Fungalpedia – Note 2472, Tetraploa
Tetraploa Berk. & Broome
Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Tetraplosphaeriaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Tetraploa was reinstated, suppressing Tetraplosphaeria Kaz. Tanaka & K. Hiray. by Hyde et al. (2013). Hyde et al. (2020b) doubted that Dwibahubeeja N. Srivast. et al. was a synonym of Tetraploa because of the similarities of T. dwibahubeeja Rajeshkumar et al. and D. indica N. Srivast. et al. (type). However, this cannot be resolved until sequence data of D. indica is available.
Tetraploa is similar to other genera in Tetraplosphaeriaceae in having conidia with several setose appendages, but differs by its globose ascomata, narrowly fusiform ascospores surrounded by a narrow mucilaginous appendage-like sheath and cylindrical, euseptate conidia with setose appendages (Hyde et al. 2013).
The freshwater species T. scheueri Kaz. Tanaka & K. Hiray. was proposed by Hyde et al. (2013) to replace Tetraplosphaeria tetraploa (Scheuer) Kaz. Tanaka & K. Hiray. The asexual morph of T. scheueri was reported as T. aristata Berk. & Broome based on cultural methods (Scheuer 1991). However, Tanaka et al. (2009) considered T. aristata to be a species-complex composed of phylogenetically diverse lineages. Thus, the identification of T. aristata should be re-evaluated (Tanaka et al. 2009). In our phylogenetic analysis, two putative strains T. aristata (CBS 996.70) and T. scheueri (CY112) cluster together and there are two nucleotide differences in ITS sequence data, which probably supports the conclusion of Scheuer (1991). However, the real identities of two strains are unknown because their morphology are unavailable (Tanaka et al. 2009; Rodrigues et al. 2011).
Type species: Tetraploa aristata Berk. & Broome.
Other accepted species: Species Fungorum – search Tetraploa.
Figure 1 – Tetraploa puzheheiensis (MFLU 20-0441, holotype). a, b Colonies on natural substrate. c–j Conidia. k Germinated conidium. l, m Colony on PDA (up-front, down-reverse). Scale bars: c–k = 10 μm.
References
Entry by
Wei Dong, Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China
Published online 15 May 2026