Characterizing Beltrania pseudorhombica the causal agent of pistachio leaf and fruit spot in Arizona
| Autor: | D. Felts, Juan Moral, M. T. Nouri, Paulo S. F. Lichtemberg, J. Sherman, John R. Lake, Themis J. Michailides |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Quinone Outside Inhibitors Plant Science Fungus Horticulture Biology Pathogenicity biology.organism_classification 01 natural sciences Conidium Fungicide 03 medical and health sciences 030104 developmental biology Germination Agronomy and Crop Science Pathogen Mycelium 010606 plant biology & botany |
| Zdroj: | European Journal of Plant Pathology. 154:849-854 |
| ISSN: | 1573-8469 0929-1873 |
| Popis: | In 2016 and 2017, we have constantly recovered a fungus with typical biconical (diamond shaped) conidia from pistachio fruit (cv. Kerman) received from Cochise County, Arizona, United States. Morphological and molecular characterization identified the isolates as Beltrania pseudorhombica, a member of the Beltraniaceae family that is an uncommon plant pathogen. In in-vitro tests, B. pseudorhombica showed temperatures of 26.9 °C and 31.1 °C as the optimal for the mycelial growth and conidial germination, respectively. Pathogenicity tests demonstrated the isolate capacity to cause lesion in leaflets (Kerman > Lost Hills > Golden Hills > Kalehghouchi) and fruits (Lost Hills > Kalehghouchi > Golden Hills > Kerman). The preventive fungicide application with sole formulation of demethylation inhibitor and mixed formulation of succinate dehydrogenase inhibitors and quinone outside inhibitors offered the greatest lesion control, when compared with the sole formulation of quinone outside inhibitors. This short communication provides important epidemiological information that can be useful to avoid the dissemination of new pathogens in new pistachio production areas in the United States. |
| Databáze: | OpenAIRE |
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