<documentid="D8E380665CE8A75FB34C92453560125C"ID-CLB-Dataset="298094"ID-DOI="10.1515/bot-2015-0051"ID-GBIF-Dataset="e6623e1e-e641-4c70-9838-d8975147c758"ID-ISSN="1437-4323"ID-Zenodo-Dep="11359985"IM.bibliography_approvedBy="carolina"IM.illustrations_approvedBy="carolina"IM.materialsCitations_approvedBy="carolina"IM.metadata_approvedBy="felipe"IM.tables_approvedBy="carolina"IM.taxonomicNames_approvedBy="carolina"IM.treatments_approvedBy="carolina"checkinTime="1716847319956"checkinUser="felipe"docAuthor="Yaegashi, Kousuke, Yamagishi, Yukimasa, Uwai, Shinya, Abe, Tsuyoshi, Eria Santiañez, Wilfred John & Kogame, Kazuhiro"docDate="2015"docId="066ADA3B8F47C15AFF2E8890A2197C33"docLanguage="en"docName="BotMar.58.5.331-343.pdf"docOrigin="Botanica Marina (Warsaw, Poland) 58 (5)"docSource="http://dx.doi.org/10.1515/bot-2015-0051"docStyle="DocumentStyle:9102D1D0F376D6FBA22A1B5DFA71D3A3.2:BotMar.2015-.journal_article.closed"docStyleId="9102D1D0F376D6FBA22A1B5DFA71D3A3"docStyleName="BotMar.2015-.journal_article.closed"docStyleVersion="2"docTitle="Acinetospora asiatica Yaegashi, Yamagishi et Kogame 2015, sp. nov."docType="treatment"docVersion="6"lastPageNumber="338"masterDocId="FA53A2438F43C15DFFA68E3CA32E795D"masterDocTitle="Two species of the genus Acinetospora (Ectocarpales, Phaeophyceae) from Japan: A. filamentosa comb. nov. and A. asiatica sp. nov."masterLastPageNumber="343"masterPageNumber="331"pageNumber="335"updateTime="1717620704838"updateUser="ExternalLinkService">
<mods:titleid="9AE92F79CF2C5D27A6DB8FA27CAA01CE">Two species of the genus Acinetospora (Ectocarpales, Phaeophyceae) from Japan: A. filamentosa comb. nov. and A. asiatica sp. nov.</mods:title>
<taxonomicNameid="49C310AE8F47C159FF2E8890A2357FAF"authority="Yaegashi, Yamagishi et Kogame"authorityName="Yaegashi, Yamagishi et Kogame"authorityYear="2015"class="Phaeophyceae"family="Acinetosporaceae"genus="Acinetospora"kingdom="Chromista"order="Ectocarpales"pageId="4"pageNumber="335"phylum="Ochrophyta"rank="species"species="asiatica"status="sp. nov.">
). Erect filaments have scattered meristematic zones consisting of short cells. Crampons are formed on erect filaments at right angles. Cells of erect filaments are 20–77 µm in length and 18–30 µm in width and contain many discoid chloroplasts. Plurilocular zoidangia are ectocarpoid, 90–135 µm in length and 25–40 µm in width, sessile or with one- or two-celled pedicels.
<collectingDateid="EA39B4058F47C159FB0E8C67A61B7B2E"box="[1192,1333,603,627]"pageId="4"pageNumber="335"value="2010-06-15">15 June 2010</collectingDate>
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In Oshoro, plants were collected in May and June but were not found in April and August. In Innoshima, plants were found from January to June. Unilocular sporangia were not found in any of the samples.
