Pleosporales » Pseudocoleodictyosporaceae » Subglobosporium

Subglobosporium tectonae

Subglobosporium tectonae Doilom & K.D. Hyde, in Doilom et al., Fungal Diversity: 10.1007/s13225-016-0368-7, [33] (2016)

Index Fungorum number: IF551971            Facesoffungi number: FoF01862


Sexual morph: Undetermined. Asexual morph: Colonies on natural substrate, punctiform, superficial on outer and inner bark, in pits or cracks on outer bark, gregarious, scattered, black, globose to subglobose. Conidiophores undetermined. Conidiogenous cells undetermined. Conidia (78–)87– 94(−101) high × (62–)80–85(−98) μm (x̄ = 88×80μm, n =20), globose or subglobose to ellipsoidal, 1-celled, black, becoming reddish when crushed, containing hyaline granular contents. Culture characteristics: Conidia germinating on PDAwithin 24 h. Germ tubes produced around conidia. Colonies on MEA reaching 11–13 and 13–17mmdiam. after 7 and 10 days respectively in the dark at 25 °C (x̄ = 12.5, 15.4 mm for 7 and 10 days respectively, n = 5), undulate, flat or effuse in the center, immersed at the edge, superficial on old colony plugs at the center, slowly growing, after 10 days, pastel grey (1D1) from above, yellowish brown (5F6) from below. 


Habitat: Known to inhabit bark of dead and living T. grandis.


Known distribution: Thailand.


Material examined: Thailand, Chiang Rai Province, Muang District, Ban Doo Subdistrict, on dead bark of T. grandis, 15 July 2012, M. Doilom & S. Luesuwan, (MFLU 15–3560, holotype), ex-type living culture MFLUCC 12– 0393, MKT 066, ICMP, GenBank Accession No: ITS: KU712445, LSU: KU764703, RPB2: KU712485, SSU: KU712464; Chiang Rai Province,Mae Chan District, on bark of living T. grandis, 1 July 2012, M. Doilom, (MFLU 15– 3529, paratype), ex-paratype living culture MFLUCC 12– 0390, MKT 063, ICMP, GenBank Accession No: ITS: KU712446, LSU: KU764702, RPB2: KU712495, SSU: KU712463.


Notes: Subglobosporium is introduced as a new genus in Pseudocoleodictyosporaceae with Su. tectonae as the type species. The characteristics of Subglobosporium are conidia in punctiform, superficial colonies in pits or cracks on bark, black, globose to subglobose on natural substrates. It is proposed that Subglobosporium has a unique morphology compared to other hyphomycetes (Seifert et al. 2011). This genus forms a distinct lineage from other taxa in Dothideomycetes based on LSU sequence data which was obtained from Hyde et al. (2013), aswell as multi-gene.


Figure X. Subglobosporium tectonae (MFLU 15–3560, holotype). a Conidia on outer bark of living T. grandis. b Conidia on dead innersurface of bark. c–f Conidia. g Close-up of conidia wall. h Crushed conidium. i Germinated conidium. j Colony on PDA after 10 days (above and below views). k Colony on MEA after 10 days (above and below views). Scale bars: a, b = 200μm, c = 50μm, d–f, i = 30μm, g, h = 20μm.


Reference: Doilom M, Dissanayake AJ, Wanasinghe DN, Boonmee S, et al. (2016) Microfungi on Tectona grandis (teak) in northern Thailand. Fungal Diversity 82:107–182.


About GMS Microfungi

The webpage provides an account of GMS microfungi.


Supported by 

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"

(Grant No. RDG6130001)


  • Email:
  • Addresses:
    1 Center of Excellence in Fungal Research
  • Mae Fah Luang University Chiang Rai
    57100 Thailand
  • 2 Kunming Institute of Botany
  • Chinese Academy of Sciences,
  • Honghe County 654400, Yunnan, China

Published by the Mushroom Research Foundation 
Copyright © The copyright belongs to the Mushroom Research Foundation. All Rights Reserved.