Fungalpedia – Note 1040, Arthrocladium

 

Arthrocladium Papendorf

Citation when using this data: Tian Q et al. 2021 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1

Classification:  Trichomeriaceae, Chaetothyriales, Chaetothyriomycetidae, Eurotiomycetes, Pezizomycotina, Ascomycota, Fungi

Biotrophic, saprobic, pathogenic on plant tissue, ant domatium and humans. Sexual morph: Undetermined. Asexual morph: hyphomycetous. Hyphae septate, light smoky brown, Conidiophores terminally, distinct, light brown-olivaceous. Conidia solitary, filamentous with proximal articulate spore-body, septate, tapering to the apex, with tail-like extensions, light brownolvaceous, smooth-walled (Papendorf 1969).

Notes: Papendorf (1969) introduced Arthrocladium Papendorf to accommodate the type species A. caudatum Papendorf from leaf litter of Acacia in South Africa. The genus is characterized by obsolete or distinct, light brown-olivaceous conidiophores and light brownolivaceous conidia with tail-like extensions. Sequencing of the type strain of Arthrocladium caudatum revealed that the genus is related to Knufia within Trichomeriaceae. Nascimento et al. (2016) introduced three non-sporulating species of Arthrocladium, but the conidia description did not agree with those of Papendorf (1969). They described structures as irregular fragmentation of swollen hypha. Due to their nondescript morphology, Arthrocladium species may have been overlooked in ecological studies.

Type species: Arthrocladium caudatum Papendorf, Trans. Br. mycol. Soc. 52(3): 483 (1969)

Other accepted species: Species Fungorum – search Arthrocladium.

 

A collage of microscopic imagesAI-generated content may be incorrect.

 

Figure 1 – Arthrocladium caudatum (PRE 43727, holotype, redrawn from Papendorf 1969). a, d Conidiophores with single and grouped conidia. b, c Lateral conidia showing stipitate and truncate base and septate basal cell. Scale bars: a–d =10 µm.

 

References

Nascimento MMF, Selbmann L, Sharifynia S, Al-Hatmi AM et al. 2016 – Arthrocladium, an unexpected human opportunist in Trichomeriaceae (Chaetothyriales). Fungal Biology 120, 207–218.

Papendorf MC. 1969 – New South African soil fungi. Transactions of the British Mycological Society 52(3), 483–489.

 

Entry by

Qing Tian, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand

 

Published online 16 December 2021

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