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<document ID-DOI="http://dx.doi.org/10.3897/mycokeys.65.47704" ID-GBIF-Dataset="00685a01-0785-47ec-aa0b-77c991ee4b08" ID-PMC="PMC7078340" ID-Pensoft-Pub="1314-4049-65-49" ID-Pensoft-UUID="DED2BF86E6FD56179642F7119604CEB9" ID-PubMed="32206025" ModsDocID="1314-4049-65-49" checkinTime="1583860301782" checkinUser="pensoft" docAuthor="Hou, Lingwei, Hernandez-Restrepo, Margarita, Groenewald, Johannes Zacharias, Cai, Lei &amp; Crous, Pedro W." docDate="2020" docId="34012AEA374251D5A477323A0BB8B57B" docLanguage="en" docName="MycoKeys 65: 49-99" docOrigin="MycoKeys 65" docSource="http://dx.doi.org/10.3897/mycokeys.65.47704" docTitle="Didymella degraaffiae Hern. - Restr., L. W. Hou, L. Cai &amp; Crous 2020, sp. nov." docType="treatment" docVersion="5" id="DED2BF86E6FD56179642F7119604CEB9" lastPageNumber="49" masterDocId="DED2BF86E6FD56179642F7119604CEB9" masterDocTitle="Citizen science project reveals high diversity in Didymellaceae (Pleosporales, Dothideomycetes)" masterLastPageNumber="99" masterPageNumber="49" pageNumber="49" updateTime="1732488328564" updateUser="ExternalLinkService">
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<mods:title id="76F886A9A1BA8D77A085033187CCC9C8">Citizen science project reveals high diversity in Didymellaceae (Pleosporales, Dothideomycetes)</mods:title>
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<mods:namePart id="AFBBAE60355A84348DE16B0AA232FFC6">Hou, Lingwei</mods:namePart>
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<mods:namePart id="12A6294BA74571707691F1598B1AD2BD">Hernandez-Restrepo, Margarita</mods:namePart>
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<mods:namePart id="6D07C3F6BD095047E2A25067B6FB0C39">Groenewald, Johannes Zacharias</mods:namePart>
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<mods:namePart id="6AB287E313B320D11040AE7AFB600D3D">Cai, Lei</mods:namePart>
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<mods:namePart id="B34EE3715A6B6B1F54291A5B91A546DC">Crous, Pedro W.</mods:namePart>
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<mods:date id="677BB13C9BD9C9A4A39F55AF97C8B599">2020</mods:date>
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<mods:number id="55FF2DBA7E09E9EE8C47A781DBFA1F1E">65</mods:number>
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<mods:classification id="C0CE8466A43457599CA95922BCDAB02F">journal article</mods:classification>
<mods:identifier id="38D28330CA80CE818D62461A06F82B64" type="DOI">http://dx.doi.org/10.3897/mycokeys.65.47704</mods:identifier>
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<treatment id="34012AEA374251D5A477323A0BB8B57B" ID-GBIF-Taxon="162481726" LSID="urn:lsid:plazi:treatment:34012AEA374251D5A477323A0BB8B57B" httpUri="http://treatment.plazi.org/id/34012AEA374251D5A477323A0BB8B57B" lastPageNumber="49" pageId="0" pageNumber="49" scope_class="Dothideomycetes" scope_family="Didymellaceae" scope_order="Pleosporales">
<subSubSection id="9B718EC0A88A3BCC357DE2BBCCF11FF0" pageId="0" pageNumber="49" type="nomenclature">
<paragraph id="203D7A2E9086C0C234582574DCB1E335" pageId="0" pageNumber="49">
<taxonomicName id="802CF1AB1DA61D34E0BA296CDF11CD8E" ID-CoL="9Z5PQ" LSID="34012AEA-3742-51D5-A477-323A0BB8B57B" authority="Hern. - Restr., L. W. Hou, L. Cai &amp; Crous" authorityName="Hern. - Restr., L. W. Hou, L. Cai &amp; Crous" authorityYear="2020" class="Dothideomycetes" family="Didymellaceae" genus="Didymella" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Didymella degraaffiae" order="Pleosporales" pageId="0" pageNumber="49" phylum="Ascomycota" rank="species" species="degraaffiae" status="sp. nov.">Didymella degraaffiae Hern.-Restr., L. W. Hou, L. Cai &amp; Crous</taxonomicName>
<taxonomicNameLabel id="A96622F992CF7BAF1EFE896AEBB8A107" pageId="0" pageNumber="49">sp. nov.</taxonomicNameLabel>
<figureCitation id="970EB134EAF81403CBA4613D105BE000" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Didymella degraaffiae (CBS 144956). A, B Colony on OA (front and reverse) C, D colony on MEA (front and reverse) E, F colony on PDA (front and reverse) G, H pycnidia on OA I section of pycnidium J section of pycnidial wall K, L conidiogenous cells M chlamydospores N conidia. Scale bars: 50 μm (H, I); 10 μm (J); 5 μm (K-N)." figureDoi="10.3897/mycokeys.65.47704.figure3" httpUri="https://binary.pensoft.net/fig/388206" pageId="0" pageNumber="49">Figure 3</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="80CAAB18107B5C3F70493EFD712E08D4" pageId="0" pageNumber="49" type="etymology">
<paragraph id="C82431122573BE1A860BBBBFEF872674" pageId="0" pageNumber="49">Etymology.</paragraph>
<paragraph id="9CFFDF3E8500C5A9FE7ACDA70CD82A7E" pageId="0" pageNumber="49">
<taxonomicName id="7C99FD6A0BFE15394F163A41D8952489" authorityName="Hern. - Restr., L. W. Hou, L. Cai &amp; Crous" authorityYear="2020" class="Dothideomycetes" family="Didymellaceae" genus="Didymella" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="degraaffiae" order="Pleosporales" pageId="0" pageNumber="49" phylum="Ascomycota" rank="species" species="degraaffiae">
<emphasis id="8E6BBC1A8D96C8D846AD99DAB19E427E" italics="true" pageId="0" pageNumber="49">degraaffiae</emphasis>
</taxonomicName>
refers to Janne de Graaff who collected the soil sample from which the ex-type strain was isolated.
</paragraph>
</subSubSection>
<subSubSection id="BDDB03FEF6CB73FC77CA6BFF97DD1CBE" pageId="0" pageNumber="49" type="typus">
<paragraph id="89086B7A3AA4741F15F4448712E3285A" pageId="0" pageNumber="49">Typus.</paragraph>
<paragraph id="94796967CA57EA25B9AC2858F7E088EF" pageId="0" pageNumber="49">
The Netherlands. Limburg province, Weert, isolated from garden soil, Mar. 2017, J. de Graaff (
<emphasis id="A7782D479A8904DB65E8FB7C3FB02545" bold="true" italics="true" pageId="0" pageNumber="49">holotype</emphasis>
designated here CBS H-24105, living ex-type culture CBS 144956 = JW 195004).
</paragraph>
<paragraph id="67BDD34AF4E5FD7BA89F55E4108AE811" pageId="0" pageNumber="49">
<emphasis id="773607A4380725D64380DDFA7282B962" italics="true" pageId="0" pageNumber="49">Conidiomata</emphasis>
pycnidial, superficial on the agar or semi-immersed in the agar, scattered or aggregated, mostly confluent, globose, subglobose, lageniform to irregularly-shaped with age, brown to dark brown, ostiolate, covered by hyphal outgrowths, especially near the ostiole, 150-485
<normalizedToken id="DD5784ED24C8FCF2EFEC5D36891B7EE2" originalValue="×">x</normalizedToken>
120-330
<normalizedToken id="5A894980D4030F8F71E65CD28A4E14B9" originalValue="μm">μm</normalizedToken>
; non-papillate or with up to two papillate ostioles; pycnidial wall pseudoparenchymatous, 3-6 layers, 10-55
<normalizedToken id="5B2455DE3B4BC4A8B4CC26A9BEAFC6A8" originalValue="μm">μm</normalizedToken>
thick, outer layers composed of brown, isodiametric cells, 16-33
<normalizedToken id="89D522B6DF034AE7C94A44EA6F7EB721" originalValue="μm">μm</normalizedToken>
diam.
<emphasis id="8012E9EC02BF2574C23A712BA1B06B34" italics="true" pageId="0" pageNumber="49">Conidiogenous cells</emphasis>
phialidic, hyaline, smooth, ampulliform, lageniform, pyriform or globose, 5.5-8.5
<normalizedToken id="A909739A3E974C4ECBDB51ADB4F61ECB" originalValue="×">x</normalizedToken>
5-8
<normalizedToken id="C40877C68619E938F8A4141B64099831" originalValue="μm">μm</normalizedToken>
.
<emphasis id="9F790C63A5E87A9AC31809C2F1FBCC78" italics="true" pageId="0" pageNumber="49">Conidia</emphasis>
ellipsoidal, oblong or oval, thin- and smooth-walled, hyaline, aseptate, 4.5-9(-11)
<normalizedToken id="FEB3237A9D2F7CA2E4AD360552375213" originalValue="×">x</normalizedToken>
3-4.5
<normalizedToken id="98BEFEAF24AE4FE8A4FF89E9ED814E8B" originalValue="μm">μm</normalizedToken>
, 2-6-guttulate, small.
<taxonomicName id="A1B3B6030B5F8C46E33CED8956882ABD" genus="Conidial" lsidName="Conidial matrix" pageId="0" pageNumber="49" rank="species" species="matrix">
<emphasis id="8D6863A5C5FAE57A629700C701ECF5D6" italics="true" pageId="0" pageNumber="49">Conidial matrix</emphasis>
</taxonomicName>
milky white.
</paragraph>
</subSubSection>
<subSubSection id="CB05CBD6990B1BEFF041786E54AB7E16" pageId="0" pageNumber="49" type="description">
<paragraph id="F43C8B078A67DB3C43C1BD82171EEC1C" pageId="0" pageNumber="49">Culture characteristics.</paragraph>
<paragraph id="2441F81EBCE3F21D41BD975F8FA54249" pageId="0" pageNumber="49">Colonies after 7 d at 25 °C, on OA reaching 65-70 mm diam, aerial mycelium floccose, orange to olivaceous, margin regular; reverse black near the centre, pale grey towards the periphery. On MEA reaching 55-60 mm diam, aerial mycelium floccose, buff to pale olivaceous, with white mycelium pellet and radially furrowed zones near the centre, margin regular; reverse buff near the centre, olivaceous to yellow towards the periphery. On PDA reaching 50-55 mm diam, aerial mycelium floccose, concentric circles pale brown, pale olivaceous grey, dark olivaceous, honey, margin irregular; reverse black with a pale olivaceous edge. NaOH spot test negative on OA.</paragraph>
</subSubSection>
<subSubSection id="AD54DD311C644946E1381116520AE952" pageId="0" pageNumber="49" type="notes">
<paragraph id="60CACE70B26EAF5CFF38B3B294F868F3" pageId="0" pageNumber="49">Notes.</paragraph>
<paragraph id="FCE95A238DCD43E51A19BFF2941AD89B" pageId="0" pageNumber="49">
In our phylogenetic analysis,
<taxonomicName id="57E8F3EEAA3DD4B7F3AAEA4A8EC2167F" lsidName="D. degraaffiae" pageId="0" pageNumber="49" rank="species" species="degraaffiae">
<emphasis id="9BC82E15B2AC7B478D94F4A1C7507CD9" italics="true" pageId="0" pageNumber="49">D. degraaffiae</emphasis>
</taxonomicName>
grouped with
<taxonomicName id="8E29AA02D7695968437773B16C619479" lsidName="D. americana" pageId="0" pageNumber="49" rank="species" species="americana">
<emphasis id="2EE9DDEFE12DF8D57A8BCC77390278CA" italics="true" pageId="0" pageNumber="49">D. americana</emphasis>
</taxonomicName>
and
<taxonomicName id="20B9A8B3073FC24ABF11A25D0FB3FC23" lsidName="D. maydis" pageId="0" pageNumber="49" rank="species" species="maydis">
<emphasis id="D98A52CC2C8FB8503F4306439BEAF6FA" italics="true" pageId="0" pageNumber="49">D. maydis</emphasis>
</taxonomicName>
(Figure
<figureCitation id="C804332E6164F0A3CD7F98123529D325" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Phylogenetic tree generated from the maximum-likelihood analysis based on the combined ITS, LSU, tub 2 and rpb 2 sequence alignment of Didymellaceae members. The RAxML bootstrap support values (BS), Bayesian posterior probabilities (PP), and parsimony bootstrap support values (PBS) are given at the nodes (BS / PP / PBS). BS and PBS values represent parsimony bootstrap support values&gt; 50 %. Full supported branches are indicated in bold. The scale bar represents the expected number of changes per site. Ex-type strains are represented in bold. Strains obtained in the current study are printed in green; among them, whilst strains that represent new taxa are printed in red. Some of the basal branches were shortened to facilitate layout (the fraction in round parentheses refers to the presented length compared to the actual length of the branch). The tree was rooted to Coniothyrium palmarum CBS 400.71 and Leptosphaeria doliolum CBS 505.75." figureDoi="10.3897/mycokeys.65.47704.figure1" httpUri="https://binary.pensoft.net/fig/388204" pageId="0" pageNumber="49">1</figureCitation>
). However, morphologically,
<taxonomicName id="84182ECB1119838E8F5352AF9388F42A" lsidName="D. americana" pageId="0" pageNumber="49" rank="species" species="americana">
<emphasis id="1B9EE33D524D38514B6074DFE2F52F67" italics="true" pageId="0" pageNumber="49">D. americana</emphasis>
</taxonomicName>
differs by its smaller conidiogenous cells (3-5
<normalizedToken id="BA7EAE48F7994658815C25791DC39B88" originalValue="×">x</normalizedToken>
3-4
<normalizedToken id="8AA74D01EF63732E0D8729370410BF72" originalValue="μm">μm</normalizedToken>
) and conidia (5-7
<normalizedToken id="DD9141B5FEA97EF02961E9C273BF6ADC" originalValue="×">x</normalizedToken>
2-2.5
<normalizedToken id="87E5A0D430BEBB37754953CFF046DEA9" originalValue="μm">μm</normalizedToken>
) (
<bibRefCitation id="2F19179A0BBF2C99A0416F35C7DDA37D" author="Boerema, GH" journalOrPublisher="Persoonia" pageId="0" pageNumber="49" pagination="197 - 221" refId="B9" refString="Boerema, GH, 1993. Contributions towards a monograph of Phoma (Coelomycetes) - II. Section Peyronellaea. Persoonia 15: 197 - 221" title="Contributions towards a monograph of Phoma (Coelomycetes) - II. Section Peyronellaea." volume="15" year="1993">Boerema 1993</bibRefCitation>
); while
<taxonomicName id="D82FB29191FC3990252EDDBEC0209AEC" lsidName="D. maydis" pageId="0" pageNumber="49" rank="species" species="maydis">
<emphasis id="6DB0D96EBB87B582B42D7258C67EB41F" italics="true" pageId="0" pageNumber="49">D. maydis</emphasis>
</taxonomicName>
differs in having larger conidia (15-17
<normalizedToken id="FFC54F0ABFC6C65E3D7ECFFA922C5BFF" originalValue="×">x</normalizedToken>
3.5-5
<normalizedToken id="80C80B7D3E3EAAA2BC859FF0749361F4" originalValue="μm">μm</normalizedToken>
) (
<bibRefCitation id="E410448B0A954AE7A41D5B3A2834202F" author="De Gruyter, J" journalOrPublisher="Persoonia" pageId="0" pageNumber="49" pagination="85 - 102" refId="B25" refString="De Gruyter, J, 2002. Contributions towards a monograph of Phoma (Coelomycetes) - IX Section Macrospora. Persoonia 18: 85 - 102" title="Contributions towards a monograph of Phoma (Coelomycetes) - IX Section Macrospora." volume="18" year="2002">de Gruyter 2002</bibRefCitation>
). Furthermore,
<taxonomicName id="1784587594785D25BC94EE81211ADF38" lsidName="D. americana" pageId="0" pageNumber="49" rank="species" species="americana">
<emphasis id="956CE81A04CF7EB30F52B72E4B7C7D70" italics="true" pageId="0" pageNumber="49">D. americana</emphasis>
</taxonomicName>
and
<taxonomicName id="F50AE4DF7941F297BEFDD45510ABE37C" lsidName="D. maydis" pageId="0" pageNumber="49" rank="species" species="maydis">
<emphasis id="CCC2E749F16E00CACF8D6861B81B8EBA" italics="true" pageId="0" pageNumber="49">D. maydis</emphasis>
</taxonomicName>
occasionally produced 1-septate conidia, while septate conidia were not observed in
<taxonomicName id="CC087F38DEE7371D7E967CA10A1F62D8" lsidName="D. degraaffiae" pageId="0" pageNumber="49" rank="species" species="degraaffiae">
<emphasis id="C72BFEADC68D5F2ADB7903DD72954140" italics="true" pageId="0" pageNumber="49">D. degraaffiae</emphasis>
</taxonomicName>
.
</paragraph>
<caption id="92327158B0C4B2797EAB69FE67DD7173" doi="10.3897/mycokeys.65.47704.figure3" httpUri="https://binary.pensoft.net/fig/388206" pageId="0" pageNumber="49" start="Figure 3" startId="F3">
<paragraph id="69925DA5D8BD384719A8E7B861042849" pageId="0" pageNumber="49">
<emphasis id="982704FEBE4846ECF855C3B89A606F84" bold="true" pageId="0" pageNumber="49">Figure 3.</emphasis>
<taxonomicName id="1130C2B84755DD54E99ABF0CEC9403B1" authorityName="Hern. - Restr., L. W. Hou, L. Cai &amp; Crous" authorityYear="2020" class="Dothideomycetes" family="Didymellaceae" genus="Didymella" higherTaxonomySource="CoL" kingdom="Fungi" lsidName="Didymella degraaffiae" order="Pleosporales" pageId="0" pageNumber="49" phylum="Ascomycota" rank="species" species="degraaffiae">
<emphasis id="2BC54F7BED599A2D302384E9D534D6F4" italics="true" pageId="0" pageNumber="49">Didymella degraaffiae</emphasis>
</taxonomicName>
(CBS 144956).
<emphasis id="007BEB4FE6E075A4006B4AD69D1BFB59" bold="true" pageId="0" pageNumber="49">A, B</emphasis>
Colony on OA (front and reverse)
<emphasis id="A4E1BAE59E617EE4B0BF24659809D4B1" bold="true" pageId="0" pageNumber="49">C, D</emphasis>
colony on MEA (front and reverse)
<emphasis id="16C9D1D06E6EA76EC949ACA91405B3B8" bold="true" pageId="0" pageNumber="49">E, F</emphasis>
colony on PDA (front and reverse)
<emphasis id="7C945B048519F93730D6327541C0AF3B" bold="true" pageId="0" pageNumber="49">G, H</emphasis>
pycnidia on OA
<emphasis id="9D37AE2CCE992091054DDF6F2F1C7063" bold="true" pageId="0" pageNumber="49">I</emphasis>
section of pycnidium
<emphasis id="5B83F1F3B585528F6C666537A3487B95" bold="true" pageId="0" pageNumber="49">J</emphasis>
section of pycnidial wall
<emphasis id="D159990DD54BA0E391E8129677C76064" bold="true" pageId="0" pageNumber="49">K, L</emphasis>
conidiogenous cells
<emphasis id="3B68C793921F000C33BB65662A4141A2" bold="true" pageId="0" pageNumber="49">M</emphasis>
chlamydospores
<emphasis id="9F530E9204C93EFA29445221520E84D4" bold="true" pageId="0" pageNumber="49">N</emphasis>
conidia. Scale bars: 50
<normalizedToken id="586C4021C41B76A2D9B9AA89342672CF" originalValue="μm">μm</normalizedToken>
(
<emphasis id="B74C13C94BEE3193C8C2E64C3BE55E8B" bold="true" pageId="0" pageNumber="49">H, I</emphasis>
); 10
<normalizedToken id="59D2F7062AF267653697F0E59783993F" originalValue="μm">μm</normalizedToken>
(
<emphasis id="3790AC001FD459AAEAA09F362D195F58" bold="true" pageId="0" pageNumber="49">J</emphasis>
); 5
<normalizedToken id="B8E09BA2A7C6DE3A726D729EB04FEBF4" originalValue="μm">μm</normalizedToken>
(
<emphasis id="F34AA67678BA6C5E900CCAACB7441B75" bold="true" pageId="0" pageNumber="49">K-N</emphasis>
).
</paragraph>
</caption>
</subSubSection>
</treatment>
</document>