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Discovery of a cryptic species, Erysiphe salicina sp. nov., and reconstruction of the phylogeny of powdery mildews on Populus and Salix spp.

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Abstract

Recently performed phylogenetic-taxonomic analyses of species belonging to Erysiphe sect. Uncinula on willows (Salix spp.) demonstrated a much higher diversity than previously assumed. Phylogenetic analyses and morphological examinations of Chinese Erysiphe collections on Salix abscondita (= S. raddeana), S. sinica and S. taraikensis, all belonging to Salix subgen. Vetrix sect. Vetrix, revealed an additional cryptic species which is described as Erysiphe salicina. The new species is morphologically and phylogenetically distinguished from all other powdery mildew species. The phylogeny of the new species and closely related species on Populus and Salix spp. (Salicaceae) was reconstructed and discussed using a combined alignment of the internal transcribed spacer (ITS) regions and partial 28S rDNA sequences. The present phylogenetic analyses suggest that the recently described E. salicicola (on Salix gracilistyla in Republic of Korea) has to be reduced to synonymy with E. salicis-gracilistylae comb. nov. (≡ Uncinula salicis-gracilistylae).

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Data availability

The datasets generated and/or analysed during the current study are available from the corresponding author on reasonable request. Moreover, alignments were deposited in TreeBASE (http://www.treebase.org/) under the accession number S28710.

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Acknowledgements

We would like to thank the Herbarium Mycologicum Academiae Sinicae (HMAS) for lending type specimens, and sincere thanks are due to the master Han-Xing Gao for providing specimens and help.

Funding

This work was supported by the National Natural Science Foundation of China (31970019, 31670022) to Shu-Yan Liu.

Author information

Authors and Affiliations

  1. Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, No. 2888 Xincheng Street, Changchun, 130118, Jilin Province, China

    Jing Feng, Shu-Yan Liu, Guan-Xiu Guan, Feng-Yun Zhao & Shu-Rong Tang

  2. Department of Plant Pathology, College of Plant Protection, Jilin Agricultural University, No. 2888 Xincheng Street, Changchun, 130118, Jilin Province, China

    Jing Feng, Shu-Yan Liu, Guan-Xiu Guan, Feng-Yun Zhao & Shu-Rong Tang

  3. Herbarium, Department of Geobotany, Institute of Biology, Martin Luther University, Neuwerk 21, 06099, Halle (Saale), Germany

    Uwe Braun

  4. Retired Professor at Graduate School of Bioresources, Mie University, 1577 Kurima–Machiya, Tsu, Mie, 514-8507, Japan

    Susumu Takamatsu

  5. Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, 02138, USA

    Michael Bradshaw

  6. Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran

    Seyed Akbar Khodaparast

  7. Department of Plant Protection, Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences, Yana Fabritsiusa Street 2/28, Sochi, 354002, Krasnodar Region, Russia

    Timur S. Bulgakov

Authors
  1. Jing Feng
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  2. Shu-Yan Liu
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  3. Uwe Braun
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  4. Susumu Takamatsu
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  5. Michael Bradshaw
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  6. Seyed Akbar Khodaparast
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  7. Timur S. Bulgakov
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  8. Guan-Xiu Guan
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  9. Feng-Yun Zhao
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  10. Shu-Rong Tang
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Contributions

Jing Feng, Shu-Yan Liu, and Uwe Braun were involved in planning and supervised the work; Jing Feng performed DNA sequencing and color photos; Susumu Takamatsu, Michael Bradshaw, and Seyed Akbar Khodaparast performed phylogenetic analysis; Timur Bulgakov, Guan-Xiu Guan, Feng-Yun Zhao, and Shu-Rong Tang provided part of powdery mildew specimens. All authors reviewed the manuscript and commented on the manuscript.

Corresponding author

Correspondence to Shu-Yan Liu.

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Feng, J., Liu, SY., Braun, U. et al. Discovery of a cryptic species, Erysiphe salicina sp. nov., and reconstruction of the phylogeny of powdery mildews on Populus and Salix spp.. Mycol Progress 21, 54 (2022). https://doi.org/10.1007/s11557-022-01793-1

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  • DOI: https://doi.org/10.1007/s11557-022-01793-1

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