Arthrobotrys xiangyunensis S.R. Liu, H.Y. Su & X.Y. Yang, 2014

Liu, Shuoran, Su, Hongyan, Su, Xijun, Zhang, Fa, Liao, Guanghui & Yang, Xiaoyan, 2014, Arthrobotrys xiangyunensis, a novel nematode-trapping taxon from a hot-spring in Yunnan Province, China, Phytotaxa 174 (2), pp. 89-96 : 90

Arthrobotrys xiangyunensis S.R. Liu, H.Y. Su & X.Y. Yang , sp. nov. ( Fig. 1 )

This species is similar to Monacrosporium guizhouense , M. longiphorum , M. spheroids , M. eudermatum and Arthrobotrys mangrovispora , but differs because the conidia shape, size and number of septa are distinguishable ( Table 1).

MycoBank: MB 804252

Etymology: The species Arthrobotrys xiangyunensis was named after Xiangyun County, Dali, Yunnan Province, China, where the type strain was isolated.

Colonies growing slowly on CMA medium, attaining 1.6cm diam at 27 °C within 7 days and not growing at 10 °C or 45 °C. Colonies colorless and viliform at the edge. Mycelium spreading, scanty, hyaline, septate, branched and 1–5μm wide. Conidiophores hyaline, erect, simple and septate, usually 65–235μm high, 1.5–9μm in wide at the base and 1–6μm wide at the apex, producing single conidia. Conidia 27–72(55.8) × 14.5–28.5(21.9)μm, colorless, variable in shape, obpyriform, broadly turbinate, fusiform to elongate-fusoid, clavate, 1–5-septate, proportions of 1,2,3,4 or 5 septa are 5.3%, 8.6%, 28.5%, 53% and 4.6%, respectively. Chlamydospores spherical or oval. Three-dimensional adhesive networks produced to trap nematodes.

Holotype: China, Yunnan Province, Dali, Xiangyun County, Dabona hot-spring, 1983m alt., 18 January 2013, soil isolate taken by F. Zhang (YXY10-1), deposited in Faculty of Agriculture and Biology, Dali University, China; extype culture= DLU10-1.

Figures

FIGURE 1. Arthrobotrys xiangyunensis (holotype). A–C. Conidiophores. D. Chlamydospores. E–H, J–N. Mature conidia. I. Adhesive network. Bars = 10μm.