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Marine actinobacteria: perspectives, challenges, future directions.

In this paper we evaluate the current state of research on the biology and biotechnology of marine actinobacteria. The topics covered include the abundance, diversity, novelty and biogeographic distribution of marine actinobacteria, ecosystem function, bioprospecting, and a new approach to the exploration of actinobacterial taxonomic space. An agenda for future marine actinobacterial research is suggested based upon consideration of the above issues.