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<document ID-DOI="http://dx.doi.org/10.3897/mycokeys.86.78989" ID-GBIF-Dataset="fe16302f-c032-4927-91c0-5427d3820c2b" ID-PMC="PMC8825628" ID-Pensoft-Pub="1314-4049-86-147" ID-Pensoft-UUID="2B1A9351D28153C4B5F319067A757969" ID-PubMed="35145340" ModsDocID="1314-4049-86-147" checkinTime="1643737462290" checkinUser="pensoft" docAuthor="Sugita, Ryosuke &amp; Tanaka, Kazuaki" docDate="2022" docId="07C7BEFD888354ABB33304BC7976E268" docLanguage="en" docName="MycoKeys 86: 147-176" docOrigin="MycoKeys 86" docPubDate="2022-02-01" docSource="http://dx.doi.org/10.3897/mycokeys.86.78989" docTitle="Thyridium flavostromatum R. Sugita &amp; Kaz. Tanaka 2022, sp. nov." docType="treatment" docVersion="4" id="2B1A9351D28153C4B5F319067A757969" lastPageNumber="147" masterDocId="2B1A9351D28153C4B5F319067A757969" masterDocTitle="Thyridium revised: Synonymisation of Phialemoniopsis under Thyridium and establishment of a new order, Thyridiales" masterLastPageNumber="176" masterPageNumber="147" pageNumber="147" updateTime="1668136783043" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Thyridium revised: Synonymisation of Phialemoniopsis under Thyridium and establishment of a new order, Thyridiales</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Sugita, Ryosuke</mods:namePart>
<mods:affiliation>Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036 - 8561, Japan &amp; The United Graduate School of Agricultural Sciences, Iwate University, 18 - 8 Ueda 3 chome, Morioka, Iwate 020 - 8550, Japan</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Tanaka, Kazuaki</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-7037-0774</mods:nameIdentifier>
<mods:affiliation>Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036 - 8561, Japan</mods:affiliation>
<mods:nameIdentifier type="email">k-tanaka@hirosaki-u.ac.jp</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>MycoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2022</mods:date>
<mods:detail type="pubDate">
<mods:number>2022-02-01</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>86</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>147</mods:start>
<mods:end>176</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/mycokeys.86.78989</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/mycokeys.86.78989</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-4049-86-147</mods:identifier>
<mods:identifier type="Pensoft-UUID">2B1A9351D28153C4B5F319067A757969</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="193243876" LSID="urn:lsid:plazi:treatment:07C7BEFD888354ABB33304BC7976E268" httpUri="http://treatment.plazi.org/id/07C7BEFD888354ABB33304BC7976E268" lastPageNumber="147" pageId="0" pageNumber="147">
<subSubSection pageId="0" pageNumber="147" type="nomenclature">
<paragraph pageId="0" pageNumber="147">
<taxonomicName LSID="07C7BEFD-8883-54AB-B333-04BC7976E268" authority="R. Sugita &amp; Kaz. Tanaka" authorityName="R. Sugita &amp; Kaz. Tanaka" authorityYear="2022" class="Ascomycetes" family="Thyridiaceae" genus="Thyridium" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Thyridium flavostromatum" order="Thyridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="flavostromatum" status="sp. nov.">Thyridium flavostromatum R. Sugita &amp; Kaz. Tanaka</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="147">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="description">
<paragraph pageId="0" pageNumber="147">
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Thyridium flavostromatum (A-S KT 3891 = HHUF 30647 T-AC culture KT 3891 = MAFF 247509) A-S sexual morph A-C appearance of stromata on substrate D, E ascomata in longitudinal section (D in 2 % KOH) F ostiolar neck of ascoma G paraphyses H ascomatal wall I-K asci L apex of the ascus M stipe of the ascus N-R ascospores S germinating ascospore T-AC hyphomycetous asexual morph T sporulation in culture U phialides V slimy conidial heads W conidiophores X phialide Y adelophialide Z-AB conidia AC chlamydospores and conidia. Scale bars: 1 mm (A); 500 µm (B, C); 100 µm (D, E); 50 µm (F); 10 µm (G-K, M, S, U, V); 5 µm (L, N-R, W-AC); 250 µm (T)." figureDoi="10.3897/mycokeys.86.78989.figure3" httpUri="https://binary.pensoft.net/fig/640745" pageId="0" pageNumber="147">Figs 3</figureCitation>
