Morphological and multigene phylogenetic analyses reveal two new nematode-trapping fungi (Arthrobotrys, Orbiliaceae) from Yunnan, China

YAO-QUAN YANG; FA ZHANG; ZHENG-QIANG LI; FA-PING ZHOU; XIAO-YAN YANG; WEN XIAO

doi:10.11646/phytotaxa.591.4.3

Issue: Vol. 591 No. 4: 11 April 2023

Type: Article

Published: 2023-04-11

DOI: 10.11646/phytotaxa.591.4.3

Page range: 263-272

Abstract views: 155

PDF downloaded: 6

**Morphological and multigene phylogenetic analyses reveal two new nematode-trapping fungi (Arthrobotrys, Orbiliaceae) from Yunnan, China**

YAO-QUAN YANG⁺⁻
FA ZHANG⁺⁻
ZHENG-QIANG LI⁺⁻
FA-PING ZHOU⁺⁻
XIAO-YAN YANG⁺⁻
WEN XIAO⁺⁻

Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali Yunnan 671003, P.R. China. The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region, Dali Yunnan 671003, P.R. China.

Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali Yunnan 671003, P.R. China. The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region, Dali Yunnan 671003, P.R. China. Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali Yunnan 671003, P.R. China.

Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali Yunnan 671003, P.R. China. The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region, Dali Yunnan 671003, P.R. China.

Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali Yunnan 671003, P.R. China. The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region, Dali Yunnan 671003, P.R. China. Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali Yunnan 671003, P.R. China.

Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali Yunnan 671003, P.R. China. The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region, Dali Yunnan 671003, P.R. China. Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali Yunnan 671003, P.R. China. Yunling black-and-white snub-nosed monkey observation and research station of Yunnan province, Dali Yunnan 671003, P.R. China.

2 new species Carnivorous fungi Morphology Phylogeny Fungi

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Abstract

During the investigation of nematode-trapping fungi in Yunnan Province, four strains were isolated from the soil collected in Nujiang City, Yunnan Province, China and were identified as two new Arthrobotrys (Orbiliaceae) species based on morphology and multigene (ITS, EF1-α, and RPB2) phylogenetic analysis. Arthrobotrys gongshanensis is characterized by conidiophores producing 1–5 short denticles near the apex, bearing a single conidium on each denticle and obovoid to fusiform, 1–4-septate conidia. Arthrobotrys luzhangensis is characteristics by its obovoid to fusiform, 1–4-septate macroconidia, and clavate or obovoid, aseptate microconidia. These two new species both capture nematodes using adhesive networks. The multigene phylogenetic analyses further confirmed the taxonomic positions of these two new species within Arthrobotrys. This paper described them with illustrations and compared them with similar taxa.

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