Diaporthe pseudofoliicola Q. Yang, 2024
publication ID |
https://dx.doi.org/10.3897/mycokeys.102.113412 |
persistent identifier |
https://treatment.plazi.org/id/054C182C-E989-566D-B604-3EF72EBC4C53 |
treatment provided by |
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scientific name |
Diaporthe pseudofoliicola Q. Yang |
status |
sp. nov. |
Diaporthe pseudofoliicola Q. Yang sp. nov.
Fig. 3 View Figure 3
Diagnosis.
Distinguished from D. longicolla in having smaller alpha conidia; from D. unshiuensis in having narrower conidiophores.
Etymology.
The epithet " Diaporthe pseudofoliicola " refers to its habitat similar to Diaporthe foliicola .
Description.
Asexual morph: Conidiomata on PDA pycnidial, 190-330 μm in diam., superficial, scattered on PDA, dark brown to black, globose, solitary or clustered in groups of 1-3 pycnidia. Pale yellow conidial drops exuding from ostioles. Conidiophores reduced to conidiogenous cells. Conidiogenous cells (10.5-)12.5-18(-22) × 1.3-1.5 μm (n = 30), phialidic, aseptate, cylindrical, straight, densely aggregated, terminal, slightly tapered towards the apex. Alpha conidia 5-6.5(-7) × 2.3-3.0 μm (n = 30), aseptate, hyaline, ellipsoidal to fusiform, biguttulate, both ends obtuse. Beta conidia (27.5-)30-33(-35.5) × 1.2-1.4 µm (n = 30), hyaline, aseptate, filiform, sinuous at one end, eguttulate.
Culture characters.
Culture incubated on PDA at 25 °C, originally flat with white fluffy aerial mycelium, becoming pale brown due to pigment formation, with yellowish-cream conidial drops exuding from the ostioles after 20 days.
Specimens examined.
China. Hainan Province: Chengmai County, on leaves of Camellia oleifera , 110°15'16"E, 19°23'20"N, 25 July 2022, Q. Yang (holotype CSUFT050; ex-type living culture: HNCM045; other living cultures: HNCM046, HNCM047 and HNCM048) GoogleMaps .
Notes.
Four isolates representing D. pseudofoliicola cluster in a well-supported clade (ML/BI = 100/1) and appear most closely related to D. longicolla on Glycine max and D. unshiuensis on Citrus unshiu . Diaporthe pseudofoliicola can be distinguished from D. longicolla , based on ITS, tef1 and tub2 loci (9/462 in ITS, 16/318 in tef1 and 4/444 in tub2); from D. unshiuensis , based on his3 and tef1 loci (51/457 in his3 and 17/318 in tef1). Morphologically, D. pseudofoliicola differs from D. longicolla in having smaller alpha conidia (5-6.5 × 2.3-3.0 μm vs. 6.9-7.2 × 1.6-2.8 μm) ( Santos et al. 2011); from D. unshiuensis in having narrower conidiophores (1.3-1.5 μm vs. 1.4-2.6 μm) ( Huang et al. 2015).
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