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Colony characters of Thyridium species used in this study on MEA (bottom right), OA (bottom left) and PDA (upper) within 1 week at 25 ° C in the dark A T. flavostromatum (culture KT 3891 = MAFF 247509) B T. pluriloculosum (culture KT 3803 = MAFF 247508) C T. punctulatum (culture KT 3905 = MAFF 247510). Scale bars: 3 cm (A-C)." figureDoi="10.3897/mycokeys.86.78989.figure6" httpUri="https://binary.pensoft.net/fig/640748" pageId="0" pageNumber="147">, 6A</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="holotype">
<paragraph pageId="0" pageNumber="147">Holotype.</paragraph>
<paragraph pageId="0" pageNumber="147">
Japan, Yamaguchi, Nagato, Misumikami, near Kusaritoge, on dead twigs of
<taxonomicName class="Liliopsida" family="Poaceae" genus="Phyllostachys" kingdom="Plantae" lsidName="Phyllostachys pubescens" order="Poales" pageId="0" pageNumber="147" phylum="Tracheophyta" rank="species" species="pubescens">
<emphasis italics="true" pageId="0" pageNumber="147">Phyllostachys pubescens</emphasis>
</taxonomicName>
, 26 March 2018, K. Tanaka, K. Arayama and R. Siguta, KT 3891 (HHUF 30647, holotype designated here), living culture MAFF 247509.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="etymology">
<paragraph pageId="0" pageNumber="147">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="147">The name refers to yellowish stromata.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="sexual morph">
<paragraph pageId="0" pageNumber="147">Sexual morph.</paragraph>
<paragraph pageId="0" pageNumber="147">
Stromata scattered to grouped, subepidermal, becoming erumpent to superficial, 0.7-1.4 mm long, 0.4-0.7 mm wide, yellowish to dark brown, red in 2% KOH. Ascomata perithecial, subglobose to ampulliform, mostly 2-6 grouped, 190-240
<normalizedToken originalValue="µm">µm</normalizedToken>
high, 200-220
<normalizedToken originalValue="µm">µm</normalizedToken>
diam., immersed in stromata to erumpent through host surface. Ascomatal wall 15-23
<normalizedToken originalValue="µm">µm</normalizedToken>
thick, composed of 5-8 layers of polygonal, 2.5-7
<normalizedToken originalValue="×">x</normalizedToken>
1.5-3.5
<normalizedToken originalValue="µm">µm</normalizedToken>
, dark brown cells. Ostiolar neck central, cylindrical, 80-140
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 55-90
<normalizedToken originalValue="µm">µm</normalizedToken>
wide, periphysate. Paraphyses numerous, septate, unbranched, cylindrical, 50-105
<normalizedToken originalValue="µm">µm</normalizedToken>
long. Asci unitunicate, cylindrical, 62.5-90
<normalizedToken originalValue="×">x</normalizedToken>
6.5-10
<normalizedToken originalValue="µm">µm</normalizedToken>
(av. 78.7
<normalizedToken originalValue="×">x</normalizedToken>
7.8
<normalizedToken originalValue="µm">µm</normalizedToken>
, n = 30), broadly rounded at the apex, with a pronounced non-amyloid apical annulus, short-stalked (5-17.5
<normalizedToken originalValue="µm">µm</normalizedToken>
long), with 8 ascospores. Ascospores obovoid to ellipsoid, smooth, hyaline to pale brown, with 3 transverse and 0-2 vertical septa, 9.5-14
<normalizedToken originalValue="×">x</normalizedToken>
5-7.5
<normalizedToken originalValue="µm">µm</normalizedToken>
(av. 11.3
<normalizedToken originalValue="×">x</normalizedToken>
5.8
<normalizedToken originalValue="µm">µm</normalizedToken>
, n = 50), l/w 1.4-2.5 (av. 2.0, n = 50).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="asexual morph (nature)">
<paragraph pageId="0" pageNumber="147">Asexual morph (nature).</paragraph>
<paragraph pageId="0" pageNumber="147">Not observed.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="asexual morph (culture)">
<paragraph pageId="0" pageNumber="147">Asexual morph (culture).</paragraph>
<paragraph pageId="0" pageNumber="147">
Hyphomycetous asexual morph formed. Conidiophores micronematous, mononematous, hyaline, thin-walled, simple or irregularly branched, with branches bearing a group of 2-3 phialides terminally. Phialides swollen at the base, tapering at the tip, hyaline, 3-6
<normalizedToken originalValue="×">x</normalizedToken>
1-1.5
<normalizedToken originalValue="µm">µm</normalizedToken>
. Adelophialides rarely present. Conidia ellipsoidal to allantoid, with a slightly apiculate base, hyaline, smooth-walled, 2-7
<normalizedToken originalValue="×">x</normalizedToken>
1-2.5
<normalizedToken originalValue="µm">µm</normalizedToken>
(av. 4.1
<normalizedToken originalValue="×">x</normalizedToken>
1.6
<normalizedToken originalValue="µm">µm</normalizedToken>
, n = 50). Chlamydospores rarely present, solitary, 3.5-6.5
<normalizedToken originalValue="µm">µm</normalizedToken>
