160 lines
17 KiB
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160 lines
17 KiB
XML
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<mods:title id="500384FF0756B54286218F09B17A1CEF">A Hotspot of Amoebae Diversity: 8 New Naked Amoebae Associated with the Planktonic Bloom-forming Cyanobacterium Microcystis</mods:title>
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<mods:namePart id="6FA173B3FF57C2BB265A38D2A56C6044">D’Hondt, Sofie</mods:namePart>
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<treatment id="0228D806FFAFFF83FC9BFEB3FBD76490" ID-DOI="http://doi.org/10.5281/zenodo.12538880" ID-GBIF-Taxon="233769588" ID-Zenodo-Dep="12538880" LSID="urn:lsid:plazi:treatment:0228D806FFAFFF83FC9BFEB3FBD76490" httpUri="http://treatment.plazi.org/id/0228D806FFAFFF83FC9BFEB3FBD76490" lastPageNumber="76" pageId="15" pageNumber="76">
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<taxonomicName id="4D811293FFAFFF83FC9BFEB3FC016193" authority="Berney, Bass & Geisen, 2015" box="[847,1017,375,402]" class="Variosea" family="Angulamoebidae" genus="Angulamoeba" higherTaxonomySource="GBIF" kingdom="Protozoa" pageId="15" pageNumber="76" phylum="Amoebozoa" rank="genus">
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<emphasis id="B8F5B502FFAFFF83FC9BFEB3FC016193" bold="true" box="[847,1017,375,402]" italics="true" pageId="15" pageNumber="76">Angulamoeba</emphasis>
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<paragraph id="8A3E6910FFAFFF83FC9BFE66FA7462D0" blockId="15.[809,1456,418,1169]" pageId="15" pageNumber="76">
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In the
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<taxonomicName id="4D811293FFAFFF83FC74FE66FBBB61BD" authority="ML" authorityName="ML" box="[928,1091,418,444]" class="Variosea" family="Angulamoebidae" genus="Angulamoeba" higherTaxonomySource="GBIF" kingdom="Protozoa" pageId="15" pageNumber="76" phylum="Amoebozoa" rank="genus">
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<emphasis id="B8F5B502FFAFFF83FC74FE66FBBB61BD" box="[928,1091,418,444]" italics="true" pageId="15" pageNumber="76">Angulamoeba</emphasis>
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</taxonomicName>
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ML phylogeny (
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<figureCitation id="12BA7595FFAFFF83FAC6FE66FA8B61BD" box="[1298,1395,418,444]" captionStart="Fig" captionStartId="17.[125,160,1778,1800]" captionTargetId="figure-10@18.[148,1448,222,1933]" captionTargetPageId="18" captionText="Fig. 8. A – 18S rDNA maximum likelihood phylogeny of Angulamoeba. Sequences new for this study are indicated in bold. ML bootstrap values respectively posterior probabilities are shown at the nodes. GenBank accession numbers are given together with the species names. B – LM pictures of Angulamoeba microcystivorans (strains A1WVB (1, 2, 4) and A4WVB (3)) showing the characteristic rusty-colored plasmodium-like mucilage matrix with embedded trophozoites devouring a culture of Microcystis aeruginosa colonies (1–2), multi-vacuolated trophozoites that are seemingly connected by their filopodia (3) and amoeba-flagellates in different stages of transition (4). Scale bars: 200 µm (1), 100 µm (2), 20 µm (3, 4)." figureDoi="http://doi.org/10.5281/zenodo.12538733" httpUri="https://zenodo.org/record/12538733/files/figure.png" pageId="15" pageNumber="76">Fig. 8A</figureCitation>
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), the additional reticulate strains (A4
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<collectionCode id="EC90F1D5FFAFFF83FB79FE00FB0D61DF" box="[1197,1269,452,478]" pageId="15" pageNumber="76">WVB</collectionCode>
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, A7
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<collectionCode id="EC90F1D5FFAFFF83FAFDFE00FA8861DF" box="[1321,1392,452,478]" pageId="15" pageNumber="76">WVB</collectionCode>
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) and sequences (A1
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<collectionCode id="EC90F1D5FFAFFF83FC0CFE23FBDB6200" box="[984,1059,487,513]" pageId="15" pageNumber="76">WVB</collectionCode>
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, A2
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<collectionCode id="EC90F1D5FFAFFF83FB8CFE23FB666200" box="[1112,1182,487,513]" pageId="15" pageNumber="76">WVB</collectionCode>
