caa a22 4500 445894261 CHVBK 20180317145626.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10750-010-0230-y doi (NATIONALLICENCE)springer-10.1007/s10750-010-0230-y Hidden diversity among aquatic heterotrophic flagellates: ecological potentials of zoosporic fungi [Elektronische Daten] [Télesphore Sime-Ngando, Emilie Lefèvre, Frank Gleason] Since the emergence of the ‘microbial loop' concept, heterotrophic flagellates have received particular attention as grazers in aquatic ecosystems. These microbes have historically been regarded incorrectly as a homogeneous group of bacterivorous protists in aquatic systems. More recently, environmental rDNA surveys of small heterotrophic flagellates in the pelagic zone of freshwater ecosystems have provided new insights. (i) The dominant phyla found by molecular studies differed significantly from those known from morphological studies with the light microscope, (ii) the retrieved phylotypes generally belong to well-established eukaryotic clades, but there is a very large diversity within these clades and (iii) a substantial part of the retrieved sequences cannot be assigned to bacterivorous but can be assigned instead to parasitic and saprophytic organisms, such as zoosporic true fungi (chytrids), fungus-like organisms (stramenopiles), or virulent alveolate parasites (Perkinsozoa and Amoebophrya sp.). All these microorganisms are able to produce small zoospores to assure dispersal in water during their life-cycles. Based on the existing literature on true fungi and fungus-like organisms, and on the more recently published eukaryotic rDNA environmental studies and morphological observations, we conclude that previously overlooked microbial diversity and related ecological potentials require intensive investigation (i) for an improved understanding of the roles of heterotrophic flagellates in pelagic ecosystems and (ii) to properly integrate the concept of ‘the microbial loop' into modern pelagic microbial ecology. Springer Science+Business Media B.V., 2010 Aquatic systems nationallicence Microbial diversity nationallicence Heterotrophic flagellates nationallicence Zoosporic fungi nationallicence Food web dynamics nationallicence Sime-Ngando Télesphore LMGE, Laboratoire Microorganismes: Génome & Environnement, UMR CNRS 6023, Université Blaise Pascal, Clermont-Ferrand II, 63177, Aubière Cedex, France aut Lefèvre Emilie LMGE, Laboratoire Microorganismes: Génome & Environnement, UMR CNRS 6023, Université Blaise Pascal, Clermont-Ferrand II, 63177, Aubière Cedex, France aut Gleason Frank School of Biological Sciences A12, University of Sydney, 2006, Sydney, NSW, Australia aut Hydrobiologia Springer Netherlands 659/1(2011-01-01), 5-22 0018-8158 659:1<5 2011 659 10750 https://doi.org/10.1007/s10750-010-0230-y text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0230-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sime-Ngando Télesphore LMGE, Laboratoire Microorganismes: Génome & Environnement, UMR CNRS 6023, Université Blaise Pascal, Clermont-Ferrand II, 63177, Aubière Cedex, France aut NATIONALLICENCE 700 1- Lefèvre Emilie LMGE, Laboratoire Microorganismes: Génome & Environnement, UMR CNRS 6023, Université Blaise Pascal, Clermont-Ferrand II, 63177, Aubière Cedex, France aut NATIONALLICENCE 700 1- Gleason Frank School of Biological Sciences A12, University of Sydney, 2006, Sydney, NSW, Australia aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 659/1(2011-01-01), 5-22 0018-8158 659:1<5 2011 659 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer