Zasmidium liboense Y.Y. An, Yong Wang bis & K.D. Hyde, 2021

An, Yuan-Yan, Zeng, Xiang-Yu, Geng, Kun, Hyde, Kevin David & Wang, Yong, 2021, One new species and one new record of Zasmidium in China, Biodiversity Data Journal 9, pp. 59001-59001 : 59001

Zasmidium liboense Y.Y. An, Yong Wang bis & K.D. Hyde sp. nov.

Materials

Type status: Holotype. Occurrence: catalogNumber: HGUP 1720.2 ; recordedBy: Wang Yong; Taxon: scientificName: Zasmidiumliboense; kingdom: Fungi; class: Dothideomycetes; order: Capnodiales; family: Mycosphaerellaceae; genus: Zasmidium; Location: country: China; stateProvince: Guizhou; locality: Gold Thread Cave of Libo county ; Identification: identifiedBy: Yuan-Yan An; dateIdentified: 2020; Record Level: type: ex-type cultures GUCC 1070.2; MFLUCC 20-0139; language: en

Description

Pathogenic on the leaf spot of Smilax china ( Liliales , Smilacaceae ). Lesions on the upper leaf surface, scattered, distinct, irregular, rather large, the maximum length of the spot more than 20 mm, the edges of the disease reddish-brown, the centre dead to greyish-white, on the lower leaf surface similar. Colonies on PDA 10-15 mm diam. in 2 weeks, with an even, dark coffee margin. Mycelium composed of hyaline and pale brown to dark blackish-brown hyphae, verruculose, septate, branching, uniform in width, 2.5 μm. Conidiophores arising from hyphae, pale olivaceous brown to pale blackish-brown, finely verruculose, straight or slightly curved, dendritic rugged or rugose on the surface 20-350 × 1.5-3.5 μm. Conidiogenous cells integrated, apical, polyblastic, proliferating sympodially, with rim-like conidiogenous loci, thickened and darkened, located apically and lateraly as in a short rachis 1.5-2.5 μm diam. Conidia solitary, occasionally catenate, pale blackish-brown to pale olivaceous brown, verruculose, ellipsoidal, cylindrical to obclavate, base obconically truncate and apex rounded, straight or curved, 6-21 × 2-4 μm, 0-1-septate, sometimes constricted at septa, with hila thickened and darkened, 1-1.5 μm diam. (Fig. 1 )

MycoBank Number

MB836278

Etymology

In reference to the location (Libo county, Guizhou Province), where the holotype was isolated.

Figures

Figure 1. Zasmidium liboense (GUCC 1720.2). a. Leaf spot symptoms on the host; b. Culture on PDA; c, d. hyphae and conidiophores on PDA; e-m. Conidiophores and conidia; n, o. Conidiogenous cells and conidia; p. Conidia. Scale bars: c, d = 50 µm, e-j = 10 µm, k = 5 µm, l-p = 10 µm.