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New or Unusual Disease Reports

Powdery mildew infection of neem in the Dominican Republic; another tropical host of Erysiphe necator

Miloslav KITNER
Department of Botany, Faculty of Sciences, Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
Tereza KŘIVÁNKOVÁ
Department of Botany, Faculty of Sciences, Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
Agáta ČURNÁ
Department of Botany, Faculty of Sciences, Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
Barbora MIESLEROVÁ
Department of Botany, Faculty of Sciences, Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
Vladan ONDŘEJ
Department of Botany, Faculty of Sciences, Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
David HERNANDEZ-MARTICH
Universidad Autónoma de Santo Domingo, Av. Alma Mater 200 - Santo Domingo, DN 10105, Dominican Republic
Josef B. ŠENKYŘÍK
Department of Botany, Faculty of Sciences, Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic
Uwe BRAUN
Martin Luther University, Institute of Biology, Department of Geobotany and Botanical Garden, Herbarium, Kirchtor 3, 06099 Halle (Saale), Germany
Aleš LEBEDA
Department of Botany, Faculty of Sciences, Palacký University Olomouc, Šlechtitelů 27, 779 00 Olomouc, Czech Republic

Published 2026-07-27

Keywords

  • Erysiphales,
  • Azadirachta indica,
  • host range expansion,
  • phylogenetic analysis

How to Cite

[1]
M. KITNER, “Powdery mildew infection of neem in the Dominican Republic; another tropical host of Erysiphe necator”, Phytopathol. Mediterr., pp. 255–266, Jul. 2026.

Funding data

Abstract

This study identified the causative agent of powdery mildew on Azadirachta indica (Sapindales, Meliaceae) in the Dominican Republic, using molecular phylogenetic analysis of internal transcribed spacer (ITS) and large subunit (LSU) sequences of rDNA, and morphological examinations. The infection was caused by Erysiphe necator, a pathogen primarily associated with Vitis spp. Together with other recent reports of E. necator on different host plants in Brazil, the host range of this pathogen has been expanded in tropical regions of Central America and the Caribbean region.

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