diam., hyaline to pale brown, thick- and rough-walled.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="description">
<paragraph pageId="0" pageNumber="147">Culture characteristics.</paragraph>
<paragraph pageId="0" pageNumber="147">
Colonies on MEA at 25 °C attained 28-29 mm diam. after a week in the dark, whitish. On OA attained 35-37 mm diam., whitish. On PDA attained 28-31 mm diam., whitish to buff (45;
<bibRefCitation author="Rayner, RW" journalOrPublisher="Mycotaxon" pageId="0" pageNumber="147" refId="B49" refString="Rayner, RW, 1970. A mycological colour chart. CMI and British Mycological Society. Kew, Surrey." title="A mycological colour chart. CMI and British Mycological Society. Kew, Surrey." year="1970">Rayner 1970</bibRefCitation>
) (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Colony characters of Thyridium species used in this study on MEA (bottom right), OA (bottom left) and PDA (upper) within 1 week at 25 ° C in the dark A T. flavostromatum (culture KT 3891 = MAFF 247509) B T. pluriloculosum (culture KT 3803 = MAFF 247508) C T. punctulatum (culture KT 3905 = MAFF 247510). Scale bars: 3 cm (A-C)." figureDoi="10.3897/mycokeys.86.78989.figure6" httpUri="https://binary.pensoft.net/fig/640748" pageId="0" pageNumber="147">6A</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="147" type="notes">
<paragraph pageId="0" pageNumber="147">Notes.</paragraph>
<paragraph pageId="0" pageNumber="147">
Phylogenetic analyses based on ITS,
<emphasis italics="true" pageId="0" pageNumber="147">act</emphasis>
, and
<emphasis italics="true" pageId="0" pageNumber="147">tub2</emphasis>
sequences suggested that
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. flavostromatum" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="flavostromatum">
<emphasis italics="true" pageId="0" pageNumber="147">T. flavostromatum</emphasis>
</taxonomicName>
was closely related to
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. curvatum" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="curvatum">
<emphasis italics="true" pageId="0" pageNumber="147">T. curvatum</emphasis>
</taxonomicName>
,
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. hongokgense" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="hongokgense">
<emphasis italics="true" pageId="0" pageNumber="147">T. hongokgense</emphasis>
</taxonomicName>
and
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. limonesiae" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="limonesiae">
<emphasis italics="true" pageId="0" pageNumber="147">T. limonesiae</emphasis>
</taxonomicName>
(Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Maximum-likelihood tree of Thyridium species based on each ITS (A), act (B), tub 2 (C) and combined sequences (ITS- act - tub 2; D). ML bootstrap proportion (BP) greater than 70 % and Bayesian posterior probabilities (PP) above 0.95 are presented at the nodes as MLBP / Bayesian PP. A hyphen (' - ') indicates values lower than 70 % BP or 0.95 PP and a node not present in the Bayesian analysis is shown with ' x'. Ex-holotype and epitype strains are shown in bold and the newly obtained sequences are shown in red. Strains previously as Phialemoniopsis species are marked with a blue circle. The scale bars represent nucleotide substitutions per site." figureDoi="10.3897/mycokeys.86.78989.figure2" httpUri="https://binary.pensoft.net/fig/640744" pageId="0" pageNumber="147">2</figureCitation>
), of which only
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. hongokgense" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="hongokgense">
<emphasis italics="true" pageId="0" pageNumber="147">T. hongokgense</emphasis>
</taxonomicName>
has unknown conidial state. Although
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. curvatum" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="curvatum">
<emphasis italics="true" pageId="0" pageNumber="147">T. curvatum</emphasis>
</taxonomicName>
forms sporodochial conidiomata (
<bibRefCitation DOI="https://doi.org/10.3852/12-137" author="Perdomo, H" journalOrPublisher="Mycologia" pageId="0" pageNumber="147" pagination="398 - 421" refId="B44" refString="Perdomo, H, Garcia, D, Gene, J, Cano, J, 2013. Phialemoniopsis, a new genus of Sordariomycetes, and new species of Phialemonium and Lecythophora. Mycologia 105: 398 - 421, DOI: https://doi.org/10.3852/12-137" title="Phialemoniopsis, a new genus of Sordariomycetes, and new species of Phialemonium and Lecythophora." url="https://doi.org/10.3852/12-137" volume="105" year="2013">Perdomo et al. 2013</bibRefCitation>
