Dictyocheirospora
Dictyocheirospora M.J. D’souza, Boonmee & K.D. Hyde, Fungal Diversity 80: 465 (2016)
Saprobic on decaying wood in freshwater and terrestrial habitats. Sexual morph: Undetermined. Asexual morph: Hyphomycetous. Conidiomata on natural substrate sporodochial, punctiform, dark brown. Mycelium immersed, consisting of branched, septate, subhyaline to pale brown hyphae. Conidiophores micronematous or semi-macronematous, septate, hyaline to pale brown, smooth. Conidiogenous cells holoblastic, integrated, terminal, determinate, doliiform to cylindrical. Conidia acrogenous, solitary, dry, cheiroid, pale brown, complanate or non-complanate, euseptate or distoseptate, smooth-walled (Boonmee et al. 2016).
Type species: Dictyocheirospora rotunda M.J. D’souza, Bhat & K.D. Hyde
Notes: Dictyocheirospora was introduced for the species producing dark sporodochial colonies with aeroaquatic cheiroid dictyospores (Boonmee et al. 2016). Many new species and combinations were reported in the genus (Yang et al. 2018), and 21 species are listed in Index Fungorum (2020). Nine of them are from freshwater habitats, mostly in China and Thailand.
List of freshwater Dictyocheirospora species
*Dictyocheirospora aquadulcis Sorvongxay, S. Boonmee & K.D Hyde, Fungal Diversity 96: 23 (2019)
Freshwater distribution: Thailand (Hyde et al. 2019)
*Dictyocheirospora aquatica Z.L. Luo, Bhat & K.D. Hyde, Mycosphere 7(9): 1361 (2017)
Freshwater distribution: China (Wang et al. 2016)
*Dictyocheirospora garethjonesii Z.L. Luo, H.Y. Su & K.D. Hyde, Mycosphere 7(9): 1361 (2017)
Freshwater distribution: China (Wang et al. 2016)
*Dictyocheirospora gigantica (Goh & K.D. Hyde) M.J. D’souza, Boonmee & K.D. Hyde, Fungal Diversity 80: 469 (2016)
Freshwater distribution: Thailand (Goh et al. 1999)
*Dictyocheirospora indica (I.B. Prasher & R.K. Verma) J. Yang & K.D. Hyde, MycoKeys 36: 90 (2018)
Freshwater distribution: Thailand (Yang et al. 2018)
*Dictyocheirospora rotunda M.J. D’souza, Bhat & K.D. Hyde, Fungal Diversity 80: 465 (2016)
Freshwater distribution: China (Wang et al. 2016; this study), Thailand (Boonmee et al. 2016)
*Dictyocheirospora tetraploides (L. Cai & K.D. Hyde) J. Yang & K.D. Hyde, MycoKeys 36: 93 (2018)
Freshwater distribution: China (Cai et al. 2003)
*Dictyocheirospora thailandica X.D. Yu, W. Dong & H. Zhang
Freshwater distribution: Dong et al. (2020)
*Dictyocheirospora vinaya M.J. D’souza, Bhat & K.D. Hyde, Fungal Diversity 80: 467 (2016)
Freshwater distribution: Thailand (Boonmee et al. 2016)
Key to freshwater Dictyocheirospora species
1. Conidia with appendage...................................... 2
1. Conidia without appendages............................... 3
2. Conidial appendage 5–13 × 5–7 μm..................... D. indica
2. Conidial appendage 10–25 × 5–10 μm.................. D. tetraploides
3. Conidial rows closely compacted, become divergent when squashed......... 4
3. Conidial rows not as above................................. 5
4. Conidia 58–67 × 15.5–26.5 μm............................ D. vinaya
4. Conidia 42–65 × 20–45 µm.................................. D. thailandica
5. Conidial rows composed of > 20 cells................ D. gigantica
