Edward F.DeLong博士による記念講演会 Microbial Oceanography: The Challenge of the Sea (10月23日)
本大会では、ハワイ大学のEdward F.DeLong博士による記念講演会が10月23日15:45〜行われます。
DeLong博士は、環境微生物学の分野で常に世界のトップを行く研究者です。これまでに、原核生物の16S rRNA遺伝子をPCR増幅するためのユニバーサルプライマーや微生物分類群ごとに細胞を染め分ける蛍光 in situ ハイブリダイゼーション(FISH)など環境微生物学の分野で重要なツールを開発されてきました。また、海底堆積物に生息する嫌気的メタン酸化アーキアや光エネルギーを利用する海洋細菌のイオンポンプ(プロテオロドプシン)、海洋深層域にて優占する海洋性アーキア、海洋細菌が発現するsmall RNAなど海洋微生物に関する数多くの発見をされてきました。これまで、米モントレーベイ水族館研究所、マサチューセッツ工科大学にて研究され、2014年8月よりハワイ大学微生物海洋学研究センターにて研究をされています。2009年より米国科学アカデミー会員。
講演タイトル:Microbial Oceanography: The Challenge of the Sea
日時:2014年10月23日15:45-16:45
場所:浜松アクトシティコングレスセンター大ホール
Microbial Oceanography: The Challenge of the Sea.
Edward F. DeLong, Dept. of Oceanography, School of Ocean and Earth Science and Technology, University of Hawaii Manoa, Honolulu, HI
Microbial communities regulate the cycling of energy and matter in the marine environment, yet how they respond to environmental change, and the variability of their activities in space and time, are not well understood. Genomic methods and allied technologies are now providing new perspective on the distribution of microbial taxa, genes, and processes in the marine environment. Yet one of the larger challenges remaining is defining these taxa, gene and process distributions on appropriate spatial and temporal scales. How much does metabolic activity of an specific planktonic microbial population vary of the course of minutes, hours, days and weeks ? Over what spatial scales ? Put another way, exactly what is “a day in the life” of wild planktonic microbial species ? How does the that variation in any specific population correlate with the variability of other co-occurring taxa or populations, and corresponding environmental variation ? New robotic sampling strategies, coupled with genome-wide gene expression analyses in wild planktonic microbial populations, have potential to answer some of these questions. New results using such approaches show that individual populations, as well as very different bacterial and archaeal species, display remarkably similar, time-variable patterns of synchronous gene expression over extended periods of time. These new results suggest that specific environmental cues may elicit cross-species coordination of gene expression among diverse microbial groups, that potentially enable multispecies coupling of metabolic activity. How the temporal compartmentalization of metabolism across different across different species in complex populations is an exciting area to explore. The coupling of genome-enabled data with observational oceanography promises to significantly advance our understanding of the inner workings of complex ecosystems.