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Arthrobotrys xiangyunensis, a novel nematode-trapping taxon from a hot-spring in Yunnan Province, China

Shuoran Liu, Hongyan Su, Xijun Su, Fa Zhang, Guanghui Liao, Xiaoyan Yang


An Arthrobotrys species with adhesive nets (trapping device) was isolated from hot-spring waterlogged soil during research on evolutionary patterns of nematode-trapping fungi in Yunnan Province, China. Morphological and phylogenetic analyses indicate this is a novel predatory species of Arthrobotrys, which we herein introduce as A. xiangyunensis. The new species is characterized by occasionally branched conidiophores, colorless, fusiform to oval or clavate conidia which mostly have 1–5 septa and measure 27–72(55.8) × 14.5–28.5(21.9) μm. The new species is introduced with illustrations in this paper. Its morphology is rather similar to Monacrosporium guizhouense, M. longiphorum, M. sphaeroides, M. eudermatum and Arthrobotrys mangrovispora, but the phylogenetic analysis shows that A. xiangyunensis and its morphological relatives are distinct.


Nematode-trapping fungi, Arthrobotrys, novel species, phylogeny

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Barns, S.M., Fundyga, R.E., Jeffries, M.W., & Pace, N.R. (1994) Remarkable archaeal diversity detected in a Yellowstone National Park hot spring environment. Proceedings of the National Academy of Sciences 91(5): 1609–1613.

Castaner, D. (1968) A Conidiobolus-like fungus destroying nematodes in Iowa. Mycologia 60(2): 440–443.

Cooke, R.C., & Dickinson, C.H. (1965) Nematode-trapping species of Dactylella and Monacrosporium. Transactions of the British Mycological Society 48(4): 621–629.

Corda, A.K.J. (1839) Pracht-flora europaeischer Schimmelbildungen.

Drechsler, C. (1937) Some hyphomycetes that prey on free-living terricolous nematodes. Mycologia 29(4): 447–552.

Glass, N.L., & Donaldson, G.C. (1995) Development of primer sets designed for use with the PCR to amplify conserved genes from filamentous ascomycetes. Applied and Environmental Microbiology 61(4): 1323–1330.

Grove, W. B. (1884). New or noteworthy fungi. J. Bot 22: 195–201.

Hagedorn, G., & Scholler, E. (1999) A reevaluation of predatory orbiliaceous fungi. I. Phylogenetic analysis using rDNA sequence data. Sydowia 51(1): 27–+.

Hu, W., Li, Y., Mo, M., & Zhang, K. (2006) A new nematode-trapping hyphomycete of Arthrobotrys. Mycotaxon 95: 181–184.

Jeewon, R., Liew, E.C., & Hyde, K.D. (2002) Phylogenetic relationships of Pestalotiopsis and allied genera inferred from ribosomal DNA sequences and morphological characters. Molecular Phylogenetics and Evolution 25(3): 378–392.

Li, Y., Hyde, K.D., Jeewon, R., Cai, L., Vijaykrishna, D. & Zhang, K. (2005) Phylogenetics and evolution of nematode-trapping fungi (Orbiliales) estimated from nuclear and protein coding genes. Mycologia 97(5): 1034–1046.

Liu, X.Z., & Zhang, K.Q. (1994). Nematode-trapping species of Monacrosporium with special reference to two new species. Mycological Research 98(8): 862–868.

Mo, M., Huang, X., Zhou, W., Huang, Y., Hao, Y.E., & Zhang, K. (2005) Arthrobotrys yunnanensis sp. nov., the fourth anamorph of Orbilia auricolor. Fungal Diversity 18: 107–115.

MUSCLE, EBI (2013) Multiple Sequence Comparison by Log-Expectation, European Bioinformatics Institute web server. Available from: (accessed: 30 December 2013).

NCBI (2013) National Center for Biotechnology Information. Available from: (accessed: 30 December 2013).

Odum, E.P. (1971) Fundamentals of Ecology, 3rd edn (Philadelphia, PA, WB Saunders).

Papke, R.T., Ramsing, N.B., Bateson, M.M., & Ward, D.M. (2003) Geographical isolation in hot spring cyanobacteria. Environmental Microbiology 5(8): 650–659.

Qiao, M., Zhang, Y., Li, S.F., Baral, H.O., Weber, E., Su, H.Y., Xu, J.P., Zhang, K.Q. & Yu, Z.F. (2012) Orbilia blumenaviensis and its Arthrobotrys anamorph. Mycological Progress 11(1): 255–262.

Rambaut, A., & Drummond, A. (2010) FigTree v1. 3.1. Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, United Kingdom 2010.

Rothschild, L.J., & Mancinelli, R.L. (2001) Life in extreme environments. Nature 409(6823): 1092–1101.

Schenck, S., Kendrick, W.B., & Pramer, D. (1977) A new nematode-trapping hyphomycete and a reevaluation of Dactylaria and Arthrobotrys. Canadian Journal of Botany 55(8): 977–985.

Scholler, M., Hagedorn, G., & Rubner, A. (1999). A reevaluation of predatory orbiliaceous fungi. II. A new generic concept. Sydowia 51(1): 89–113.

Subramanian, C.V. (1963) Dactylella, Monacrosporium and Dactylina. Journal of the Indian Botanical Society 42: 291–300.

Swe, A., Jeewon, R., Pointing, S.B., & Hyde, K.D. (2008) Taxonomy and molecular phylogeny of Arthrobotrys mangrovispora, a new marine nematode-trapping fungal species. Botanica Marina 51(4): 331–338.

Swe, A., Li, J., Zhang, K.Q., Pointing, S.B., Jeewon, R., & Hyde, K.D. (2011) Nematode-Trapping Fungi. Current Research in Environmental & Applied Mycology 1(1): 1–26.

Tamura, K., Stecher, G., Peterson, D., Filipski, A., & Kumar, S. (2013) MEGA6: Molecular Evolutionary Genetics Analysis Version 6.0. Molecular biology and evolution 30(12): 2725–2729.

Wang, M., Yang, J., & Zhang, K.Q. (2006). Characterization of an extracellular protease and its cDNA from the nematode-trapping fungus Monacrosporium microscaphoides. Canadian journal of microbiology 52(2): 130–139.

White, T.J., Bruns, T., Lee, S., & Taylor, J. (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. PCR protocols: a guide to methods and applications 18, 315–322.

Yang, E., Xu, L., Yang, Y., Zhang, X., Xiang, M., Wang, C., An, Z. & Liu, X. (2012) Origin and evolution of carnivorism in the Ascomycota (fungi). Proceedings of the National Academy of Sciences 109(27): 10960–10965.

Yang, Y., Yang, E., An, Z., & Liu, X. (2007) Evolution of nematode-trapping cells of predatory fungi of the Orbiliaceae based on evidence from rRNA-encoding DNA and multiprotein sequences. Proceedings of the National Academy of Sciences 104(20): 8379–8384.

Yang, Y., & Liu, X. (2006) New generic approach to the taxonomy of predatory anamorphic Orbiliaceae (Ascomycotina). Mycotaxon 97: 153–161.

Zhang, K.Q., Liu, X.Z., & Cao, L. (1996) Nematophagous species of Monacrosporium from China. Mycological Research 100(3): 274–276.

Zopf, W.F. (1888) Zur Kenntniss der Infections-Krankheiten niederer Thiere und Pflanzen. E. Blochmann.


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