5. Conidial rows composed of < 20 cells................ 6
6. Conidia > 60 μm long.......................................... D. aquadulcis
6. Conidia < 60 μm long.......................................... 7
7. Conidial arm composed of up to 12 cells.............. D. rotunda
7. Conidial arm composed of 7–10 cells................... 8
8. Conidia 34–42 × 12.5–19.5 μm............................ D. aquatica
8. Conidia 45.5–54.5 × 15.5–24.5 μm........................ D. garethjonesii
References
Boonmee, S., D’souza, M.J., Luo, Z. et al. Dictyosporiaceae fam. nov. Fungal Diversity 80, 457–482 (2016). https://doi.org/10.1007/s13225-016-0363-z
Cai L, Zhang KQ, McKenzie EHC, Hyde KD (2003) New species of Dictyosporium and Digitodesmium from submerged wood in Yunnan, China. Sydowia 55:129–135
Dong W, Wang B, Hyde KD, McKenzie EHC, Raja HA, Tanaka K, Abdel-Wahab MA, Abdel-Aziz FA, Doilom M, Phookamsak R, Hongsanan S, Wanasinghe DN, Yu X-D, Wang G-N, Yang H, Yang J, Thambugala KM, Tian Q, Luo Z-L, Yang J-B, Miller AN, Fournier J, Boonmee S, Hu D-M, Nalumpang S, Zhang H (2020) Freshwater Dothideomycetes. Fungal Divers 105:319–575
Goh TK, Hyde KD, Ho WH, Yanna (1999) A revision of the genus Dictyosporium, with descriptions of three new species. Fungal Divers 2:65–100
Hyde KD, Tennakoon DS, Jeewon R, Bhat DJ, Maharachchikumbura SSN, Rossi W, Leonardi M, Lee HB, Mun HY, Houbraken J, Nguyen TTT, Jeon SJ, Frisvad JC, Wanasinghe DN, Lücking R, Aptroot A, Cáceres MES, Karunarathna SC, Hongsanan S, Phookamsak R, de Silva NI, Thambugala KM, Jayawardena RS, Senanayake IC, Boonmee S, Chen J, Luo ZL, Phukhamsakda C, Pereira OL, Abreu VP, Rosado AWC, Bart B, Randrianjohany E, Hofstetter V, Gibertoni TB, Soares AMdS, Plautz HL, Sotão HMP, Xavier WKS, Bezerra JDP, de Oliveira TGL, de Souza-Motta CM, Magalhães OMC, Bundhun D, Harishchandra D, Manawasinghe IS, Dong W, Zhang SN, Bao DF, Samarakoon MC, Pem D, Karunarathna A, Lin CG, Yang J, Perera RH, Kumar V, Huang SK, Dayarathne MC, Ekanayaka AH, Jayasiri SC, Xiao Y, Konta S, Niskanen T, Liimatainen K, Dai YC, Ji XH, Tian XM, Mešić A, Singh SK, Phutthacharoen K, Cai L, Sorvongxay T, Thiyagaraja V, Norphanphoun C, Chaiwan N, Lu YZ, Jiang HB, Zhang JF, Abeywickrama PD, Aluthmuhandiram JVS, Brahmanage RS, Zeng M, Chethana T, Wei D, Réblová M, Fournier J, Nekvindová J, do Nascimento Barbosa R, dos Santos JEF, de Oliveira NT, Li GJ, Ertz D, Shang QJ, Phillips AJL, Kuo CH, Camporesi E, Bulgakov TS, Lumyong S, Jones EBG, Chomnunti P, Gentekaki E, Bungartz F, Zeng XY, Fryar S, Tkalčec Z, Liang J, Li G, Wen TC, Singh PN, Gafforov Y, Promputtha I, Yasanthika E, Goonasekara ID, Zhao RL, Zhao Q, Kirk PM, Liu JK, Yan J, Mortimer PE, Xu J, Doilom M (2019) Fungal diversity notes 1036–1150: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Divers 96:1–242
Wang RX, Luo ZL, Hyde KD, Bhat DJ, Su XJ, Su HY (2016) New species and records of Dictyocheirospora from submerged wood in north-western Yunnan, China. Mycosphere 7:1357–1367
Yang J, Liu JK, Hyde KD, Jones EBG, Liu ZY (2018) New species in Dictyosporium, new combinations in Dictyocheirospora and an updated backbone tree for Dictyosporiaceae. Mycokeys 36:83–105
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