Jalapriya apicalivaginatum D.F. Bao, X. Fu, H.Y. Su & Z.L. Luo, 2021

Fu, Xi, Bao, Dan-Feng, Luo, Zong-Long, He, Xiu & Su, Hong-Yan, 2021, Two new species of Jalapriya and a new record, Dictyocheirospora vinaya from freshwater habitats in China, Biodiversity Data Journal 9, pp. 74295-74295 : 74295

Jalapriya apicalivaginatum D.F. Bao, X. Fu, H.Y. Su & Z.L. Luo, 2021 sp. nov.

Materials

Type status: Holotype. Taxon: scientificName: Jalapriya apicalivaginatum; phylum: Ascomycota ; class: Dothideomycetes ; order: Pleosporales ; family: Dictyosporiaceae ; genus: Jalapriya ; Location : locationRemarks: China, Gansu Province, Gannan City , Xiahe County, Sangke Town , on decaying wood submerged in stream, July 2020; Event: habitat: decaying wood submerged in stream; Record Level: collectionID: SK 1-21-1 H; collectionCode: L-78

Description

Saprobic on decaying wood submerged in stream. Asexual morph: Hyphomycetous (Fig. 2 ). Colonies effuse, scattered, dark brown or black. Mycelium mostly immersed, partly superficial, composed of smooth, septate, branched, hyaline to pale brown hyphae. Conidiophores micronematous, reduced, hyaline to pale brown, unbranched, thin-walled, smooth. Conidiogenous cells holoblastic, integrated, terminal. Conidia acrogenous, solitary, cheiroid, pale brown, the shape of conidia like a "U", with 3-5 rows of cells. The rows in the middle are little bit longer than the outer rows and each row of cells with an apical hyaline, inflated, gelatinous subglobose, cap-like appendage, the rows of conidia mostly arranged in a plane and 2 outer rows arising from a basal cell, rows not separating, each row consisting of 6-12 cells, the size of outer rows 15-52 × 3-6 μm (x̄ = 36 × 5 μm, n = 30), excluding apical hyaline gelatinous appendages, the size of inner rows 24-47 × 4-7 μm (x̄ = 40 × 5.5 μm, n = 30). The size of conidia 24-47 × 17-31.5 µm (x̄ = 40 × 23 μm, n = 30). Sexual morph: Undetermined.

Culture characteristics

Conidia germinating on PDA within 24 h, germ tubes arising from the outermost cells of the conidium. Colonies on MEA covering 9 cm diam., in 4 weeks at 28°C. On the obverse, the edges are white and the middle is greyish-white. On the reverse, colonies appear pale yellow. Sporulation not observed in culture.

Material examined

CHINA, Gansu Province, Gannan City, Xiahe County, Sangke Town, 35°8'9"N, 102°27'11"E, on decaying wood submerged in stream, July 2020, Z.L. Luo, SK 1-21-1 H (HKAS 115801, holotype), ex-type living culture, KUNCC 21-10704 = CGMCC 3.20612.

Etymology

Referring to the conidia with an apical mucilaginous sheath.

Notes

In the phylogenetic analysis, J. apicalivaginatum formed a distinct lineage within Jalapriya and close to Jalapriya sp. (19VA07); However, the morphology of Jalapriya sp. (19VA07) was not available, but phylogeny of J. apicalivaginatum and Jalapriya sp. are distinct. Jalapriya apicalivaginatum resembles J. pulchra and J. inflata in having each conidial row of cells with an apical hyaline, inflated, gelatinous subglobose, cap-like appendage. However, Jalapriya inflata is characterised by branched conidiophores, whereas conidiophores of J. apicalivaginatum are not differentiated. Jalapriya apicalivaginatum has fewer number of rows than those of J. pulchra (3-5 rows vs. 5-7 rows) and conidia are smaller than those of J. pulchra (24-47 × 17-31.5 µm vs. 32-46 × 23.5-31.5 μm) ( Boonmee et al. 2016) (Table 2 ).

Figures

Figure 2. Jalapriya Jalapriya apicalivaginatum (HKAS 115801, holotype). a Colonies on submerged wood; b-l Conidia; m Germinating conidium; n-o Culture on PDA from above and reverse. Scale bars: b, f-g, 20 μm; c, 30 μm; d-e, h-m, 15 μm.