Xepicula yifeii sp. nov. caused a leaf blight of Lasia spinosa (Araceae) in South China karst

Abstract

Eleven coelomycetous fungi were isolated from diseased leaves of Lasia spinosa (Araceae) in Guangxi Province, China. These isolates produced sporodochial and myrothecium-like conidiomata. Multi-gene analyses (ITS, LSU, cmdA, rpb2, tub2 and tef1) showed that these isolates belonged to Xepicula group with a close relationship to X. leucotricha, but formed an independent branch with high bootstrap support. These isolates represent a new species of Xepicula that can be distinguished mainly by setae that are longer than the three other known species. Based on both morphological and molecular analyses, the new species, X. yifeii sp. nov., is described. Further, pathogenicity tests of in vitro and in vivo inoculation experiments showed that X. yifeii is pathogenic to Lasia spinosa leaves.

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Acknowledgments

The research is supported by the project of National Natural Science Foundation of China (Nos. 31972222, 31560489), Program of Introducing Talents of Discipline to Universities of China (111 Program, D20023), National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2014BAD23B03/03), Talent project of Guizhou Science and Technology Cooperation Platform ([2017]5788-5), and Guizhou Science, Technology Department International Cooperation Basic Project ([2018]5806). Xue-Juan Pan thanks High Level Innovative Talents Training Project of Guizhou Province (2016-4038). Nalin Wijayawardene thanks National Natural Science Foundation of China (No. 31950410558).

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Correspondence to Yong Wang or Xue-Jun Pan.

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Zhang, Q., Wijayawardene, N.N., Hyde, K.D. et al. Xepicula yifeii sp. nov. caused a leaf blight of Lasia spinosa (Araceae) in South China karst. Eur J Plant Pathol (2020). https://doi.org/10.1007/s10658-020-02060-3

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Keywords

  • Myrothecium
  • Pathogenicity
  • Phylogeny
  • Taxonomy