and introgression facilitate the acquisition of Wolbachia within certain spider mite genera. Together, these and findings of our colleagues underscore the complexity of the molecular mechanisms that regulate endosymbiosis.

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問い合わせ先：M-ERATO-International-Seminar-ml@aist.go.jp

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)

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