In culture, zoids from plurilocular zoidangia germinated unipolarly, forming a germ tube, and developed into branched prostrate filaments (
<figureCitationid="16F877A88F47C159FB098BDCA6317CA4"box="[1199,1311,1504,1529]"captionStart="Figure 3"captionStartId="6.[136,194,1807,1827]"captionTargetBox="[136,1416,174,1776]"captionTargetId="figure-15@6.[136,1416,174,1776]"captionTargetPageId="6"captionText="Figure 3: Acinetospora asiatica. A. Holotype (SAP112509). B–E. Field-collected thalli. B. Erect filaments forming plurilocular zoidangia (asterisks) and crampons (arrows). C. Meristem in erect filament. Arrowheads indicate boundaries between cells. D. Plurilocular zoidangium. E. Crampon. F–H. Cultured thalli (20°C, long day). F. Prostrate filament (arrow) producing erect filaments (arrowheads). G. Prostrate filaments (arrow) producing erect filaments (arrowheads) and plurilocular zoidangia (asterisks). H. Erect filaments producing plurilocular zoidangia (asterisks). A, B, D–H: 15 June 2010, Oshoro, Otaru, Hokkaido. C: 27 June 2010, Shinori, Hakodate, Hokkaido."figureDoi="http://doi.org/10.5281/zenodo.11359997"httpUri="https://zenodo.org/record/11359997/files/figure.png"pageId="4"pageNumber="335">Figure 3F</figureCitation>
). Cells of prostrate filaments became globular, while cells of erect filaments were cylindrical (
<figureCitationid="16F877A88F47C159FBF6881AA7F17F63"box="[1104,1247,1574,1598]"captionStart="Figure 3"captionStartId="6.[136,194,1807,1827]"captionTargetBox="[136,1416,174,1776]"captionTargetId="figure-15@6.[136,1416,174,1776]"captionTargetPageId="6"captionText="Figure 3: Acinetospora asiatica. A. Holotype (SAP112509). B–E. Field-collected thalli. B. Erect filaments forming plurilocular zoidangia (asterisks) and crampons (arrows). C. Meristem in erect filament. Arrowheads indicate boundaries between cells. D. Plurilocular zoidangium. E. Crampon. F–H. Cultured thalli (20°C, long day). F. Prostrate filament (arrow) producing erect filaments (arrowheads). G. Prostrate filaments (arrow) producing erect filaments (arrowheads) and plurilocular zoidangia (asterisks). H. Erect filaments producing plurilocular zoidangia (asterisks). A, B, D–H: 15 June 2010, Oshoro, Otaru, Hokkaido. C: 27 June 2010, Shinori, Hakodate, Hokkaido."figureDoi="http://doi.org/10.5281/zenodo.11359997"httpUri="https://zenodo.org/record/11359997/files/figure.png"pageId="4"pageNumber="335">Figure 3F, G</figureCitation>
). Prostrate filaments formed erect filaments which tapered slightly to a pseudohair or a hair with short cells (like those of meristems) near their base and longer pale cells in the upper portion. Plurilocular zoidangia were formed on prostrate filaments and the lowermost portion of young erect filaments (
<figureCitationid="16F877A88F47C159FCC888CAA0F57E53"box="[878,987,1782,1806]"captionStart="Figure 3"captionStartId="6.[136,194,1807,1827]"captionTargetBox="[136,1416,174,1776]"captionTargetId="figure-15@6.[136,1416,174,1776]"captionTargetPageId="6"captionText="Figure 3: Acinetospora asiatica. A. Holotype (SAP112509). B–E. Field-collected thalli. B. Erect filaments forming plurilocular zoidangia (asterisks) and crampons (arrows). C. Meristem in erect filament. Arrowheads indicate boundaries between cells. D. Plurilocular zoidangium. E. Crampon. F–H. Cultured thalli (20°C, long day). F. Prostrate filament (arrow) producing erect filaments (arrowheads). G. Prostrate filaments (arrow) producing erect filaments (arrowheads) and plurilocular zoidangia (asterisks). H. Erect filaments producing plurilocular zoidangia (asterisks). A, B, D–H: 15 June 2010, Oshoro, Otaru, Hokkaido. C: 27 June 2010, Shinori, Hakodate, Hokkaido."figureDoi="http://doi.org/10.5281/zenodo.11359997"httpUri="https://zenodo.org/record/11359997/files/figure.png"pageId="4"pageNumber="335">Figure 3G</figureCitation>
