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Mycological Progress

, Volume 18, Issue 1–2, pp 147–161 | Cite as

Cryptic species within Ophiocordyceps myrmecophila complex on formicine ants from Thailand

  • Artit Khonsanit
  • Janet Jennifer Luangsa-ard
  • Donnaya Thanakitpipattana
  • Noppol Kobmoo
  • Onuma PiasaiEmail author
Review

Abstract

The Ophiocordyceps myrmecophila complex is composed of pathogens specific to ants, found on the leaf litter or buried in soil and produce Hymenostilbe asexual morph. Species in this complex are morphologically highly similar and can hardly be distinguished macroscopically. To date, it has only been observed on formicine ants of the genera Polyrhachis and Camponotus. In this study, observations were conducted in three sites at Khao Yai National Park of Thailand where three new species are proposed. Molecular phylogenies based on the large subunit of the ribosomal DNA (LSU), partial sequences of translation elongation factor 1-α (TEF), and the largest and second largest subunits of the RNA polymerase Π (PRB1 and RPB2) revealed distinct clades separating these new species, namely Ophiocordyceps megacuculla, Ophiocordyceps khaoyaiensis, and Ophiocordyceps granospora. The morphological features of these three new species are clearly different from Ophiocordyceps thanathonensis, a recently described species of the complex, but mostly overlap between these three. However, they are proposed as distinct species based on molecular phylogenetic relationships, genetic distance, and minor morphological characters related to sexual structures.

Keywords

Ophiocordycipitaceae Taxonomy Phylogenetic Entomogenous fungi Multigene New species 

Notes

Acknowledgements

The authors would like to express their appreciation to the Graduate School, Kasetsart University, for the Graduate Scholarship for the Fiscal Year 2015 for the first author. We are grateful to the Microbe Interaction and Ecology Laboratory (BMIE), National Center for Genetic Engineering and Biotechnology (BIOTEC), Thailand, for the use of the facilities; the Royal Forest Department of Thailand for the permission to survey and collect fungi in Khao Yai National Park. We would like to thank Dr. Sasithorn Hasin from Valaya Alongkorn Rajabhat University for her help in the identification of the ant hosts.

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Copyright information

© German Mycological Society and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Plant Pathology, Faculty of AgricultureKasetsart UniversityBangkokThailand
  2. 2.Microbe Interaction and Ecology Laboratory (BMIE), BIOTEC, National Science and Technology Development Agency (NSTDA)Khlong LuangThailand

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