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Trichomeriaceae, a new sooty mould family of Chaetothyriales

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Abstract

Trichomerium is a genus of foliar epiphytes with the appearance of sooty moulds, mostly occurring on the surface of living leaves and apparently gaining their nutrients from insect exudates. Species have ascostromata with setae and develop on a loosely interwoven mycelial mass of dark brown hyphae, while asci have a bitunicate appearance with hyaline ascospores. In this study, we made 16 collections of Trichomerium from Thailand. All were isolated, and the LSU and ITS rDNA gene regions sequenced. Phylogenetic analysis indicated that the Trichomerium species form a monophyletic clade within Chaetothyriales and warrant the introduction of a new family Trichomeriaceae. Bootstrap support for the Chaetothyriales is 100 % and clearly separates Trichomeriaceae from Capnodiales which are morphologically very similar. A detailed account of Trichomerium is provided and we describe and illustrate three new species based on morphological and molecular data. We propose that T. foliicola is adopted as the generic type of Trichomerium because it has been impossible to obtain the holotype specimen of T. coffeicola and also no molecular data exists in worldwide databases for this species or genus.

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Acknowledgments

This work was supported by the Thailand Research Fund BRG528002. Roger Fagner Ribeiro Melo is kindly thanked for examining material from URM. We thank the International Fungal Research & Development Center, IFRD Research Institute of Resource Insects and Mycological Department of Chinese Academic of Science for supporting the molecular work. Eric McKenzie is thanked for improving the manuscript.

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Authors and Affiliations

  1. International Fungal Research and Development Centre, The Research Institute of Resource Insects, Chinese Academy of Forestry, Bailongsi, Kunming, Yunnan, People’s Republic of China, 650224

    Putarak Chomnunti & Kevin D. Hyde

  2. Institute of Excellence in Fungal Research, School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand

    Putarak Chomnunti, D. J. Bhat, Ekachai Chukeatirote & Kevin D. Hyde

  3. School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand

    Putarak Chomnunti, Ekachai Chukeatirote & Kevin D. Hyde

  4. Institute of Ocean and Earth Sciences (IOES), C308, Institute of Postgraduate Studies Building, University of Malaya, 50603, Kuala Lumpur, Malaysia

    E. B. Gareth Jones

  5. College of Science, Botany and Microbiology Department, King Saud University, Riyadh, 1145, Saudi Arabia

    Ali H. Bahkali

Authors
  1. Putarak Chomnunti
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  2. D. J. Bhat
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  3. E. B. Gareth Jones
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  4. Ekachai Chukeatirote
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  5. Ali H. Bahkali
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  6. Kevin D. Hyde
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Correspondence to Kevin D. Hyde.

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Chomnunti, P., Bhat, D.J., Jones, E.B.G. et al. Trichomeriaceae, a new sooty mould family of Chaetothyriales. Fungal Diversity 56, 63–76 (2012). https://doi.org/10.1007/s13225-012-0197-2

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  • DOI: https://doi.org/10.1007/s13225-012-0197-2

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