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Hourangia, a new genus of Boletaceae to accommodate Xerocomus cheoi and its allied species

Abstract

Hourangia, a new genus in the Boletaceae, is erected to accommodate Xerocomus cheoi and allied species based on molecular phylogenetic analyses and morphological study. This genus can easily be distinguished from other genera of Boletaceae by the combination of the context of the stipe becoming first bluish, then reddish to brownish red, and finally brownish to blackish when cut, the thick hymenophore being 3–5 (7) times that of the pileal context, and the basidiospore surface with bacillate ornamentation. The phylogenetic analyses based on five gene markers (ITS, nrLSU, tef1-α, rpb1 and rpb2) recognized five distinct taxa. Four of them are treated here, with one undescribed due to lack of adequate material. A key to the four species of Hourangia is provided. Xerocomus punctilifer is treated as a synonym of H. cheoi according to the macro-morphological and micro-morphological comparative study. Epitypes are designated for H. cheoi, H. microcarpa and H. nigropunctata. Phylloporus pumilus, originally described from Indonesia, is transferred to Hourangia.

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References

  1. Bi ZS, Lu DJ, Zheng GY (1982) Basidiomycetes from Dinghu Mountain of China. II. Some species of Boletaceae (1). Acta Bot Yunnanica 4:55–64

    Google Scholar 

  2. Binder M, Bresinsky A (2002) Retiboletus, a new genus for a species complex in the Boletaceae producing retipolides. Feddes Repertorium 113:30–40

    Article  Google Scholar 

  3. Chiu WF (1948) The boletes of Yunnan. Mycologia 40:199–231

    Article  Google Scholar 

  4. Chiu WF (1957) Atlas of the Yunnan Bolets. Science Press, Beijing

    Google Scholar 

  5. Corner E (1972) Boletus in Malaysia. Botanic Gardens, Singapore

  6. Desjardin DE, Wilson AW, Binder M (2008) Durianella, a new gasteroid genus of boletes from Malaysia. Mycologia 100:956–961

    PubMed  Article  Google Scholar 

  7. Desjardin DE, Binder M, Roekring S, Flegel T (2009) Spongiforma, a new genus of gastroid boletes from Thailand. Fungal Divers 37:1–8

    Google Scholar 

  8. Doyle JJ, Doyle JL (1987) A rapid DNA isolation procedure for small quantities of fresh leaf tissue. Phytochemical Bull 19:11–15

    Google Scholar 

  9. Edgar RC (2004) MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Res 32:1792–1797

    CAS  PubMed Central  PubMed  Article  Google Scholar 

  10. Hall TA (1999) BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. Nucleic Acids Symp Ser 41:95–98

    CAS  Google Scholar 

  11. Halling RE, Baroni TJ, Binder M (2007) A new genus of Boletaceae from eastern North America. Mycologia 99:310–316

    CAS  PubMed  Article  Google Scholar 

  12. Halling RE, Nuhn M, Fechner NA, Osmundson TW, Soytong K, Arora D, Hibbett DS, Binder M (2012) Sutorius: a new genus for Boletus eximius. Mycologia 104:951–961

    PubMed  Article  Google Scholar 

  13. Hibbett DS, Ohman A, Glotzer D, Nuhn M, Kirk P, Nilsson RH (2011) Progress in molecular and morphological taxon discovery in Fungi and options for formal classification of environmental sequences. Fungal Biol Rev 25:38–47

    Article  Google Scholar 

  14. Hongo T (1963) Notes on Japanese larger fungi (16). J Jpn Bot 38:233–240

    Google Scholar 

  15. Hongo T (1966) Notes on Japanese larger fungi (18). J Jpn Bot 41:165–172

    Google Scholar 

  16. Hosen MI, Feng B, Wu G, Zhu XT, Li YC, Yang ZL (2013) Borofutus, a new genus of Boletaceae from tropical Asia: phylogeny, morphology and taxonomy. Fungal Divers 58:215–226

    Article  Google Scholar 

  17. Lebel T, Orihara T, Maekawa N (2012) The sequestrate genus Rosbeeva T. Lebel & Orihara gen. nov. (Boletaceae) from Australasia and Japan: new species and new combinations. Fungal Divers 52:1–23

    Article  Google Scholar 

  18. Li YC, Feng B, Yang ZL (2011) Zangia, a new genus of Boletaceae supported by molecular and morphological evidence. Fungal Divers 49:125–143

    Article  Google Scholar 

  19. Li YC, Li F, Zeng NK, Cui YY, Yang ZL (2014) A new genus Pseudoaustroboletus (Boletaceae, Boletales) from Asia as inferred from molecular and morphological data. Mycol Prog 13:1207–1216

  20. Neves MA, Binder M, Halling R, Hibbett D, Soytong K (2012) The phylogeny of selected Phylloporus species, inferred from NUC-LSU and ITS sequences, and descriptions of new species from the Old World. Fungal Divers 55:109–123

    Article  Google Scholar 

  21. Nylander J (2004) MrModeltest 2.3. Computer program and documentation distributed by the author. Evolutionary Biology Centre, Uppsala University, Uppsala