) at 10–20°C, 2–3 weeks after germination. Erect filaments grew longer than prostrate filaments and formed plurilocular zoidangia (
<figureCitationid="16F877A88F47C159FB0F8907A6367E0E"box="[1193,1304,1851,1875]"captionStart="Figure 3"captionStartId="6.[136,194,1807,1827]"captionTargetBox="[136,1416,174,1776]"captionTargetId="figure-15@6.[136,1416,174,1776]"captionTargetPageId="6"captionText="Figure 3: Acinetospora asiatica. A. Holotype (SAP112509). B–E. Field-collected thalli. B. Erect filaments forming plurilocular zoidangia (asterisks) and crampons (arrows). C. Meristem in erect filament. Arrowheads indicate boundaries between cells. D. Plurilocular zoidangium. E. Crampon. F–H. Cultured thalli (20°C, long day). F. Prostrate filament (arrow) producing erect filaments (arrowheads). G. Prostrate filaments (arrow) producing erect filaments (arrowheads) and plurilocular zoidangia (asterisks). H. Erect filaments producing plurilocular zoidangia (asterisks). A, B, D–H: 15 June 2010, Oshoro, Otaru, Hokkaido. C: 27 June 2010, Shinori, Hakodate, Hokkaido."figureDoi="http://doi.org/10.5281/zenodo.11359997"httpUri="https://zenodo.org/record/11359997/files/figure.png"pageId="4"pageNumber="335">Figure 3H</figureCitation>
) and scattered meristems. Cells of erect filaments were 23–78 µm in length and 20–32 µm in width. Heterokont zoids from plurilocular zoidangia possessed an eyespot. Settled zoids from plurilocular zoidangia were round and 9.3–10.8 µm in diameter. Unilocular sporangia were not found in any culture condition. In two strains, no reproductive organs were formed at all (
<tableCitationid="C3415E968F44C15AFED18F7AA2EB7803"box="[375,453,326,350]"captionStart="Table 1"captionStartId="2.[136,186,420,443]"captionTargetBox="[136,1899,482,1695]"captionText="Table 1: Samples of Acinetospora from Japan used for phylogenetic analyses in this study."httpUri="http://table.plazi.org/id/DABC3BA58F41C15FFF2E8F98A0E678E6"pageId="7"pageNumber="338"tableUuid="DABC3BA58F41C15FFF2E8F98A0E678E6">Table 1</tableCitation>
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. A–C. Field-collected thalli. A. Erect filaments with crampons (arrow) and unilocular sporangia (asterisks). B. Unilocular sporangium. C. Crampon. D–G. Cultured thalli (20
</emphasis>
°C, long day). D. Young prostrate filaments (arrows) forming plurilocular zoidangia (asterisks). E. Prostrate filament (arrow), young erect filaments (arrowheads) and plurilocular zoidangia (asterisks). F. Erect filaments forming unilocular sporangia (asterisks). G. Unilocular sporangia. A–G: 18 June 2010, Iwagasaki, Niigata Pref.
<taxonomicNameid="49C310AE8F45C15BFF438933A2857E7E"authorityName="Yaegashi, Yamagishi et Kogame"authorityYear="2015"box="[229,427,1807,1827]"class="Phaeophyceae"family="Acinetosporaceae"genus="Acinetospora"kingdom="Chromista"order="Ectocarpales"pageId="6"pageNumber="337"phylum="Ochrophyta"rank="species"species="asiatica">
. A. Holotype (SAP112509). B–E. Field-collected thalli. B. Erect filaments forming plurilocular zoidangia (asterisks) and crampons (arrows). C. Meristem in erect filament. Arrowheads indicate boundaries between cells. D. Plurilocular zoidangium. E. Crampon. F–H. Cultured thalli (20
</emphasis>
°C, long day). F. Prostrate filament (arrow) producing erect filaments (arrowheads). G. Prostrate filaments (arrow) producing erect filaments (arrowheads) and plurilocular zoidangia (asterisks). H. Erect filaments producing plurilocular zoidangia (asterisks). A, B, D–H: 15 June 2010, Oshoro, Otaru, Hokkaido. C: 27 June 2010, Shinori, Hakodate, Hokkaido.
