In: Sydowia 76, (2024): 113-145; ISSN 0082-0598, DOI 10.12905/0380.sydowia76-2024-0113, Published online on May 06, 2024

Contributions to the knowledge of the phylogeny and taxonomy of the Erysiphaceae (powdery mildews) – part 2

Michael Bradshaw, Uwe Braun*, Monika Götz, Gökhan Dogan, Makbule Erdogdu, Mevlüde A. Ates, Katarína Pastircáková, Martin Pastircák, Sylvia Fernández-Pavía, Susumu Takamatsu, Mehrdad Abbasi, Swarnalatha Moparthi, Yusufjon Gafforov, Vasilica-Claudiu Chinan, Volker Kummer, Julia Kruse, Donald H. Pfister

1 North Carolina State University, Department of Entomology and Plant Pathology, Raleigh NC, USA
2 Martin-Luther-Universität, Institut für Biologie, Bereich Geobotanik und Botanischer Garten, Herbarium, Kirchtor 3,
06099 Halle, Germany
3 Julius Kühn-Institut, Bundesforschungsinstitut für Kulturpflanzen, Institut für Pflanzenschutz in Gartenbau und urbanem
Grün, Messeweg 11/12, 38104 Braunschweig, Germany
4 Kirs¸ehir Ahi Evran University, Graduate School of Natural and Applied Sciences, Kirs¸ehir, Türkiye
5 Kirs¸ehir Ahi Evran University, Faculty of Agriculture, Department of Landscape Architects, Kirs¸ehir, Türkiye
6 Kirs¸ehir Ahi Evran University, Faculty of Agriculture, Department of Agricultural Biotechnology, Kirs¸ehir, Türkiye
7 Department of Plant Pathology and Mycology, Institute of Forest Ecology, Slovak Academy of Sciences, Akademická 2,
94901 Nitra, Slovakia
8 Research Institute of Plant Production, National Agricultural and Food Centre, Bratislavská 122, 92168 Piešt’any, Slovakia
9 Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana de San Nicolás de Hidalgo,
Km 9.5 Carretera Morelia-Zinapécuaro, 58880 Tarímbaro, Michoacán, México
10 Retired Professor at Graduate School of Bioresources, Mie University, 1577 Kurima–Machiya, Tsu, Mie 514-8507, Japan
11 Department of Botany, Iranian Research Institute of Plant Protection, Agricultural Research Education and Extension
Organization (AREEO), Tehran, Iran
12 Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC 27695-7613, USA
13 Central Asian Center for Development Studies, New Uzbekistan University, Tashkent, 100007, Uzbekistan
14 Department of Education and Training Management, Tashkent International University of Education, Tashkent,
100207, Uzbekistan
15 Mycology Laboratory, Institute of Botany, Academy of Sciences of Republic of Uzbekistan, Tashkent 100125, Uzbekistan
16 Faculty of Biology, Alexandru Ioan Cuza University, Bd. Carol I, no. 11, Ias¸i – 700506, Romania
17 Universität Potsdam, Institut für Biochemie und Biologie, Maulbeerallee 1, 14469 Potsdam, Germany
18 Pfalzmuseum für Naturkunde – POLLICHIA-Museum, Hermann-Schäfer-Straße 17,
67098 Bad Dürkheim, Germany
19 Harvard University Herbaria, Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Avenue,
Cambridge, Massachusetts 02138, USA

* e-mail: uwe.braun@botanik.uni-halle.de

Bradshaw M., Braun U., Götz M., Dogan G., Erdogdu M., Ates M.A., Pastircáková K., Pastircák M., Fernández-Pavía S., Takamatsu S., Abbasi M., Moparthi S., Gafforov Y., Chinan V.-C., Kummer V., Kruse J. & Pfister D. H. (2023) Contributions to the phylogeny
and taxonomy of the Erysiphaceae (powdery mildews) – part 2. – Sydowia 76: 113–135.

The phylogeny and taxonomy of several powdery mildews (Erysiphaceae) have been examined. Sequences of the rDNA ITS
region have been retrieved from types and additional specimens, collected in Germany, Iran, Turkey, Uzbekistan, and several
other countries. Erysiphe cruciferarum s. lat. has been revised and split into E. cruciferarum s. str. on Alyssum and Berteroa (tribe
Alysseae), E. alliariicola sp. nov. on Alliaria petiolata, and E. radulescui, a plurivorous species that occurs on a wide range of
cruciferous hosts as well as on Cleome spp. and Papaver spp. The revision of this complex is supported by phylogenetic multilocus
analyses of rDNA (ITS, 28S and IGS) and protein coding genes (CAM, GAPDH, GS, RPB2, and TUB). The Erysiphe euphorbiicola
complex is phylogenetically examined. Oidium poinsettiae is very closely allied to Erysiphe euphorbiicola, but final conclusions
on the taxonomy of this species and its relation to E. euphorbiicola are not yet possible and require additional sequences
and multilocus examinations. E. euphorbiae-cotinifoliae sp. nov. is described on Euphorbia cotinifolia from Mexico. Podosphaera
aucupariae is epitypified, and the new variety P. aucupariae var. arcuatispora on Sorbus aucuparia in Turkey is described. Furthermore,
the phylogeny and taxonomy of Erysiphe pachypodii, Euoidium parthenii-integrifolii, Golovinomyces clematidis,
G. hyoscyami, G. prenanthis, G. senecionis on Ligularia persica and Senecio spp., Fibroidium pelargonii, and Podosphaera clandestina
var. cydoniae have been examined. Podosphaera pannosa has been reported on Mandevilla splendens (Apocynaceae). –
2 new species, 5 epitypifications, 1 lectotypification, 4 new synonyms.

Keywords: Erysiphe, Brassicaceae, Euphorbiaceae, Golovinomyces latisporus, Podosphaera sect. Podosphaera, phylogenetic
affinity, rDNA ITS and 28S sequences.