Botryosphaeriales » Botryosphaeriaceae » Dothiorella

Dothiorella alpina

Dothiorella alpina

(Y. Zhang ter & Ming Zhang) Phookamsak & Hyde, in Hyde et al., Asian Journal of Mycology 3(1): 168 (2020)

Index Fungorum number: IF55723           Facesoffungi number: FoF07384

= Spencermartinsia alpina Y. Zhang ter & Ming Zhang, Mycosphere 7(7): 1058 (2016)


Sexual morph: Undetermined. Asexual morph: Conidiomata 135–245 µm high, 150–235 µm diameter, pycnidial, immersed, raised, becoming erumpent through host epidermis, gregarious, visible as black, gnarled with dark area on host, globose to subglobose, 1-loculate, occasionally developed hyaline, palisade-like invaginations, raising from basal cavity, ostiole central, with a small, narrow papilla. Pycnidial walls 15–30 µm wide, composed of 3–5 layers, of large, dark brown to black pseudoparenchymatous cells, arranged in textura angularis to textura globulosa. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 7–10 × 2–4(–5) µm (x̄ = 8.9 × 3.6 µm, n = 30), raising from the inner cavity, enteroblastic, phialidic, integrated, determinate, ampulliform to cylindrical, unbranched, aseptate, hyaline, smooth, with minute collarette, with thin periclinal wall thickening. Conidia 22–25(–28) × 10–12(–13) µm (x̄ = 24.4 × 11.1 µm, n = 50), initially hyaline, becoming brown to dark brown when mature, oblong with rounded ends, occasionally irregular in shape, 1-septate, smooth-walled.


Habitat: Saprobic on dead stolon of Ipomoea sp.


Known hosts: Platycladus orientalis (Cupressaceae) (Dissanayake et al. 2016, Zhang et al. 2016), Ipomoea sp. (Hyde et al. 2020).


Known distribution: China, Yunnan (Zhang et al. 2016), China, Yunnan (Hyde et al. 2020).


Material examined: China, Yunnan Province, Kunming City, Kunming Institute of Botany, on dead stolon of Ipomoea sp. (hanging on the tree), 18 October 2016, R. Phookamsak, KIB008 (KUN-HKAS 102212, new host record), living culture, KUMCC 18–0135, KUMCC 18–0136.


GenBank Accession No: ITS: MT002267, LSU: MT002266, SSU: MT002268, RPB2: MT005773 (KUMCC 18–0135); ITS: MT000718, LSU: MT000720, SSU: MT000725, RPB2: MT005774 (KUMCC 18–0136).


Notes: The NCBI BLASTn search of ITS sequence data shows that our strains (KUMCC 18–0135, KUMCC 18–0136) are identical to Spencermartinsia sp. ‘alpina’ strain CGMCC3.18001 and Spencermartinsia sp. JC-2017 strain CFCC 51564 (as Dothiorella magnoliae; You et al. 2017) with 100% similarity. Phylogenetic analyses of a concatenated ITS and TEF1 sequence dataset indicated that our strains have a close affinity with S. alpina (CGMCC3.18001) with strong support (97% ML and 1.00 PP, Fig. 106). Morphological characters and phylogenetic analyses indicated that our collection is conspecific with S. alpina (Zhang et al. 2016). We, therefore, transfer S. alpina to Dothiorella. A new combination, Dothiorella alpina is designated and is reported from Ipomoea sp. in Yunnan, China for the first time.

 Figure  Dothiorella alpina (KUN-HKAS 102212, new combination). a Appearance of conidiomata on host substrate. b Section through conidiomata. c Section through pycnidial wall. d–f Conidiogenous cells with the development of conidia. g–i Conidia. j Germinated conidium. k, l Culture characteristics on PDA (k = from above, l = from below). Scale bars: b = 100 µm, c = 50 µm, d–f, j = 20 µm, g–i = 10 µm.


Reference: Hyde KD, de Silva NI, Jeewon R, Bhat DJ, et al. (2020) AJOM new records and collections of fungi: 1–100. Asain Journal of Mycology 3(1):22–294.



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Thailand Science Research and Innovation (TSRI),

project entitled:

"The future of specialist fungi in a changing climate: baseline data for generalist and specialist fungi associated with ants Rhododendron species and Dracaena species"

(Grant No. DBG6080013)

"Impact of climate change on fungal diversity and biogeography in the Greater Mekong Sub-region"

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  • Chinese Academy of Sciences,
  • Honghe County 654400, Yunnan, China

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