Peach rusty spot is caused by the apple powdery mildew fungus, Podosphaera leucotricha
Article
Article Title | Peach rusty spot is caused by the apple powdery mildew fungus, Podosphaera leucotricha |
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ERA Journal ID | 2647 |
Article Category | Article |
Authors | Jankovics, Tünde (Author), Dolovac, Nenad (Author), Bulajic, Aleksandra (Author), Krstic, Branka (Author), Pascal, Thierry (Author), Bardin, Marc (Author), Nicot, Philippe C. (Author) and Kiss, Levente (Author) |
Journal Title | Plant Disease: an international journal of applied plant pathology |
Journal Citation | 95 (6), pp. 719-724 |
Number of Pages | 6 |
Year | 2011 |
Publisher | American Phytopathological Society |
Place of Publication | United States |
ISSN | 0191-2917 |
1943-7692 | |
Digital Object Identifier (DOI) | https://doi.org/10.1094/PDIS-10-10-0711 |
Abstract | Peach rusty spot, an economically important disease of peach (Prunus persica var. persica), appears as necrotic spots on fruit. The etiology of the disease is still not well understood, although it has long been suspected that the causal agent is the apple powdery mildew pathogen, Podosphaera leucotricha. This work confirmed this hypothesis based on cross-inoculation experiments and analysis of rDNA internal transcribed spacer sequences polymerase chain reaction amplified from rusty spot and peach powdery mildew lesions. Cross-inoculations of apple and peach leaves with P. leucotricha and P. pannosa, the causal agent of peach powdery mildew, showed that (i) young peach fruit, up to 5 cm in diameter, developed symptoms typical of rusty spot following inoculation with P. leucotricha; (ii) leaves of 'Jonagold' apple seedlings developed powdery mildew infections when inoculated by touching young rusty spot lesions to their surfaces; (iii) P. leucotricha sporulated on young peach fruit up to 5 cm in diameter; and (iv) peach leaves and young shoots were not susceptible to P. leucotricha, whereas P. pannosa infected all the green parts of peach. A field experiment revealed that there was only a 2- to 3-week period of time during early peach fruit development when the epidermis was susceptible to P. leucotricha. An outcome of this study is that now a clear distinction can be made between the symptoms caused by P. pannosa and P. leucotricha on peach. |
Keywords | peach rusty spot; fungal pathogens and diseases; plant pathology and symbiosis; apple powdery mildew; cross-inoculation, spacer sequences; PCR; peach fruit; Erysiphales; fungi; Malus x domestica; Podosphaera leucotricha; Prunus; Prunus persica |
ANZSRC Field of Research 2020 | 310805. Plant pathology |
310705. Mycology | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Hungarian Academy of Sciences, Hungary |
Institute for Plant Protection and Environment, Serbia | |
University of Belgrade, Serbia | |
National Research Institute for Agriculture, Food and Environment (INRAE), France | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4232/peach-rusty-spot-is-caused-by-the-apple-powdery-mildew-fungus-podosphaera-leucotricha
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