<taxonomicNameid="49C310AE8F44C15AFDF18FCFA22C7B70"authorityName="Yaegashi, Uwai et Kogame"authorityYear="2015"baseAuthorityName="Yaegashi & Yamagishi & Uwai & Abe & Eria Santiañez & Kogame"baseAuthorityYear="2015"class="Phaeophyceae"family="Acinetosporaceae"genus="Acinetospora"kingdom="Chromista"order="Ectocarpales"pageId="7"pageNumber="338"phylum="Ochrophyta"rank="species"species="filamentosa">
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(16 samples). Alignment length was 1476 bp. BI and
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trees were similar and highly supported clades corresponded between the trees. Samples of
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<figureCitationid="16F877A88F44C15AFE9D8CFFA2B57B86"box="[315,411,707,731]"captionStart="Figure 4"captionStartId="8.[136,194,1864,1884]"captionTargetBox="[136,1259,174,1833]"captionTargetId="figure-16@8.[136,1259,174,1833]"captionTargetPageId="8"captionText="Figure 4: Bayesian tree of Ectocarpales inferred from rbcL sequences. Posterior probabilities (>0.95) and bootstrap percentages (>80) from maximum likelihood analysis are indicated near branches. “Ch” indicates Chordariaceae, “Ad” Adenocystaceae, “Ec” Ectocarpaceae and “Sc” Scytosiphonaceae. Asterocladon species are outgroup taxa. Scale bar refers to substitutions per site."figureDoi="http://doi.org/10.5281/zenodo.11360001"httpUri="https://zenodo.org/record/11360001/files/figure.png"pageId="7"pageNumber="338">Figure 4</figureCitation>
). Samples of
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<taxonomicNameid="49C310AE8F44C15AFE3B8D17A1167A1E"authorityName="Yaegashi, Uwai et Kogame"authorityYear="2015"baseAuthorityName="Yaegashi & Yamagishi & Uwai & Abe & Eria Santiañez & Kogame"baseAuthorityYear="2015"box="[413,568,811,835]"class="Phaeophyceae"family="Acinetosporaceae"genus="Acinetospora"kingdom="Chromista"order="Ectocarpales"pageId="7"pageNumber="338"phylum="Ochrophyta"rank="species"species="filamentosa">A. filamentosa</taxonomicName>
<taxonomicNameid="49C310AE8F44C15AFDB78D72A1FD7A3B"authorityName="Hamel ex J. Feldmann"authorityYear="1937"box="[529,723,846,870]"class="Phaeophyceae"family="Acinetosporaceae"kingdom="Chromista"order="Ectocarpales"pageId="7"pageNumber="338"phylum="Ochrophyta"rank="family">Acinetosporaceae</taxonomicName>
clade. Sequence differences (p-distances) between
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<taxonomicNameid="49C310AE8F44C15AFEFD8DE4A2E27AAD"authorityName="Yaegashi, Yamagishi et Kogame"authorityYear="2015"box="[347,460,984,1008]"class="Phaeophyceae"family="Acinetosporaceae"genus="Acinetospora"kingdom="Chromista"order="Ectocarpales"pageId="7"pageNumber="338"phylum="Ochrophyta"rank="species"species="asiatica">
<taxonomicNameid="49C310AE8F44C15AFF768A22A25F7D68"authorityName="Yaegashi, Uwai et Kogame"authorityYear="2015"baseAuthorityName="Yaegashi & Yamagishi & Uwai & Abe & Eria Santiañez & Kogame"baseAuthorityYear="2015"box="[208,369,1053,1078]"class="Phaeophyceae"family="Acinetosporaceae"genus="Acinetospora"kingdom="Chromista"order="Ectocarpales"pageId="7"pageNumber="338"phylum="Ochrophyta"rank="species"species="filamentosa">
<taxonomicNameid="49C310AE8F44C15AFDC78A22A1F67D6B"authorityName="Yaegashi, Yamagishi et Kogame"authorityYear="2015"box="[609,728,1054,1078]"class="Phaeophyceae"family="Acinetosporaceae"genus="Acinetospora"kingdom="Chromista"order="Ectocarpales"pageId="7"pageNumber="338"phylum="Ochrophyta"rank="species"species="asiatica">
<figureCitationid="16F877A88F44C15AFDA28A7CA1707D05"box="[516,606,1088,1112]"captionStart="Figure 5"captionStartId="9.[166,224,1493,1513]"captionTargetBox="[166,1446,174,1462]"captionTargetId="figure-15@9.[166,1446,174,1462]"captionTargetPageId="9"captionText="Figure 5: Neighbour-joining tree of Acinetospora and related species inferred from cox1 sequences. Taxa in boldface were sequences determined in the present study. Bootstrap percentages (>80) are indicated near branches. Ectocarpus siliculosus is an outgroup. Scale bar refers to substitutions per site."figureDoi="http://doi.org/10.5281/zenodo.11360003"httpUri="https://zenodo.org/record/11360003/files/figure.png"pageId="7"pageNumber="338">Figure 5</figureCitation>
) formed three separate clades, each with full support. The clade of
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