Pleosporales » Dictyosporiaceae » Dictyocheirospora

Dictyocheirospora indica

Dictyocheirospora indica (I.B. Prasher & R.K. Verma) J. Yang & K.D. Hyde

 

Index Fungorum number: IF554774; Facesoffungi number: FoF04680

Basionym: Dictyosporium indicum I.B. Prasher & R.K. Verma, Phytotaxa 204 (3): 194 (2015).

Holotype: INDIA. Himachal Pradesh, Mandi, on petiole of Phoenix rupicola, 19 November 2012, I.B. Prasher and R.K. Verma (PAN 30313).

 

Description from the holotype: (Prasher and Verma 2015)

 

Colonies on the natural substratum conspicuous, black, scattered in the form of compact sporodochia. Sporodochia 130–415 μm in diameter. Conidiophores hyaline, thin-walled, short. Conidia (33–)36–46(–48) ×13–18 μm, cylindrical in lateral view, clavate, cheiroid in ventral view, smooth-walled, consisting of a subhyaline, cubical truncate basal cell 5–7 μm in diameter, on which 6–7 discrete, vertical rows of cells are inserted in different plane; rows of cells tightly appressed together as a cylinder and separate only under pressure; each row contains 8–10 cells; each arm is 4–7 μm wide,7–9(–10) septate and terminates in an incurved hook, cells in each row range from 3–6 × 4–7 μm. Conidia bear 1–2, hyaline, thin-walled, aseptate, subapical appendages, 5–13 × 5–7 μm.

 

Notes: Collection MFLU 15-1169 was identified as Dictyocheirospora indica (Dictyosporium indicum) based on morphological examination. Phylogenetic analyses indicated the placement of this taxon within Dictyocheirospora and sister to Di. subramanianii (BCC 3503). Dictyocheirospora subramanianii differs from Di. indica in lacking appendages. Dictyocheirospora indica resembles Di. musae in having non-complanate, cylindrical conidia with globose to subglobose appendages. However, conidial appendages of Di. indica are attached at the subapical cells, while appendages of Di. musae are attached at the central cells of the outer cell-row. The conidial size of Di. indica (33–48 × 13–18 µm) is smaller than that of Di. musae (45–65 × 20–27 µm) (Photita et al. 2002, Prasher and Verma 2015). In this study, sequence data of our collection Dictyocheirospora indica (MFLUCC 15-0056) was generated and, as there is no sequence data available for the previous collection (Dictyosporium indicum), we therefore designated our collection as the reference specimen (sensu Ariyawansa et al. 2014) for Dictyocheirospora indica.

 

Freshwater distribution: Thailand (Yang et al. 2018)

 

References

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

Prasher IB, Verma RK (2015) Two new species of Dictyosporium from India. Phytotaxa 204: 193–202. https://doi.org/10.11646/phytotaxa.204.3.2

Photita W, Lumyong P, McKenzie EHC, Hyde KD, Lumyong S (2002) A new Dictyosporium species from Musa acuminata in ThailandMycotaxon 82: 415–419.

Ariyawansa HA, Hawksworth DL, Hyde KD, Jones EBG et al. (2014) Epitypification and neotypification: guidelines with appropriate and inappropriate examplesFungal Diversity 69: 57–91. https://doi.org/10.1007/s13225-014-0315-4