Item Details

Title: Powdery mildew species on papaya – a story of confusion and hidden diversity

Date Published: 2017
Author/s: Braun U, Meeboon J, Takamatsu S, Blomquist C, Fernández Pavía SP ,Rooney-Latham S, Macedo DM
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Affiliation: Martin-Luther-Universität, Institut für Biologie, Institutsbereich Geobotanik und Botanischer Garten, Herbarium,
Neuwerk 21, 06099 Halle (Saale), Germany
2Mie University, Department of Bioresources, Graduate School, 1577 Kurima-Machiya, Tsu 514-8507, Japan
Plant Pest Diagnostics Branch, California Department of Food & Agriculture, 3294 Meadowview Road, Sacramento,
CA 95832-1448, U.S.A.
Laboratorio de Patología Vegetal, Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana
de San Nicolás de Hidalgo, Km. 9.5 Carretera Morelia-Zinapécuaro, Tarímbaro, Michoacán CP 58880, México
5Universidade Federal de Viçosa (UFV), Departemento de Fitopatologia, CEP 36570-000, Viçosa, MG, Brazil
Keywords: Carica papaya – Erysiphales – Erysiphe – molecular – Podosphaera – phylogeny –


Carica papaya and other species of the genus Carica are hosts of numerous powdery
mildews belonging to various genera, including some records that are probably classifiable as
accidental infections. Using morphological and phylogenetic analyses, five different Erysiphe
species were identified on papaya, viz. Erysiphe caricae, E. caricae-papayae sp. nov., Erysiphe
diffusa (= Oidium caricae), E. fallax sp. nov., and E. necator. The history of the name Oidium
caricae and its misapplication to more than one species of powdery mildews is discussed under
Erysiphe diffusa, to which O. caricae is assigned as a heterotypic synonym. Sphaerotheca caricaepapayae is synonymized with Podosphaera xanthii. Podosphaera caricicola comb. nov and
additional powdery mildew species occurring on papaya are also described. A key to the papaya
powdery mildew species that are considered is provided.