Microbial players involved in the decline of filamentous and colonial cyanobacterial blooms with a focus on fungal parasitism.
Identifieur interne : 002B35 ( Main/Exploration ); précédent : 002B34; suivant : 002B36Microbial players involved in the decline of filamentous and colonial cyanobacterial blooms with a focus on fungal parasitism.
Auteurs : Mélanie Gerphagnon [France] ; Deborah J. Macarthur [Australie] ; Delphine Latour [France] ; Claire M M. Gachon [Royaume-Uni] ; Floris Van Ogtrop [Australie] ; Frank H. Gleason [Australie] ; Télesphore Sime-Ngando [France]Source :
- Environmental microbiology [ 1462-2920 ] ; 2015.
Descripteurs français
- KwdFr :
- Anabaena (croissance et développement), Animaux, Changement climatique, Chytridiomycota (physiologie), Cyanobactéries (croissance et développement), Cylindrospermopsis (croissance et développement), Eau douce (microbiologie), Eutrophisation (physiologie), Microcystis (croissance et développement), Zooplancton (croissance et développement).
- MESH :
- croissance et développement : Anabaena, Cyanobactéries, Cylindrospermopsis, Microcystis, Zooplancton.
- microbiologie : Eau douce.
- physiologie : Chytridiomycota, Eutrophisation.
- Animaux, Changement climatique.
English descriptors
- KwdEn :
- MESH :
- growth & development : Anabaena, Cyanobacteria, Cylindrospermopsis, Microcystis, Zooplankton.
- microbiology : Fresh Water.
- physiology : Chytridiomycota, Eutrophication.
- Animals, Climate Change.
Abstract
In the forthcoming decades, it is widely believed that the dominance of colonial and filamentous bloom-forming cyanobacteria (e.g. Microcystis, Planktothrix, Anabaena and Cylindrospermopsis) will increase in freshwater systems as a combined result of anthropogenic nutrient input into freshwater bodies and climate change. While the physicochemical parameters controlling bloom dynamics are well known, the role of biotic factors remains comparatively poorly studied. Morphology and toxicity often - but not always - limit the availability of cyanobacteria to filter feeding zooplankton (e.g. cladocerans). Filamentous and colonial cyanobacteria are widely regarded as trophic dead-ends mostly inedible for zooplankton, but substantial evidence shows that some grazers (e.g. copepods) can bypass this size constraint by breaking down filaments, making the bloom biomass available to other zooplankton species. A wide range of algicidal bacteria (mostly from the Alcaligenes, Flavobacterium/Cytophaga group and Pseudomonas) and viruses (Podoviridae, Siphoviridae and Myoviridae) may also contribute to bloom control, via their lytic activity underpinned by a diverse array of mechanisms. Fungal parasitism by the Chytridiomycota remains the least studied. While each of these biotic factors has traditionally been studied in isolation, emerging research consistently point to complex interwoven interactions between biotic and environmental factors.
DOI: 10.1111/1462-2920.12860
PubMed: 25818470
Affiliations:
- Australie, France, Royaume-Uni
- Auvergne (région administrative), Auvergne-Rhône-Alpes, Nouvelle-Galles du Sud
- Sydney
- Université de Sydney
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Le document en format XML
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While the physicochemical parameters controlling bloom dynamics are well known, the role of biotic factors remains comparatively poorly studied. Morphology and toxicity often - but not always - limit the availability of cyanobacteria to filter feeding zooplankton (e.g. cladocerans). Filamentous and colonial cyanobacteria are widely regarded as trophic dead-ends mostly inedible for zooplankton, but substantial evidence shows that some grazers (e.g. copepods) can bypass this size constraint by breaking down filaments, making the bloom biomass available to other zooplankton species. A wide range of algicidal bacteria (mostly from the Alcaligenes, Flavobacterium/Cytophaga group and Pseudomonas) and viruses (Podoviridae, Siphoviridae and Myoviridae) may also contribute to bloom control, via their lytic activity underpinned by a diverse array of mechanisms. Fungal parasitism by the Chytridiomycota remains the least studied. While each of these biotic factors has traditionally been studied in isolation, emerging research consistently point to complex interwoven interactions between biotic and environmental factors.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li><li>Royaume-Uni</li></country><region><li>Auvergne (région administrative)</li><li>Auvergne-Rhône-Alpes</li><li>Nouvelle-Galles du Sud</li></region><settlement><li>Sydney</li></settlement><orgName><li>Université de Sydney</li></orgName></list><tree><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Gerphagnon, Melanie" sort="Gerphagnon, Melanie" uniqKey="Gerphagnon M" first="Mélanie" last="Gerphagnon">Mélanie Gerphagnon</name></region><name sortKey="Latour, Delphine" sort="Latour, Delphine" uniqKey="Latour D" first="Delphine" last="Latour">Delphine Latour</name><name sortKey="Sime Ngando, Telesphore" sort="Sime Ngando, Telesphore" uniqKey="Sime Ngando T" first="Télesphore" last="Sime-Ngando">Télesphore Sime-Ngando</name></country><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Macarthur, Deborah J" sort="Macarthur, Deborah J" uniqKey="Macarthur D" first="Deborah J" last="Macarthur">Deborah J. Macarthur</name></region><name sortKey="Gleason, Frank H" sort="Gleason, Frank H" uniqKey="Gleason F" first="Frank H" last="Gleason">Frank H. Gleason</name><name sortKey="Van Ogtrop, Floris" sort="Van Ogtrop, Floris" uniqKey="Van Ogtrop F" first="Floris" last="Van Ogtrop">Floris Van Ogtrop</name></country><country name="Royaume-Uni"><noRegion><name sortKey="Gachon, Claire M M" sort="Gachon, Claire M M" uniqKey="Gachon C" first="Claire M M" last="Gachon">Claire M M. Gachon</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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