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) were situated in the same lineage as the already published
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<taxonomicName id="4D811293FFAFFF83FAD8FDCDFC0A6247" class="Variosea" family="Angulamoebidae" genus="Angulamoeba" higherTaxonomySource="GBIF" kingdom="Protozoa" pageId="15" pageNumber="76" phylum="Amoebozoa" rank="species" species="microcystivorans">
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<emphasis id="B8F5B502FFAFFF83FAD8FDCDFC0A6247" italics="true" pageId="15" pageNumber="76">Angulamoeba microcystivorans</emphasis>
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</taxonomicName>
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sequences (
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<bibRefCitation id="EE1014E1FFAFFF83FBABFDE8FA536247" author="Van Wichelen J. & van Gremberghe I. & Vanormelingen P. & DebeerA. - E. & Leporcq B. & Menzel D. & Codd G. A. & Descy J. - P. & Vyverman W." box="[1151,1451,556,582]" pageId="15" pageNumber="76" pagination="2797 - 2813" refId="ref20559" refString="Van Wichelen J., van Gremberghe I., Vanormelingen P., DebeerA. - E., Leporcq B., Menzel D., Codd G. A., Descy J. - P., Vyverman W. (2010) Strong effects of amoebae grazing on the biomass and genetic structure of a Microcystis bloom (Cyanobacteria). Environ. Microbiol. 12: 2797 - 2813" type="journal article" year="2010">
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Van Wichelen
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<emphasis id="B8F5B502FFAFFF83FAFFFDE9FAA76247" box="[1323,1375,556,582]" italics="true" pageId="15" pageNumber="76">et al</emphasis>
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||
. 2010
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||
</bibRefCitation>
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||
,
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||
<bibRefCitation id="EE1014E1FFAFFF83FCFDFD8BFBFD6268" author="Berney C. & Geisen S. & Van Wichelen J. & Nitsche F. & Vanormelingen P. & Bonkowski M. & Bass D." box="[809,1029,590,617]" pageId="15" pageNumber="76" pagination="271 - 295" refId="ref16560" refString="Berney C., Geisen S., Van Wichelen J., Nitsche F., Vanormelingen P., Bonkowski M., Bass D. (2015) Expansion of the ' reticulosphere': diversity of novel branching and network-forming amoebae helps to define Variosea (Amoebozoa). Protist 166: 271 - 295" type="journal article" year="2015">
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Berney
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||
<emphasis id="B8F5B502FFAFFF83FC50FD8BFC4F6269" box="[900,951,590,616]" italics="true" pageId="15" pageNumber="76">et al</emphasis>
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||
. 2015
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</bibRefCitation>
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).
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<taxonomicName id="4D811293FFAFFF83FBC3FD8BFAF86269" box="[1047,1280,591,617]" class="Variosea" family="Angulamoebidae" genus="Angulamoeba" higherTaxonomySource="GBIF" kingdom="Protozoa" pageId="15" pageNumber="76" phylum="Amoebozoa" rank="species" species="microcystivorans">
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<emphasis id="B8F5B502FFAFFF83FBC3FD8BFAF86269" box="[1047,1280,591,617]" italics="true" pageId="15" pageNumber="76">A. microcystivorans</emphasis>
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</taxonomicName>
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sequences differed by 0.0–0.3% (0–3 bp) from each other. The nearest other sequence, obtained from a natural sample, differed by 6.6–7.5% (65–111 bp) from
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<taxonomicName id="4D811293FFAFFF83FB4FFD72FA7D62D1" box="[1179,1413,694,720]" class="Variosea" family="Angulamoebidae" genus="Angulamoeba" higherTaxonomySource="GBIF" kingdom="Protozoa" pageId="15" pageNumber="76" phylum="Amoebozoa" rank="species" species="microcystivorans">
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<emphasis id="B8F5B502FFAFFF83FB4FFD72FA7D62D1" box="[1179,1413,694,720]" italics="true" pageId="15" pageNumber="76">A. microcystivorans</emphasis>
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</taxonomicName>
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.
