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ストラスブール大学派遣研究者講演会
Microbial communities in nutrients poor environments: bacterial diversity and survival strategies

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お茶の水女子大学とストラスブール大学との研究者派遣交流協定で2015年2月8日～21日まで来学される、Prof. Marie-Claire Lettのセミナーです。を開催します。入場無料、予約不要です。ご関心のある方はぜひご出席下さいますようご案内申し上げます。

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日時 2015年2月17日（火曜日） 17:00?18:30
会場 理学部1号館4階　415室（化学第一講義室）
講演者 Professor Marie-Claire Lett
（ストラスブール大学教授?日仏大学会館館長、専門は微生物学?生態学）
演題 Microbial communities in nutrients poor environments:
bacterial diversity and survival strategies
言語 英語
要旨 Various microorganisms, including bacteria, yeasts, fungi and algae are able to survive in polluted and/or nutrients poor (oligotrophic) environments, despite the inhospitable conditions. They develop different strategies to overcome the harshness of the environment. We explored the prokaryotic diversity in acid mine drainages, characterized by low pH, high levels of toxic metals and metalloids, such as arsenic, and low concentration of organic matter. The application of novel cultures strategies revealed a much higher diversity than previously described in investigations based on classic culture methods as well as on culture independent approaches. Our work led also to the isolation of bacteria involved in organic matter recycling in these nutrient poor ecosystems and showed that some of them could be a reservoir for genes with potential biotechnologies properties. On the other hand we studied the bacterial strategies used for the colonization of nutrients poor environments. Six bacterial strains, isolated from industrial ultra pure water systems, were grown in single- and multi-species consortia. Our results showed that the survival of bacteria, in these very oligotrophic ecosystems, requires a rather sophisticated social cooperative behavior between the partners, including hitchhiking strategies and exchanging of metabolites.

問合せ

大学院人間文化創成科学研究科
　加藤美砂子（）
　小川温子（）

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