Khodaparast u. a.
Sydowia Vol. 75 E-Book/S 233-242
A re-assessment of Erysiphe polygoni: Phylogenetic....
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In: Sydowia 75, (2023): 233-242; ISSN 0082-0598, DOI 10.12905/0380.sydowia75-2023-0233, Published online on January 31, 2023

A re-assessment of Erysiphe polygoni: Phylogenetic analyses suggest an undescribed species

Hamideh Darsaraei 1, Najam-ul-Sehar Afshan 2, Saliha Afzal 2, Irsa Zafar 2, Ayesha Anwar 3, Monika Götz 4, Seyed Akbar Khodaparast 1, *, & Uwe Braun

1 Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran
2 Institute of Botany, University of the Punjab, Lahore, Pakistan
3 Department of Botany, University of Peshawar, Peshawar, Pakistan
4 Institute for Plant Protection in Horticulture and Urban Green, Julius Kühn Institute (JKI), Federal Research Centre for
Cultivated Plants, Messeweg 11/12, 38104 Braunschweig, Germany
5 Department of Geobotany, Institute of Biology, Martin Luther University, Herbarium, Neuwerk 21, 06099 Halle (Saale),
Germany

* email: khodaparast@guilan.ac.ir

Darsaraei H., Afshan N.S., Afzal S., Zafar I., Anwar A., Götz M., Khodaparast S. A. & Braun, U. (2023) A re-assessment of
Erysiphe polygoni: Phylogenetic analyses suggest an undescribed species. – Sydowia 75: 233–242.

Re-investigation of Erysiphe spp. on Polygonaceae in Iran, Germany, Pakistan, and Russia revealed that hitherto E. polygoni
is a complex species. Precise morphological studies along with rDNA ITS and 28S data of fresh specimens as well as an epitype
specimen of E. polygoni confirmed that Erysiphe on Rumex spp. differs from that one which infects Polygonum aviculare. With
having morphological, molecular, and host range differences in mind, E. rumicicola is introduced here as a new species on Rumex

spp. Further studies on possible undecribed species on Polygonaceae must be accomplished.
Keywords: biodiversity, Erysiphaceae, molecular studies, taxonomic novelties. – 1 epitype.