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    Author(s): Karine Kettener; Julio Cesar Otto; Juliana Erika de Carvalho Teixeira Yassitepe; Edson Luis Furtado; Celso Luis. Marino
    Date: 2018
    Source: In: Schoettle, Anna W.; Sniezko, Richard A.; Kliejunas, John T., eds. Proceedings of the IUFRO joint conference: Genetics of five-needle pines, rusts of forest trees, and Strobusphere; 2014 June 15-20; Fort Collins, CO. Proc. RMRS-P-76. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 181-185.
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (565.0 KB)

    Description

    The climates of central and southern regions of São Paulo state (Brazil) are suitable for pathogens such as Puccinia psidii, which causes a common and serious disease in eucalyptus plantations less than 2 years old. We studied the genetic variability of P. psidii in commercial plantations of Eucalyptus species by random amplified polymorphic DNA molecular markers. All 56 isolates of P. psidii analyzed showed high polymorphism and there was no evidence of preferential infection in different plant tissues. In the analysis of pooled pustules according to the clone of origin, we observed the formation of two groups, one with isolates from susceptible clones and the second group only with isolates from resistant clones, indicating that isolates infecting resistant clones are more genetically similar than isolates infecting susceptible clones.

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    Citation

    Kettener, Karine; Otto, Julio Cesar; Yassitepe, Juliana Erika de Carvalho Teixeira; Furtado, Edson Luis; Marino, Celso Luis. 2018. Genetic variability in Puccinia psidii as revealed in commercial plantations of Eucalyptus species. In: Schoettle, Anna W.; Sniezko, Richard A.; Kliejunas, John T., eds. Proceedings of the IUFRO joint conference: Genetics of five-needle pines, rusts of forest trees, and Strobusphere; 2014 June 15-20; Fort Collins, CO. Proc. RMRS-P-76. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 181-185.

    Keywords

    genetic variation, genetic conservation, restoration, Pinus, Populus, rust fungi, disease resistance, climate change, Cronartium ribicola

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https://www.fs.usda.gov/treesearch/pubs/56734