), those are not found in
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. flavostromatum" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="flavostromatum">
<emphasis italics="true" pageId="0" pageNumber="147">T. flavostromatum</emphasis>
</taxonomicName>
. Conidia of
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. limonesiae" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="limonesiae">
<emphasis italics="true" pageId="0" pageNumber="147">T. limonesiae</emphasis>
</taxonomicName>
(2.3-4.9
<normalizedToken originalValue="×">x</normalizedToken>
1.4-2
<normalizedToken originalValue="μm">μm</normalizedToken>
;
<bibRefCitation DOI="https://doi.org/10.1080/22221751.2021.1892458" author="Martinez, DA" journalOrPublisher="Emerging Microbes &amp; Infections" pageId="0" pageNumber="147" pagination="400 - 406" refId="B38" refString="Martinez, DA, Alberto, C, Riat, A, Schuhler, C, Valladares, P, Ninet, B, Kraak, B, Crous, PW, Hou, LW, Trellu, LT, 2021. Phialemoniopsis limonesiae sp. nov. causing cutaneous phaeohyphomycosis in an immunosuppressed woman. Emerging Microbes &amp; Infections 10: 400 - 406, DOI: https://doi.org/10.1080/22221751.2021.1892458" title="Phialemoniopsis limonesiae sp. nov. causing cutaneous phaeohyphomycosis in an immunosuppressed woman." url="https://doi.org/10.1080/22221751.2021.1892458" volume="10" year="2021">Martinez et al. 2021</bibRefCitation>
) are smaller than those of
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. flavostromatum" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="flavostromatum">
<emphasis italics="true" pageId="0" pageNumber="147">T. flavostromatum</emphasis>
</taxonomicName>
(2-7
<normalizedToken originalValue="×">x</normalizedToken>
1-2.5
<normalizedToken originalValue="µm">µm</normalizedToken>
).
<taxonomicName authorityName="R. Sugita &amp; Kaz. Tanaka" authorityYear="2022" class="Ascomycetes" family="Thyridiaceae" genus="Thyridium" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Thyridium flavostromatum" order="Thyridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="flavostromatum">
<emphasis italics="true" pageId="0" pageNumber="147">Thyridium flavostromatum</emphasis>
</taxonomicName>
is similar to
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. lasiacidis" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="lasiacidis">
<emphasis italics="true" pageId="0" pageNumber="147">T. lasiacidis</emphasis>
</taxonomicName>
on
<taxonomicName class="Liliopsida" family="Poaceae" genus="Lasiacis" kingdom="Plantae" lsidName="Lasiacis ligulata" order="Poales" pageId="0" pageNumber="147" phylum="Tracheophyta" rank="species" species="ligulata">
<emphasis italics="true" pageId="0" pageNumber="147">Lasiacis ligulata</emphasis>
</taxonomicName>
(
<bibRefCitation author="Samuels, GJ" journalOrPublisher="Sylloge Fungorum" pageId="0" pageNumber="147" publicationUrl="http://www.cybertruffle.org.uk/cyberliber/" refId="B69" refString="Samuels, GJ, Rogerson, CT, 1989. http://www.cybertruffle.org.uk/cyberliber/" url="http://www.cybertruffle.org.uk/cyberliber/" year="1989">Samuels and Rogerson 1989</bibRefCitation>
) in 1) having yellowish stromata becoming red in KOH, and 2) ellipsoidal ascospores with three transverse septa, with or without one longitudinal septum in 1-2 median cells. However,
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. lasiacidis" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="lasiacidis">
<emphasis italics="true" pageId="0" pageNumber="147">T. lasiacidis</emphasis>
</taxonomicName>
differs from
<taxonomicName class="Sordariomycetes" family="Thyridiaceae" kingdom="Fungi" lsidName="T. flavostromatum" order="Myrmecridiales" pageId="0" pageNumber="147" phylum="Ascomycota" rank="species" species="flavostromatum">
<emphasis italics="true" pageId="0" pageNumber="147">T. flavostromatum</emphasis>
</taxonomicName>
by ascomata with a longer ostiolar neck (90-170
<normalizedToken originalValue="µm">µm</normalizedToken>
long) and dark brown ascospores with terminal pale brown cells (
<bibRefCitation author="Samuels, GJ" journalOrPublisher="Sylloge Fungorum" pageId="0" pageNumber="147" publicationUrl="http://www.cybertruffle.org.uk/cyberliber/" refId="B69" refString="Samuels, GJ, Rogerson, CT, 1989. http://www.cybertruffle.org.uk/cyberliber/" url="http://www.cybertruffle.org.uk/cyberliber/" year="1989">Samuels and Rogerson 1989</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>