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</paragraph>
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<paragraph id="8A3E6910FFAFFF83FC9BFD1CFA5663C3" blockId="15.[809,1456,418,1169]" pageId="15" pageNumber="76">
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The trophozoites of all our strains were elongated, deeply inclined, sometimes seemingly connected with filopodia, and became aggregated into a plasmodiumlike mucilage matrix at high population densities. They had an amoeboflagellate (1–3 flagella) and a cyst stage (
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<figureCitation id="12BA7595FFAFFF83FCE5FC41FC7F639E" box="[817,903,901,927]" captionStart="Fig" captionStartId="17.[125,160,1778,1800]" captionTargetId="figure-10@18.[148,1448,222,1933]" captionTargetPageId="18" captionText="Fig. 8. A – 18S rDNA maximum likelihood phylogeny of Angulamoeba. Sequences new for this study are indicated in bold. ML bootstrap values respectively posterior probabilities are shown at the nodes. GenBank accession numbers are given together with the species names. B – LM pictures of Angulamoeba microcystivorans (strains A1WVB (1, 2, 4) and A4WVB (3)) showing the characteristic rusty-colored plasmodium-like mucilage matrix with embedded trophozoites devouring a culture of Microcystis aeruginosa colonies (1–2), multi-vacuolated trophozoites that are seemingly connected by their filopodia (3) and amoeba-flagellates in different stages of transition (4). Scale bars: 200 µm (1), 100 µm (2), 20 µm (3, 4)." figureDoi="http://doi.org/10.5281/zenodo.12538733" httpUri="https://zenodo.org/record/12538733/files/figure.png" pageId="15" pageNumber="76">Fig. 8B</figureCitation>
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) and fed voraciously on
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<taxonomicName id="4D811293FFAFFF83FB4AFC42FADB639E" authority="Lemmermann, 1907 " box="[1182,1315,902,927]" class="Cyanobacteriia" family="Microcystaceae" genus="Microcystis" kingdom="Bacteria" order="Cyanobacteriales" pageId="15" pageNumber="76" phylum="Cyanobacteria" rank="genus">
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||
<emphasis id="B8F5B502FFAFFF83FB4AFC42FADB639E" box="[1182,1315,902,927]" italics="true" pageId="15" pageNumber="76">Microcystis</emphasis>
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</taxonomicName>
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, resulting in the clearance of
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<taxonomicName id="4D811293FFAFFF83FC31FC6CFB9263C0" authority="Lemmermann, 1907 " box="[997,1130,936,961]" class="Cyanobacteriia" family="Microcystaceae" genus="Microcystis" kingdom="Bacteria" order="Cyanobacteriales" pageId="15" pageNumber="76" phylum="Cyanobacteria" rank="genus">
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||
<emphasis id="B8F5B502FFAFFF83FC31FC6CFB9263C0" box="[997,1130,936,961]" italics="true" pageId="15" pageNumber="76">Microcystis</emphasis>
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</taxonomicName>
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cultures in a matter of days.
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</paragraph>
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<paragraph id="8A3E6910FFAFFF83FC9BFC0EFBD76490" blockId="15.[809,1456,418,1169]" pageId="15" pageNumber="76">
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The morphology and 18S rDNA sequence of our strains were similar to our previously studied strain A1
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<collectionCode id="EC90F1D5FFAFFF83FC9DFBCBFC6A6428" box="[841,914,1039,1065]" pageId="15" pageNumber="76">WVB</collectionCode>
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isolated from the same bloom sample and newly described as
|
||
<taxonomicName id="4D811293FFAFFF83FBE5FBF6FBE1646E" authority="(Berney et al. 2015)" baseAuthorityName="Berney" baseAuthorityYear="2015" class="Variosea" family="Angulamoebidae" genus="Angulamoeba" higherTaxonomySource="GBIF" kingdom="Protozoa" pageId="15" pageNumber="76" phylum="Amoebozoa" rank="species" species="microcystivorans">
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<emphasis id="B8F5B502FFAFFF83FBE5FBF6FA57644D" box="[1073,1455,1074,1100]" italics="true" pageId="15" pageNumber="76">Angulamoeba microcystivorans</emphasis>
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||
(
|
||
<bibRefCitation id="EE1014E1FFAFFF83FCE5FB90FBE9646E" author="Berney C. & Geisen S. & Van Wichelen J. & Nitsche F. & Vanormelingen P. & Bonkowski M. & Bass D." box="[817,1041,1108,1135]" pageId="15" pageNumber="76" pagination="271 - 295" refId="ref16560" refString="Berney C., Geisen S., Van Wichelen J., Nitsche F., Vanormelingen P., Bonkowski M., Bass D. (2015) Expansion of the ' reticulosphere': diversity of novel branching and network-forming amoebae helps to define Variosea (Amoebozoa). Protist 166: 271 - 295" type="journal article" year="2015">
|
||
Berney
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||
<emphasis id="B8F5B502FFAFFF83FC5BFB91FC3A646F" box="[911,962,1108,1134]" italics="true" pageId="15" pageNumber="76">et al</emphasis>
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||
. 2015
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</bibRefCitation>
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||
)
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</taxonomicName>
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. We thus concluded they belonged to this species as well.
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</paragraph>
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</treatment>
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||
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