  22. Orihara T, Sawada F, Ikeda S, Yamato M, Tanaka C, Shinomura N, Hashiya M, Iwase K (2010) Taxonomic reconsideration of a sequestrate fungus, Octaviania columellifera, with the proposal of a new genus, Heliogaster, and its phylogenetic relationships in the Boletales. Mycologia 102:108–121

    CAS  PubMed  Article  Google Scholar 

  23. Ronquist F, Huelsenbeck JP (2003) MrBayes 3: Bayesian phylogenetic inference under mixed models. Bioinformatics 19:1572–1574

    CAS  PubMed  Article  Google Scholar 

  24. Smith AH, Thiers HD (1971) The boletes of Michigan. University of Michigan Press, Ann Arbor

    Google Scholar 

  25. Stamatakis A (2006) RAxML-VI-HPC: maximum likelihood-based phylogenetic analyses with thousands of taxa and mixed models. Bioinformatics 22:2688–2690

    CAS  PubMed  Article  Google Scholar 

  26. Tai FL (1979) Sylloge fungorum sinicorum. Science Press, Academia Sinica, Beijing

    Google Scholar 

  27. Taylor JW, Jacobson DJ, Kroken S, Kasuga T, Geiser DM, Hibbett DS, Fisher MC (2000) Phylogenetic species recognition and species concepts in fungi. Fungal Genet Biol 31:21–32

    CAS  PubMed  Article  Google Scholar 

  28. Vilgalys R, Hester M (1990) Rapid genetic identification and mapping of enzymatically amplified ribosomal DNA from several Cryptococcus species. J Bacteriol 172:4238–4246

    CAS  PubMed Central  PubMed  Google Scholar 

  29. White TJ, Bruns T, Lee S, Taylor JW (1990) Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: Innis MA, Gelfand DH, Sninsky JJ, White TJ (eds) PCR Protocols: a guide to methods and applications. Academic, San Diego, pp 315–322

    Google Scholar 

  30. Wu G, Femg B, Xu JP, Zhu XT, Li YC, Zeng NK, Hosen MI, Yang ZL (2014) Molecular phylogenetic analyses redefine seven major clades and reveal 22 new generic lineages in the fungal family Boletaceae. Fungal Divers 69:93–115

    Article  Google Scholar 

  31. Wu G, Zhao K, Li YC, Zeng NK, Feng B, Halling RE, Yang ZL (2015) Four new genera of the fungal family Boletaceae. Fungal Divers. doi:10.1007/s13225-015-0322-0

  32. Yang ZL (2011) Molecular techniques revolutionize knowledge of basidiomycete evolution. Fungal Divers 50:47–58

    Article  Google Scholar 

  33. Zeng NK, Cai Q, Yang ZL (2012) Corneroboletus, a new genus to accommodate the southeast Asian Boletus indecorus. Mycologia 104:1420–1432

    CAS  PubMed  Article  Google Scholar 

  34. Zeng NK, Tang LP, Li YC, Tolgor B, Zhu XT, Zhao Q, Yang ZL (2013) The genus Phylloporus (Boletaceae, Boletales) from China: morphological and multilocus DNA sequence analyses. Fungal Divers 58:73–101

    Article  Google Scholar 

  35. Zhao K, Wu G, Yang ZL (2014) A new genus, Rubroboletus, to accommodate Boletus sinicus and its allies. Phytotaxa 188:061–077

    Article  Google Scholar 

  36. Zhu XT, Li YC, Wu G, Feng B, Zhao K, Gelardi M, Kost GW, Yang ZL (2014) The genus Imleria (Boletaceae) in East Asia. Phytotaxa 191:081–098

    Article  Google Scholar 

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Acknowledgments

The authors are very grateful to Prof. Y.J. Yao and Dr. T.Z. Wei for allowing access to the fungal collections in HMAS. Drs. B. Feng, Y.C. Li, Z.W. Ge, L.P. Tang, N.K. Zeng, X.F. Shi, Miss Y. J. Hao, J. Qin, T. Guo and Q. Cai are thanked for providing specimens. Dr. Z.X. Ren (KIB) is acknowledged for helping us in using the SEM facility. This work is supported by the Funds for International Cooperation and Exchange of the National Natural Science Foundation of China (31210103919), the National Basic Research Program of China (2014CB138305) and by the Fundamental Research Program of the Ministry of Science and Technology, China (2013FY110400). R.E. Halling thanks the National Science Foundation (USA) for funding under grants DEB-9972018, DEB-0414665 and DEB-1020421, and the National Geographic Society Committee for Research and Exploration in grants 7341–02 and 8457–08. A National Science Foundation (USA) grant to D.E. Desjardin (DED-0118776) provided REH the opportunity to collect in Indonesia.

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Correspondence to Zhu L. Yang.

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Zhu, XT., Wu, G., Zhao, K. et al. Hourangia, a new genus of Boletaceae to accommodate Xerocomus cheoi and its allied species. Mycol Progress 14, 37 (2015). https://doi.org/10.1007/s11557-015-1060-0

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Keywords

  • New clade
  • Synonym
  • Phylogeny
  • Taxonomy
  • New combination